Work holders – Holder mounted for movement – Relative to a station
Patent
1984-08-06
1986-09-16
Schmidt, Frederick R.
Work holders
Holder mounted for movement
Relative to a station
269 58, 269 69, B23Q 116
Patent
active
046117970
ABSTRACT:
A fluid-powered rotary table formed of a base and a rotary housing which sealingly cooperates therewith along a planar surface. A toroid-shaped annular cavity is formed between the base and the rotary housing which are rotatable relative to one another along a central axis perpendicular to the plane and the toroid-shaped annular cavity. The annular cavity is divided into two fluid-tight annular segments by a stationery block affixed to the base and projecting into the cavity and a rotary block affixed to the rotary housing and projecting into said cavity. By admitting or removing fluid from each of the annular cavity segments the rotary housing may be moved relative to the base.
REFERENCES:
patent: 2534882 (1950-12-01), Sherr
patent: 3424319 (1969-01-01), Hohlfelder, Jr. et al.
patent: 3528328 (1970-09-01), Jeanneret
patent: 3647043 (1972-03-01), Garetto
patent: 3658315 (1972-04-01), Boucherie
patent: 3825245 (1974-07-01), Osburn et al.
patent: 4380939 (1983-04-01), Gardner
patent: 4381858 (1983-05-01), Riche
Chilton's Product Design & Development Magazine, vol. 39, No. 7; Rotac Fluid-Powered Rotary Actuator; p. 90.
Chilton's Product Design & Development Magazine, vol. 39, No. 7; Multi-Angle Rotary Actuator of Rotomation; p. 45.
Parker Fluid Power brochure, Hydraulic Cylinder Cushioning; of unknown date.
Aeroquip QR-70 Super Cushion brochure of unknown date.
Schad Steven P.
Schmidt Frederick R.
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