Abstract: The compressor is provided with an oil separator for separating oil from refrigerant gas introduced into a separation chamber, an annular space for reserving oil separated from the refrigerant gas, and a reservoir chamber for reserving the thus separated oil. The oil separator is provided in a cylindrical hole formed in a discharge chamber from which the refrigerant gas is discharged and a lid for partitioning the cylindrical hole from the discharge chamber is provided in the cylindrical hole. The oil separator introduces the refrigerant gas from the discharge chamber to the separation chamber via the introduction passage. The annular space is provided around the lid and connected to the reservoir chamber via an oil passage. The reservoir chamber is connected to a crank chamber of a pressure lower than that in the discharge chamber.

Abstract: A vacuum assisted bilge pump small enough for the crowded spaces below decks in the engine and pump room of a boat which can also function as a transfer pump, a crash pump and a fire extinguisher. The pump comprises two chambers and is internally configured to aid in the separation of gas and liquid increasing pump throughput.

Abstract: There is disclosed a hydraulic actuating device for actuating a shift rod in particular of a gearbox for motor vehicles, which comprises a cylinder chamber provided in or on a gear housing for accommodating a shift piston which is actively connected to the shift rod and which divides the cylinder chamber into two working chambers which can selectively be acted upon by a pressure medium from a reservoir for the latter, said working chambers being separated from one another by means of a sealing arrangement arranged on the shift piston. The sealing arrangement is designed in a valve-like manner so that, when at least one working chamber is acted upon by pressure medium, it connects said working chamber to an auxiliary chamber which is delimited by the sealing arrangement and which in turn can be connected to the reservoir for the pressure medium.

Abstract: The present invention provides a vehicle air compressor device which includes a motor device serving as a driving power source, and a drier device that conducts compressed air; the drier device arranged opposite to the motor device; and a supporting member for supporting the air compressor device on a vehicle at a portion where the motor device and the drier device are adjacent to each other.

Abstract: An expander that converts the thermal energy and the pressure energy of a working medium into mechanical energy includes, within a casing (12, 15, 18), an operating part such as a group of axial piston cylinders operated by the working medium introduced into an operating chamber, and a hermetically sealed lubrication chamber (102) in which oil for lubricating at least the operating part resides. Breather chambers (101, 103) are provided in an upper part of the lubrication chamber (102), and a working medium discharge chamber (90) into which the working medium is discharged from the operating chamber is made to communicate with the breather chambers (101, 103) via breather passages (B1 to B4).

Abstract: Pump chambers are disclosed that include at least one spacer element therein to prevent any gas in the pump chamber from being pumped from the pump chamber during pumping. In some embodiments, the pump chambers are included in removable pumping cartridges that are constructed and configured for coupling with reusable pump drives. Some embodiments of pump chambers including spacer elements therein comprise a substantially rigid component forming a wall of the pump chamber with a flexible or movable membrane disposed on the wall to form the chamber. Spacer elements in such pump chambers are, in some embodiments, attached to a wall of the substantially rigid component so as to prevent the movable/flexible membrane from contacting the wall during pumping.

Abstract: A strut exercise assembly for an aircraft comprises a fluid strut telescopic along a path. A couple selectively connects the fluid strut to a driver. The driver telescopes the fluid strut along a path through the couple.

Abstract: A pump (10) includes a chamber (14) communicating with a fluid inlet (12) and a fluid outlet (13) above the centerline thereof to minimize dead air space where air bubbles might form. A connector (21) having a bend or elbow (26) is formed at the fluid inlet (12). Upon actuation of a solenoid (37), a plunger (39) carrying a diaphragm (42) is moved to draw fluid around the elbow (26), through a valve (19) positioned at the fluid inlet (12), through the chamber (14), and out of the pump (10) through a valve (30) positioned at the fluid outlet (13). The energy of the fluid which might otherwise create a water hammer effect is absorbed by the elbow (26) prior to reaching the pump (10).

