Work holders – Work-underlying support – Movable roller
Patent
1983-05-02
1985-09-03
Moon, Charlie T.
Work holders
Work-underlying support
Movable roller
52749, B23Q 300
Patent
active
045387982
ABSTRACT:
A plurality of annular plates are machined to have substantially identical outer diameters equal to the inner diameter of the head to be made. A first annular plate is arranged as an annular base plate. The other annular plates are cut into four congruent arc portions of less than 90.degree. and braces are attached to each congruent arc portion. A plurality of the arc portions are mounted by a first end to the upper surface of the annular base plate in a substantially equally, circumferentially spaced arrangement. The second end of each arc portion is fastened to the outer surface of a central collar to form the hemispherical frame.
REFERENCES:
patent: 3374528 (1968-03-01), Bowcutt et al.
patent: 3374935 (1968-03-01), Pechacek
patent: 3423820 (1969-01-01), Pechacek et al.
patent: 3604587 (1971-09-01), Pechacek
patent: 3774296 (1973-11-01), Clay
patent: 3785040 (1974-01-01), Pechacek
patent: 3908975 (1975-09-01), Byrant
patent: 4159573 (1979-07-01), Plihal
patent: 4276733 (1981-07-01), Casper et al.
patent: 4295262 (1981-10-01), Grote et al.
patent: 4400927 (1983-08-01), Walde-Tinase
Hahn & Clay, brochure Serial No. 036, entitled "Complete-Layered High-Pressure Vessels", Hahn & Clay in accord with ASME Code Section VIII, Div. 1 & 2.
Hahn & Clay
Moon Charlie T.
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