Showing papers on "Stub (electronics) published in 1982"

Rotary material removing tool

Abstract: A material removing tool includes an elongated shank having a rear end portion arranged to be driven by the motor of a boring or milling machine and a front end portion provided with a coaxial stub which is received in a socket between two legs of an adapter which carries the cutting implement. At least one of the legs has a radial hole which is in near register with a tapped bore of the stub. The shank portion of a screw, whose head bears against a conical surface surrounding a portion of the hole in the one leg, meshes with the threads in the tapped bore of the stub to urge the rear edge faces of the legs against complementary surfaces provided on two shoulders forming part of the front end portion of the shank. This enhances the resistance to bending stresses and prevents wobbling or vibration of the adapter relative to the shank. The external surfaces of the adapter and shank are formed with longitudinally extending grooves for evacuation of shavings or chips from the locus of removal of material from a workpiece. The diameter of the hole exceeds the diameter of the tapped bore, and the axis of the tapped bore is nearer to the shoulders of the shank than the axis of the hole. The head of the screw has a conical peripheral surface whose inclination is the same as that of the conical surface bounding the above-mentioned portion of the hole in the one leg. A second screw can be provided to secure the other leg of the adapter to the stub. The socket of the adapter and the stub can be stepped to further enhance the resistance to bending stresses.

Specific Equations for One and Two Section Quarter-Wave Matching Networks for Stub-Resistor Loads

Abstract: Given a load network consisting of a conductance in parallel with a short-circuited stub, the admittance values of optimum one and two section commensurate transmission line matching networks are derived. These values are expressed in closed form as functions of the bandwidth and ripple level. It is shown that optimum networks have nonzero reflection coefficient minima, as predicted by classical broad-band matching theory.

Method of attaching a stub to a pole

Abstract: A method and apparatus for lengthening or shortening a pole supporting lines, such as electric power and telephone lines. The method includes the providing of a stub adapted to be joined in abutting end-to-end relationship with the lower end of the pole to form a lower extension and support for the pole. The pole is raised vertically until its lowermost end portion is clear of the ground so that a lower end portion of the pole can be sized, as necessary, for reception by a mechanism joining the pole and stub. If necessary, the length of the pole is also shortened to provide a desired combined length. After the lower end has been sized, the pole and stub are joined to each other so that they constitute, in effect, a substantially rigid continuation of each other. The pole and stub are then vertically lowered into the ground to a required depth and the ground is consolidated around the base of the stub. The apparatus includes appropriate structure for accomplishing the preceding method.

Apparatus for removal of ash

Abstract: Apparatus for removal of ash and the like from open fireplaces, ashpans etc. by means of a vacuum cleaner, said apparatus comprising an airtight ash container, an inlet pipe stub for ash and air and an outlet pipe stub to be connected with a suction source such as a vacuum cleaner, wherein the container comprises a barrel with a bottom and an easily mountable and dismountable cover or lid and wherein the lid or cover carries the inlet pipe stub and the outlet pipe stub.

Direction finding antenna

Abstract: A direction finding antenna for use in missiles and the like may include arrays of log periodic monopole antennas. The antennas may be constructed of thin, metallic stub regions laminated to an insulative support backing as a part of a wing of a missile. The antennas are triangular in shape in order to provide improved performance and to conform to the shape of wings on the missile. The antennas perform an aerodynamic function as parts of the wings as well as performing an electromagnetic function in the direction finding system. The antennas are provided with parallel feed lines which extend along the base of the triangular antenna, connecting with antenna stubs on both sides of the support backing, and connecting together at the forward end of the antenna. The antenna stubs are generally rectangular metallic sheets arranged in order of increasing length on the support backing. Electrically longer antenna stubs may be provided with zig-zag convolutions for improved performance at lower radio frequencies.

