Showing papers on "Bellows published in 1985"

Particle analyzing apparatus and method of moving particles in suspension through such apparatus

Abstract: A particle analyzing apparatus (10) and method of moving and counting particles in suspension through such an apparatus. The particle analyzing apparatus comprises a particle counting device (16) wherein particles in suspension are caused to be moved through an aperture (24) whose effective impedance is changed with the passage of each particle therethrough and a fluid connection means (18) for drawing a quantity of the suspension through the aperture, including a source of vacuum (30). The source of vacuum comprises a bellows (60) having an end (64), and a constant force means (66) connected to the end of the bellows means.

Device for handling well casings

Abstract: A device (1) for use in handling casing (20) in a rotary drilling rig configuration comprises a first member (30) attachable to a lifting block (10), a second member (31) to which the casing (20) can be connected and a bellows (40) which is disposed between the first member (30) and the second member (31) and can be inflated via an air line (41). The casing (20) is positioned directly above the assembled casing string (21). In operation the bellows (40) is pressurized until the maximum pressure permitted by a relief valve (not shown) is attained. The rig hand may then manually adjust the pressure downward until the preferred pressure is reached. Because of the «Iift N provided by the bellows (40), that preferred pressure will be characterized by the seemingly weightless suspension of the casing (20) above the box (22) and the relative ease with which the casing (20) may be manually lowered by the rig hand under the increased control provided by the device, so that the threads of the pin (23) and box (22) may be properly aligned and connected with damage to neither. If the weight of each casing (20) is substantially the same weight as the prior casing, the rig hand may simply adjust the adjustable pressure relief valve to vent at a pressure corresponding to the bellows being nearly fully extended with the load applied.

Frictionless hydraulic damper and damper-snubber

Abstract: A frictionless hydraulic damper including a cylinder having end walls mounting the opposite ends of a shaft with a clearance in labyrinth seals, bellows seals between each end wall and the portions of the shaft extending beyond each end wall, a piston head on the shaft within the cylinder, hydraulic fluid in the cylinder and in both bellows seals, an orifice construction located relative to the piston head for permitting flow of hydraulic fluid past the piston head to produce damping, and a conduit in the shaft for effecting communication between the two bellows. The damper as described above also functions as a snubber by including a valve construction which selectively closes the orifice construction.

Foam dispensing device

Abstract: The foam dispensing device is intended for use in the inverted position and includes a container having a reservoir portion for holding a foamable liquid and a bellows portion for holding air. A foam producing unit is mounted in the discharge port, the foam producing unit including a housing mounted in and receiving air from the bellows and a liquid receiving conduit extending from the foam producing unit into the reservoir. A separate air return conduit communicating with atmosphere extends into the container air. The container reservoir and bellows portions are separated by a finger-engageable waist portion to facilitate operation of the bellows portion.

System and method for leveling a converted motor home

Abstract: A method and system are provided for installation in a vehicle having an air suspension system comprising four air beams, each supported over a vehicle axle by bellows supplied by air from an air tank, and under control of one front and two rear height control valves. Manually selective leveling control apparatus is installed in this system for leveling the vehicle, particularly when the vehicle (which has been converted from a bus to a motor home) is parked. Four five-way ball leveling valves are installed in the air suspension system. Each leveling valve is installed between a different height control valve, the bellows of an air beam, and the common air tank. Each five-way valve provides a means for adjusting the pressurized air to its associated air beam by manually setting it to: (1) a "raise" position which admits pressurized air directly from the air tank to the air beam; (2) a "lower" position in which the air beam is vented through the exhaust port of the valve; (3) a "hold" position in which the air beam is connected to a plugged valve opening; or (4) to an "automatic" position in which the air beam is placed under the control of the automatic height control valve by connecting the air beam directly to the automatic height control valve. The leveling valves are all mounted on, and controlled from, a control panel positioned near the driver's seat.

Bellows pump having adjustable stop cam for varying the stroke

Abstract: A bellows pump with the improvement of an adjustable index for uniformly controlling the amount of fluid displaced in each expansion and compression cycle.

Working heads of polishing machines and the like

Abstract: The connection between the part-carrying plate (3) and the rotating drive spindle (1) is effected by a deformable bellows (4), the inner space of which is maintained under pressure in order to ensure the application of the part (11) against the polishing disc of the machine, whilst at the same time permitting the free orientation of the said part.

Cable bushing for motor vehicles

Abstract: A cable bushing is proposed which creates a connecting channel between a motor vehicle pillar and the hinge-side front end of an adjacent motor vehicle door. The cable bushing consists of an end section which can be clipped into the pillar side and of a tubular section which is separate therefrom and is connected via a bellows. The tubular section passes through the door cavity and emerges through the wall on the inside of the door so that the cables which are passed through are laid in a simple manner outside the cavity and can subsequently be covered by a lining element.

