Electronic motorized zone valve
US6186471A · kind A · utility
26Cited by
38References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 1998 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | May 15, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0318
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An valve actuator in a hydronic heating and cooling system includes a motor for changing the position of a valve, a switch for switching power to the motor, and a sensor for detecting the arrival of the valve at a desired position and for stopping the motor without using a mechanical stop. The motor's power source includes a capacitive power source which can be used to drive the motor under low-power conditions. A worm gear is used in the drive train, and combined with a clutch assembly to permit the valve to be operated manually.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.