Governor sheave with an overlapping flyweight system
AssigneeOtis Elevatory Company
InventorsJose Miguel Aguado, Luis Marti, Jose Luis Vergara
Life of this patent
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Abstract
A mechanism for use in an elevator governor assembly including a ground configured to rotate about a ground axis, three or more circumferentially overlapping cams each pivotally attached to the ground at one of three or more ground pivot points radially spaced from the ground axis, and a plurality of links pivotally attaching the three or more cams to one another at a plurality of link pivot points. The circumferentially overlapping cams form a substantially contiguous circular ring about the ground axis. The interconnection of the ground, the cams, and the links form a generally circular mechanism.
Claims23
A mechanism for use in an elevator governor assembly, the mechanism comprising:
- a ground configured to rotate about a ground axis of rotation;
- three or more circumferentially overlapping cams each pivotally attached to the ground at one of three or more ground pivot points radially spaced from the ground axis of rotation to form a substantially contiguous circular ring about the ground axis of rotation;
- and
- a plurality of links pivotally attaching the three or more cams to one another at a plurality of link pivot points to form a generally circular mechanism.
An elevator governor assembly comprising:
- a sheave that is configured to rotate about a sheave axis of rotation at a velocity related to a velocity of an elevator car;
- three circumferentially overlapping masses each pivotally attached to the sheave at one of three mass pivot points radially spaced from the sheave axis of rotation to form a substantially contiguous circular ring about the sheave axis of rotation;
- and
- a plurality of links pivotally attaching the three masses to one another at a plurality of link pivot points to form a generally circular mechanism.
An elevator governor assembly comprising:
- a sheave that is configured to rotate about a sheave axis of rotation at a velocity related to a velocity of an elevator car;
- and
- three masses each pivotally attached to the sheave at one of three mass pivot points radially spaced from the sheave axis of rotation;
- wherein the three masses are pivotally attached to one another by links at a plurality of link pivot points to form a substantially contiguous circular mechanism configured to increase in diameter about the sheave axis of rotation as a function of angular velocity.
An elevator governor assembly comprising:
- a sheave that is configured to rotate about a sheave axis of rotation at a velocity related to a velocity of an elevator car;
- three circumferentially overlapping masses each pivotally attached to the sheave at one of three mass pivot points radially spaced from the sheave axis of rotation to form a substantially contiguous circular ring about the sheave axis of rotation;
- a plurality of links pivotally attaching the three masses to one another at a plurality of link pivot points to form a generally circular mechanism configured to increase in diameter about the sheave axis of rotation as a function of angular velocity;
- and
- a coupler configured to inhibit the generally circular mechanism from increasing in diameter about the sheave axis of rotation at sheave angular velocities less than a first velocity and to permit the generally circular mechanism to increase in diameter about the sheave axis of rotation as a function of angular velocity at velocities greater than or equal to the first velocity.
Dependencies are inferred from the claim text.