Abstract: A hydraulic fluid circuit for a quick rise type lifting jack positions multiple valves that control two stages of the lifting operation of the jack in the same valve housing machined into a base of the jack and thereby reduces the costs involved in manufacturing and assembling the hydraulic circuit of the jack.

Abstract: A hydraulic fluid circuit for a quick rise type lifting jack positions multiple valves that control two stages of the lifting operation of the jack in the same valve housing machined into a base of the jack and thereby reduces the costs involved in manufacturing and assembling the hydraulic circuit of the jack.

Abstract: A battery operated grease gun includes a pump mechanism that employs a speed reducing and torque increasing planetary gearing transmission which rotates a final driver that is a part of the transmission, and a sliding yoke that is reciprocated by the final driver and is coupled to a plunger that dispenses the grease under pressure where the plunger is mounted to the yoke for relative movement therebetween.

Abstract: An air operated liquid pump includes a pump with a reciprocating plunger driven by a piston contained in a cylinder. The plunger is connected to and reciprocates a dispensing piston that moves between two positions relative to the plunger to open and close flow through valve holes that pass through the dispensing piston.

Abstract: An adaptor for generally permanent coupling of a lubricant line to a lubricant fitting. The fitting has a base, a neck, a head, a lubricant passage, and a valve member biased toward a closed position. The adaptor comprises a body having a hole extending therethrough and an insert in the hole having a circular head and a thin-walled cylindrical extension extending from the head slidable in the hole. The extension defines a socket for receiving the head of the fitting on application of the body and insert to the fitting. The extension is radially inwardly deformable into interlocking engagement with the fitting. The head of the insert has a pin extending therefrom within the socket in the direction toward an inner end of the hole. The head includes a passage for flow of lubricant therethrough.

Abstract: In a grease gun having a handle that is manually manipulated from a position extending along the side of the grease gun body to a position oriented at an angle relative to the body to charge the pump of the grease gun with lubricant or some other liquid contained in the gun, and then is moved from the angled orientation relative to the grease gun body to a discharge position or back to the position where the lever handle extends along the side of the grease gun body to operate the pump to discharge the lubricant or liquid, a lock mechanism locks the lever handle in its discharge position extending along the side of the grease gun body preventing it from being moved to its charge position.

Abstract: A hose reel assembly for taking up and feeding out a hose. The assembly includes a non-rotatable shaft having opposite ends, a reel for storing the hose rotatable on the shaft and a hub mounted on the shaft at one side of the reel between the reel and one end of the shaft so that the hub may be slidably applied to and removed from the shaft independent of the reel. The assembly further includes a coupling on the hub for connecting the hub and the hose. The shaft and the hub include passaging for supplying fluid to the hose. A seal is provided between the shaft and the hub adjacent to the passaging for preventing fluid leakage. The hub is releasably connected to the reel for conjoint rotation of the hub and the reel on the shaft and is disconnectable from the reel so that the hub may be removed from one end of the shaft to permit replacement of the seal without removing the reel from the shaft.

Abstract: An automatic air operated grease gun comprising a reciprocating grease plunger for ejecting grease, and a piston, connected to the plunger, for operating the plunger. The piston is slidably mounted in a cylinder to move between a retracted position and an advanced position. A return spring resiliently biases the piston to its retracted position. A switch selectively connects the cylinder to a source of gas under pressure to advance the piston against the return spring. The piston has a plurality of apertures therein, each aperture having an individual seal, and a release for opening the individual seals to relieve the pressure behind the cylinder and allow it to retract under the force of the return spring.

Abstract: A submersible centrifugal pump (10) includes a casing (11) which houses a motor (13) and a pump assembly (14). A shaft (12) which carries the impeller (37) portion of the pump assembly (14) is driven by the motor (13) to draw fluid, in which the pump (10) is immersed, into the casing (11) in one embodiment through inlet ports (38) to be transferred to the pump assembly (14) and thereby pumped to a remote location. The shaft (12) has an axial bore (40) therein which is open at the bottom (41) to receive fluid. That fluid moves upwardly within the shaft (12) and passes out through radial bores (43) to join with the fluid received from the inlet ports (38). As such, internal fluid positioned in a chamber (23) is cooled by the fluid passing through the shaft (12) and that internal fluid in turn maintains the components in the casing (11) cool. In another embodiment, a submersible centrifugal pump (50) has inlet ports (51) formed near the top of its discharge bowl (15).

