Emergency release system for door lock
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 5, 2005
Grant Date -
Jul 17, 2003
app pub date -
Jan 3, 2003
filing date -
Jan 8, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An emergency release for a door lock that is to be mounted to a door includes a lock unit having handles and a lock, one of the handles being associated with the lock and the other not associated therewith, a latch unit having a latching bolt, wherein the lock, when set, prevents retraction of the latching bolt by rotation of the handle associated with the lock, but does not prevent the retraction by rotation of the other handle, a linking unit having latch retraction means and a holding element, and a sensor unit having a sensor door. The sensor door is opened in response to a predetermined pressure change across the door on which the door lock is mounted and is connected to the holding element so that the holding element actuates latch retraction when the sensor door is opened for retracting the bolt independently of the lock unit.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully