Supports – Stand – Standard type
Patent
1987-07-20
1988-10-18
Foss, J. Franklin
Supports
Stand
Standard type
248161, F16M 1300
Patent
active
047781378
ABSTRACT:
A lift base for raising and lowering objects such as an ophthalmological chair comprises a piston rotatably and axially movable within a cylinder and connected to a base support which mounts the chair or other object. A sleeve keyed to the cylinder is movable axially relative thereto but locked against rotation. A locking assembly carried by the support is effective to move the sleeve between an unlocked position out of contact with the sleeve wherein both axial and rotational movement of the base support and piston is permitted, and a locked position into contact with the sleeve wherein rotational movement of the piston and base support is prevented but axial movement thereof is permitted.
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F & F Koenigkramer, Inc.
Foss J. Franklin
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