Rotation sensor of a swash-plate type compressor
US4355959A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1980 |
| Grant date | Oct 26, 1982 |
| Priority date | — |
| Expiry date | Oct 8, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2201/1206
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotation sensor for sensing a swash-plate type compressor being in rotational state. An electromagnetic sensor including a permanent magnet and a coil disposed in the neighborhood thereof is fixed on a housing of the compressor such that it may be opposed to a part of a rotational locus described by a specific portion of the external periphery of the swash-plate. The electromagnetic sensor generates a signal pulse everytime the specific portion passes nearby. When the swash-plate is made of a non-magnetic material some magnetic body is fixed on the external periphery of the swash-plate for constituting a portion-to-be-sensed. This magnetic body may be a ring or lump of ferrous material, a temperature sensitive ferrite, a permanent magnet, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.