Pipe joints or couplings – With means blocking release of holding means
Patent
1977-06-09
1979-01-09
Price, William
Pipe joints or couplings
With means blocking release of holding means
220293, 220303, 285158, 285203, 285209, 403349, B65D 5116, F16L 502, F16L 4108
Patent
active
041335600
ABSTRACT:
A plug and its attaching hole for use in removably securing an accessory to a pressure container. This plug includes a head portion and a reduced diameter or shank portion continuous with the undersurface of the former. Build-up portions are formed on the outer peripheral surface of the shank portion, while cut-away portions are provided in the peripheral edge of the plug-attaching hole defined in the wall of the pressure container. Upon insertion of the shank portion of the plug into the plug-attaching hole, the build-up portions formed on the outer peripheral surface of the shank portion of the plug are mated with the cut-away portions, and then the plug is turned through a given angle so that the build-up portions may engage the inner peripheral edge surface of the plug-attaching hole provided in the wall of the pressure container. This prevents the plug from being blown away from the pressure container, even if a weld formed around the head portion of the plug on an outer surface of the wall of the container is failed or broken due to deterioration.
REFERENCES:
patent: 652858 (1900-07-01), Nadorff
patent: 989901 (1911-04-01), Foley
patent: 1131399 (1915-03-01), McGinley
patent: 1841523 (1932-01-01), Crowe et al.
patent: 2361704 (1944-10-01), Patterson
patent: 3468565 (1969-09-01), Roder
Chuwman Tsutomu
Ishikawa Masakazu
Price William
Shoap Allen N.
Toyota Jidosha Kogyo Kabushiki Kaisha
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