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US3685676A Expired / Lapsed US ⏱️ 0.0 years remaining

Double shell child-proof bottle cap

Assignee: Silgan Plastic Food Containers Corp
•
Filing: 1970-10-02
•
Granted: 1972-08-22
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Expires: 1990-10-02
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Abstract

Abstract A child-proof screw on cap of the double shell type for a medicine bottle or the like. The cap has an inner threaded shell which fits the bottle neck and an outer shell which telescopingly overlies and encloses the inner shell when in safety position. The two shells are connected together by an axial pivot and are relatively rotatable. The outer shell has a top and a skirt and a deformable web connecting the top and skirt whereby the skirt can be moved axially to expose at least part of the outer wall of the inner shell for grasping by the fingers of a user in order to unscrew the inner shell off of the bottle. Cooperating one-way drive ratchet means are formed on mating portions of the two shells to provide for screwing the cap onto the bottle by rotating the outer shell. The axial force required to move the outer shell from safety position to expose the inner shell by deforming the web of the outer shell, is beyond the strength of a small child.

Inventors

  • 👤 Peter P Gach
  • 👤 Henry K Leonard

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 18:21
CPC Classifications
B; B65; B65D; B65D50/00; B65D50/02; B65D50/04; B65D50/045

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 128 words
A child-proof screw-on cap for a medicine bottle or the like, said cap comprising, an inner threaded shell adapted to screw onto said bottle, and an outer inverted, generally cup-shaped shell positioned over said inner threaded shell, means pivotally attaching said outer shell to said inner shell at the top center thereof for relative rotation therebetween when said outer shell is in its safety position, said outer shell having a skirt adapted to telescopingly enclose the outer surface of said inner shell when said outer shell is in its safety position, and a top overlying the top of said inner shell and consisting, at least in part, of a flexible circular web providing for axial movement of said skirt relative to said top and to said inner shell.
Claim 2
Dependent Claim 128 words
A child-proof screw-on cap for a medicine bottle or the like, said cap comprising, an inner threaded shell adapted to screw onto said bottle, and an outer inverted, generally cup-shaped shell positioned over said inner threaded shell, means pivotally attaching said outer shell to said inner shell at the top center thereof for relative rotation therebetween when said outer shell is in its safety position, said outer shell having a skirt adapted to telescopingly enclose the outer surface of said inner shell when said outer shell is in its safety position, and a top overlying the top of said inner shell and consisting, at least in part, of a flexible circular web providing for axial movement of said skirt relative to said top and to said inner shell.
Claim 3
Dependent Claim 32 words
A child-proof cap according to claim 1 and cooperating one-way drive ratchet means on mating portions of the inner surface of said outer shell and the outer surface of said inner shell.
Claim 4
Dependent Claim 20 words
A child-proof cap according to claim 1 in which the top of said outer shell is a flat disc-like portion.
Claim 5
Dependent Claim 50 words
A child-proof cap according to claim 1 in which the web of the outer shell is deformable for moving said outer shell between a safety position enclosing the inner shell and an open position elevated above and exposing at least a part of the exterior surface of said inner shell.
Claim 6
Dependent Claim 29 words
A child-proof cap according to claim 4 in which the web of the outer shell is biased for retaining said outer shell in safety position enclosing the inner shell.
Claim 7
Dependent Claim 35 words
A child-proof cap according to claim 4 in which the web of the outer shell is constructed and arranged for deformation ''''over-center'''' in moving said outer shell between the safety position and open position thereof.

References Cited (Backward Citations)

US3422978A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-08-22 1976-02-21 1976-08-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-08-22 1980-02-21 1980-08-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-08-22 1984-02-21 1984-08-22 $7700.00 Window Closed / Lapsed

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