Press-fit retaining ring with extrusion-holding chamfer for wobble-piston cup seal
US4924759A · kind A · utility
5Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1988 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Aug 1, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3204
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A wobble piston apparatus incorporates a cup-type seal seated on a land formed about the head of the piston, and secured by an annular ring. The head of the piston and the ring have chamfered edges which facilitate an engagement of the ring with the piston head, on assembly, and the chamfered edge of the ring further cooperates with the piston to define a void which accommodates therein an extruded expansion of an innermost, peripheral edge of the seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.