Air valve actuator for reciprocable machine
US5280808A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1993 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Apr 21, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86847
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air control valve for directing air flow in a double-acting reciprocable motor, where the valve has a first link which is pivotally connected at one end to the motor and mechanically coupled along its length to a reciprocable motor member; a second link pivotally connected to the same point as the first link, and having an over-center spring detent mechanism to position it in either of two pivot positions; both of the links having alignable transverse slots, with a compression coil spring engaged in both slots; and a slide valve member attached to the second link and pivotally movable therewith, to direct the air flow into either of the double-acting motor drive members, the air valve toggling to its second position near the end of the motor drive stroke to cause the motor to reciprocate in the other direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.