Locking closure cap

Details Locking closure cap Locking closure cap

1980-01-18

1981-08-04

Spar, Robert J.

Dispensing

With lock or fastening seal

Plural

222543, 222546, 215214, 215330, B65D 2542, B65D 5502

Patent

active

042817781

ABSTRACT:
A closure cap construction for a dispensing container, the cap portion thereof being of the type intended to be held permanently captive on the container and having a dispensing orifice permitting selective discharge of the container contents. The cap portion comprises a body having an internal, double-helical screw thread adapted to engage a corresponding screw thread on the neck of the container. In addition, the body has an internal, downwardly facing shoulder from which there extends a series of molded, integral locking ratchet teeth. The upper ends of the teeth are joined to the shoulder so that the latter provides a stiffening effect which minimizes undesirable flexing or deformation of the teeth. The opposite or lower ends of the teeth are exposed and unconnected, and are intended to by-pass a series of cooperable locking ratchet teeth on the container neck. Also, the root diameters of both the internal thread and the cap locking teeth are substantially the same, which simplifies the molding of the cap. In addition, due to the fact that the ratchet teeth of the cap are disposed above the level of the internal cap threads, the locking teeth do not interfere with the threads as the latter are being "started"; this arrangement reduces the manufacturing cost in that it facilitates the use of high-speed, automatic capping equipment after the filling of the containers with the intended product.

REFERENCES:
patent: 3240405 (1966-03-01), Abbott
patent: 3826394 (1974-07-01), Stull
patent: 4127221 (1978-11-01), Vere

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