Pneumatic door operator

Details Pneumatic door operator Pneumatic door operator

E - Fixed Constructions

05

F

268/23

E05F 15/00 (2006.01) E05F 15/08 (2006.01) F15B 15/08 (2006.01)

Patent

CA 1327056

PNEUMATIC DOOR OPERATOR Abstract of the Disclosure An operator system for a counterbalanced door includes a rodless fluid cylinder that has a cylinder body and a rodless piston adapted for reciprocation in the cylinder body. A carriage which is adapted for reciprocation externally along the length of the cylinder body is secured to the piston. A link member connects the cylinder carriage to a door or to a torsion bar for the door. A control circuit is provided for controlling the operation of the fluid cylinder and hence the position of the door.

603983

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