Broadband planar coplanar waveguide-slotline transition

Abstract: A planar two-stub coplanar waveguide-slotline transition is analysed using equivalent circuit approach and is designed by optimizing the slotline and the stub lengths. The end reactances for the two stubs are evaluated and cancelled separately under maximum power transfer conditions. Experimental VSWRs less than 1.12 in the band 3.2 - 4.4 GHz are measured associated with an insertion loss of 0.6 dB.

Mounting for remotely controlled rear-view mirror

Abstract: A cable-controlled rear-view mirror comprises a swivel pin having stub shafts which define a first pivot axis and a semi-cylindrical journal slot which cooperates with a semi-cylindrical trunnion on the glass case to define a perpendicular pivot axis. A modified embodiment further stabilizes the mirror against vibration by creating frictional drag between a spring and a hollow sleeve.

Cable screw union

Abstract: In order to achieve strain relief and protection against twisting of the cable which are improved in comparison with the cable screw union according to DE-AS 2,631,996, it is proposed for a cable screw union having a connecting stub, a cap nut which is screwed onto this stub, a clamping cage which is arranged in the nut, and an annular seal which is arranged in the cage that the cage is not to be constructed as a part which is integrally formed on the connecting stub but, according to DE-OS 2,547,917, has a loose part having clamping fingers which engage directly on the cable over the seal and that the cage be supported in a rotationally fixed manner on the connecting stub so that a connection which is resistant to strain and rotation can be produced between the cable and connecting stub.

Stub tube inspection device

Abstract: Apparatus for remotely controlled examination of the control rod drive penetration stub tubes in the wall of a nuclear reactor pressure vessel including a rotatable carriage on which is mounted a reciprocable shaft to which is attached an inspection instrument for scanning the stub tubes.

Metal stub and ceramic body electrode assembly

Abstract: An electrically conductive ceramic electrode body having an opening therein is threadably engaged with a metal stub having at least a slot therein to provide space for expansion of the stub without damage to the electrode body.

Flow distributor for shower systems

Abstract: The flow distributor has an inlet connection stub (4) and an outlet connection stub (8), directed coaxially therewith, for the connection of a shower head. A laterally arranged actuating handle (10) bears a securing claw (24) for a hand shower which is connected, via a hose, to a second outlet connection stub (6) which is arranged opposite the actuating handle and the outlet direction of which runs parallel to the first outlet connection stub (8), with the result that the start of the hose runs parallel to the end of the hose on the hand shower.

Microwave integrated circuit

Abstract: PURPOSE:To simplify the adjustment for impedance matching, by forming the land for impedance matching as stub and providing plural number of stubs with an interval interposing a strip line. CONSTITUTION:Matching adjustment lands 3 are arranged in a column to form stubs 10a, 10b, 20a, 20b, -60a, 60b, which are arranged by interposing strip lines 2a, 2b. The stubs as 10a, 10b and 40a, 40b opposing with each other by interposing the strip lines 2a, 2b form a couple respectively. In adjusting the matching with the stubs, the lands 3 forming the stubs and the lines 2a, 2b are connected via metallic conductors. As the number of couples of the stubs provided at input and output sides respectively, at least two couples are required as the stub nearest to an FET 5 and the stub located apart from the stub above by 1/4-1/2 wavelength of the microwave, and the number to be increased from it is selectable freely within the range of matching.

Matching circuit for a pre-amplifier of SHF band television signal receiver

Abstract: A matching circuit for a pre-amplifier of an SHF band television signal receiver is disclosed. The matching circuit comprises a stub line arranged near a gate terminal of an FET, and a pair of stub lines connected to a transmission line, one being a stub line exhibiting a short circuit impedance at a lower frequency than operating frequencies of the matching circuit and the other being a stub line arranged oppositely to the stub line and exhibiting a short circuit at a higher frequency than the operating frequencies. A distance between the stub line and the pair of stub lines is selected to be approximately equal to 1/4 wavelength of a center frequency of the desired signal band.

