Patent ID: 9655793
Date: 2017-05-23
CPC Classifications: A61G,B60B

Claim:
1. A patient support apparatus comprising: a caster including a stem, a wheel coupled to the stem to rotate about a wheel axis relative to the stem, and a braking element movable from a disengaged position allowing rotation of the wheel relative to the stem to an engaged position blocking the wheel from rotation relative to the stem, a brake drive including a mount and a linear actuator coupled to the mount, the linear actuator configured to move from a retracted position to an extended position relative to the mount, and a linkage including a shaft coupled to the braking element to move the braking element between the disengaged and the engaged positions and coupled to the linear actuator to be moved by the linear actuator relative to the mount, a release assembly coupled between the shaft and the linear actuator to selectively engage the shaft with the linear actuator, a disengaging-bias spring coupled to the shaft to move the shaft so that the braking element is moved from the engaged position to the disengaged position when the shaft is disengaged from the linear actuator, and a locator spring coupled to the shaft to resist the disengaging-bias spring so that the shaft moves to a preselected position when disengaged from the linear actuator.