Counterbalanced flex window

Details Counterbalanced flex window Counterbalanced flex window

1993-08-09

1994-11-15

Purol, David M.

Flexible or portable closure, partition, or panel

Plural and/or with rigid closure

Diverse types

160191, 160207, E06B 332

Patent

active

053638980

ABSTRACT:
A counterbalanced flex window wherein the sashes thereof, being joined together by a hinge, flex and fold toward each other when the window is released for opening and thereafter automatically maintain randomly adjusted open positions without the need for supplemental manually engaged incremental adjustment latch devices.

REFERENCES:
patent: 2330696 (1943-09-01), Exiner
patent: 2408739 (1946-10-01), Dawes
patent: 2771133 (1956-11-01), Haskell
patent: 4039018 (1977-08-01), De Maria
patent: 4227345 (1980-10-01), Durham
patent: 4683676 (1987-08-01), Sterner
patent: 4935987 (1990-06-01), Sterner

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