Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7677034 | Power conversion system A diesel engine with an associated rotary pump pumps a fluid in a path of travel. A linear cylinder motor oscillates a disc. First and second multi stage cylinder pumps with associated attachment members operate in response to the movement of the disc. A hydraulic m... | 03/16/2010 |
| 6557332 | Control valve for switching a hydraulic piston-cylinder unit for purposes of driving an oscillatory machine part A self-propelled combine harvester having a mechanically actuated directional control valve for a hydraulic piston-cylinder unit used for driving the cutter bar in an oscillatory manner. A switching bracket is used to axially move the mechanically actuate... | 05/06/2003 |
| 6241420 | Control system for a vibratory compactor A fluid control system (50) is provided for a work machine (10) having first and second compacting drums (14,16). First and second hydraulic motors (28,32) are connected in series and power first and second vibratory mechanisms (26,30) located within the ... | 06/05/2001 |
| 5787786 | Dual hydraulic oscillator for the reciprocating cutter of an agricultural machine A dual hydraulic oscillator for the reciprocating cutter of an agricultural machine is provided. The dual oscillator has two pistons reciprocating in opposite directions and a single pilot valve, with resynchronization performed twice per cycle of the osc... | 08/04/1998 |
| 5315916 | System of linear hydraulic motors The piston rods (10, 12, 14) of three linear hydraulic motors (M1, M2, M3) are stationary and include fluid pressure passageways (40, 52, 42, 54, 44, 56) which direct fluid pressure into and out from working chambers (16, 34, 18, 36, 20, 38) on opposite s... | 05/31/1994 |
| 4790728 | Dual-rigid-hollow-stem actuators in opposite-phase slurry pump drive having variable pumping speed and force A slurry pump has slurry hopper and dual pumping cylinders. The slurry pumping members are driven by opposite-phase actuators. Each actuator has a rigid-hollow-stem partition dividing the space between the actuator plunger and the cylinder into two drive ... | 12/13/1988 |
| 4658703 | Method and apparatus for extracting heat and mechanical energy from a pressured gas A piston type expander/prime mover utilizes a plurality of pairs of cylinders mounted on a rotatable cylinder support. Each cylinder has an open end and a closed end and each pair of cylinders has their open ends disposed in spaced, opposed relationship. ... | 04/21/1987 |
| 4641496 | Continuous rotary regeneration system for a particulate trap An apparatus and method for continuously regenerating a particulate filter trap comprises: movable means effective to shield a segment of the trap entrance face from the full flow of exhaust gas while permitting a portion of the exhaust gas flow to bleed ... | 02/10/1987 |
| 4438628 | Pump jack drive apparatus A pump jack drive apparatus includes a pair of hydraulic cylinders connected to a walking beam of the pump jack for reciprocating the horsehead, and a pair of microswitches or proximity switches which are closed by the walking beam at the limits of the st... | 03/27/1984 |
| 4404800 | Gas energized engine system A Gas Energized Engine System, according to the present invention, is adapted to drive a piston type gas energized engine having a piston and cylinder system that is operatively interconnected with a crankshaft that transmits rotary force to any suitable ... | 09/20/1983 |
| 4066003 | Hydraulic engine A hydraulic engine having a frame on which a crankshaft is rotatably mounted between a plurality of cylinders. The individual cylinders are rockingly mounted on the frame arranged as opposed pairs of cylinders and their piston rods are operatively connect... | 01/03/1978 |
| 3973470 | Hydraulic injection engine The present invention relates to an hydraulic motor adapted to be used in automobiles and other vehicles and which is derived from a standard reciprocating piston engine. Instead of igniting a fuel/air mixture, the present invention supplied hydraulic flu... | 08/10/1976 |
| 3945206 | Control system for hydraulic presses comprising a plurality of press rams A control system for hydraulic presses comprising a plurality of press rams, an intensifier having a primary chamber which is connected by a supply conduit to a pump, and a valve which is associated with the primary chamber and when open permits the liqui... | 03/23/1976 |
| 3932989 | Resonant gas-expansion engine with hydraulic energy conversion An illustrative system is disclosed for use as a rotary-drive engine, utilizing combustible fuel and a hydraulic system of energy conversion. An engine block defines a pair of expansion cylinders (combustion chambers) and an associated concentric pair of ... | 01/20/1976 |
