Disengageable rolling door drive
US6305457A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2000 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Mar 1, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/70
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rolling door drive assembly including a final drive unit for connection to a door, whereby the door may be rotated by the final drive unit about an axis to open and close the door, a motor, a drive between the final drive unit and the motor operatively engaged with the motor, one or more drive axes about which one or more components of the drive rotate to transfer drive from the motor to the final drive unit, an actuator to bring the drive to a first configuration at which the motor is engaged to drive the final drive unit through the drive and to bring the drive to a second configuration at which the motor is disengaged from driving the final drive unit, and a resilient spring for urging the drive into one of the configurations. The actuator includes a cam rotatable about a cam axis separate from the one or more drive axes. The cam acts to set the desired configuration of the drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.