Electricity: motive power systems – Automatic and/or with time-delay means
Patent
1999-02-17
2000-10-17
Masih, Karen
Electricity: motive power systems
Automatic and/or with time-delay means
318480, 318450, 318460, 318467, 340555, 340356, G05B 500
Patent
active
06133703&
ABSTRACT:
An operator for opening and closing movable barriers such as garage doors comprising a pass-point limit system which is a component of an operating head. An operator for a rolling shutter or gate can be installed on either side of the opening. A dual pass-point system provides a unique pass-point regardless of direction of mounting the operator, regardless of the direction of travel for opening the barrier, and regardless of installation configuration, eliminating the need for the installer to know which direction the motor is rotating or the barrier is travelling. The operator automatically learns both the open and close limits, regardless of direction of travel and without having to press a learn switch to set the open and close limits.
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Fitzgibbon James
Lobbes Dan
Rathgeber Martin
Siegler Mark
Tam Ramon
Masih Karen
The Chamberlain Group, Inc.
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