Device for assisting the opening of a door

Details Device for assisting the opening of a door Device for assisting the opening of a door

1974-03-14

1976-04-27

Downey, Kenneth

Movable or removable closures

Thermal releaser or actuator

Common fuse releases closures for plural openings

98 39, E05F 1520

Patent

active

039524523

ABSTRACT:
Apparatus for assisting the opening of a door when the door is subjected to added air pressure tending to hold the door closed, the apparatus including means operable when the pressure comes to be applied for urging the door toward opened position thus compensating or partially compensating for the effect of the added air pressure. Preferably, such means includes a weight and means which when actuated releases the weight to cause the weight to be applied to urge the door to an open position.

REFERENCES:
patent: 734598 (1903-07-01), Plucker
patent: 777648 (1904-12-01), Ballinger et al.
patent: 3337990 (1967-08-01), Iwata
patent: 3817161 (1974-06-01), Koplon

Affiliated with

Also associated with

Rating

Device for assisting the opening of a door does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for assisting the opening of a door, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for assisting the opening of a door will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1993032