Electrically controlled door locking system

Abstract: A vehicle door locking system uses a simple latch mechanism (10) without internal locking means connected to an external door handle (28) through a collapsible bellows (32). A solenoid controlled valve (44), when open, vents the bellows to atmosphere, allowing the bellows to collapse and transmit no movement from the door handle to the latch mechanism or, when closed, presents collapse of the bellows, which then transmits movement of the door handle to the latch mechanism.

Force measurement apparatus and method

Abstract: Fluid density measuring apparatus and method for directly measuring fluid density or indirectly measuring force, acceleration, flow velocity, differential pressure and other parameters affecting the apparatus. The apparatus includes a bellows and a generally rigid hollow housing having openings through which fluid may flow to the interior of the housing, and a vibratory single-ended tuning fork mounted in the housing. The apparatus also includes circuitry for causing the tines of the tuning fork to resonate, for example, 180 degrees out of phase in a transverse direction, with the frequency of the tines varying with variation in the density of the fluid surrounding the tines. Circuitry is also included for determining the frequency at which the tuning fork tines resonate. When the density of the fluid into which the housing is placed changes, the frequency of vibration of the tines of the tuning fork is caused to change to provide a measure of the density change.

Dual bellows pump with drive circuit through bellows

Abstract: A pump includes a pair of circular metal bellows rigidly secured to the pump housing at the perimeter of their accordion-like ring structures and interconnected at their centers so as to be capable of flexing in phase. An electrical coil is attached to the interconnected bellows and is axially movable with the bellows. The coil is surrounded by a permanent magnet structure secured to the pump housing. Each bellows communicates with an associated fluid chamber which has a valve structure for the inlet and outlet of fluid. The coil is electrically connected to an alternating current power supply, the connection being made through the electrically conductive bellows. The bellows flex in phase in the presence of the alternating current to the coil and thus alternately pull fluid in and force fluid out of the respective fluid chambers. Since the fluid chambers are connected to a common fluid output and since the bellows axially flex in phase, there are two pressure pulses per pump cycle.

High pressure inverted bellows valve

Abstract: An inverted bellows valve has a two-piece stem interconnecting the valve and actuator for reciprocating axial movement of the stem tip. Tapered surfaces are advantageously utilized between cooperating elements for self-centering the valve assembly. An annular gland disposed along the exterior of the valve stem has concentric inner and outer O-rings which permit the stem to float and compensate for misalignment. A wobble collar is also disposed in abutting engagement with the stem to compensate for uneven spring forces which could otherwise cock the stem. The bellows subassembly is removable in one piece to facilitate maintenance and replacement.

Pressure temperature sensor

Abstract: A pressure-temperature sensor for monitoring a fluid system for an over-temperature, an under-pressure or an over-pressure condition. The sensor includes a bellows operator enclosed in a fluid-filled housing with a normally-closed, first switch means and a normally-open second switch means. A diaphragm operator and a bellows are responsive to changes in temperature and pressure to, respectively, operate the first and second switches to indicate an over-temperature, an under-pressure or an over-pressure condition.

Combination pneumatic spring and shock absorbing apparatus

Abstract: A novel pneumatic spring-loaded damping apparatus having a piston mounted for reciprocal movement within a cylindrical housing and provided with a piston rod which at extends through a resilient chamber provided by a rolling bellows at one end of the housing, the rolling bellows being mounted for rotation relative to the housing or the piston rod to provide a strut for a steerable front wheel of an automotive vehicle.

Marine propulsion device bellows assembly

Abstract: A marine propulsion device comprising a pivot housing including an opening, and a lip extending inwardly around the opening, a flexible bellows having an end complementary with and communicating with the opening in the pivot housing, the end of the bellows including a flange engaged with the lip, a propulsion unit removably connected to the pivot housing and including a portion engageable with the end of the bellows for compressing and securing the flange against the lip on the pivot housing so that the flange sealingly engages the pivot housing when the propulsion unit is connected to the pivot housing.

Pressure-biased, temperature sensor

Abstract: A pressure-biased, temperature sensor means utilizing a cooperating pair of aligned bellows operators in a chamber communicating with a fluid to a reference pressure. One of the bellows is responsive to an elevated temperature of a fluid coolant system and the second bellows, which communicates with the fluid coolant system, is responsive to a decrease in fluid pressure. The aligned bellows cooperate to move a switch actuation means to close a switch thereby completing a signal circuit and energizing a signal means.

Portable apparatus for the recovery of placer gold

Abstract: The present invention relates to an improved portable lightweight apparatus for the separation of gold and similar metals from pulverized ore, sand, debris and the like. More particularly, the invention is a portable lightweight apparatus which uses currents of air to separate gold from sand and debris, in which the apparatus includes in combination a frame, an optionally detachable screen rack, an optionally detachable hopper, an inclined riffle board which contains holes through which air currents jet and an attached bellows to provide the currents of air to separate the gold particles from the debris, and a means to operate the bellows one side of which is in combination with the riffle board and a means to operate the bellows. In one instance, one solid side of the bellows is the bottom of the riffle board.

