Wooden receptacles – Barrels – Bungs
Patent
1975-01-30
1976-09-28
Dixson, Jr., William T.
Wooden receptacles
Barrels
Bungs
217110, 220307, 220DIG19, B65D 3904
Patent
active
039826490
ABSTRACT:
A bung for the bung orifice of a pressurized beer barrel and the like including an outer shell having an external wall surface adapted for sealing engagement with the wall of the bung orifice and a closure head extending radially inwardly from an attachment at an intermediate point on the inside of the outer shell. The outer shell and closure head preferable are an integral molded plastic unit exhibiting yieldability and resiliency. The closure head is arranged so that opposed sections thereof are arranged along a continuous line from their attacment to the outer shell and meet at a common central area that forms a central swivel for the opposed sections whereby upon insertion into a bung orifice the closure head is arranged at an inwardly directed angle of inclination and the resiliency of the closure head together with the fluid pressure in the barrel applies a radially outwardly directed force via the closure head to the outer shell and external wall surface in a toggle joint-like action to increase the sealing effect of the bung in the bung orifice. The closure head may be formed on a slight angle of inclination to the outer shell or be provided with structure that causes it to assume this angle upon insertion into the bung orifice when the outer shell is placed under compressive forces. In other forms the closure head has a column concentrically arranged within and spaced from the outer shell that is attached at its inner end to the closure head to strengthen the closure head and form a means which the puller tool may grip to pull on the closure head to reverse the position of the closure head, radially contract the outer shell and pull the bung from a bung orifice in a barrel and the like.
REFERENCES:
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patent: 2081132 (1937-05-01), Barnes
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patent: 3133666 (1964-05-01), Henchert
patent: 3381841 (1968-05-01), Kusserow
patent: 3473686 (1969-10-01), Kusserow
patent: 3742898 (1973-07-01), Souza
Denver Plastics, Inc.
Dixson, Jr. William T.
Lewis, Jr. Ancel W.
Shoap Allan N.
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