Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Reexamination Certificate
2006-10-03
2006-10-03
Duda, Rina (Department: 2837)
Electricity: motive power systems
Automatic and/or with time-delay means
Movement, position, or limit-of-travel
C318S280000, C318S283000, C318S432000, C318S433000, C318S434000, C318S443000, C318S444000, C318S445000, C318S469000
Reexamination Certificate
active
07116072
ABSTRACT:
A method and system for setting a downward force adjustment exerted by a barrier is disclosed. As is known, the barrier operator initiates corrective action if a detected obstruction force is deemed excessive. The inventive method and system comprises pre-setting a force threshold value used by the barrier operator. While in a programming mode, the barrier is moved from one limit position to another limit position. A recorded value is determined during the moving of the barrier and the threshold value is adjusted until equal the recorded value. A feedback device such as a light or a speaker is used to indicate when the threshold value is at least equal the recorded value.
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Gagnon Richard E
Murray James S
Duda Rina
Glass Erick
Renner Kenner Greive Bobak Taylor & Weber
Wayne-Dalton Corp.
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