Closure devices for containers

Assignee: Astra Plastique SA

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Filing: 1973-07-16

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Granted: 1975-03-18

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Expires: 1993-07-16

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Abstract

Abstract A closure device for bottle containing solutions which are to be taken by means of a syringe through a perforatable diaphragm, comprises a perforatable closuring disc, a retaining member screwed on the bottle neck and having an annular end wall which presses the periphery of the disc against the end edge of the bottle neck while leaving exposed the central portion of the disc, and a removable covering cap screwed on the retaining member to cover the central opening thereof. The threads of the neck are left-handed and the lower end of the retaining member has inner resilient teeth which cooperate with ratchet-shaped serrations of the neck to lock the retaining member in position. The lower end of the retaining member also has outer ratchetshaped serrations which cooperate with resilient inner resilient teeth carried by the lower portion of the covering cap to lock same in position, but this lower portion of the covering cap is tearable from the skirt thereof to permit of removing the cap when the content of the bottle is to be used.

Inventors

👤 Andre Bereziat

Bibliographic Details

Application Number —

Jurisdiction US

Data Source google_patents

Last Synchronized 2026-10-29 08:25

CPC Classifications

B; B65; B65D; B65D51/00; B65D51/18; B65D51/20; B65D2251/00; B65D2251/0003; B65D2251/0006; B65D2251/0015; B65D2251/0068; B65D2251/009

Claims Analysis

Total Claims: 4

Claim 1

Independent Claim 229 words

A closure device for closing the neck of a container, comprising: an outer threaded portion on the container neck adjacent to the edge around the opening of the neck; a perforatable closure disc overlying the edge about said opening; a retaining member for maintaining said disc in sealed engagement with said edge about said opening, the retaining member having a substantially flat annular end wall overlying the periphery of said disc to press it against said edge and said annular end wall defining a central opening through the end wall exposing a portion of said disc for perforation, and the retaining member having a first annular skirt surrounding said neck and having an internal screw-threaded portion engaging said outer threaded portion to mount the retaining member on said neck, and said first skirt having an external screw-threaded portion therearound; a cap covering said retaining member and having a closed end wall overlying the end wall of said retaining member and including an inwardly projecting boss portion entering said central opening and abutting said portion of said disc, and the cap further including a second annular skirt surrounding said first annular skirt and having an internal screw-threaded portion engaging said external threaded portion to secure the cap on said retaining member; and said inner screw-threaded portion of said first skirt and said external screw-threaded portion thereof being of opposite hands.

Claim 2

Dependent Claim 229 words

Claim 3

Dependent Claim 184 words

In a closure device as claimed in claim 1, means for resisting opening of the closure device comprising: ratchet-shaped serrations extending outwardly around said neck adjacent the screw-threaded portion and on the opposite side thereof from said opening of the neck; said retaining member having on the inner periphery of said skirt resilient blade-like teeth placed and so directed as to yieldably engage sAid serrations when the retaining member is being screwed onto the neck but to prevent unscrewing of the member therefrom, and said first skirt having serrations around its outer periphery adjacent to its external screw-threaded portion; and said cap having an open end on said second skirt opposite said closed end wall, an annular tearable portion attached to the open end of the skirt and removable therefrom by tearing, and said tearable portion having on its inner periphery resilient blade-like teeth placed and so directed as to yieldably engage the serrations around the first skirt when the cap is being screwed onto the neck but to prevent unscrewing of the cap until said tearable portion is torn from the second skirt.

Claim 4

Dependent Claim 45 words

In a closure device as set forth in claim 1, said closure disc comprising a metallic sheet adapted to engage the edge about said opening of the neck, and a layer of resilient material overlying said sheet to be compressed by said annular end wall.

References Cited (Backward Citations)

US2099370A Cited

US2162754A Cited

US2364126A Cited

US3013687A Cited

US3088615A Cited

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USPTO Annuity & Maintenance Windows

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-03-17	1978-09-16	1979-03-18	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-03-17	1982-09-16	1983-03-18	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-03-17	1986-09-16	1987-03-18	$7700.00	Window Closed / Lapsed

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