Sealing arrangement for gear-type fluid displacing machines
US4029446A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1975 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Dec 31, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C19/085
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gear-type fluid displacing machine includes a housing having a chamber and two side sections overlying opposite ends of the chamber, a pair of mating gears in the chamber for generating a high pressure area therein as the gears rotate, and annular bearing members surrounding trunnions associated with the gears at opposite ends of the chamber each of the bearing members having an end which faces one of the side sections of the housing and being formed with a groove. The sealing arrangement includes a generally U-shaped resilient sealing element in each of the grooves and having an open side in communication with the high pressure area. The sealing element has at least one wedge-shaped leg which is pressed into sealing contact with an associated side section by its own resilience and by the force exerted by the pressure fluid entering the open side of the element from the high pressure area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.