Hatchway door for elevator system

Details Hatchway door for elevator system Hatchway door for elevator system

1986-12-01

1988-04-05

Rolla, Joseph J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 52R, 187 1R, 49120, 49309, 49310, B66B 1330, E06B 721, E06B 7215

Patent

active

047352930

ABSTRACT:
A hatchway door for an elevator system which includes a smoke seal. The smoke seal includes a compression seal along the trailing edge of each door panel which engages as the panel reaches the fully closed position, an astragal seal along the leading edge which engages another panel or a return, and sealing arrangements associated with the top and bottom portions of each door panel which seal the associated gaps with a spring loaded cam action which translates horizontal movement of the door panel to vertical movement of each sealing arrangement.

REFERENCES:
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patent: 1709595 (1929-04-01), Schweig
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patent: 3068936 (1962-12-01), Haws
patent: 3337995 (1967-08-01), Taylor
patent: 3523390 (1970-08-01), McAulay, Jr.
patent: 3734238 (1973-05-01), Secresty et al.
patent: 4045913 (1977-09-01), Wright
patent: 4058191 (1977-11-01), Balbo
patent: 4320793 (1982-03-01), Lindbergh

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