Movable or removable closures – With operator for movably mounted closure – Closure-mounted drive
Patent
1977-06-01
1979-07-31
Kannan, Philip C.
Movable or removable closures
With operator for movably mounted closure
Closure-mounted drive
49360, 49449, 109 59R, 109 73, 292112, 292199, E05F 1100
Patent
active
041625927
ABSTRACT:
A sliding door is provided which is suitable for use as a heavy door for vaults in banks. The door is provided at its bottom with driving wheels adapted to be rotated manually by means of a handle, through a suitable power transmitting means, thereby to move the door along a rail. The power transmitting means may incorporate a suitable reduction means so that the door may be moved with a reduced force and, accordingly, at a lower speed. Means are provided for locking the door in the closed state.
REFERENCES:
patent: 1083438 (1914-01-01), Dohse
patent: 1090305 (1914-03-01), Hoffman
patent: 1210103 (1916-12-01), Ritter
patent: 1646181 (1927-10-01), Babekuhl
patent: 1816134 (1931-07-01), Wood
patent: 2488063 (1949-11-01), Massie
patent: 2714472 (1955-08-01), Richardson
Kannan Philip C.
Kongo Co. Ltd.
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