Operator governor release for fire shutters
US12297696B2 · kind B2 · utility
0Cited by
47References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2021 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Dec 20, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/807
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In example implementations, an adjustable speed operator governor release for a rolling fire shutter is provided. The adjustable speed operator governor release includes a shaft coupled to the rolling fire shutter, a gear on a first end of the shaft to engage a spring-loaded clutch during a fire, wherein the spring-loaded clutch is moved to disengage from a drive assembly and to engage the gear of the adjustable speed governor to operate the rolling fire shutter, and a linear speed adjusting mechanism coupled to the shaft and the gear to control a speed of free fall of the rolling fire shutter during the fire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.