Elevator overspeed governor with automatic reset
AssigneeOtis Elevator Company
InventorsRandall S. Dube, Aayush Desai
Life of this patent
Estimating the term…
Abstract
A governor assembly is provided including a sheave rotatably mounted on a shaft and a ratchet disc mounted on the shaft. Rotation of the ratchet disc is restricted. An overspeed assembly includes a swing jaw mounted to the sheave. The swing jaw is movable between a normal position and a tripped position. The swing jaw is biased into the tripped position. When the swing jaw is in the tripped position, rotation of the sheave in a first direction is restricted. A tripping lever is pivotally mounted to the sheave and is configured to cooperate with the swing jaw. Rotation of the sheave in a second, opposite direction is configured to automatically move the swing jaw against its bias to the normal position.
Claims14
A governor assembly, comprising:
- a sheave rotatably mounted on a shaft;
- a flyweight mounted to the sheave, the flyweight being movable between a retracted position and an extended position in response to an overspeed condition of the sheave;
- and
- an overspeed assembly including:
- a swing jaw mounted to the sheave movable between a normal position and a tripped position, the swing jaw being biased into the tripped position;
- and
- a tripping lever pivotally mounted to the sheave and configured to cooperate with the swing jaw, wherein the tripping lever is coupled to the flyweight and in response to movement of the flyweight from the retracted position to the extended position, the swing jaw is transformed to the tripped position;
- wherein when the swing jaw is in the tripped position, rotation of the sheave in a first direction is restricted, and rotation of the sheave in a second, opposite direction is configured to automatically move the swing jaw against its bias from the tripped position to the normal position.
Dependencies are inferred from the claim text.