Cap and means for retaining cap liner

Details Cap and means for retaining cap liner Cap and means for retaining cap liner

1985-06-11

1987-03-10

Norton, Donald F.

Bottles and jars

Closures

Cap type

B65D 5304

Patent

active

046485201

ABSTRACT:
A plastic closure cap and liner retention arrangement therefor which permits installation of the liner into the cap without distortion of the liner, and thereafter effectively holds the latter captive during subsequent handling or use of the cap. The construction comprises a cup-shaped molded plastic cap having a top wall and an annular side wall, and a sealing liner carried in the cap adjacent its top wall. Internal threads in the cap wall enable the cap to be screwed onto the threaded neck of a container in the usual manner. The cap interior has a ledge structure which may be annular, and in which the liner is nested. The ledge is preferably integral with the top and side walls of the cap. With the cap inverted, and following insertion of the liner into the cap, a punch having one or more tapered working edges is applied to the ledge and displaces a portion thereof to form a retention shoulder. The retention shoulder overlies at least part of the periphery of the liner and prevents inadvertent dislodgement thereof prior to installation of the cap onto the container. The advantage of the invention is that the liner need not be deformed during its insertion into the cap, as normally occurs where such liners are required to by-pass one or more molded lugs or nibs, or alternately to by-pass the cap threads. Also, there is less likelihood of loss of the liner prior to use.

REFERENCES:
patent: 1937492 (1933-11-01), Merolle
patent: 2039757 (1936-05-01), Von Till
patent: 2904837 (1959-09-01), Crabbe
patent: 3612325 (1971-10-01), Williams
patent: 4378893 (1983-04-01), Wilde et al.
patent: 4381840 (1983-05-01), Ostrowsky

Affiliated with

Also associated with

Rating

Cap and means for retaining cap liner does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cap and means for retaining cap liner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cap and means for retaining cap liner will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1017213