Door and door hanger device at elevator landing

Details Door and door hanger device at elevator landing Door and door hanger device at elevator landing

2006-01-24

2006-01-24

Canfield, Robert (Department: 3635)

Elevator, industrial lift truck, or stationary lift for vehicle

With barrier for regulating access to load support

C187S314000, C052S001000, C052S030000, C052S232000, C052S784110, C052S784100

Reexamination Certificate

active

06988592

ABSTRACT:
A door panel includes a surface board facing a hoistway, a back board facing a hoistway, and a reinforcing member for reinforcing the surface board and the back board. The back board is connected to the surface board or the reinforcing member by a connecting member which is capable of losing the force of constraint against the surface board or the reinforcing member on high temperature conditions during a fire. This connecting member prevents the door panel of the elevator hall door from being deformed during a building fire, and prevents the elevator hall door from falling, thus preventing smoke and flame from entering the hoistway.

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