Implements or apparatus for applying pushing or pulling force – Single throw lever – Adjustable
Patent
1993-03-30
1994-11-01
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Single throw lever
Adjustable
254131, B66F 300
Patent
active
053601998
ABSTRACT:
Bar apparatus for removing a grille from a building opening either by pulling the grille away from the opening or pushing it toward the opening. The bar apparatus includes an elongated steel bar, a heel plate formed with a convex surface with a tubular socket for receiving the end of the bar, and a chain having a length sufficient to be wrapped around a grille bar and having its ends connected to the heel structure about 6 inches from the end of the bar. The user can then mount the heel structure on the building frame, wrap the chain around the grille, and then, by pivoting the grille bar about the heel structure, apply sufficient leverage so as to produce relative motion between the grille bar and the frame in which it is mounted.
REFERENCES:
patent: 1096378 (1914-05-01), Lawrence
patent: 2162668 (1939-06-01), Stocker
patent: 2539231 (1951-01-01), Davis
patent: 2769236 (1956-11-01), Phillips et al.
patent: 2793424 (1957-05-01), Witte
patent: 2832628 (1958-04-01), Turnbull
patent: 4991893 (1991-02-01), Gordon et al.
patent: 5165661 (1992-11-01), Wright
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