Abstract: Pump chambers are disclosed that include at least one spacer element therein to prevent any gas in the pump chamber from being pumped from the pump chamber during pumping. In some embodiments, the pump chambers are included in removable pumping cartridges that are constructed and configured for coupling with reusable pump drives. Some embodiments of pump chambers including spacer elements therein comprise a substantially rigid component forming a wall of the pump chamber with a flexible or movable membrane disposed on the wall to form the chamber. Spacer elements in such pump chambers are, in some embodiments, attached to a wall of the substantially rigid component so as to prevent the movable/flexible membrane from contacting the wall during pumping.

Abstract: Pump chambers are disclosed that include at least one spacer element therein to prevent any gas in the pump chamber from being pumped from the pump chamber during pumping. In some embodiments, the pump chambers are included in removable pumping cartridges that are constructed and configured for coupling with reusable pump drives. Some embodiments of pump chambers including spacer elements therein comprise a substantially rigid component forming a wall of the pump chamber with a flexible or movable membrane disposed on the wall to form the chamber. Spacer elements in such pump chambers are, in some embodiments, attached to a wall of the substantially rigid component so as to prevent the movable/flexible membrane from contacting the wall during pumping.

Abstract: A torque transmitting mechanism has a hydraulically actuated piston that is slidably disposed in a cavity. An apply chamber, formed by the piston and cavity, is filled with hydraulic fluid when the torque transmitting mechanism is to be engaged. One or more gas permeable—liquid impermeable mats are secured in a passage between the chamber and a non-liquid area in a transmission. During initial engagement of the torque transmitting mechanism, any entrapped air is forced out of the chamber through the mat while the leakage of liquid is inhibited. In a rotating torque transmitting mechanism (clutch), the mats are installed near the innermost periphery of the chamber. In a stationary torque transmitting mechanism (brake) the mats are installed near the top outermost periphery of the chamber.

Abstract: A hydraulic actuation device for the adjustment of units in motor vehicles includes a piston-cylinder unit with a housing and a piston displaceably arranged in the cylinder portion of the housing and/or in a guide sleeve in the housing. The piston-cylinder unit may be a slave cylinder or a master cylinder. The cylinder has a connection channel along one of its surface lines with an outer channel wall which is located in a portion of the connection channel located farthest from a center axis of the cylinder. The outer channel wall approximately follows a straight line and has an angle of inclination relative to the center axis which is greater than zero and preferably equal to or greater than a maximum installation angle of the installed position of the housing. The described arrangement of the deaeration bore hole at the highest possible location in the pressure space of the cylinder is advantageous for a deaeration of the hydraulic system for repairs and servicing.

Abstract: A pump includes a housing defining a cavity, at least one bore, a bore inlet, and a bore outlet. The bore extends from the cavity to the outlet and the inlet communicates with the bore at a position between the cavity and the outlet. A crankshaft is mounted in supports and has an eccentric portion disposed in the cavity. The eccentric portion is coupled to a piston so that rotation of the crankshaft reciprocates the piston in the bore between a discharge position an intake position. The bore may be offset from an axis of rotation to reduce bending of the piston during crankshaft rotation. During assembly of the pump, separate parts of the housing can be connected together to facilitate installation of internal pumping components. Also disclosed is a method of reducing vapor lock by mixing vapor and liquid portions of a substance and introducing the mixture into a piston bore.

Abstract: The invention relates to a piston pump for a slip-controlled hydraulic vehicle brake system. The piston pump has a piston which is driven to execute a stroke motion, and two check valves as an inlet valve and outlet valve for controlling the fluid flow through the piston pump. The outlet valve has a valve closing spring that effects a fast closure of the outlet valve. To enable completely evacuating a positive displacement chamber of the piston pump, the invention includes connecting an evacuation valve, embodied as a springless check valve with a small diameter and with a lightweight valve closing body, hydraulically parallel to the outlet valve.

