Dispensing – With lock or fastening seal – Inhibiting disassembly
Reexamination Certificate
2000-12-05
2001-11-13
Shaver, Kevin (Department: 3754)
Dispensing
With lock or fastening seal
Inhibiting disassembly
C222S383100, C215S332000, C215S276000
Reexamination Certificate
active
06315167
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a bayonet-type finish for a container. More specifically, the invention relates to a finish including about its circumference alternating bayonet provisions including peripheral stops, catch portions and detent ridges, and ramp provisions, all of which give to the user tactile notification of the condition of the closure; i.e., whether it is fully locked on, approaching locked condition or removal, or completely separated from the finish.
BACKGROUND OF THE INVENTION
The prior art is replete with disclosures of finishes and caps for bottles. Most of these are screw-type. More recently, the art has expanded in the direction of bayonet-type finishes and caps. The latter are coming into their own, partly because of the ease of molding the closures which require only two diametrically opposed inward lugs instead of threads. Threaded caps have to be “screwed off” the mold core. With lugged caps, lugs can be formed by mold pins which intrude into the space inside the cap through the top wall of the cap, leaving after molding inoffensive openings in the top wall of the cap outside the plug-type seal. Such lug-type caps are easy to pop out of the mold, and there is substantial savings in mold time.
A drawback of lug-type caps is that, because the lugs and bayonet catch portions are not visible to the user, it has been a matter of speculation for him to determine just where in the locking or unlocking process the cap and bottle are at a given time. In other words, there has been a need for better tactile notification to the user of the position of the lugs are as he manipulates the cap on the finish.
SUMMARY OF THE INVENTION
The present invention is defined in the claims. Briefly, for use with a cap having inward lugs in its skirt, the invention is a container including a cylindrical finish having bayonet provisions, each comprising a first rib-like stop portion extending parallel to the axis of the finish and a catch portion extending from the stop portion circumferentially of the cylindrical finish to a distal end. The catch portion has an outwardly and downwardly sloping upper surface portion, and a radial lower surface. A detent ridge runs downward from the distal end of the catch portion. The finish further includes ramp provisions, each comprising a second rib-like stop portion extending parallel to the axis of the finish and a wedge-like shape extending from the upper end of the stop portion downward toward the distal end of the catch portion. The wedge-like shape has a sloping surface facing the distal end, the sloping surface extending from below the catch portion to above the catch portion and sloping at an angle of about 40° to an imaginary circumfrential line passing through the sloping surface.
REFERENCES:
patent: 3339770 (1967-09-01), Weigand
patent: 4335823 (1982-06-01), Montgomery et al.
patent: 5238152 (1993-08-01), Maas et al.
patent: 5810209 (1998-09-01), Foster
patent: 8203058 (1982-09-01), None
Brecheisen William W.
Haffner Eugene F.
Hiltner James E.
Keung Wing-Kwong
Scott Anthony J.
Cartagena Melvin A.
Owens-Illinois Closure Inc.
Shaver Kevin
LandOfFree
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