Elevator governor device
AssigneeOtis Elevator Company
InventorsAndres Monzon Simon, Fernando Del Rio Sanz
Life of this patent
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Abstract
An elevator governor includes a selectively powered switch (60) that is activated when an elevator car moves at a speed that exceeds a selected limit. The speed limit is lower than normally expected car speeds during normal elevator operation. The switch (60) is activated by a moving member (66) that moves into a switch-activation position responsive to movement of a rotating member (36) that corresponds to movement of an elevator car. The arrangement allows for a primary governor to prevent elevator speeds from exceeding a first selected limit and a secondary governor to prevent elevator speeds from exceeding a second, lower limit.
Claims17
A governor device for use in an elevator system, comprising:
- a rotating member that rotates responsive to movement of an elevator car;
- a selectively powered switch near the rotating member;
- and
- a moving member that is biased into a position to not activate the switch, the moving member moving into a position to activate the switch responsive to the rotating member rotating at a speed beyond a selected limit that corresponds to movement of the elevator car at a speed below a desired speed during normal elevator system operation, the switch only being powered to operate under selected conditions other than normal elevator system operation.
Dependencies are inferred from the claim text.