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US 7,119,509 B1Granted
System and method for automatically requiring secondary safety sensors
AssigneeThe Chamberlain Group, Inc.
InventorsRobert Keller, Colin Willmott
Life of this patent
Estimating the term…
Abstract
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.
Claims19
A method of operating a moveable barrier operator comprising:
- identifying a force reversal value for an installed barrier;
- comparing the force reversal value to a predetermined threshold;
- when the comparing indicates that the force reversal value exceeds the predetermined threshold, halting an operation of the moveable barrier operator;
- installing a secondary safety device;
- responsive to the installing, reenabling the operator;
- and
- adjusting a speed of the operator when the comparing indicates that the force exceeds the threshold.
4 more elements
An operator comprising:
- a force measuring device;
- and
- a controller coupled to the force measuring device, the controller programmed to receive information indicative of an force applied to an object in a path of a moveable barrier from the force measuring device and to determine the force from the information, the controller being further programmed to make a comparison of the force to a predetermined threshold, and, when the comparison indicates that the force exceeds the threshold, to halt an operation of the operator until the controller determines that a secondary safety device has become connected to the operator.
A system for operating a moveable barrier comprising:
- at least one sensor for determining a speed of the barrier;
- a barrier;
- and
- a barrier operator coupled to the barrier and the at least one sensor, the barrier operator being programmed to receive the speed of the barrier and to convert the speed to a value representative of a force, the operator being further programmed to make a comparison of the value representative of the force to a predetermined threshold, and, when the comparison indicates that the value exceeds the threshold, to halt an operation of the operator until the operator detects that a secondary safety device has become connected to the operator.
1 more element
Dependencies are inferred from the claim text.