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US 4,569,457 AGranted
Bottle closure
AssigneeYoshida Industry Co., Ltd.
InventorsYoshiharu Hatakeyama, Shinichi Kozuka
Life of this patent
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Abstract
A bottle closure includes a frusto-conical hollow sealing member open at its lower end and formed of a soft synthetic-resin material, and a closure cap having a T-shape and formed of a hard synthetic-resin material. The upper end of the sealing member is embedded in the closure cap, thereby integrally mounting the sealing member on the closure cap.
Claims3
A bottle closure comprising:
- a closure cap formed of a hard thermoplastic synthetic resin material, said closure cap having a substantially T-shape in elevational cross section including vertical and horizontal sections;
- an inverted frusto-conical sealing member formed of a soft thermoplastic synthetic resin material and provided at the outer surface thereof with circumferentially extended projections;
- and
- said sealing member being integrally mounted on said vertical section of said closure cap, with an upper end of said sealing member being embedded in said horizontal section of said closure cap by injection molding of said closure cap over said upper end of said sealing member.
1 more element
Dependencies are inferred from the claim text.