Anti-friction pressure seal
US3967866A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 1975 |
| Grant date | Jul 6, 1976 |
| Priority date | — |
| Expiry date | Jun 9, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/545
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Means are provided for forming an anti-friction pressure seal between a surface and an element movable relative to that surface such that a fluid containing compartment may be divided into zones of different pressures. The seal includes a roller bearing, at least partially received within a cavity in the element, and a spring deformable to be positioned within the cavity between the roller bearing and the walls of the cavity. The spring has a first surface surrounding at least substantially half of the circumference of the bearing to retain the bearing in the cavity. The first surface, when the spring is inserted into the cavity, contacts the roller bearing substantially at only a single location between, but not including, the end sections thereof and substantially all other portions of the first surface are spaced from the roller bearing to minimize contact between the surface and the bearing. A second surface spaced from the first surface is adjacent the wall of the cavity when the spring is inserted into the cavity. Further, resilient means extending between the first and second surfaces are provided within the vicinity of the point of contact between the first surface and the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.