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| Number | Title | Issue Date |
| 6817278 | Piston assembly for hydraulic cylinder A piston assembly for use in a hydraulic cylinder includes a piston head configured to slide axially within the hydraulic cylinder in response to changes in hydraulic pressure. The piston head has an axial through-hole. A piston rod has a proximal end axially abutti... | 11/16/2004 |
| 6289786 | Brake actuator having an improved piston and method of making same A vehicle brake actuator including an improved piston assembly having a piston plate including an upstanding annular rim portion and a piston rod including a shank portion having a generally cylindrical head portion and an annular rim portion on a free en... | 09/18/2001 |
| 6257121 | Piston with piston rod The piston (1) has a ball receptacle (14) for the rod head (4) of the piston rod (2) of a swash plate compressor. For absorbing particularly high pressures the rod head (4) has a relatively large diameter, so that the ball receptacle (14) extends close to... | 07/10/2001 |
| 5388677 | Unit of a piston and a piston rod In a unit of a piston and a piston rod, a piston and a piston rod are connected with each other in a gas-proof manner. To this end, the piston has a closed bottom and a blind hole, into which a sleeve-shaped section of the piston rod is pushed. By means o... | 02/14/1995 |
| 5218763 | Method for manufacturing a swaged piston assembly for an automotive air conditioning compressor A method of forming a composite piston assembly for an automotive air conditioning compressor includes providing 1018 steel alloy, solid connecting rod with an aluminum alloy head. An axial receiving bore is provided in the piston head, which is also fabr... | 06/15/1993 |
| 5163224 | Method of forming and assembling a piston for a hydraulic damper A piston and piston rod subassembly for use with a hydraulic damper is disclosed. The piston is formed from a substantially flat blank having a pattern of bendable tabs provided along a first edge. A bendable skirt is provided along a second edge of the b... | 11/17/1992 |
| 4815360 | Rod-piston connection A rod-piston connection uses a split ring, having two or more segments, provided with a plurality of shallow internal grooves which are adapted to mate with a corresponding plurality of shallow grooves on the piston rod, the outer periphery of the split r... | 03/28/1989 |
| 4505016 | Method of manufacturing a die-cast wobble plate assembly An improved method of manufacturing a swash plate assembly for use in a compressor, fluid motor or similar device in which a plurality of pistons are connected, by means of connecting rods, to a swash plate which drives (or is driven by) the pistons. A pl... | 03/19/1985 |
| 4109364 | Method of making ball and socket joint A ball and socket joint and method of making in which a piston, especially a compressor piston, and most particularly a piston for a compressor that pumps refrigerant, has a top wall and a depending skirt and is connected to the upper end of a connecting ... | 08/29/1978 |
| 3984904 | Internal retaining tabs for a filled piston The invention provides a hollow core filled piston including core retaining means for mechanically interlocking and retaining a core of filler material within the piston against angular and axial displacement. The piston includes a hollow skirt portion de... | 10/12/1976 |