Abstract: A fluid mounting (20) for isolating or damping vibration between a vibrating member (21) and a structure (23). In one aspect, the fluid mounting (20) includes inner (22) and outer (24) members, a flexible element (26), first (28) and second (30) operating chambers, a fluid passageway (32) interconnecting operating chambers (28, 30), and a partitionless volume compensator (36) including a compensator chamber (38) separated into a gas-filled portion (40) and a fluid-filled portion (42). Notably, the chamber (38) is devoid of any separating barrier. At least one lock passage (44) interconnects the fluid-filled portion (42) with one of the first and second operating chambers (28, 30), and a working fluid (34). Preferably a bubble trap depression (46) focuses any gas bubbles into the lock passage (44). In another aspect, mounting (20) may include laminated shim construction with sloping profiles thereon to prevent bubble trapping.

Abstract: A spring brake actuator (10), with a large-force compression spring (72) in a spring chamber (101) of the housing, has vent openings (102) in the housing communicating with the spring chamber (101). A gas permeable filter element (104) covers the vent openings (102), and a filter frame assembly (106) is disposed over the filter element. The filter frame assembly (106) defines tortuous air passages from the filter element (104) to atmosphere so that air entering the spring chamber from atmosphere will be substantially free of contaminants.

Abstract: An improved displacement pump is provided with flow path means preventing hysteresis-causing bubbles from accumulating in piston clearances.

Abstract: A telescoping hydraulic hoist formed from a non-corrosive material provides bearings and hydraulic seals about the bottom portion of each intermediate moving stage. The bearings and hydraulic seals are thus always maintained within the hoist and are not exposed to dust or particulate matter from outside the hoist. Air flows into and out of the air spaces between adjacent stages through air breathers. The hoist may also include variable length stroke limiters, and a cushion member which partially closes off the hydraulic inlet as the innermost stage is fully retracted to slow the hoist motion in the final stages of retraction.

Abstract: A compressor compresses gas containing misted oil. The compressor has a drive plate located in a crank chamber and mounted on a drive shaft and a piston operably coupled to the drive plate and located in a cylinder bore. The drive plate converts rotation of the drive shaft to reciprocating movement of the piston in the cylinder bore to vary the capacity of the cylinder bore. The piston compresses gas supplied to the cylinder bore and discharges the compressed gas from the compressor by way of a discharge chamber and a discharge passage. An oil separating mechanism is disposed midway in the discharge passage to separate the oil from the gas flowing in the discharge passage. A storing chamber is defined in the lower portion of the separating mechanism to store the oil separated from the gas. A supplying passage connects the storing chamber with the crank chamber to supply the oil to the crank chamber from the storing chamber. A supplying valve is disposed midway in the supplying passage.

Abstract: In a work cylinder (1) a ring (10) has been respectively inserted in the cross-sectional plane of the line connection (for example 6), which has a conduit (13) corresponding with the connection. At the highest point in the work cylinder (1) this conduit (13) is connected with the pressure chamber (for example 4) via an inlet opening (14). This arrangement has the advantage that the entrained air is carried along with the flow in the course of the movement of the piston (3). The air reaches the outside through the reservoir.

Abstract: A technique for detecting and containing liquid leaks in a liquid pumping, gas-operated diaphragm pump, and for stopping the pump operation when such leaks occur. If there is a leak in such a pump, the exhaust air gets contaminated with the liquid. With this technique the pump exhaust gas is captured in a container where any liquid within the gas is separated and is allowed to accumulate at the container bottom. The level of liquid accumulated at the container bottom is sensed, and when it reaches a predetermined level, a signal is send to a pneumatically operated shutoff valve to stop the pump operation by stopping the inflow of gas into the pump, or the outflow of liquid from the pump, or to stop the inflow of liquid into the pump. In addition, when the accumulated liquid reaches a predetermined level, a signal may be sent to a pneumatically operated warning device, turning it on.

Abstract: In a lubrication system subject to two phase flow, the oil pump is provided with a capacity such that it can always pump sufficient oil plus the refrigerant and/or excess oil. The excess oil and/or outgassed refrigerant is vented to provide the desired lubricant flow.

