Door lock actuator
US6067826A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1999 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Jun 11, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door lock actuator including a single non-reversible drive motor for generating step-wise rotation of an output shaft through an indexing assembly which is decoupled from the motor during periods of operation. The indexing assembly includes an index pin plate coupled to a drive gear for rotation therewith. The plate includes a plurality of spaced pins which are positioned to contact a rotating paddle driven by the drive motor. The paddle successively contacts the pins in a portion of its rotation to cause corresponding rotation of the drive gear and the output gear which is meshingly engaged therewith. The output gear is coupled to an output shaft having twin cams positioned thereon for manipulating door latch pawls to control the door lock state. An override mechanism is provided which includes top and bottom override arms driven by rotation of a key in the key cylinder. The top override arm can be activated to place the output cams in a "double unlock" condition, while the bottom override arm can be activated to place the output cams in a "double lock" position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.