Pipe coupling used with automatic connecting and disconnecting device
US4903730A · kind A · utility
2Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1989 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Jul 12, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87957
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipe coupling consisting of a male and female elements for connecting and disconnecting a hydraulic or pneumatic piping used for industrial machinery. Each coupling element includes a check valve therein which is actuated by connecting and disconnecting operation to automatically open the passageway of the coupling when it is connected and to automatically close it when it is disconnected. The inventive pipe coupling is designed to be used with a conventional automatic connecting and disconnecting device such as automatic coupling device for large scaled industrial machinery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.