Abstract: A submersible pump (10) includes a casing (11) which houses a motor (13) and a pump assembly (14). A shaft (12) which carries the impeller (37) portion of the pump assembly (14) is driven by the motor (13) to draw fluid, in which the pump (10) is immersed, into the casing (11) through inlet ports (38) to be transferred to the pump assembly (14) and thereby pumped to a remote location. The shaft (12) has an axial bore (40) therein which is open at the bottom (41) to receive fluid. That fluid moves upwardly within the shaft (12) and passes out through radial bores (43) to join with the fluid received from the inlet ports (38). As such, internal fluid positioned in a chamber (23) is cooled by the fluid passing through the shaft (12) and that internal fluid in turn maintains the components in the casing (11) cool.

Abstract: An improved hydraulic motor includes a cylinder having a head end and a rod end, and a piston reciprocable in the cylinder dividing it into a first expansible chamber toward the head end and a second expansible chamber toward the rod end. Fluid under pressure from a supply source is continually delivered to the second chamber. A fluid directional valve controls the delivery of fluid to and exhaust of fluid from the first chamber for reciprocating the piston within the cylinder. The piston has valving associated therewith for controlling the operation, in conjunction with a relay valve, of the fluid directional valve.

Abstract: A pump (10) for providing water from a source to a remote location includes a casing (11) which receives the water through an inlet port (22) which is provided to the remote location through a discharge port (20). An impeller (30) in the casing (11) is rotated by a motor (23). A diffuser (35) is positioned adjacent to the impeller (30) and has a shoulder (42) facing the inlet port (22). A nozzle (44) is mounted in the inlet port (22) to receive low pressure water from the source which is transmitted to a venturi tube (43) positioned between the diffuser shoulder (42) and the front wall (16) of the casing (11). The venturi tube (43) directs water to the impeller (30) and diffuser (35) which provide water at high pressure, upon demand, through the discharge port (20) and also recirculates high pressure water in the casing (11) to the venturi tube (43) through openings (51) in the wall thereof.

Abstract: An improved runaway control for an air motor operable on increase in speed of the air motor above a speed limit stop the motor. The control includes a pressure-responsive device having an air chamber for air under pressure. Further provided is a movable member which moves away from a first position in response to increase in air pressure in the chamber above a predetermined limit to a second position, and movable back to the first position on reduction of pressure in the chamber below the limit. The movable member, when in its first position, enables the operation of the air motor, and when in its second position, cuts off the operation of the motor. An air pump is interconnected with the air motor for operation simultaneously with the motor for delivering air under pressure at a rate related to the speed of the motor to the chamber.

Abstract: A water supply system includes a motor operated pump (12) which provides water upon demand to a remote location via a discharge pipe (13). When the demand 5 ceases, the pump (12) continues to operate to provide water to an annular chamber (21) which is under air pressure. The annular chamber (21) is formed by a storage pipe (20) generally concentrically positioned around the discharge pipe (13). A pressure switch (17) senses the water pressure in the discharge pipe (13) and stops the pump when a first predetermined pressure level is reached. Then upon the next water demand, water is provided from that in the storage pipe (20) until a second predetermined pressure level is sensed by the switch (17) at which time the pump (12) is activated to provide water through the discharge pipe (13). An air volume control unit (45) maintains the proper air pressure in the annular chamber (21).

Abstract: An apparatus for controlling and monitoring a lubricating system having analog sensors and switches indicating the status of the lubricating system. An analog-to-digital converter is responsive to the analog sensors and switches and provides a plurality of digital sensing signals representative of the status of the lubricating system. A provided memory includes a nonvolatile memory for storing instructions. By using a keypad, an operator selects and inputs parameters into the nonvolatile memory. A microprocessor processes the digital sensing signals in accordance with the parameters stored in the nonvolatile memory. Relays are responsive to the microprocessor and initiate lubrication of the lubricating system. A display, responsive to the microprocessor, indicates the status of the lubricating system.

Abstract: A sound absorbing muffler for a compressed air driven motor has first and second mutually confronting end walls connected by four side walls. A pad of sound absorbing material constructed from SAE No. F-7 polyester felt is contained in the muffler housing. An entrance port at the center of the first end wall supplies exhaust to the interior volume of the muffler housing. A series of depressions in the first end wall disperse the exhaust over a first planar surface of the pad of sound absorbing material. The porosity of the sound absorbing material permits the exhaust along with grease, oil or water carried by the exhaust to pass through the pad. The exhaust exits a second planar surface of the pad at the second end wall of the muffler housing and is discharged from the interior volume of the muffler housing through a plurality of louvers provided in the second wall of the muffler housing.