Automatic door control system
First Claim
1. A fluid powered door opening system for a door moveable between an open position and a closed position, the combination comprising:
- a mounting bracket for mounting in a fixed position adjacent a door;
a linear fluid motor pivotally mounted on said bracket;
an arm pivotally mounted on said bracket for extending parallel to the face of a door and connected to said fluid motor for unidirectional engagement with and application of force to the face of a door for moving the door in a direction away from said fluid motor to an open position;
a source of pressurized fluid for powering said motor; and
a control system for selectively communicating said pressurized fluid to said fluid motor for operation thereof for moving a door to the open position.
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0 Petitions
Accused Products
Abstract
An automatic door operating system includes a gas operated linear motor connected to operate a door by means of a unidirectional linkage system including an arm for unidirectional engagement of the door and a control system including a source of compressed gas for selectively opening the door and for controlling the duration of the door open position. The control system includes a variable timing release for variable timing of the duration of the valve opening. The actuator for the system can be remotely positioned for maintaining the door in open position for sufficient duration to permit passing therethrough. The linkage system permits the door to be manually operated totally independent of the operating system.
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Citations
14 Claims
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1. A fluid powered door opening system for a door moveable between an open position and a closed position, the combination comprising:
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a mounting bracket for mounting in a fixed position adjacent a door; a linear fluid motor pivotally mounted on said bracket; an arm pivotally mounted on said bracket for extending parallel to the face of a door and connected to said fluid motor for unidirectional engagement with and application of force to the face of a door for moving the door in a direction away from said fluid motor to an open position; a source of pressurized fluid for powering said motor; and a control system for selectively communicating said pressurized fluid to said fluid motor for operation thereof for moving a door to the open position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification