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Showing papers on "Stub (electronics) published in 2000"


Journal ArticleDOI
TL;DR: In this article, a bandpass filter using microstrip quarter-wavelength resonators is proposed, which consists of the open stub inverter between quarter wavelength resonators, which results in a compact design and low loss.
Abstract: A novel bandpass filter using microstrip quarter-wavelength resonators is proposed. The proposed filter consists of the open stub inverter between quarter-wavelength resonators, which results in a compact design as well as low loss. The tapped open stub not only works as a K-inverter but also introduces an attenuation pole. The attenuation pole can be located at the upper or lower side of the passband by adjusting the open stub length. A two-pole Chebyshev bandpass filter is designed and tested at 1.99 GHz. A four-pole bandpass filter of elliptic-type performance is also designed and tested at 2.015 GHz.

215 citations


Patent
27 Jun 2000
TL;DR: In this article, a high quality-factor, tunable radio frequency or microwave resonator is disclosed, which includes one or more microelectromechanical switches positioned along its length.
Abstract: A high quality-factor, tunable radio frequency or microwave resonator is disclosed. The resonator includes one or more microelectromechanical switches positioned along its length. The switches are comprised of metal membrane bridges spanning the microstrip resonator. The bridges are connected to radial stubs that comprise reactive loads. An electrostatic potential differential between the bridge and microstrip resonator causes the bridge to collapse, thereby coupling a radial stub to the microstrip. The imposition of the reactive loads on the resonator causes the resonant frequency to change. Multiple resonators employed in a filter configuration can be variably coupled using microelectromechanical bridges that engage or disengage capacitive air gaps between two microstrip lines, to control filter bandwidth over wide tuning ranges.

186 citations


Patent
02 Nov 2000
TL;DR: In this paper, an electronic filter includes a substrate, a ground conductor, an input, an output, a first microstrip line positioned on the substrate and electrically coupled to the input and the output, and a first tunable dielectric varactor electrically connected between the microstrip lines and the ground conductor.
Abstract: An electronic filter includes a substrate, a ground conductor, an input, an output, a first microstrip line positioned on the substrate and electrically coupled to the input and the output, and a first tunable dielectric varactor electrically connected between the microstrip line and the ground conductor. The input preferably includes a second microstrip line positioned on the substrate and including a portion lying parallel to the first microstrip line. The output preferably includes a third microstrip line positioned on the substrate and including a portion lying parallel to the first microstrip line. The first microstrip line includes a first end and a second end, the first end being open circuited and the varactor being connected between the second end and the ground conductor. The filter further includes a bias voltage circuit including a high impedance line, a radial stub extending from the high impedance line, and a patch connected to the high impedance line for connection to a DC source. In a multiple pole embodiment, the filter further includes additional microstrip lines positioned on the filter substrate parallel to the first microstrip line and additional tunable dielectric varactors electrically connected between the additional microstrip lines and the ground conductor.

142 citations


Patent
31 Aug 2000
TL;DR: A gas turbine engine exhaust nozzle includes an outlet for discharging exhaust, and a plurality of circumferentially spaced apart stub airfoils disposed adjacent the outlet, shed vortices for mixing exhaust flow and attenuating noise and reducing infrared signature with minimum performance loss.
Abstract: A gas turbine engine exhaust nozzle includes an outlet for discharging exhaust, and a plurality of circumferentially spaced apart stub airfoils disposed adjacent the outlet. The airfoils shed vortices for mixing exhaust flow and attenuating noise and reducing infrared signature with minimum performance loss.

