Reinforcement pin for check valve
US6264452A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Dec 15, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7903
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A scroll compressor has a check valve plate assembly with a reinforcing device to increase the strength of the check valve plate. The check valve plate is stamped from a relatively thin steel reed material. Notched areas are provided during stamping to enable the formation of rolled laterally spaced pins which provide an axis along which the check valve plate may pivot. The reinforcing device is in the form of a slot rolled pin, a spiral rolled pin, or a solid pin, fitted within a bore formed by the rolled laterally spaced pins of the check valve plate. The notched areas of the check valve plate are weakened due to the reduction of the local cross sectional area of the laterally spaced pins. Insertion of the reinforcing device significantly reduces the incidence of cracking that occurs at the notched areas of the check valve plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.