Packing member
US4145057A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 28, 1977 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Nov 28, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3212
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A packing member comprising an annular body having a circular groove extending axially thereinto through an end wall to form inner and outer sealing lips utilizes a resilient member embedded in the annular body to exert a radially directed force to a wall surface of the groove to actuate one of the sealing lips. The other sealing lip has a plurality of spaced-apart circular holes extending axially thereinto through the first end wall of the body. In one embodiment, the resilient member is a garter spring carried in a recess formed in the inner wall surface of the groove to actuate the inner sealing lip. In another embodiment, the resilient member is a curved solid rod carried in a recess formed in the outer wall surface of the groove to actuate the outer sealing lip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.