91 citations


Journal ArticleDOI
TL;DR: In this article, a method to eliminate bandwidth-limiting impedance anomalies or resonances in single-and dual-polarized tapered slot phased arrays is presented, where the resonances are effectively suppressed by introducing plated through vias in the element.
Abstract: A method to eliminate bandwidth-limiting impedance anomalies or resonances in stripline-fed single- and dual-polarized tapered slot phased arrays is presented. For dual-polarized arrays, others have shown that the resonance with the lowest frequency is related to a cavity constituted by the dielectric region of the tapered slot element. Simulations have been performed to test if this cavity model also predicts the remaining resonances. It was found that the cavity model predicts some but not all of the resonances. However, it was found that all resonances in both single- and dual-polarized arrays have some dependence on the dielectric region. The resonances are effectively suppressed by introducing plated through vias in the element. The vias are positioned along the edges of the slotline, slotline cavity, stripline, and stripline stub. The analysis is performed with the finite-difference time-domain method by considering a unit cell in an infinite array.

71 citations


Patent
08 Nov 2000
TL;DR: In this article, a method for repairing a turbine nozzle segment (10) having at least one vane (12) disposed between outer and inner bands is provided. But this method is not suitable for the case of a single vane.
Abstract: A method is provided for repairing a turbine nozzle segment (10) having at least one vane (12) disposed between outer and inner bands The method includes separating the inner band (16) from the nozzle segment (10), and joining the inner band (16) to a newly manufactured replacement casting (30) having an outer band and a vane (34) The replacement casting (30) includes an airfoil stub (44) The airfoil stub (44) is received in a recess formed in the inner band (16) Joining is completed by joining the airfoil stub (44) to the inner band (16) The replacement casting (30) may be modified from a newly manufactured singlet casting

67 citations


Patent
02 Nov 2000
TL;DR: In this paper, a folded dipole antenna for transmitting and receiving electromagnetic signals is provided, which includes a ground plane and a conductor extending adjacent the ground plane, spaced therefrom by a first dielectric.
Abstract: A folded dipole antenna for transmitting and receiving electromagnetic signals is provided. The antenna includes a ground plane and a conductor extending adjacent the ground plane and spaced therefrom by a first dielectric. The conductor includes an open-ended transmission line stub, a radiator input section, at least one radiating section integrally formed with the radiator input section, and a feed section. The radiating section includes first and second ends, a fed dipole and a passive dipole. The fed dipole is connected to the radiator input section. The passive dipole is disposed in spaced relation to the fed dipole to form a gap. The passive dipole is shorted to the fed dipole at the first and second ends.

56 citations


Journal ArticleDOI
TL;DR: In this paper, a circular microstrip antenna loaded along its feed axis with either one stub or two stubs has been analyzed using an improved linear transmission line model, when the length of the stub is small, the frequency is tuned over a 9% range in the L-band and when it is comparable to /spl lambda//4, it exhibits dual-frequency operation.
Abstract: A circular microstrip antenna loaded along its feed axis with either one stub or two stubs has been analyzed using an improved linear transmission line model. When the length of the stub is small, the frequency is tuned over a 9% range in the L-band and, when it is comparable to /spl lambda//4, it exhibits dual-frequency operation. The experimental results are in good agreement with the theoretical results.

51 citations


Patent
14 Dec 2000
TL;DR: In this article, a drive wheel bearing assembly, a fixed type constant velocity universal joint is coupled to a wheel bearing, mounted to one end of an intermediate shaft, and a sliding type constant velocities universal joint, mounted on the other end of the intermediate shaft.
Abstract: In a drive wheel bearing assembly, a fixed type constant velocity universal joint is coupled to a wheel bearing, mounted to one end of an intermediate shaft, and a sliding type constant velocity universal joint, is coupled to a differential, mounted to the other end portion of the intermediate shaft. One end portion of a stub shaft is connected to an inner joint ring of the constant velocity universal joint via torque transmission portions; one end portion of the intermediate shaft is connected to the other end portion of the stub shaft via torque transmission portions. A threaded portion is formed on an outer diameter portion of either the intermediate or stub shaft; a nut member threadedly engages the threaded portion; and a keeper ring is fitted into annular grooves formed on the outer diameter portion of the intermediate shaft or the stub shaft and an inner diameter portion of the nut member allowing the nut member to rotate, but not move axially.

