Push button reverse valve for power tool
US5199460A · kind A · utility
7Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1992 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Apr 13, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86839
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A rotary spool reversing valve is described which is operated in rotation by two parallel opposed push buttons. The spool is positioned in line with the incoming air passage permitting incoming air to flow axially through the spool directly to forward or reverse motor ports with a minimum of pressure loss. Thumb operation of the push buttons in a pistol grip tool permits convenient one hand operation with simple molded mechanisms providing economy and ease of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.