E - Fixed Constructions – 05 – F
Patent
E - Fixed Constructions
05
F
E05F 15/20 (2006.01) E01F 13/04 (2006.01)
Patent
CA 2548880
A force reversal value for an installed barrier is identified. The force reversal value is compared to a predetermined threshold. When the comparing indicates that the force reversal value exceeds the predetermined threshold, the operation of the moveable barrier operator is halted. A secondary safety device can then be installed and, responsive to the installing, the operator can be reenabled.
Keller Robert
Willmott Colin
Macrae & Co.
The Chamberlain Group Inc.
LandOfFree
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