Patient Support Systems With Rotary Actuators Comprising Rotation Limiting Devices
AssigneeStryker Corporation
InventorsGary L. Bartley, Connor F. St. John
Life of this patent
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Abstract
A patient support system comprises a patient support apparatus for patients. The patient support apparatus comprises a base and a patient support surface supported by the base. The patient support apparatus also comprises movable members that are movable between at least a first position and a second position. One or more rotary actuators with rotation limiting devices are coupled to each movable member. The actuator with the rotation limiting device permits drive torque to move the movable member in a desired position between the first and second positions and restricts back drive torque from moving the movable member.
Claims25
A patient support apparatus comprising:
- a patient support surface;
- a first member and a movable member, said movable member movable relative to said first member;
- and
- an actuator comprising:
- a gear assembly having an input element, an output element connected to said movable member, and a gear arrangement operable between said input element and said output element;
- a motor configured to apply drive torque to said input element to rotate said output element through said gear arrangement;
- and
- a rotation limiting device coupled to said gear assembly to permit movement of said movable member through application of said drive torque and prevent back drive torque applied to said output element from moving said movable member in at least one direction.
Dependencies are inferred from the claim text.