A Single-Probe On-Site Method of Measuring the Dielectric Constant And Conductivity of Soft Earth Media over a 1-GHz Bandwidth

Abstract: A single-conductor transmission line inserted into the ground is used to measure the frequency-dependent dielectric constant and conductivity of soils and other soft earth media up to at least 1 GHz, as a function of depth. Wide band pulses are launched up the line from a transmitting stub at the tip, and a computer is used to Fourier transform the pulses received at the surface and compute the frequencydependent electrical parameters. If computer use is inconvenient, singlevalue measurements can be made directly from the received pulses.

Reversible gear machine

Abstract: A reversible gear machine which can be used either as a gear pump or as a gear motor regardless of the pressure gradient direction between its inlet and outlet ports includes a housing accommodating meshing gears for rotation about their respective axes which are defined by respective stub shafts extending axially beyond the end faces of the gears. At least one pressure element, which may be constituted by bearing members for the stub shafts, and which is movable axially of the respective stub shafts, has a surface facing away from the gears. A sealing component including a relatively rigid support ring and an elastically yieldable sealing body is accommodated in a groove of the sealing element provided at the aforementioned surface of the latter, such that the support ring contacts the close end wall of the housing and a rib of the sealing body contacts the bottom of the groove and subdivides the latter into two compartments. The sealing component delimits on the aforementioned surface of the sealing element first and second pressure fields which are in communication with the respective ports of the gear machine, and third pressure fields which are situated between the sealing component and the respective stub shafts and which are subjected to the pressure prevailing between the other axial surface of the pressing element inwardly of the root circle of the gear teeth and outwardly of the respective stub shafts. Two of the pressing elements and two of the sealing components may be provided, each at one axial side of the gears.

Handling truck with independent wheels - has pair of rear steerable wheels with front drive wheels and independent shock absorbers

Abstract: The handling truck has a chassis resting on two driven front wheels. Each wheel has a drive coaxial with its stub axle. The rear steering wheels are similar and the stub axles are controlled by a steering rod. The wheels (2,3) are independent and all are connected to the chassis by a suspension. These each have a suspension arm (18), with its rear fixed on the drive unit (10). The front is pivoted on the chassis (1) on an axis (19) perpendicular to the chassis longitudinal axis. A shock absorber (20) lies along the centre line of the stub axle (9).

Metal spring stub and ceramic body electrode assembly

Abstract: An electrode assembly comprising an electrically conductive ceramic electrode body having an opening therein and a metal stub retained in the opening with at least a surface of the stub in intimate contact with a surface of the body and the stub adapted with a spring to flex and prevent damage to the body from expansion of the stub when subjected to a temperature differential

Mixer in microwave circuit integration

Abstract: PURPOSE:To achieve a microwave circuit integration mixer having broad band, low noise and greater image suppression ratio, by providing a band-pass filter consisting of 1/4 wavelength end opened stub with a strip line transmitting a high frequency signal power to the mixer diode. CONSTITUTION:A high frequency signal inputted from a high frequency signal input terminal 1 propagates on a main line 2 and is applied to a mixer diode 3. A local oscillation signal inputted from a local signal input terminal 4 is applied to the mixer diode 3 via a local signal band-pass filter 5 coupled with the main line 2 and an intermediate frequency signal is outputted through a low-pass filter 6. A band block filter 11 consisting of 3 stages of 1/4 wavelength tip opened stubs provided in 1/4 wavelength interval in common use of an image signal block filter and a local oscillation block filter, is provided at a location where the impedance viewed from the high frequency input terminal of the diode 3 at the main line 2 is short-circuited at the image frequency.

Axial flow ventilating fan - has blade shafts U-bolted to hub flange with clamping plates

Abstract: The fan is assembled with a hub flange (7), blades (1) and an interconnecting stub shaft (6). The stub shaft is clamped into the split, hollow bore of the blade by bolts (13) and clamping plates (11). The other end of the stub shaft rests in a cradle (8) and is secured by two U-bolts. The first U-bolt (15) fits over the outside of the stub shaft. The second U-bolt (16) fits into an annular groove in the shaft.