46 citations


Journal ArticleDOI
TL;DR: In this article, a finite element analysis on the postbuckling behavior of thin-walled cold-formed lipped channel and hat-section stub columns under axial compression is presented.
Abstract: This paper presents a finite element analysis on the post-buckling behaviour of thin-walled cold-formed lipped channel and hat-section stub columns under axial compression. The specimens were modelled exactly as that used in the carefully controlled stub column tests conducted by Zaras and Rhodes. Numerical predictions on the load versus end-shortening characteristics and ultimate load capacity of the structures were obtained using a non-linear finite element analysis. The effect of the input parameters such as the degree of prescribed initial imperfection and the size of the element mesh, on the convergence of the solution is examined. The initial imperfection for post-buckling analysis is achieved by making use of the exact linear buckling wave form. Standard design procedures are developed for post-buckling analysis for thin-walled stub columns using finite element method. Results from the design procedure correlate well with experimental data and BS5950 predictions.

38 citations


Journal ArticleDOI
TL;DR: In this paper, the authors proposed a novel class of uniplanar coplanar waveguide (CPW)-to-slotline transitions, which are particularly suitable for monolithic millimeter-wave integrated circuits.
Abstract: This paper proposes a novel class of uniplanar coplanar waveguide (CPW)-to-slotline transitions, which is particularly suitable for monolithic millimeter-wave integrated circuits. Instead of using CPW series stub printed in the ground plane, as is the case in classical CPW-to-slotline transition, this paper shows the capability to use a CPW series stub printed in the center conductor of the CPW. Compared to classical CPW-to-slotline transitions, the proposed transitions have the following advantages: additional degrees of freedom, lower radiation loss, larger bandwidth, higher compactness, and a major reduction of the number of air bridges that are potentially expensive to build. One alternative configuration that appears to have some merit involves the use of the slotline ring resonator, which does not suffer from open-end or short-end effects and, therefore, gives more accurate resonance frequency, provides an accurate localized zero or infinite impedance point, and maintains low- or high-input impedance values over a wide frequency range, depending on the feed type. A principle of achieving such high-quality transitions is detailed and also confirmed by experimental and theoretical results, which are in good agreement up to 50 GHz. A maximum fractional bandwidth of 160% is achieved for a 10-dB return loss, and the corresponding insertion loss is less than or equal to 2 dB.

Journal ArticleDOI
TL;DR: In this paper, the authors describe a method of enhancing the bandwidth of two different electromagnetically coupled microstrip antennas by utilization of a tuning stub and an approximate theory and equations are developed to demonstrate the potential bandwidth improvement and required stub impedance characteristics.
Abstract: This paper describes a method of enhancing the bandwidth of two different electromagnetically coupled microstrip antennas by utilization of a tuning stub. An approximate theory and equations are developed to demonstrate the potential bandwidth improvement and required stub impedance characteristics. A novel dual-stub design is presented that achieves better characteristics than a conventional quarter wavelength open-end stub. As examples, the bandwidth (VSWR<2) of a conventional proximity-coupled microstrip antenna is increased from 4.8 to 8.4% and the bandwidth of a stacked aperture-coupled microstrip antenna is increased from 27.5 to 34.5% using this technique.

Patent
14 Jun 2000
TL;DR: In this article, a disk for a BLISK rotary stage of a gas turbine engine includes a stub on the tapered circumferential surface of a turbine disk, the stub defining a weld joint surface on the radially outermost face of the stub, and linear friction welding of the blade to the stub is effected by oscillating the blade in a third direction while applying a welding force inwardly along the blade.
Abstract: A disk for a BLISK rotary stage of a gas turbine engine includes a stub on the tapered circumferential surface of a turbine disk, the stub defining a weld joint surface on the radially outermost face of the stub. The weld joint surface follows the annulus curvature in axial and circumferential directions while remaining flat in a third direction. A blade is applied radially to the stub and linear friction welding of the blade to the stub is effected by oscillating the blade in said third direction while applying a welding force inwardly along the blade.

