Bottles and jars – Closures – Frangible member or portion
Patent
1979-05-21
1980-09-30
Norton, Donald F.
Bottles and jars
Closures
Frangible member or portion
264156, B65D 4134
Patent
active
042250501
ABSTRACT:
A molded or formed tamper-proof cap adapted to be applied in unitary form to a container opening having a threaded neck and a ratchet retainer means associated with said threaded neck but being resistant to removal in unitary form from said container without separation of its parts. The present caps comprise a main cap body and an annular retainer skirt element which is coaxial with and has a larger diameter than said main cap body. Said retainer skirt element has a top surface comprising an annular horizontal flange and a cylindrical vertical side wall, said side wall being provided with angular engagement means adapted to slip over the ratchet retainer means present on the container when said cap is rotated onto the threaded neck of the container but to resist counter-rotation of said cap. The invention is characterized by providing said annular flange with at least one discontinuous transverse severance line which forms a segmented cut or circle which substantially surrounds the main cap body, the leading and trailing ends of said severance lines forming therebetween narrow bridging areas of said flange, which areas are flexible or weak in the direction of counter rotation of said cap.
REFERENCES:
patent: 3460703 (1969-08-01), Leftault
patent: 3504818 (1970-04-01), Crisci
patent: 3874540 (1975-04-01), Hidding
patent: 3904061 (1975-09-01), Keeler
patent: 4153174 (1979-05-01), Keeler
Norton Donald F.
Segen Industries, Inc.
Tully Thomas L.
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