Locks – Special application – For closures
Patent
1977-08-11
1978-10-03
Bonck, Rodney H.
Locks
Special application
For closures
70283, 70DIG10, 70DIG46, 292DIG66, E05B 4706
Patent
active
041177010
ABSTRACT:
This invention relates to a locking device having a latching element movable between a locking position and an inoperative position, operating means for moving the latching element, a blocking member movable to a blocking position for mechanically preventing the latching element from moving to its inoperative position. According to the invention, a plurality of thermally responsive elements are arranged or are individually bendable to form thermally responsive holding means for adopting a holding condition to temporarily hold the blocking member in the blocking position and, preferably, also to form thermally responsive safety means for normally adopting an inoperative condition. Thermo-electric means are associated with the thermally responsive means for individually and selectively heating the thermally responsive means to move the thermally responsive holding means from the holding condition thereby permitting the blocking member to move from the blocking position and for moving the thermally responsive safety means to a holding condition for holding the blocking member in the blocking position. Thus, the blocking member is permitted to move from said blocking position only on correctly energizing said thermo-electric means. Actuating means are provided for enabling said thermo-electric means to be selectively energized.
REFERENCES:
patent: 1855089 (1932-04-01), Boothe
patent: 1876894 (1932-09-01), Fitz Gerald
patent: 2209574 (1940-07-01), Marsh
patent: 3781857 (1973-12-01), Stendig et al.
patent: 4032180 (1977-06-01), Pohl
LandOfFree
Electro-thermal lock does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electro-thermal lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electro-thermal lock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1795991