Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Reexamination Certificate
2006-09-19
2006-09-19
Martin, David (Department: 2837)
Electricity: motive power systems
Automatic and/or with time-delay means
Movement, position, or limit-of-travel
C318S068000, C318S468000, C318S447000, C318S484000, C160S029000, C049S026000, C049S027000, C049S028000, C297S330000, C297S331000
Reexamination Certificate
active
07109677
ABSTRACT:
A method for controlling a motorized barrier operator after detecting an obstruction includes the steps of providing a motorized barrier operator that moves a barrier between limit positions and providing at least one control switch that upon actuation moves the barrier in a direction toward one of the limit positions. Actuation of the at least one control switch during movement of the barriers at least causes the barrier to stop. If an obstruction is detected by the motorized barrier operator during movement of the barrier, the operator allows only uni-directional movement of the barrier, regardless of actuation of the at least one control switch, after the detecting step.
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Gagnon Richard E
Murray James S
Hiruy Elias
Martin David
Renner Kenner Greive Bobak Taylor & Weber
Wayne-Dalton Corp.
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