Receptacles – Outlet or junction box type – Sectional receptacle
Patent
1981-11-16
1983-08-16
Price, William
Receptacles
Outlet or junction box type
Sectional receptacle
220453, 220 5A, 228165, 228184, F17C 114, B23K 3100
Patent
active
043986463
ABSTRACT:
A multi-layered vessel which includes a multi-layered generally cylindrical shell and at least one multi-layered generally hemispherical head of less thickness than the shell. The head has a main section and discontinuity neutralizing portion adjacent the shell. Each layer of the head main section and the discontinuity neutralizing portion have gores with substantially equal radius of curvature. The discontinuity neutralizing portion gores have a different center of curvature than the gores of the head main section.
REFERENCES:
patent: 726026 (1903-04-01), Canda
patent: 1467792 (1923-09-01), Holmes
patent: 3604587 (1971-09-01), Pechacek
patent: 3774296 (1973-11-01), Clay
patent: 3785040 (1974-01-01), Pechacek
Section VIII, Rules for Construction of Pressure Vessels, ANSI/ASME BPV-VIII, Figs. AD-1117.5 and ULW-17.5, Jul. 1, 1980.
Elkins Gary E.
Hahn & Clay
Price William
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