Liquid-sealed motor

Abstract: PURPOSE:To prevent the damage of a can without increasing the size of a motor by partitioning a chamber between a frame and the can be an elastic material, and connecting one chamber with the periphery of a rotor or out of the frame. CONSTITUTION:A lower bracket 7 is axially connected via a connecting hole 21. One side of the hole 21 is connected with a room 23 in a cylinder 22 of one end side of a thrust case 15. A lower collar 5 is axially connected with a connecting hole 21 via a connecting hole 24. Doughnut-shaped metal bellows 25 is watertightly connected with a lower collar 5, disposed in chamber 26 between a frame 1 and a can 3, and the interior is connected with the hole 24. Even if the volume of insulating oil B is large and expanded, the interior of the bellows 25 disposed in the chamber 26 is connected through the holes 21, 24, the chamber 23 and a connecting slot 11 with the periphery of a rotor 12. Accordingly, the bellows 25 can elongate or contract due to the pressure difference between the pressure of the periphery of the rotor 12 and the pressure in the chamber 26, and the pressure difference is absorbed.

Ventilated expandable boot

Abstract: An expandable boot employing a bellows for enclosing and protecting an object that changes in dimension. In one embodiment, the boot includes a vent in the form of at least one tube projecting from the boot and open to the atmosphere for the admission or expulsion of air as the bellows is extended or contracted. Preferably, a second tube similar to the first and projecting from the opposite end of the boot permits passage of air through the boot when it is stationary to prevent excess moisture accumulation. The bellows is protected against kinking during its compression by providing that adjacent webs in the pleats of the bellows are asymmetrical.

Hose connection provided with a bellows section

Abstract: In a hose connection which bridges the intermediate space between the pillar of a motor vehicle and the hinge-side end side of an associated motor vehicle door, and receives lines, and whose bellows section is adjoined in each case by an automatically locking end section, in order to obtain a sufficient holding and sealing effect in the connection area even in the case of an oval cross-section, it is proposed either to form the end section onto the bellows section and to provide this area with an approximately round cross-section reinforced by an inserted expansion ring so that when it is inserted into the vehicle body-side receptacle opening, an outwardly directed contact force is produced, or to construct the end section as a separate component consisting of tough and resilient material and to pull the bellows section up, with widening, onto a circumferential edge of this edge section. In both cases sealing contact of a lip formed on the bellows section is effected on the outside during automatic locking of the end section.

Tool for removing soldered components

Abstract: Apparatus is presented for removing a faulty component from a printed circuit board when attachment is by a plurality of input/output pins that extend outwardly from the component and protrude through holes in the printed circuit board where they are then soldered to printed circuitry. Removal is accomplished by clamping the printed circuit board in a fixture which includes a container of molten solder together with aligning and retaining elements which support the board over the surface of the molten solder so as to bring the protruding tips of the input/output pins into contact therewith. Above the clamped down printed circuit board a movable trolley is situated on a beam located parallel to and several inches above the printed circuit board. Extending downward from the trolley is a tubular metal bellows on the lower end of which is a rubber suction cup. The upper end of the bellows connects via flexible tubing to a vacuum pumping source. The trolley is moved along the beam until the suction cup can be made to contact the top surface of the faulty component. Application of a vacuum causes the tubular bellows to shrink in length creating a uniform pulling force on the component which draws it free from the printed circuit board as soon as the solder is melted from the downward extending pins.

Apparatus for adjusting the head or foot section of the resting surface of a bed

Abstract: An apparatus for adjusting the head and the foot section of the resting surface of a bed by means of a bellows or a plurality of bellows which are expanded by compressed air and contracted by expelling the compressed air. Due to the particular construction of the compressed air unit and its positioning in a receiving space enclosed by a base plate and an adjusting plate, a self-contained appliance unit is provided which is suitable for use with any bed.

Hydraulic clutch release mechanism

Abstract: A hydraulic release mechanism of the bellows type provides for a constant volume of hydraulic fluid, thereby allowing a bellows of minimum size to be used. A housing is slidably supported on a transmission mounted guiding member for movement between the transmission and the fingers of diaphragm spring. A piston also slidably supported on the guiding member is receivable within the housing, with a housing attached flexible bellows engaged therebetween. A coil spring continually biases the housing and piston together and toward the spring fingers. The continual bias keeps the piston lightly engaged with the spring fingers, and keeps the housing at an operative position on the guiding member where the bellows is maintained in a constant volume unexpanded state. A flexible collet is flexed into the guiding member when the bellows begins to expand, anchoring the housing at its operative position. The anchoring allows the same volume of additional hydraulic fluid to expand the bellows sufficiently to move the piston, compress the spring fingers, and release the clutch.

