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| Number | Title | Issue Date |
| 6932351 | Packing case for cooling compressors and other machinery A packing case for cooling compressors and other machinery is disclosed. A packing case includes an opening through which a movable machinery shaft may be inserted such that the packing case is mounted on the shaft. In an exemplary embodiment, the packing case conta... | 08/23/2005 |
| 6712363 | Compression ring sealing device with end gap control and a method of manufacturing same A sealing method and method according to which a first and second ring are each provided with split ends, and an arcuate lip extends from one end portion of the each ring and in an axial direction relative to the ring and projects outwardly from the face of the ring... | 03/30/2004 |
| 6695317 | Seal The invention relates to a seal (1) for separating a first chamber (2) from a second chamber (3) in a device (4) for aspirating and/or dispensing fluids (5), wherein the seal (1) is embodied to be ring-shaped and to act on an outer surface (6) of a piston... | 02/24/2004 |
| 6655697 | Piston oil ring having land flanked by concave sidewalls An oil control ring for a piston of an internal combustion engine has an annular body defining a central axis. The ring has a U-shaped cross-section formed of a centrally positioned web extending parallel to the axis and a pair of axially spaced rail port... | 12/02/2003 |
| 6347575 | Low emission piston and ring for internal combustion engine A piston and compression ring combination with a piston having a generally cylindrical configuration for mounting in a cylinder of an internal combustion engine, an annular groove adjacent the top of the piston; and a piston ring having an upper inwardly ... | 02/19/2002 |
| 6206379 | Second pressure ring for Al cylinders and its producing method The present invention is for producing stably a second pressure ring which both keeps a lubricant-scraping property and prevents the cylinder side from being longitudinally scratched. According to the invention, a second pressure ring made of iron without... | 03/27/2001 |
| 6105970 | Seal arrangement A sealing arrangement for establishing a seal between two machine elements, such as a rod or piston undergoing axial motion within a housing. A rod or piston seal is arranged in a groove of the second machine element, which typically is the housing of the... | 08/22/2000 |
| 5921553 | Sealing ring assembly for a single sealing ring piston A sealing ring assembly for installation in a single sealing ring groove of a piston that is for use in an internal combustion engine, hydraulic cylinder piston, or the like, and replaces the top and second ring seals as are presently utilized, which seal... | 07/13/1999 |
| 5253877 | Piston ring having tapered outwardly extending wiper A piston head assembly has one, two or more grooves to receive piston rings. One or more of the grooves may receive multiple piston rings. One of the piston rings may have a wiper extension on the lower outside edge of the ring either of metal or elastome... | 10/19/1993 |
| 4185842 | Seal ring An improved composite seal ring is provided by making the L-shaped main seal ring and auxiliary seal ring of a thermoplastic or thermosetting synthetic resin and the ratio of the axial thickness of the thin wall portion of the main seal ring to the axial ... | 01/29/1980 |
