Proximity switch for fluid cylinders
US4071725A · kind A · utility
15Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1976 |
| Grant date | Jan 31, 1978 |
| Priority date | — |
| Expiry date | Feb 27, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H36/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The specification discloses a magnetic proximity sensing apparatus especially adapted for use with fluid cylinders having pistons formed from magnetically attractable material. The apparatus includes clamping means for securing it to a tie rod of a fluid cylinder or directly to the cylinder body in juxtaposition to a side of the cylinder without disassembly of the cylinder. Also included are magnetic actuator means responsive to the proximity of the fluid cylinder piston which close a switch and enable electrical circuitry for controlling fluid valves or other apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.