Suction valve with release timing chamber
US6102680A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1998 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Jul 1, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7892
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In addition to seating on its valve seat during the combined compression and discharge stroke, the suction valve seats on the structure associated with the valve seat which has at least one shallow recessed area. In seating on its valve seat, the suction valve seats on the structure defining the shallow recesses to trap fluid therein. The recesses serve to reduce the area available for adhesion and the trapped fluid pressure provides an opening bias to the suction valve. If necessary, or desired, restricted communication between the compression chamber and the shallow recess can take place to provide a higher pressure in the recess at the time of transition from discharge to suction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.