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US 2018/0000673 A1Published application
Patient Support Systems With Rotary Actuators
AssigneeStryker Corporation
InventorGary L. Bartley
Life of this patent
Estimating the term…
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 are coupled to each movable member. The rotary actuator 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 coupled to said movable member to move said movable member relative to said first member, said actuator comprising:
- a gear assembly having an input member, an output member connected to said movable member, and a gear arrangement operable between said input member and said output member;
- and
- a motor configured to apply torque to said input member to rotate said output member through said gear arrangement,
- said gear assembly having a forward drive efficiency and a back drive efficiency, wherein said forward drive efficiency is greater than said back drive efficiency.
5 more elements
Dependencies are inferred from the claim text.