Receptacles – Closures – External and internal bar or closure
Patent
1978-07-10
1980-02-19
Hall, George T.
Receptacles
Closures
External and internal bar or closure
220251, 220304, B65D 4500
Patent
active
041890590
ABSTRACT:
An improved filler cap for a tank having an opening defined by an annular wall of the type comprising (1) a plug member having an outwardly extending flange at its upper end and a lower end having a lower surface for contacting a sealing member disposed about the plug periphery, (2) a sealing member, and (3) a retaining member positioned below the sealing member for compressing the sealing member against the lower end of the plug member. In the improved cap, the surface of the lower end of the plug member and the upper surface of the retaining member define between them a first grooved portion for clinching the sealing member in position adjacent the plug periphery and a second radially inwardly disposed grooved portion of reduced cross section for accommodating fuel induced swelling or pressure induced deformation of the sealing member. With this improved structure, the cap can relieve pressure without interference from the sealing member, as the clinch groove restrains the sealing member from outward deformation and the accommodation groove receives the deformation radially inward.
REFERENCES:
patent: 3343707 (1965-10-01), De Pew et al.
patent: 3476285 (1969-11-01), De Pew
Hall George T.
Shaw Aero Devices Inc.
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