Linear fluid power actuator assembly
US5240042A · kind A · utility
Inventor
Key dates
| Filing date | Oct 1, 1992 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Oct 1, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8663
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control logic circuitry comprising a toggle type fluid actuated pilot control valve which is activated by a fluid pressure signal pulse to shift between a first and second state to deliver a control signal to a main power control valve. The pilot control valve and associated circuitry includes the capability to maintain itself in either one of the shifted states after termination of the pressure signal pulse until actuated to the other state by another pressure signal pulse. The pilot control valve is described in connection with controlling the functions associated with a linear fluid power piston including switching a main power valve to reverse the piston stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.