Helical fluid-actuated torsional motor

Details Helical fluid-actuated torsional motor Helical fluid-actuated torsional motor

1990-05-25

1991-05-28

Look, Edward K.

Surgery

Truss

Perineal

92 48, 92 61, 92 92, 92117R, 92118, 92 94, A61B 100, F01B 1900, F16J 300

Patent

active

050191217

ABSTRACT:
A hydraulically or pneumatically actuated fluid-dynamic motor has an elongated elastomeric bladder, a braid disposed over the bladder, and a flexible but substantially incompressible spine disposed between the braid and the bladder. The muscle or motor is configured in a helix with the spine arranged on the inside of the helix. Application of fluid under pressure to the bladder causes one end of the helical motor to untwist or rotate relative to the other end. Upon deflation of the bladder, the spine causes the bladder to deflate and rotate the other end in the opposite direction. This fluid dynamic motor provides an azimuthal motion that can be employed for the steering section of an elongated flexible probe, such as a borescope or endoscope.

REFERENCES:
patent: 2386610 (1945-10-01), Hunter
patent: 3066853 (1962-12-01), Landenberger
patent: 3276477 (1966-10-01), Bleasdale
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patent: 3490733 (1970-01-01), Berthaud
patent: 3924519 (1975-12-01), England
patent: 4108050 (1978-08-01), Paynter
patent: 4616556 (1986-10-01), Meilman et al.
patent: 4792173 (1988-12-01), Wilson
patent: 4794912 (1989-01-01), Lia
IBM Technical Disclosure Bulletin vol. 8, No. 6, 11/65, 1 Sheet.

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