Abstract: A self-bleeding multi-stage or single-stage hydraulic cylinder system is disclosed which automatically bleeds entrapped air from within the cylinder each time the cylinder is cycled. The self-bleeding structure preferably includes a fixed elongated tube mounted to the base plate of the cylinder, and an axially moveable elongated tube telescopically mounted on the fixed tube. A biasing compression spring forces the moveable tube upward to a predetermined extent when the cylinder is extended. Upon contraction of the cylinder, air trapped therein is purged or bled from the cylinder through the top end of the axially moveable elongated tube into a fluid reservoir. In the final stage of contraction of the cylinder, hydraulic fluid is forced through the fixed and moveable elongated tubes thereby forcing the remaining air trapped therein out of the cylinder and into the hydraulic fluid reservoir.

Abstract: An air over oil intensifier has an oil chamber having first and second ports (C) and (E), respectively, opening into a highest collection point of the cylindrical interior of the oil chamber defined by an upwardly and inwardly tapering surface (D) at a top of the cylinder in both a vertical and a horizontal position.

Abstract: A housing of a reciprocating gas compressor comprises a partition member separating an upper suction chamber through which gas passes and a lower crankcase chamber in which a crankshaft rotates and which has an oil sump at the bottom. The partition member is imperforate except for sealed openings through which cylinder sleeves and hydraulic fluid lines extend between the chambers. A conduit located on the housing exterior and connected between the chambers performs three functions, namely: enables gas flow in either direction to effect pressure equalization; enables oil to flow by gravity from low points in the upper chamber into the sump; and enables oil mist in the gas flow through the conduit to coalesce on the inner walls of the conduit and flow by gravity into the sump.

Abstract: A multi-piston swash plate type compressor for an air-conditioning system used in a vehicle such as an automobile, including a cylinder block body having a swash plate chamber formed therein for receiving a swash plate and cylinder bores formed therein for receiving pistons which are reciprocated by rotation of the swash plate. The compressor has a suction chamber which is fed with a refrigerant including lubricating oil from an evaporator of the air-conditioning system and a discharge chamber which feeds the compressed refrigerant to a condenser of the air-conditioning system. When the compressed refrigerant is discharged from the cylinder bore into the discharge chamber through a discharge reed valve, all of the discharged refrigerant is impinged on the peripheral and inner wall so as to separate the lubricating oil from the refrigerant, whereby an effective damping and sealing oil layer is formed between the discharge reed valve and the valve seat thereof.

Abstract: A hydraulic pilot operated directional control valve (30; 60; 70) in which at least one pilot hydraulic pressure chamber (40, 41; 76) is formed within a block (39; 64; 75) of a hydraulic pilot operating section (32, 33; 61; 72), and pilot hydraulic fluid is led into the pilot hydraulic pressure chamber to drive a spool (37, 38; 74). A drain passageway (54; 82) is provided in the vicinity of the pilot hydraulic pressure chamber (40, 41; 76) within the block (39; 64; 75), and the pilot hydraulic pressure chamber and the drain passageway communicate with each other through minute passageway means (52, 53; 83) for bleeding air.

Abstract: A control system for a pneumatic actuator uses pressurized gases, such as air, as the actuating medium. Such gases and particularly air commonly contain moisture which condenses to form a liquid, such as water, which collects in a closed chamber of an expandable chamber assembly in the pneumatic actuator. In cold climates, the water freezes, preventing proper control of the pneumatic actuator. By providing a control system having a valve positioned elevationally higher or in close proximity to a pneumatic actuator and a tube which extends into the closed chamber of the expandable chamber assembly, water which is contained in the closed chamber is expelled from the elevationally lowest portion of the assembly when the valve is shifted to exhaust the air from the control system.

Abstract: In coolant systems oil mixed with the coolant is often removed in a separate oil separator on the high-pressure side of the compressor. In order to obtain a compact design in a coolant system comprising a unit including an oil-injection rotary compressor, a pressure-gas cooled driven motor and an oil separator, the oil separator is applied directly to the drive motor connected to the rotary compressor.

Abstract: A container arrangement for supplying with an oil a hydraulic system and a transmission of a vehicle, the arrangement comprises an element containing a supply of an oil to be used both for a hydraulic system and a transmission of the vehicle, a lubricant pump for supplying the oil to the transmission, a hydraulic pump for supplying the oil to the hydraulic system, and an additional container located above an oil level in the element so that the hydraulic pump aspirates always filtered oil from the additional container for the hydraulic system.

