Structural lock for tilting-type double hung windows

Details Structural lock for tilting-type double hung windows Structural lock for tilting-type double hung windows

1995-10-31

1997-06-10

Milano, Michael J.

Movable or removable closures

Mounted for optional movements

Pivot mounted on sliding member; e.g., slide-stile

49184, E05D 1522

Patent

active

056364750

ABSTRACT:
A lock mechanism for a tilting-type double hung window which is automatically brought into engagement when the window sash is in the closed position and disengagement when the window sash is opened. The locking mechanism prevents pivoting of the window sash when the window sash is in the closed position.

REFERENCES:
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patent: 2078506 (1937-04-01), Nuebel
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patent: 2714033 (1955-07-01), Lewgowd
patent: 2731684 (1956-01-01), Ruchin
patent: 2931676 (1960-04-01), Wroughton
patent: 3399490 (1968-09-01), Hettinger
patent: 3445964 (1969-05-01), Foster
patent: 4521991 (1985-06-01), Sayer et al.
patent: 4525952 (1985-07-01), Cunningham et al.
patent: 4624073 (1986-11-01), Randall
patent: 4961286 (1990-10-01), Bezubic
patent: 5165737 (1992-11-01), Riegelman

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