Rotor for a sash balance brake and pivot pin assembly

Details Rotor for a sash balance brake and pivot pin assembly Rotor for a sash balance brake and pivot pin assembly

1997-07-11

1999-07-20

Stodola, Daniel P.

Movable or removable closures

Mounted for optional movements

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

49446, E05D 1522

Patent

active

059242434

ABSTRACT:
A sash balance brake and pivot pin assembly for a sash window that maintains the window substantially square prior to installation. The pivot pin extends outwardly from the window sash. The sash balance brake is disposed within a track in the window frame and includes a rotor rotatably disposed within an expandable housing. The pivot pin has a collar for lateral engagement with the rotor to prevent the window frame from bowing away from the window sash, thereby maintaining the window frame substantially square. The rotor has a first slot and a transversely disposed second slot defining an inner surface. The inner surface includes an angled surface to resist breakage of the rotor when the window sash in installed into the window frame. The rotor also has a pair of flats at a first end to further resist breakage of the rotor when the pivot pin is positioned at an angle with respect to the rotor.

REFERENCES:
patent: 3482354 (1969-12-01), Trout
patent: 4452012 (1984-06-01), Deal
patent: 4610108 (1986-09-01), Marshik
patent: 4718194 (1988-01-01), FitzGibbon et al.
patent: 4930254 (1990-06-01), Valentin
patent: 5127192 (1992-07-01), Cross
patent: 5237775 (1993-08-01), Hardy
patent: 5243783 (1993-09-01), Schmidt et al.
patent: 5353548 (1994-10-01), Westfall
patent: 5371971 (1994-12-01), Prete
patent: 5414960 (1995-05-01), O'Donnell
patent: 5632117 (1997-05-01), Prete et al.
patent: 5669180 (1997-09-01), Maier
patent: 5697188 (1997-12-01), Fullick et al.

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