Rotary solenoid actuator
US4496134A · kind A · utility
12Cited by
9References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 27, 1981 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Aug 27, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/0682
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rotary solenoid actuator for proportionally controlling the flow of fluid, such as air, in a pipe comprises a housing with a rotor rotatably mounted thereon. A stationary coreless coil for generating a magnetic field in response to a control current therethrough is mounted in the housing. A permanent magnet is affixed to a rotatably mounted shaft within the coil, and a return spring is attached to the rotating shaft. Due to low hysteresis in the coreless coil, there is a linear relationship between the control current and the fluid flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.