Journal ArticleDOI
TL;DR: In this paper, a space-mapping (SM) optimization algorithm for microwave devices is presented, which exploits the linear frequency-sensitive mapping of a coarse and a fine model at different sets of frequencies.
Abstract: A powerful new space-mapping (SM) optimization algorithm is presented in this paper. It draws upon recent developments in both surrogate model-based optimization and modeling of microwave devices, SM optimization is formulated as a general optimization problem of a surrogate model. This model is a convex combination of a mapped coarse model and a linearized fine model. It exploits, in a novel way, a linear frequency-sensitive mapping. During the optimization iterates, the coarse and fine models are simulated at different sets of frequencies. This approach is shown to be especially powerful if a significant response shift exists. The algorithm is illustrated through the design of a capacitively loaded 10:1 impedance transformer and a double-folded stub filter. A high-temperature superconducting filter is also designed using decoupled frequency and SMs.

Patent
30 Jun 2000
TL;DR: In this paper, a broadband plate antenna with a ground conductor and a radiating element separated from the ground conductor is described, which includes an impedance matching stub ( 404 ) electrically coupled to the radiating elements.
Abstract: A broadband plate antenna ( 402 ) is disclosed, which includes a ground conductor ( 407 ) and a radiating element ( 406 ) which is separated from the ground conductor ( 407 ). The antenna also includes an impedance matching stub ( 404 ) electrically coupled to the radiating element ( 406 ), and means for feeding the radiating element ( 406 ), wherein the means for feeding includes a feed point ( 410 ) disposed on the impedance matching stub ( 404 ).

Patent
Yasushi Sato1
29 Jul 2000
TL;DR: In this paper, a fiber stub type optical device is provided with a ferrule formed with a through hole extending in a longitudinal direction thereof and a groove for dividing the through hole in an intermediate position with respect to the longitudinal direction.
Abstract: A fiber stub type optical device is provided with a ferrule formed with a through hole extending in a longitudinal direction thereof and a groove for dividing the through hole in an intermediate position with respect to the longitudinal direction, a first optical fiber accommodated in the through hole, a second optical fiber aligned with the first optical fiber in the through hole while being divided by the groove and having a larger mode field diameter than the first optical fiber, and an optoisolator provided in the groove and optically connected with the second optical fiber divided by the groove.

Patent
13 Dec 2000
TL;DR: In this article, an adjustable-length transmission line has been proposed for impedance matching at a driver circuit output for high frequency input-output devices, which reduces transient voltages by providing a matching impedance for the reactive component of the impedance of the receiver circuit to the driver circuit.
Abstract: An impedance matching system and a network for impedance matching at a driver circuit output for high frequency input-output devices. The impedance matching network comprises an adjustable-length transmission line having a length adjusted in proportion to the magnitude of transients on the driver circuit output and an input impedance, which is purely reactive, and is a function of its length. The purpose of the adjustable-length transmission line is to reduce transient voltages by providing a matching impedance for the reactive component of the impedance of the receiver circuit to the driver circuit. In the preferred embodiment, the impedance matching network comprises two parallel conductive lines formed on the system card, shorted by a movable stub, and connected in parallel to the driver circuit. Optionally, the impedance matching network further comprises a control circuit which detects overshoots and undershoots on the driver circuit output and provides a control current proportional to the magnitude of overshoots and undershoots to an electromagnetic adjustment mechanism which provides a linear adjustment to the moveable stub proportional to the control current.

