Coaxial pressure fill fitting and standpipe drain
US4932446A · kind A · utility
2Cited by
15References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1988 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Oct 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86332
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Pressure filling of an elevated liquid reservoir from a blind servicing location is successfully accomplished by a gravity drain extending from a reservoir vent overfill to the servicing location. A dust cap serves to cover the pressure fill hardware fitting and to provide a primary seal for the drain. A second drain seal is closed by engine operating pressure and opened by application of the pressure fill hardware fitting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.