61
Clark Julius: Apparatus for aligning pipe ends. Young & Thompson, November 18, 1975: US3920232 (24 worldwide citation)

A pipe end line-up clamp encircles adjacent pipe ends and presses on them at selected points to bring them into alignment so they can be welded together. A frame can be positioned at any selected location about the clamp and pivotally supports the outer end of a hydraulic ram whose inner end carries ...


62
Mark Hutchins: Lifting apparatus. Gray Cary Ware & Freidenrich, August 20, 2002: US06435804 (24 worldwide citation)

The disabled person lifting apparatus permits an object, such as a wheelchair user, to be moved between a first position and a second position in which the first and second positions are at different vertical distances. For a vehicle wheelchair lifting apparatus, the first position may a ground leve ...


63
Henning Baatz, Dieter Rittscher, Hans Joachim Lur: Method and apparatus for the packaging of radioactive wastes. GNS Gesellschaft fur Nuklear Service mbH, Karl F Ross, Herbert Dubno, May 20, 1986: US04590000 (23 worldwide citation)

A method of and an apparatus for the packaging of radioactive waste wherein a steel container is placed in a horizontal hydraulic press chamber with the open end of the container turned toward a hydraulic ram, radioactive waste is accumulated ahead of the open end of this container, the ram is advan ...


64
Philip L Lundman: Hydraulic jack and pump usable therewith. Michael Best & Friedrich, April 13, 1993: US05201494 (23 worldwide citation)

A hydraulic jack includes a linkage movable from a first position to a second position for engaging and elevating a load, a hydraulic ram coupled to the linkage for moving the same toward its second position upon the application of fluid pressure, and a pump coupled to the hydraulic ram for applying ...


65
Peter Gardella, Kevin L Wood: Refuse compactor and transfer chamber. Norwood Enterprises, March 8, 1988: US04729304 (23 worldwide citation)

A stationary chamber is located below an apron on which garbage and other refuse is dumped from collection trucks. An opening in the apron is aligned with an opening in the top of the chamber. The discharge end of the chamber is closed by a gate which slants rearward at an angle of 15.degree. to the ...


66
Patel Kishor J: Electro-hydraulic proportional servo actuator. Applied Power, Nilles James E, April 8, 1975: US3875849 (23 worldwide citation)

Two electro-hydraulic proportional servo actuators are disclosed and each comprises an electro magnetic device such as torque motor or proportional solenoid energizable to operate a three-way hydraulic servo valve which, in turn, effects proportional amplified linear movement of a spring centered hy ...


67
Carlson Robert Philip, Oelschlaeger George Frederick: Safety lock for a linear fluid pressure actuator. Deere & Company, May 16, 1972: US3662653 (23 worldwide citation)

A rigid, elongated spacer of generally U-shaped cross-section adapted to fit over the extended piston rod of a hydraulic ram and having opposite ends engageable with the cylinder body and outer end of the rod, respectively, to prevent retraction of the latter. The spacer is pivotally mounted on the ...


68
Julius F John: Fixed limit lifting jack. Norco, December 26, 1978: US04131263 (23 worldwide citation)

A lifting jack with its elevating linkage has an elongated base supported on wheels and a hydraulic ram horizontally disposed in the base. A block which is a structural part of the base incorporates a hydraulic reservoir, a pump, valving, and a lift-lower control. A single handle serves both to actu ...


69
Bishop Jerald W: Hydraulic utility lift for trucks. June 6, 1972: US3667631 (23 worldwide citation)

A hydraulic utility lift for pick-up trucks and other vehicles consisting of a frame adapted to be mounted under the rear portion of the truck bed and carrying a lift arm operable to lift a load disposed rearwardly of said truck as said arm is pivoted from a downwardly and rearwardly inclined positi ...


70
Gary H Dietzen: Oil and gas well cuttings disposal system. Garvey Smith Nehrbass & Doody L L C, December 1, 1998: US05842529 (22 worldwide citation)

A method of removing drill cuttings from an oil and gas well drilling platform includes the steps of separating the drill cuttings from the well drilling fluid on the drilling platform so that the drilling fluids can be recycled into the well bore during drilling operations. The cuttings are transmi ...