Lifting device for the wheels of a utility motor vehicle

Abstract: The lifting device is arranged on supporting axle (4) of a tandem bogie (2) comprising a supporting axle (4) and a driving axle (3). It has a lifting bellows (17), with which the supporting axle (4) can be raised. The pressure in the lifting bellows is controlled together with the pressure in the spring bellows (7) of the supporting axle (4) as a function of the wheel behaviour, monitored by sensors, at the driving axle (3) in such a way that the driving axle (3) does not spin, i.e. in the event of a risk of spinning, the share of the load taken by the driving axle (3) is automatically increased.

Analysis and design guidance for the lateral stiffness of bellows expansion joints

Abstract: Thin-walled bellows expansion joints are frequently applied in piping systems for absorbing thermal and mechanical movement. There have been several failures in service due to the lateral buckling of bellows under pressure, the most notable case being the Flixborough disaster in 1974. The problem of bellows squirming, as the phenomenon is more commonly termed, was first investigated by the Dutch engineer J. A. Haringx in 1952. In the intervening years there has been little additional research carried out and consequently there is a paucity of experimental data and practical theories on the subject. The present paper offers guidance to avoid bellows squirming and provides the design engineer with simple procedures for evaluating the stability of a pressurised bellows subject to either small or large lateral displacements. Formulae are also presented in order to determine the strength of bellows supports which limit and control the amount of bellows movement in service.

Bellows for rigid coupling

Abstract: The bellows for coupling with high pivoting, which is used at low temperatures, is made of thermoplastic elastomer based on polyetherester. The front flanks (3) of the first ply (1) viewed from the side opposite to the coupling (7), decrease more from the hollow (5) of the ply towards the crest (6) than the other flanks.

Liquid dispensing nozzle having a sealing arrangement for vapor return means

Abstract: A liquid dispensing nozzle has a check valve mounted adjacent the front of the nozzle body to seal an annular vapor return passage, which is between the spout and a bellows, to prevent communication through vapor return passages in the nozzle to the vapor recovery equipment unless the spout is disposed in the fill pipe of a vehicle tank. One of the elements of the check valve for forming this seal is mounted on the spout and the other is mounted on a member, which is slidably supported by the nozzle body.

Method of preventing stress corrosion in a bellows expansion joint

Abstract: A novel bellows expansion joint design and method of preventing stress corrosion cracking incorporates an internal cylindrical weir or sleeve which defines an inner flushing chamber adjacent the expansion bellows wherein connections are provided on the exterior wall of the expansion joint body to allow the admission of a chemical solution or treating fluid directly onto the inside surface of the bellows from an external connection to the expansion joint. In addition, a further connection is provided to a second flushing chamber surrounding the exterior of the bellows so that a similar solution may be admitted and allowed to overflow from an upper portion of the chamber.

Vibration isolator actuator for a segmented mirror

Abstract: A novel actuator for controlling the position of a mirror segment of a segmented mirror assembly and for isolating the segment from vibration is described, which comprises, a movable control member operatively interconnecting the segment and support structure for the mirror assembly; an actuator assembly, which may comprise an electrically controlled magnet and coil, operatively attached to the control member and responsive to an input signal, for moving the control member to selectively position the mirror segment relative to the support structure; a force amplifier connected to one or both ends of the control member for amplifying the force exerted on the control member, and which may be in the form of a pair of cooperating fluid filled bellows of different sizes coaxially disposed at one or both ends of the control member so that compression of the smaller bellows communicating with the larger bellows results in an amplification of the force imposed on the control member; a position sensor for sensing the position of the control member and providing a corresponding output signal; and programmable electronics for processing the output signal of the position sensor and providing the input signal to the actuator according to a preprogrammed scheme.

Flexible current feeding post

Abstract: A flexible current feeding post for electronic modular assemblies interconnects parallel oriented substrates such as printed circuit boards having electrical circuits mounted thereon and bus plates for power supply, for both mechanical assembly and current distribution. The flexible current feeding post comprises a solid, cylindrical stud for connection to a contact surface of one substrate, a conductive bellows connected to the stud and means connecting the conductive bellows to a contact surface of a second substrate, spaced from the first substrate by a desired distance and generally parallel thereto. The flexible current feeding post affords tolerances with respect to mechanical misalignment of the respective contact surfaces of the interconnected substrates and spacing variations therebetween, thus eliminating undesirable distortion of the interconnected substrates and affording enhanced tolerance to thermal distortions of the substrates during operation, and assuring intimate and uniform connections of the feeding post to the corresponding contact surfaces of the substrates to minimize voltage drops thereacross. Flexible current by-pass means are afforded to increase the current handling capacity of the feeding post.