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US3843008A Expired / Lapsed US ⏱️ 0.0 years remaining

Safety closures for containers

Assignee: Individual
•
Filing: 1973-05-24
•
Granted: 1974-10-22
•
Expires: 1993-05-24
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Abstract

Abstract A safety closure having an inner closure cap for threadable attachment to a threaded part of a container and an outer closure cap disposed over the inner closure cap, each cap having a cylindrical skirt and an end wall at one end, the opposite end being open. The caps are rotatably mounted together with the outer cap normally rotatable on the inner cap, and internal annular flange at the free end of the skirt of the outer cap retains the caps together. A diametrical upwardly opening groove is provided in the end wall of the inner cap, said groove being of less depth than the thickness of said end wall. The end wall of the outer cap is provided with a diametrically extending opening therethrough, said opening being hexagonal in crosssection and from the opening, there is an outwardly extending diametrical slot and a downwardly extending diametrical slot which, when the caps are properly oriented, is in register with the groove in the end wall of the inner cap. A key, hexagonal in cross-sectional shape, is slidably disposed in the hexagonal opening in the end wall of the outer cap and said key has a longitudinally extending flange from one of the sides adapted to be slidably disposed in one or the other slots. Normally, the key is disposed in the hexagonal opening with the flange in the outer slot. When in this position, the outer cap is freely rotatable on the inner cap. With the device attached to the externally screw threaded neck of a container, the inner cap cannot be removed when the flange of the key is in the outer slot. In order to remove the inner cap or to screw it back on, the key is removed from the opening and reinserted therein with the flange disposed in the lower slot and in the groove in the end wall of the inner cap. Thus, the inner cap will be rotated upon rotation of the outer cap.

Inventors

  • 👤 A Colella

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 05:03
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/06; B65D50/067; B65D50/068

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 296 words
A safety closure for containers comprising: a closure member with threadable attachment to a threaded part of a container; a safety cover means disposed over said closure member to protect said closure member from being inadvertently unscrewed from a container to which it is attached, said safety cover means normally being rotatable relative to said closure member; a closure member comprising an inner cap and the safety cover means comprising an outer cap having an inside diameter somewhat greater than the outside diameter of the inner cap, each cap comprising a cylindrical skirt part, and an end wall part at one end of the skirt part, the other end of the cylindrical skirt part being open, the inner cap having internal threads for reception on the external threads on a part of a container, the end wall part of the closure member having at least one external diametrically extending groove; means for rotatably retaining the outer cap on the inner cap; the end wall part of the safety cover means having an opening extending diametrically therethrough, and oppositely arranged diametrical slots extending from the opening to the respective outer and inner sides of the end wall of the safety cover means; and a key having the same cross-sectional shape as the opening through the end wall of the outer cap, and a flange extending outwardly from one side of the key and longitudinally of said key, said key being slidable in said opening in the end wall of the outer cap with the flange thereof in one of the slots, said flange being disposed in the inner slot and groove in the end wall of the inner cap when said caps are oriented so that the inner slot registers with the groove of the inner cap.
Claim 2
Dependent Claim 296 words
A safety closure for containers comprising: a closure member with threadable attachment to a threaded part of a container; a safety cover means disposed over said closure member to protect said closure member from being inadvertently unscrewed from a container to which it is attached, said safety cover means normally being rotatable relative to said closure member; a closure member comprising an inner cap and the safety cover means comprising an outer cap having an inside diameter somewhat greater than the outside diameter of the inner cap, each cap comprising a cylindrical skirt part, and an end wall part at one end of the skirt part, the other end of the cylindrical skirt part being open, the inner cap having internal threads for reception on the external threads on a part of a container, the end wall part of the closure member having at least one external diametrically extending groove; means for rotatably retaining the outer cap on the inner cap; the end wall part of the safety cover means having an opening extending diametrically therethrough, and oppositely arranged diametrical slots extending from the opening to the respective outer and inner sides of the end wall of the safety cover means; and a key having the same cross-sectional shape as the opening through the end wall of the outer cap, and a flange extending outwardly from one side of the key and longitudinally of said key, said key being slidable in said opening in the end wall of the outer cap with the flange thereof in one of the slots, said flange being disposed in the inner slot and groove in the end wall of the inner cap when said caps are oriented so that the inner slot registers with the groove of the inner cap.
Claim 3
Dependent Claim 26 words
The invention defined by claim 1, wherein the key and the opening in the end wall of the outer cap have a hexagonal configuration in cross-section.
Claim 4
Dependent Claim 54 words
The invention defined by claim 2, wherein the top and bottom walls of the opening through the end wall of the outer cap are substantially parallel with the outer and inner sides of the end wall of the outer cap and the slots extend midway between the ends of said walls of the opening.
Claim 5
Dependent Claim 41 words
The invention defined by claim 1, wherein the means for retaining the caps together includes an internal flange at the open end of the skirt, said flange extending inwardly to overlap a portion of the free end of the iNner cap.
Claim 6
Dependent Claim 35 words
The invention defined by claim 4, wherein the inner cap has an external bead at the free end of the skirt thereof for engagement with the internal flange of the skirt of the outer cap.
Claim 7
Dependent Claim 25 words
The invention defined by claim 1, wherein the key and the opening in the end wall of the outer cap have a round cross-sectional configuration.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-21 1978-04-22 1978-10-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-21 1982-04-22 1982-10-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-21 1986-04-22 1986-10-22 $7700.00 Window Closed / Lapsed

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