Reset mechanism for stored energy emergency barriers
US9598900B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2014 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Dec 13, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C2/242
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A stored energy emergency barrier release device comprising a barrier and a barrel member for storing the barrier thereon. The barrel member is rotatable on a stationary counterbalance shaft and a push down shaft. The release device further includes a push down spring coupled to the push down shaft for storing potential energy in order to exert a closing force on the barrier when the release device is positioned from an engaged position to a released position. The release device includes a reset mechanism interfaced with the push down spring for transmitting a lifting torque to the push down spring in response to moving the barrier from a first position to a second position to store energy within the push down spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.