Abstract: A charge forming apparatus or carburetor having a mixture passage and a throttle valve arranged therewithin. A fuel pressure control mechanism comprises a chamber from which controlled fuel is fed to the mixture passage. A flexible diaphragm defines one of the walls of the fuel chamber. A cam is formed at a throttle shaft which supports the throttle valve. An acceleration pump comprises a cylindrical chamber, a piston received in the cylindrical chamber, and a spring for contacting the piston with the cam on the throttle shaft.

Abstract: A muffler for motor compressors comprising a body closed at the lower side by a cover and provided on its frontal wall with a hole through which the refrigerating gas is sucked. The gas introduced into the interior of the body strikes against the rear wall of the body and is diverted toward two narrow passages formed by the lateral internal walls of the body and by vertical walls of an M-shaped element located internally of the body. The inclined walls of the element favor the collection of the oil which has separated from the refrigerating gas and directs it toward an inclined plane which facilitates the discharge of the oil, by gravity, through a groove made in the body of the muffler.

Abstract: The automatic purger has an intermediate chamber (11) one of the walls of which is formed by an elastic diaphragm (10), termed front diaphragm, whereas the other wall is formed by a second elastic diaphragm (12), termed rear diaphragm. This chamber is connected to a purger (20) formed by a body (21) defining a small internal enclosure (22) in which an element (25), which is highly permeable to the gas, is disposed. The invention is applicable to a hydraulically controlled or actuated pump of the reciprocating or displacement type.

Abstract: A stationary pressure bleed stem and a movable pressure bleed stem are mounted on a base plate to adjust for varied spacing between the master cylinder ports at the reservoir bottom. The fixture is clamped over the master cylinder reservoir. The stems may be interchangeable with other similar stems of various dimensions to accommodate for variations in dimensions of different master cylinders. The device simplifies and expedites pressure bleeding of master cylinders having different configurations.

Abstract: In a swash-plate type compressor, a partition wall, which separates a suction passageway extending through the cylinder block and the valve plates from the swash plate chamber, has its lateral wall formed with a refrigerant gas inlet opening which communicates the suction passageway with the swash plate chamber. The refrigerant inlet opening opens in the suction passageway with its opening end directed upstream in the refrigerant gas flow in the suction passageway. The partition wall has two opposite end wall portions, at least one of which is formed with a refrigerant gas outlet opening communicating the swash plate chamber with the suction passageway.

Abstract: In a swash-plate type compressor, a refrigerant gas deflecting wall is formed in a suction passageway extending through the cylinder block and the valve plates, the deflecting wall extending substantially at right angles to the direction of flow of refrigerant gas travelling in the suction passageway. The suction passageway is partitioned from the swash plate chamber by a partition wall which has an axially extending portion formed with an opening. The refrigerant gas flowing in an upstream portion of the suction passageway is deflected by the refrigerant gas deflecting wall into the swash plate chamber through the above opening to have lubricant oil separated therefrom, and then is delivered into a downstream portion of the suction passageway through the same opening.

Abstract: A vehicle height adjusting device includes a source of pressurized air, and an elevating device receiving the pressurized air from the source to change the overall length thereof, thereby changing the height of a vehicle. A drain separator is connected between the source of pressurized air and the elevating device, and an exhaust valve is connected to a drain port of the drain separator and selectively connects the drain separator with the atmosphere. A water collective filter element such as glass wool or the like is contained in the drain separator.

Abstract: A partition member divides the interior of the rear cylinder head into a low pressure chamber and a high pressure chamber on one side of the partition member facing the valve plate and into an oil separating chamber on the opposite side. Formed in the high pressure chamber at its peripheral portion are first and second oil collecting chambers which communicate with the drive shaft-fitted hole of the cylinder block, allowing lubricating oil therein to be fed to the hole. The oil separating chamber is provided with a guide wall for guiding suction fluid in a swirling manner. A third oil collecting chamber is defined between the guide wall and the inner peripheral wall of the rear cylinder head and communicates with the oil sump in the cylinder block, allowing lubricating oil therein to be returned to the oil sump.

