Chain guide for overhead door opener

Details Chain guide for overhead door opener Chain guide for overhead door opener

1992-07-01

1993-01-05

Luebke, Renee S.

Machine element or mechanism

Mechanical movements

Oscillation or reciprocation to intermittent unidirectional...

49360, F16H 718

Patent

active

051765829

ABSTRACT:
A chain guide is provided for the otherwise unsupported upper run of the endless roller chain of a motor-driven garage door operator. With the chain loop in a vertical plane, the chain guide takes the form of a trough having at its bottom an upstanding central ridge which supports the chain by its rollers and with the links clear of contact with the floor and sides of the trough. The chain guide is supported indirectly by the trackage of the door operator, being mounted upon the fixed rail spacer of one form and carried upon the movable trolley of the other.

REFERENCES:
patent: 1043492 (1912-11-01), Werner
patent: 2822166 (1958-02-01), Herbert
patent: 3172651 (1965-03-01), Wilson
patent: 3448628 (1969-06-01), Shimano
patent: 3481074 (1969-12-01), Moss
patent: 3838606 (1974-10-01), Scalise
patent: 4082007 (1978-04-01), Strickland
patent: 4311225 (1982-01-01), Tsubaki et al.
patent: 4827668 (1989-05-01), Bechtold
patent: 4832664 (1989-05-01), Groger et al.
patent: 4879977 (1989-11-01), Restelli
patent: 4984387 (1991-01-01), Wheatland
patent: 5000724 (1991-03-01), Reid

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