Receptacles – Closures – Removable closure retained by ductile in situ deformation
Patent
1978-06-06
1980-01-15
Pollard, Steven M.
Receptacles
Closures
Removable closure retained by ductile in situ deformation
220 31, 229 25R, 229 29M, 229 44R, B65D 4116, A47J 4100, B65D 100, B65D 548
Patent
active
041834461
ABSTRACT:
A foamed plastic food container having a dish and cover interconnected by a hinge at one end and a latching means at the other end. The hinge is biased towards the open position. The latching means comprises a male flange-like member raised above the rim of the dish and a female member on the cover. The female member comprises an outwardly protruding chamber having an indentation sloping inward toward a shelf, with a U-shaped slot being cut into the indentation and shelf. The slot is substantially wider than the width of the flange thereby permitting easy closing and opening.
REFERENCES:
patent: 3184133 (1965-05-01), Boyd et al.
patent: 3876130 (1975-04-01), Haase
patent: 3935962 (1976-02-01), Schubert et al.
patent: 4057169 (1977-11-01), Payne
patent: 4079880 (1978-03-01), Edwards
patent: 4127189 (1978-11-01), Shumrak et al.
patent: 4132344 (1979-01-01), Jewell
patent: 4150777 (1979-04-01), Cyr et al.
Pollard Steven M.
Sweetheart Plastics, Inc.
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