Fluid seal and rod wiper assembly
US4850602A · kind A · utility
7Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1987 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Nov 30, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3268
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is a fluid seal and rod wiper assembly suitable for insertion in annular groove of a piston housing packing chamber. The rod wiper assembly comprises a generally U-shaped elastomeric rod wiper having a thin lip which wipes a piston shaft and a thicker lip which provides a shoulder for accommodating an interference or compression fitting locking ring. An alternative embodiment includes a cantilever spring which is snap fit into the u-shaped compartment of the rod wiper. Another alternative embodiment includes an O-ring positioned within the u-shaped compartment defined by the rod wiper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.