Automatic door control system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 28, 1982
Issued Date -
N/A
app pub date -
Sep 24, 1980
filing date -
Jul 17, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
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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Family
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