Expansible chamber devices – Rectilinearly moving working member and coaxial or parallel... – Element extends through working member portion
Patent
1983-09-09
1985-04-02
Garrett, Robert E.
Expansible chamber devices
Rectilinearly moving working member and coaxial or parallel...
Element extends through working member portion
92113, 92116, 92136, 92161, F01B 308
Patent
active
045080160
ABSTRACT:
A fluid-powered, rotary actuated support, including an elongated cylindrical body having ports for introducing pressurized fluid therein; a platform concentric with the cylindrical body and rotatable relative thereto; a radially extending bearing support joined to the cylindrical body and confronting the platform; bearings disposed between the bearing support and the platform for allowing relative rotational movement between the platform and the bearing support, with one of the platform or bearing support being subjected to bending loads disposed in a generally vertical plane from the weight of a crane or other device and its load; a longitudinally splined output shaft rotatably disposed within the body and having a drive end for providing rotational drive between the body and the platform, the splines being loosely fitted to the platform for substantially isolating the shaft from non-rotational movement of the platform, the shaft being bearingless and radially floating within the body for transferring rotational torque between the body and the platform without causing bending of the output shaft under the bending loads of the crane or other device, the drive end of the shaft being radially movable under the bending loads; and a linear-to-rotary actuator disposed within the body and operable to provide relative rotational movement between the body and the output shaft, the actuator being operable while the output shaft drive end is being subjected to radial movement.
REFERENCES:
patent: 3977262 (1976-08-01), Randolph
patent: 4161344 (1979-07-01), Delarbre et al.
patent: 4168869 (1979-09-01), Stephan
Garrett Robert E.
Moritz Scott L.
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