Patent
24 Oct 2000
TL;DR: In this paper, the fine protection circuit was used to reduce the residual voltage at the output of a gas tube charge eliminator or a λ/4 shorting stub to a minimal value.
Abstract: The fine protection circuit arrangement is to reduce the remaining residual impulses on gas tube charge eliminators This is to be achieved by means of a cascading of a gas tube charge eliminator or a λ/4 shorting stub with a fine protection circuit The fine protection circuit connected to the gas tube circuit eliminator or λ/4 shorting stub reduces the relatively high residual voltage at the output of the gas tube charge eliminator or λ/4 shorting stub to a minimal value

Proceedings ArticleDOI
16 Jul 2000
TL;DR: In this article, a new coaxial CTS array is proposed, which provides good impedance matching characteristics and good tolerance to manufacturing errors, and is suitable for millimeter wave personal communication systems (PCS).
Abstract: A new coaxial Continuous Transverse Stub (CTS) array is proposed in this paper. It is an omni-directional low cost antenna array which provides good impedance matching characteristics and good tolerance to manufacturing errors. It can be simply fed by a coaxial connector and is particularly suitable for millimeter wave personal communication systems (PCS). It is shown that this type of radiating element provides high aperture efficiency, and for the simulated design of single- and multiple-element arrays, S/sub 11/ was below -10 dB across a 6 GHz frequency span at the Ka band. The geometry of the proposed antenna is described and its design consideration discussed.

Patent
Arun Chandra Kundu1, Ikuo Awai1
22 Mar 2000
TL;DR: In this article, the authors proposed a dual-mode filter with the ability to set an attenuation pole frequency with maintaining a passbandwidth of the filter by selecting a combination of an angle between input/output ports and a size of a stub perturbation.
Abstract: In a dual-mode filter, this invention is capable of optionally setting an attenuation pole frequency with maintaining a passbandwidth of the filter by selecting a combination of an angle between input/output ports and a size of a stub perturbation. The dual-mode filter includes a circular resonator formed on a dielectric substrate, a pair of input/output ports connected to the circular resonator through a capacitance formed on the substrate at a symmetrical position with respect to a symmetry plane passing through a center of the circular shape of the circular resonator, and stub poles are formed on the substrate radially extending along the symmetry plane from opposite positions of the circular resonator in the diametrical direction with each other. The pair of input/output ports are formed with defining an angle different from a right angle therebetween. When the angle between the pair of input/output ports is smaller or greater than 90°, an attenuation pole frequency can optionally be set by this angle and the size of the stub perturbation.

Patent
23 Aug 2000
TL;DR: In this paper, a method for coupling a stub end flanged connector to a fiber reinforced plastic pipe is described, where the stub end connector is then bonded to the plastic pipe and at least one stiffness transition layer is bonded over the flanged connection, over an axial span at least including a termination of the taper in the connector.
Abstract: A method is disclosed for coupling a stub end flanged connector to a fiber reinforced plastic pipe. The method includes tapering an end of the fiber reinforced plastic pipe on the outside surface of its fiber overwrap. An inside surface of a stub end connector is correspondingly tapered. The stub end connector is then bonded to the fiber reinforced plastic pipe. A liner of the plastic pipe is then flared to correspond to a flared end of the stub end connector. Then at least one stiffness transition layer is bonded over the plastic pipe and the stub end connection, over an axial span at least including a termination of the taper in the stub end connector.

Patent
13 Sep 2000
TL;DR: In this paper, a surge protector includes a coaxial through-section having a first inner conductor and a first outer conductor, and a stub having a second inner and a second outer conductor.
Abstract: A surge protector includes a coaxial through-section having a first inner conductor and a first outer conductor and a stub having a second inner conductor and a second outer conductor. The stub has a first end and a second end, the stub being coupled to the coaxial through-section, wherein the second inner conductor is conductively coupled to the first inner conductor at the first end of the stub and the second outer conductor is conductively coupled to the first outer conductor at the first end of the stub. The second inner conductor is substantially hollow and has at least one helical aperture disposed therein. A charge elimination device is conductively coupled between the second inner conductor and a grounding device. A radio frequency short circuit bypass is electrically coupled between the second inner conductor and the second outer conductor.

