Door lifter

Details Door lifter Door lifter

1998-10-08

2000-07-18

Redman, Jerry

Movable or removable closures

Up-and-over type; e.g., moves from vertical to withdrawn...

With operator

160191, E05F 1100

Patent

active

060889640

ABSTRACT:
A device for opening or lifting a door (22) that hangs down by a hinge (23) with a horizontal swivel axis is characterized by an elbow lever mechanism, which is operated by means of a spring element (21) and which can additionally be folded down in the area of its dead point when the door (22) is still hanging or which is at its maximum force transfer when the door (22) is swivelled up. The door should preferably also be able to be folded down.

REFERENCES:
patent: 2024724 (1935-12-01), Eager et al.
patent: 3429072 (1969-02-01), Sammons
patent: 3552475 (1971-01-01), Fehr
patent: 3902220 (1975-09-01), Little
patent: 4018005 (1977-04-01), Harrip
patent: 4516813 (1985-05-01), Sekerich
patent: 4658473 (1987-04-01), Schema

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