One-piece composite lip seal
US5163692A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1991 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Jul 15, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05C2225/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A composite one-piece dynamic lip seal forms a dynamic ring seal between static and dynamic surfaces in a variety of applications requiring fluid sealing. The lip seal body is generally U-shaped in cross section and is principally made from a soft elastomeric material. The seal has ID and OD legs on opposite sides of a cavity in its high pressure end, forming ID and OD lips of the seal, either of which can be the dynamic leg of the seal depending upon the application. A U-shaped energizer spring is integrally bonded to the elastomer and is aligned with the U-shaped cross section of the seal so that ID and OD legs of the spring apply radial spring loading to the ID and OD legs of the seal. A reinforcing ring integrally bonded to the elastomeric body of the seal forms an exterior contact surface and an elastomeric reinforcement along a substantial length of the dynamic leg of the seal, from a low pressure end of the seal to an end spaced from the high pressure end of the seal. The reinforcing ring bonds to the elastomeric body, which then forms the contact surface on the dynamic leg of the seal continuously from the reinforcing ring to the high pressure end of the seal. The reinforci…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.