Door with fluid actuator door opening and closing mechanism

Details Door with fluid actuator door opening and closing mechanism Door with fluid actuator door opening and closing mechanism

1992-05-04

1993-12-14

Cuomo, Peter M.

Movable or removable closures

With operator for movably mounted closure

Operator drives closure along guide

E05F 1100

Patent

active

052690989

ABSTRACT:
A door is supported for shifting between first and second positions, respectively opening and closing a doorway. A fluid actuator, such as a pneumatic cylinder, is used to shift the door between such positions. The fluid actuator reduces the velocity of the door as the door approaches at least one of the open and closed positions. In the case of a pneumatic cylinder, both sides of the cylinder may be subjected to relatively high air pressure when the door is stationary. To reduce the velocity of the door as it approaches the open or closed position, the rate of bleeding of air from one side of the cylinder is reduced.

REFERENCES:
patent: 1431413 (1922-10-01), Myers
patent: 3231259 (1966-01-01), Bobrowski et al.
patent: 3864875 (1975-01-01), Hewitt
patent: 3921335 (1975-01-01), Hewitt et al.
patent: 3938282 (1976-01-01), Goyal
patent: 4476678 (1984-10-01), Hall
patent: 4918864 (1990-04-01), Lunenschloss et al.
AirGlide.TM. 81 Series mechanical drawing and schematic drawing by AirTeq.

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