Climate control system and motor actuator therefor
US6844692B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 22, 2003 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Aug 22, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/64
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A motor actuator (52) of a climate control system (37) includes an specialized electric motor (62) with a motor housing enclosing an encoder ring (104) on a motor shaft (77) having a plurality of opposite encoder-segment sets with encoder brushes (96a-b) on the housing wiping the encoder ring and thereby forming an encoder circuit through opposite segments of the encoder-segment sets. The electric motor further includes power and encoder terminals (98a-b and 100a-b) positioned externally of the motor housing with at least one power terminal being electrically coupled to one of the power brushes and at least one encoder terminal being electrically coupled to one of the encoder brushes. A control head (58) of the system includes a continuity pulse counter (72) coupled to the at least one encoder terminal for creating pulses representative of impedance in the encoder circuit and, therefore, movement of the motor shaft and a damper (40) linked thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.