Drill chuck clamping spanner - has bevel pinion at either side combined with square or multiple-edged stubs

Abstract: The clamping spanner is provided with a ratchet mechanism for use with combination tools, mainly for drill chucks. The device is fitted with two bevel gear pinions meshing with the inner toothing of the drill chuck. The hubs of the pinions have a square or multiple-edge hole accommodating a corresponding stub which fits with openings of the combination tool used. The two bevel gear pinions are connected with a square stub with expanding surfaces. The device can be designed as a socket spanner insert and the drive is effected via a combination tool by pushing it on onto a square stub.

Loaded line type diode phase shifter

Abstract: PURPOSE:To save power consumption by connecting two switching diodes so that the polarity at a supplying side for switching diode driving current and the polarity at a receiving side for driving current is reversed to each other and the diodes can be driven in series at the connection of the diodes. CONSTITUTION:Switching diodes D1, D2 are connected so that their polarity is reversed to each other and the diode D1 is earthed by insulating its ground side at DC by a capacitor C3. If a connection point between the diode D1 and the capacitor C3 is regarded as a driving current supplying point, the driving current supplying point of the diode D1 is in low impedance and driving current to connect between the diodes D1, D2 is also made to flow from a DC power supply V3 into the ground through the diode D1, a stub 22, a main transmission line 21, a stub 23, and the diode D2, so that a high frequency choke can be omitted and the power consumption of these diodes is the same as that of one switching diode. Since the power consumption of said driving circuit is approximately proportional to that of the switching diodes, the power consumption is reduced sharply as compared to a parallel load circuit.

Glass antenna to be mounted on vehicle

Abstract: PURPOSE:To receive radio waves with a high sensitivity without a bad influence upon the performance of an antenna, by setting the length of an opened stub wire, which is provided in a power supply terminal, to a prescribed wavelength of a very high frequency receiver. CONSTITUTION:A main element 2 of a glass antenna, a feed point 3 of the main element 2, and a terminal 4 for defogger of a defogger heating coil are provided on a window shield glass 1. The feed point 3 is connected to a receiver 6 for an AM radio, an FM radio, or the like through an antenna feeder 5. The terminal 4 is connected to a choke coil 8 for preventing noise through wires 7a and 7b connected to current supply terminals 4a and 4b of the defogger heating coil. Opened stub wires 10a and 10b where tips of wires are opened are provided independently of wires 7a and 7b. A length lS of wires 10a and 10b is set to the 1/4 of an optional receiving wavelength lambda in the receiving band of a very high frequency receiver such as the FM radio provided in the receiver 6.

Installation for venting a fuel tank

Abstract: An installation for venting a fuel tank, especially for a motor vehicle, which is formed by at least one collecting tank (33) arranged in the interior of the fuel tank and a vent line (32) cooperating therewith whereby the installation is connected with an external line (8) on the side of the atmosphere by means of a connecting stub (7). To achieve a simple construction and enable a relatively inexpensive manufacture, the collecting tank (33) and the vent line (32) disposed on the inside of the fuel tank are formed by hollow spaces of a one-piece, plate-shaped structural part (16).

Anchoring or foundation method for a construction element or the like.

Abstract: Anchoring or foundation forming method for a device such as a mechanical member or a construction or holding element The method is characterized in that it consists in using at least a stub (S1) of a fallen tree, optionally trimming, at least superficially, the upper face (1) of said stub, fixing on such face a carrier or holding element (P1), and connecting the latter by any appropriate means to the element or device to be supported or held The invention provides particularly in a simple way in a forest environment, very resisting foundations for simple constructions

Counter connecting device for two-stub gas meters

Abstract: Counter connecting fitting for two-stub gas meters, for connecting to a vertically aligned gas consuming line and a horizontally extending gas inlet pipe by means of gas meter connections, the gas meter connections being connected to pipe stubs and the inlet pipe stub on the gas inlet pipe and the outlet stub, which is connected to the gas consuming line, being mounted on the latter without a joining connection in a manner intersecting the gas inlet pipe.

