Fluid operated actuator with recessed position sensor and recessed end cap fastener
US4982652A · kind A · utility
Inventor
Key dates
| Filing date | May 19, 1989 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | May 19, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/2815
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid operated actuator includes a housing having a longitudinally extending aperture with open ends. First and second end caps are attached to opposite ends of the housing forming a chamber within the housing. A longitudinally reciprocal piston and attached rod are disposed within the chamber with the rod extending externally of the chamber through one of the end caps. The piston is adapted for reciprocal movement from one end limit of travel adjacent the first end cap to a second end limit of travel adjacent the second end cap. At least one of the first and second end caps includes a longitudinal aperture in communication with the chamber and a transverse aperture communicating between the longitudinal aperture and an exterior of the end cap. A sleeve is connected to the rod adjacent the piston and is engageable within the longitudinal aperture of the end cap when the piston is in the end limit of travel. A sensor is sealingly engaged within the transverse aperture of the end cap for sensing the piston in the end limit of travel. A retaining ring secures the sensor within the transverse aperture, while allowing pull-out removal of the sensor when the retaining ring is removed. …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.