Proceedings ArticleDOI
K. Nakada1, T. Marumoto, R. Iwata
26 Oct 2000
TL;DR: In this article, a stub switched phase shifter, which consists of a reference line, a delay stub and fewer RF switches than the switched line phase shifters, is proposed.
Abstract: A stub switched phase shifter, which consists of a reference line, a delay stub and fewer RF switches than the switched line phase shifter, is proposed. It has low phase deviation characteristics. Especially, for the condition of /spl Phi/=180/spl deg/, S=0, L=1/2/spl lambda/g/sub 0/, the proposed phase shifter can reduce two RF switches, and is as compact as about 40% the size of a conventional switched-line phase shifter. It is suitable for phased array applications. The characteristics of the proposed phase shifter designed for /spl Phi/=90/spl deg/, 180/spl deg/ were confirmed by the method of moments.

Patent
29 Aug 2000
TL;DR: In this paper, a strip transmission line to waveguide transmission line transition or impedance coupling is described, where an aperture is formed through the ground plane and the wall of a waveguarded transmission line on the other side of ground plane (ground plane and wall may be the same piece).
Abstract: A strip transmission line to waveguide transmission line transition or impedance coupling is described. A strip transmission line is separated from a ground plane by a dielectric therebetween, and an aperture is formed through the ground plane and the wall of a waveguide transmission line on the other side of the ground plane (ground plane and wall may be the same piece). Each transmission line is terminated reactively, or at a port; for simple coupling across the transition, one end of each transmission line forms a reactive stub termination, such as an open circuit end. A waveguide channel waveguide walls and a waveguide base connected therebetween may be provided. The walls of such waveguide are coupled with the ground plane to provide a waveguide top for the waveguide transmission line. An aperture is located, preferably transverse to the microstrip transmission line, and passes through an opening in the ground plane and also through a coupled waveguide side, which may be separate or of a piece with the ground plane. The impedances of the transmission lines are adjusted to affect the coupling afforded by the aperture. Multiport impedance coupled transmission lines may be formed in this way.

Patent
29 Nov 2000
TL;DR: In this paper, a roller for guiding knitwear produced on a knitting machine, with at least one stub shaft (3) of reduced cross-section projecting to the side of a middle part, and at least a first adjusting ring which can be fixed on the stub shaft to form an annular gap is described.
Abstract: A roller (1) for guiding knitwear produced on a knitting machine, with at least one stub shaft (3) of reduced cross-section projecting to the side of a middle part (2) and at least one first adjusting ring (16) which can be fixed on the stub shaft (3) to form an annular gap is described. The adjusting ring (6) has a first axial end (17) with an outer diameter corresponding to the outer diameter of the middle part (2) and a second axial end (17a) associated with the annular gap (22). In accordance with the invention the adjusting ring (16) is assembled from at least two shells (24, 25) adjoining one another along butt joints (FIG. 5).

Patent
Kevin R. Boyle1
03 Aug 2000
TL;DR: In this paper, a personal communications apparatus comprises an elongate body (202) incorporating an antenna diversity arrangement in which first and second antennas (102A, 102B) are located at opposite ends of the body.
Abstract: A personal communications apparatus comprises an elongate body (202) incorporating an antenna diversity arrangement in which first and second antennas (102A, 102B) are located at opposite ends of the body. In one embodiment a microphone (114) is located at the tip of one antenna (102A) and a loudspeaker (116) at the tip of the other antenna (102B). The microphone (114) and loudspeaker (116) act as top loads to their respective antennas, thereby enabling the use of shorter antennas. The antennas (102A, 102B) may be formed from coaxial cable, enabling them to provide electrical connections between the microphone (114) or loudspeaker (116) and transceiver circuitry in the body of the apparatus. By arranging for the microphone (114) and loudspeaker (116) to have low impedances at radio frequencies, the coaxial cable acts as an inductive stub and enables the antennas (102A, 102B) to be further shortened.

