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| Number | Title | Issue Date |
| 6651546 | Multi-stroke cylinder A multi-stroke air cylinder providing a precisely directed and controlled stroke in the face of lateral, torsional and tilting loads on a tooling plate. The multi-stroke cylinder utilizes a plurality of mechanically linked pneumatic or hydraulic pistons h... | 11/25/2003 |
| 5803031 | Hydraulic actuator in an internal combustion engine A hydraulic actuator including a piston connected to a camshaft. First and second passages extend through the camshaft. The piston is actuated in accordance with differences in pressure applied to the piston through the passages. A bearing rotatably suppo... | 09/08/1998 |
| 5746110 | Drive cylinder A compact drive cylinder with a cylinder barrel, an end cap and a guide cap is provided. In the cylinder barrel an axially sliding piston is arranged, on which a piston rod is mounted which extends through the guide cap. The piston divides a thrust chambe... | 05/05/1998 |
| 5701797 | Sealing system A piston reciprocally movable within a cylinder is sealed to the cylinder wall by fluid at a pressure greater than those of the fluids on the opposed sides of the piston supplied to the space (18) between two seals (19, 20) operative between the piston an... | 12/30/1997 |
| 5393218 | Measuring device for a dough divider Dough (10) should, in a volumetric sense, be measured in dough pieces, which during extended use, must very precisely take place. The improved measuring device can be built in dough dividers and gives, through the specific piston construction (3) with con... | 02/28/1995 |
| 5355769 | Sequentially operated cylinders with load holding valve integrated system In a mechanism for extending or retracting a telescopic unit, the plurality of interconnected cylinders includes an extension passage, a retraction passage and a flow-through passage interconnected to provide a flow path of a retraction signal from the fi... | 10/18/1994 |
| 5341726 | Piston for tank An elongate tank for transport or for storage in bulk of semisolid and fluid materials, such as grease and oil. The tank has an outlet at one end thereof for discharging material contained therein, and has a generally cylindric interior surface. A general... | 08/30/1994 |
| 5314172 | High pressure die cylinder and manifold system A high pressure die cylinder and manifold system including a plurality of die cylinders mounted on a manifold. Each die cylinder includes a cylinder body in which a piston rod and a piston is positioned for limited relative movement with respect to the cy... | 05/24/1994 |
| 5036933 | Supplementary rear-wheel steering for motor vehicles In normal operation, a control or regulating device controls vehicle rear wheel steering in accordance with freely-selectable specifications. If a malfunction of the control or regulating device is detected, the latter becomes inoperative immediately. A p... | 08/06/1991 |
| 4961372 | Closing mechanism for an injection molding machine A closing mechanism of an injection molding machine has a piston-cylinder unit to be pressurized hydraulically. Two partial strokes can be carried out in the unit, of which the first can be run through faster than the second. A displacement tube (7) exten... | 10/09/1990 |
| 4531451 | Multiple chamber coaxial hydraulic jack and control system therefor An hydraulic jack having more than two chambers is disclosed and is intended for use in a system of jacks, the displacement of which is to be synchronized. Each jack has a cylindrical center cavity in which a piston with a cylindrical cross section recipr... | 07/30/1985 |
| 4137015 | Energy conversion system using windmill A system for recovering the energy from atmospheric wind wherein a windmill operates a compressor for compressing air which is stored in one or more tanks. The compressed air is used to drive a prime mover coupled by gear means to an electrical generator ... | 01/30/1979 |
| 4080870 | Multiple position fluid conductor apparatus Total apparatus includes extensible and retractable means for moving a load linearly between two or more spaced positions, the load having a fluid pressure operated motor, and means for delivering fluid from a pressure source to the motor at selected stag... | 03/28/1978 |
| 4023469 | Piston and piston rod construction for pumps and method of flushing piston-type pumps A piston and piston rod construction for use in a double-acting reciprocating pump, and a method of flushing a piston-type pump. The piston has spaced apart rubbers mounted on a body intermediate its length. The rubbers have confronting lips. Each rubber ... | 05/17/1977 |
| 3962956 | Hydropneumatic valve actuator This invention relates to a hydropneumatic valve actuator comprising an outer cylindrical casing and an inner cylindrical casing both having closure means at each end. The inner cylindrical casing is positioned in said outer casing and is transversely spa... | 06/15/1976 |
