Cam actuated valve
US5899437A · kind A · utility
12Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Dec 12, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/52491
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A cam actuated valve method and apparatus utilize an electronically controlled stepper motor driving a cam. A diaphragm type low flow, high accuracy diaphragm valve is positioned off axis with respect to the cam. A transmission translates linear motion of the cam to the valve diaphragm. High accuracy is maintained because the transmission is preloaded by pressure within the valve and the valve diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.