Patent
Tsunenobu Kouda1
23 Jun 2000
TL;DR: In this article, a package substrate in which a semiconductor chip is placed is disclosed, and a through hole land (opposed conductor) connected to a signal wiring is opposite to a fixed electrical potential conductor through an insulator layer.
Abstract: A package substrate in which a semiconductor chip is placed is disclosed. A through hole land (opposed conductor) connected to a signal wiring is opposite to a fixed electrical potential conductor through an insulator layer. The through hole land is disposed in a wiring layer on the outermost side of wiring layers of the package substrate. The through hole land connected to the signal wiring for input/output of signals at a higher frequency has a larger size. The through hole lands connected to the signal wiring for input/output of signals at a certain frequency and the through hole lands connected to the signal wiring for input/output of signals at a lower frequency than the certain frequency are alternately arranged. The through hole land, the insulator layer and the fixed electrical potential conductor form a capacitor and serve as a stub, thereby reducing impedance of the signal wiring connected thereto.

Journal ArticleDOI
TL;DR: A design is reported for a system of transferrable sample holders and mating experimental stations, that allows samples to be transferred between preparation and analysis tools with high positional accuracy.
Abstract: A design is reported for a system of transferrable sample holders and mating experimental stations, that allows samples to be transferred between preparation and analysis tools with high positional accuracy. The sample holders are designed to be manipulated/transported using standard “ESCA stub” compatible hardware. Provisions are made for heating, cooling, and temperature measurement.

Patent
18 Aug 2000
TL;DR: In this article, a method and apparatus for testing the bond strength of materials such as a coating (101) on a substrate (100) wherein a stub (102) is placed on the coating with a light curable adhesive (114) therebetween, the stub having a threaded section extending upwardly and being made of light transparent material, or a material that is at least partly transparent, a high intensity light (111) is positioned over the stub and operated to irradiate the adhesive through the stub to cure the adhesive, after which a force is applied to the stub in
Abstract: A method and apparatus for testing the bond strength of materials such as a coating (101) on a substrate (100) wherein a stub (102) is placed on the coating (101) with a light curable adhesive (114) therebetween, the stub having a threaded section extending upwardly and being made of light transparent material, or a material that is at least partly transparent, a high intensity light (111) is positioned over the stub and operated to irradiate the adhesive through the stub to cure the adhesive, after which a force is applied to the stub in a direction normal to the coating tending to separate the coating from the substrate and is measured to determine the amount of force required. The apparatus includes a stand off ring (23) positioned around the stub for supporting cylinder housing (1) in spaced relationship to the coating, the housing having a cavity therein formed by inner (7) and outer (3) walls and a lower plate for receiving piston (9) therein retained by reaction plate (14). Adapter (24) is threadedly connected (27) (105) to stub (102) and extends through hole (108) in the cylinder housing and hole (13) in the piston and threadedly engages (25)(18) the reaction plate so that fluid pressure fed by pressure source (31) to compression chamber (29) compresses piston (9) against the reaction plate and the housing against the stand off ring to apply the force through the adapter and stub tending to separate the coating in the test area from the substrate. The force is measured by gage (32).

Patent
31 Jan 2000
TL;DR: A driveline assembly for rotatably interconnecting a first power transmission device to a second power transmission devices includes a propeller shaft, an adapter plate, a stub shaft and a constant velocity joint.
Abstract: A driveline assembly for rotatably interconnecting a first power transmission device to a second power transmission device includes a propeller shaft, an adapter plate, a stub shaft and a constant velocity joint. The propeller shaft has a first end coupled to the adapter plate and a second end adapted to be drivingly coupled to the first power transmission device. The stub shaft includes a substantially cylindrical rod having a first end and a second end. The stub shaft further includes a flange radially extending from the first end of the rod wherein the flange is coupled to the adapter plate. The constant velocity joint is slidingly engaged and rotatably coupled to the second end of the stub shaft and the constant velocity joint is adapted to be coupled to the second power transmission device.