Stub cable dam for communication

Abstract: PURPOSE:To prevent charcteristics from varying by arranging a terminal board, where individual cables introduced from a stub cable run and are sealed, in close contact with the internal wall of a dam. CONSTITUTION:A terminal board 12 having through holes 11 for individual cables 4 introduced from a stub cale 5 has a groove 14, in which an elastic material, such as an O ring 13 made of silicone rubber or neoprene rubber, is to be fitted, at the circumference. Through the ring 13, the terminal board 12 is arranged in close contact with the internal wall of dum metallic fittings 1. The step part 15 of the internal wall is used to potition the terminal board 12. In the individual through holes 11, aluminum sleeves 16 each containing an individual cable 4 run and are kept in close contact with the internal walls of the through holes 11 by O rings 17 of elastic materials as well. The gap between the aluminum sleeve 16 and cable 4 is charged with low-viscosity silicone resin 18.

Compact drive for windscreen wiper - has main drive gear mounted on bearing on end of wiper shaft

Abstract: The rear end of the wiper stub has a bearing with the gear wheel (10) rotating freely on the stub and driven by a worm gear (11). A crank linkage (24,20,21) between the large gear wheel and a cam gear segment drives a small gear wheel (22) rigidly secured on the wiper stub. The crank provides the reciprocating drive for the stub. The whole gearing is compact and supported on the wiper stub. One part of the crank linkage is pivoted on a support (23) on the gearing baseplate (12) and the whole gearing is fitted as one unit.

Apparatus for connecting a disk pack to a disk drive

Abstract: Apparatus for connecting a disk pack to a disk drive comprises a hub (16) carrying one or more disks (12). A stub shaft (24) is axially mounted on the hub. A spindle (20) forming part of the disk drive has a passageway (50) at one end for receiving the stub shaft, an annular groove (52) being provided in the passageway and having a shoulder (54). A recess (32) in the stub shaft has a shoulder and at least two balls (30) are disposed in this recess so that they are movable between a first position adapted to allow free movement of the stub shaft into and out of the passageway and a second position adapted to capture the balls between the shoulder of the annular groove and the shoulder of the recess to prevent the stub shaft from being withdrawn from the passageway. A push rod (34) urges the balls into the second position after the stub shaft has been inserted into the passageway to a predetermined extent and locks the balls in the second position against a force tending to withdraw the stub shaft from the passageway. A lever (64) is provided for manually moving the push rod to allow the balls to move so that the stub shaft may be withdrawn from the passageway and the disk pack disconnected from the disk drive.

Welding method for tube and tube plate

Abstract: PURPOSE:To improve the reliability of welding joint through forming stub with welding metal by cutting out the stub from a welding part where beveling groove formed at a tubular hole position in a tube plate is narrow-gap-welded. CONSTITUTION:At a position where a tubular hole 6 of a tube plate 1 to be worked, a beveling groove 6 having an inner diameter smaller than that of stub, an outer diameter larger than that of the stub and a depth deeper than that of the stub is formed. Next, after the groove 6 is multilayer welded with low heat input through the way of narrow gap welding the stub 8 of welding having the same cross section as a tube is cut out from a welding part 7 through machine work. Then, a tube 4 and the stub 8 are butt-welded through the ordinary welding way.

Hose attachment, especially for high-pressure hoses

Abstract: In the case of a hose attachment, which is suitable for high-pressure applications, for screwing onto a connecting stub (20) which is provided with a thread (21) and has a nozzle (9) which is provided for plugging onto the hose (10), simple construction and simple operation are achieved with the hose (10) being reliably held on the nozzle (9) in that the nozzle (9) is supported in a housing which is provided with a thread for screwing onto the stub (20), a clamping ring (15) rests on a stop (22, 12) on the hose side, the stop (22, 12) can be displaced on the stop stub (20) by screwing on the housing, the housing holds the clamping ring (15) on the hose side by means of a collar having an incline (5), and the clamping ring (15) has a corresponding incline (17) which rests on the collar having the incline (5).