21
Jeffrey L Beck, Larry D Taylor: Rotary drillstring guidance by feedrate oscillation. Conoco, February 26, 1991: US04995465 (36 worldwide citation)

A drilling method and apparatus for directional drilling of a borehole. The apparatus includes a retrievably mounted downhole monitor for sensing parameters of the drill rod to which a drill bit is attached. A bent-sub is connected with said drill rod behind the drill bit to position the drill bit t ...


22
Percy Fretwell, Stanton D Saucier, Bernard G Doucet: Vehicle lifts. Ricon Corporation, Darby & Darby P C, September 17, 1996: US05556250 (34 worldwide citation)

A vehicle lift, as for wheelchairs, incorporates a horizontally disposed load platform pivotally affixed to a laterally spaced-apart parallelogram elevating frame which is in turn pivotally affixed to a carriage, allowing a composite travelling assembly (platform, elevating frame and carriage) to be ...


23
W Keith Moffatt, Billy J Bauscher, Richard Alan Zwicky Jr: Portable battery powered crimper. Greenlee Textron, Trexler Bushnell Giangiorgi & Blackstone, March 17, 1998: US05727417 (34 worldwide citation)

A hydraulic drive tool such as a crimping apparatus which includes a crimp head assembly and a body portion which are arranged in an axially elongated configuration to balance a grip area of the apparatus along the center of gravity of the apparatus. The crimping apparatus includes a hydraulic drive ...


24
Heikkinen Leo L: Apparatus for measuring, cutting and splitting timber. Jacobson and Johnson, January 28, 1975: US3862651 (34 worldwide citation)

An apparatus for automatically measuring, cutting and splitting timber having a bed for supporting the timber, a saw for cutting off the timber and a hydraulic ram that performs the dual function of splitting the timber during the forward stroke of the ram and advancing the uncut timber into a posit ...


25
Christopher J Greenwood: Hydraulic control circuits for continuously-variable-ratio transmissions. Torotrak, Davis Bujold & Streck, February 25, 1992: US05090951 (34 worldwide citation)

A hydraulic control valve for a continuously-variable-ratio transmission (CVT), particularly one of the toroidal race rolling traction type. The transmission includes hydraulically-operated clutches (25,26) whose capacity to transmit torque varies with the operating pressure supplied to them. The tr ...


26
Michel Armand: Hydraulically controlled self-contained multifunctional tool such as shears/separator. Hydr Am, Wall and Roehrig, December 28, 1993: US05272811 (33 worldwide citation)

A hydraulically controlled self-contained multi-functional hand tool including a hydraulic ram portion with a rod that activates two blades or arms. The blades articulate about a common pin and are mounted on a fork joint which is securely fixed to the body of the ram. Opening and closing of the bla ...


27
William R Gaiser, James Niepoky: Parison ejector for an injection molding apparatus. The Broadway Companies, Biebel French & Nauman, November 1, 1983: US04412806 (33 worldwide citation)

A parison ejector is used in combination with an injection molding apparatus of the type for molding parisons having an injector portion including a plurality of mold cavities communicating with a source of molten plastic material, an ejector portion for engaging the injector portion which includes ...


28
Ralph S Tufenkian, Raul S Caballero: Bin lifting mechanism. Western Waste, Noel F Heal, October 18, 1988: US04778327 (33 worldwide citation)

A truck-mounted lifting mechanism is provided for loading containers, such as waste bins, on a truck so that the container can be positioned where its weight will be reasonably distributed between the front and rear wheels. The lifting mechanism includes a track extending along the length of the tru ...


29
Percy Fretwell: Vehicles and vehicle lifts. Ricon, October 19, 1993: US05253973 (32 worldwide citation)

A lift for attachment to a vehicle for moving mobility-impaired passengers between lowered and raised positions for entry and exit. A platform (27) is affixed to an unequal modified parallelogram structure (20), the combination being supported on movable rails (40,41) and carried by rollers (90, 91) ...


30
Arlen J Ostreng: Aluminum/steel can separator and baler. Williamson Bains Moore & Hansen, November 20, 1984: US04483248 (32 worldwide citation)

The recycling machine is provided with a baling chamber having a cyclable hydraulic ram. The ram cycles continuously, and each time it retracts, no more than a predetermined number of cans are admitted to the baling chamber for crushing and adding to the bale therein. A counting mechanism is provide ...