Automatic door/window operator

Details Automatic door/window operator Automatic door/window operator

1996-06-03

1998-08-11

Brown, Peter R.

Movable or removable closures

With operator for movably mounted closure

Operator drives closure along guide

E05F 1100

Patent

active

057910871

ABSTRACT:
A sliding member operating system is disclosed which includes a adjustable pressure regulator (18)fluid control valves (15), (40), (50), (30), (80), (20), and (70) and an operating cylinder (60) which is mounted to the sliding element of a door or window (66) and its adjacent frame (62) for the purpose of opening and closing and holding said sliding element. This system utilizes the fluid being exhausted from cylinder (60) during the closing cycle to hold open valve (30) insuring that a door or window in motion will continue to stay in motion but that the power being supplied to a moving door or window, once halted by any means, will cease. An additional series of valves is utilized to pressurize cylinder 60 for the purpose of holding a door or window in the closed position. The rate of fluid bleed at valve 50 is adjustable to control closing speed and the sensitivity at which the sliding element will stop if an object is encountered during the closing cycle or if the door/window closes completely.

REFERENCES:
patent: 2891567 (1959-06-01), Pottmeyer
patent: 3755967 (1973-09-01), Nourse
patent: 4170845 (1979-10-01), Owen
patent: 4296570 (1981-10-01), Balbach et al.
patent: 4941320 (1990-07-01), Kersten et al.
patent: 5269098 (1993-12-01), Redman
patent: 5410842 (1995-05-01), Watson

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