Patent US3690628A successfully refreshed from Google Patents.
Patent US3651972A successfully refreshed from Google Patents.
US3651972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cap
Assignee: Individual
•
Filing: 1970-12-08
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Granted: 1972-03-28
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Expires: 1990-12-08
Abstract
Abstract A cap of elastic material for use in combination with a neck portion of hard material having an annular projection or ridge formed in the lower portion thereof has the hollow lower portion or skirt whose cross section is elliptical or polygonal such as triangular, square and the like. A bow-shaped or crescent-like recess is formed in the inner surface of the hollow skirt portion for engagement with the annular projection or ridge when the cap is fitted over the neck portion. The cap may be readily released from the neck portion just by applying the pressure to the skirt portion without any rotation of the cap. The neck portion may have a top wall having an opening while the cap has an opening formed through its top wall so that upon rotation of a slight amount of the cap the container is ready to dispense the contents thereof without removing the cap.
Inventors
- 👤 Mimpei Itoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:57
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/20; B65D47/26; B65D47/261; B65D47/265; B65D41/00; B65D41/02; B65D41/16; B65D41/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
A cap for use in combination with a neck portion of a container made of a hard material, said neck portion having an annular projection or step formed in the lower portion thereof, wherein said cap is made of a flexible material and provided with at least one bow-shaped or crescent-like recess formed in the lower inner surface of said cap; and said annular projection or step is normally fitted into said recess when said cap is fitted over said neck portion and is adapted to be released from said recess when the force is applied to said cap laterally of the longitudinal axis thereof.
Claim 2
Dependent Claim
105 words
A cap for use in combination with a neck portion of a container made of a hard material, said neck portion having an annular projection or step formed in the lower portion thereof, wherein said cap is made of a flexible material and provided with at least one bow-shaped or crescent-like recess formed in the lower inner surface of said cap; and said annular projection or step is normally fitted into said recess when said cap is fitted over said neck portion and is adapted to be released from said recess when the force is applied to said cap laterally of the longitudinal axis thereof.
Claim 3
Dependent Claim
41 words
A cap as specified in claim 1 wherein the lower portion of said cap has a polygonal cross section and said bow-shaped or crescent-like recess is formed in at least one inner side wall of said lower portion of said cap.
Claim 4
Dependent Claim
14 words
A cap as specified in claim 2 wherein said polygonal cross section is triangular.
Claim 5
Dependent Claim
14 words
A cap as specified in claim 2 wherein said polygonal cross section is square.
Claim 6
Dependent Claim
51 words
A cap as specified in claim 1 wherein the lower portion of said cap has a substantially elliptical cross section and said bow-shaped or crescent-like recess is formed in at least one of the inner surfaces opposed diagonally across the minor axis of said lower elliptical lower portion of said cap.
Claim 7
Dependent Claim
22 words
A cap as specified in claim 1 wherein said bow-shaped or crescent-like recess has a cross section mating with said annular projection.
Claim 8
Dependent Claim
70 words
A cap as specified in claim 6 wherein both of the distances from the inner surface of the top of said cap to said bow-shaped or crescent-like recess and from the top of said neck portion to said annular projection are so selected that when said cap is fitted over said neck portion said inner surface of said top of said cap presses against said top of said neck portion.
Claim 9
Dependent Claim
39 words
A cap as specified in claim 1 wherein said neck portion has a top wall which is partially opened while the top wall of said cap is provided with an opening corresponding to said opening of said neck portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |