Security bar system for louvered window units

Details Security bar system for louvered window units Security bar system for louvered window units

1983-06-02

1987-09-22

Kannan, Philip C.

Movable or removable closures

With protective grille or safety guard

49 51, 49 64, E06B 368

Patent

active

046946080

ABSTRACT:
An improved security bar system for louvered windows is disclosed. The window unit has louvered blades which pivot on horizontal stub shafts.The security bars are mounted on the stub shafts where the louver blades hide them from view and provide an esthetically pleasing window unit. Each security bar has a hardened steel rod with holes bored in each end for receiving the stub shafts and a hardened steel sleeve which freely rotates on the steel rod and covers the rod and stub shafts. The steel rod freely rotates on the stub shafts which are themselves freely rotatable. Therefore, any attempts to cut the security bar will cause the steel sleeve to rotate. Should the steel sleeve be held stationary and cut, the covered steel rod will rotate due to the action of the saw blade.

REFERENCES:
patent: 679028 (1901-07-01), Larmore
patent: 2125807 (1938-08-01), Petty
patent: 2761371 (1956-09-01), Parrish
patent: 3460289 (1969-08-01), Toth
patent: 4077167 (1978-03-01), Rieder
patent: 4395861 (1983-08-01), Fipke et al.

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