Door assembly

Details Door assembly Door assembly

1983-09-23

1984-10-09

Kannan, Philip C.

Movable or removable closures

With operator for movably mounted closure

Operator drives closure along guide

49409, E05F 1100

Patent

active

044753128

ABSTRACT:
A guide structure for a door assembly of the type including a door member, an endless chain member coupled to the door, and a drive mechanism for drawing the chain member to cause the door member to move between opened and closed positions. The guide structure includes an elongated metal body for receiving the span portions of the chain member, and plastic guide members positioned within the body for guidingly engaging the chain member to assure a smooth, quiet operation of the door assembly with no metal-to-metal contact.

REFERENCES:
patent: 1532171 (1925-04-01), Burmeister
patent: 3608612 (1971-09-01), Pemberton et al.
patent: 3802125 (1974-04-01), Baker
patent: 4231191 (1980-11-01), Ellmore
patent: 4296570 (1981-10-01), Balbach et al.

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