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US 4,519,518 AGranted
Means for mounting a closure in a predetermined position
AssigneeSpecialty Packaging Products, Inc.
InventorsLaurence E. Wiles, Frank C. Page, III
Life of this patent
Estimating the term…
Abstract
A container with a threaded neck portion is adapted to be closed with a closure engaging the threads of the neck portion. The threads of the neck portion have at least two stops disposed at opposite ends of the threads. The threads may be continuous or interrupted but have a maximum pitch of 8 degrees. The two stops of the threads on the neck portion insure that the closure is stopped at a predetermined position relative to the container after full-threaded rotation of the closure onto the threaded neck portion has been carried out.
Claims10
A container and closure assembly comprising
- (a) a threaded neck portion on said container which includes at least one external helical thread having an upper non-helical stop surface and at least one external helical thread having a lower non-helical stop surface;
- (b) a closure having at least one internal mating helical thread having an upper non-helical stop surface and at least one internal helical thread having a lower non-helical stop surface;
- whereby said upper and lower stop surfaces of said external and internal helical threads respectively contact each other to stop the threading rotation of said closure on said neck portion at a predetermined position.
Dependencies are inferred from the claim text.