Patent ID: 11920375
Assignee: SCHLAGE LOCK COMPANY LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. An apparatus, comprising:
a modular, self-contained spring cage comprising a housing and a clock spring mounted in the housing, wherein the clock spring comprises a first leg and a second leg; and
a spindle extending through the modular, self-contained spring cage, wherein the spindle is rotatable from a home position about a longitudinal axis in each of a first rotational direction and a second rotational direction opposite the first rotational direction;
wherein rotation of the spindle from the home position in the first rotational direction causes pivoting of the first leg while the second leg remains stationary, thereby deforming the clock spring such that the clock spring exerts a first biasing force urging the spindle to return to the home position;
wherein rotation of the spindle from the home position in the second rotational direction causes pivoting of the second leg while the first leg remains stationary, thereby deforming the clock spring such that the clock spring exerts a second biasing force urging the spindle to return to the home position; and
wherein the clock spring further comprises a spiral-wound body portion that is wound in a spiral about the longitudinal axis.