Abstract: A swash plate compressor of light weight construction having a cylinder block defining weight reducing tubular cylinder bore portions which form, with its outer shell, a low pressure gas upper inlet channel and a pair of low pressure gas lower exit channels. Aperture means are provided in one of the heads and its associated valve plate to allow direct axial flow communication from the compressor suction inlet to the upper inlet channel for receiving a mixture of low pressure gas and oil. Aperture means are formed in the compressor heads and their associated valve plates providing communication from the upper inlet channel to the compressor low pressure gas suction chambers via a weight reducing swash plate space that completely exposed the swash plate and each of the lower exit channels.

Abstract: A refrigerant compressor comprising a balance hole communicating between a crank chamber and a suction chamber for returning the blow-by gas in the crank chamber to suction chamber, is provided with an oil separating member in a discharge chamber to separate oil in the compressed refrigerant gas. The separated oil is accumulated in an accumulating zone in the discharge chamber and returns to the crank chamber through an oil flowing passageway which communicates between the accumulating zone and the crank chamber thereby to reduce the oil leakage into the refrigerant circulating system.

Abstract: A refrigerant compressor unit which includes a balance hole communicating between the crank chamber and the suction chamber for returning blow-by gas in the crank chamber to the suction chamber. The unit is provided with an oil collecting zone within the discharge chamber and has an oil accumulating chamber formed on a lower portion of the cylinder head. Oil mixed with compressed refrigerant gas within the discharge chamber adheres the inner surface of the discharge chamber and flows into the collecting zone. The collected oil is accumulated in the accumulating chamber and returns to the crank chamber through an oil passageway between the accumulating chamber and the crank chamber, thereby reducing the oil leakage into the refrigerant circulating system.

Abstract: A reservoir in a master cylinder for use in a vehicle braking system comprising two or more barrier plates vertically spaced and fitted in the reservoir to partition the interior of the reservoir into three or more chambers. Each of the plates has one or more through holes for restricting fluid flow across the plate, thereby preventing ingress of air bubbles into pressure chamber of the master cylinder.

Abstract: There is disclosed herein a method for repairing a bleeder valve aperture on a disc brake caliper or the like and a device for use in practicing this method thereby eliminating the necessity of replacing the caliper housing. The repair method includes the drilling of the damaged aperture, tapping the enlarged aperture to create new threads thereon, and the insertion of a repair sleeve device having an externally threaded surface and a valve seat and threaded surface machined internally therein. This repair sleeve device is designed to cooperate with the bleeder valve and the caliper housing so as to allow the bleeder valve to function normally. Alternatively, a repair sleeve device having a smooth external surface and designed to be press fitted into an accurately reamed aperture is also contemplated.

Abstract: A fluid motor for a backhoe or the like. A hollow motor cylinder is provided with upper and lower end plates to define a motor chamber through which a generally vertical shaft extends. The shaft is journalled for relative rotation and a first vane is located within the motor chamber and is secured to the shaft and sealingly engages the cylinder and the end plates. A second vane is located within the motor chamber and is secured to the cylinder and sealingly engages the shaft. Ports of a first set are interconnected for continual fluid flow between each other and open into the chamber adjacent one side of the second vane and include at least one port in each of the end plates. Ports of a second set are interconnected to each other and open into the chamber adjacent the other side of the second vane and include at least one port in each of the end plates.

Abstract: An integral power steering assembly of the type which includes a housing defining a power cavity with a rack-toothed piston movably supported in the cavity and in meshing engagement with a sectored gear which in turn rotates an output shaft. A control valve is supported by the housing for controlling the flow of pressurized fluid from a source to the cavity on one side or another of the piston and the return flow from the opposite side of the piston whereby the piston is moved in alternative and opposite directions. An input shaft forms a part of and controls the control valve. Mechanical connections also interconnect the input shaft and an output shaft for rotating the output shaft in response to rotation of the input shaft in the event of the lack or loss of fluid pressure to move the piston hydraulically. These components are in the form of an integral or unitized package which may be attached to a vehicle as one unit.