Device for actuating a tip-up or sectional door

Details Device for actuating a tip-up or sectional door Device for actuating a tip-up or sectional door

1987-02-02

1989-05-02

Dorner, Kenneth J.

Movable or removable closures

Up-and-over type; e.g., moves from vertical to withdrawn...

With operator

160188, 16 94R, 248 73, 24823191, 403352, E05F 1500

Patent

active

048255939

ABSTRACT:
This device for actuating a tip-up or sectional door comprises an elongated frame structure supporting a linearly movable member driven through a worm screw or a chain connected to the door to be driven, and secured at two upper points of which one is located at one end of the frame structure. This one end is secured to a fixed support formed with a vertical notch of which the bottom edge has a groove formed therein, the upper edge of this notch being limited by a surface located at a predetermined distance from the groove bottom. The frame structure comprises a support surface, for example in the form of a pin, and a locking surface, for example in the form of another pin, located at a distance from the first pin which corresponds to the predetermined distance. This frame structure can be fitted by a single person by anchoring the lower pin of the support and then raising the frame structure to a substantially horizontal position, so as to lock automatically the device in its operative position.

REFERENCES:
patent: 1229874 (1917-06-01), Boye
patent: 3204170 (1965-08-01), Monks
patent: 4018005 (1977-04-01), Harris
patent: 4231191 (1980-11-01), Ellmore
patent: 4311225 (1982-01-01), Tsubaki et al.

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