Vented pneumatic foot controller
US4413214A · kind A · utility
5Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1981 |
| Grant date | Nov 1, 1983 |
| Priority date | — |
| Expiry date | Nov 12, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B7/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A speed controlling arrangement for an electric motor is provided with a pneumatic foot controller which includes a bulb that is opened to the atmosphere between operative periods to equalize pressure in both the bulb and a transducer, but is closed when foot pressure is applied to the bulb to actuate the transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.