Patent US3933271A successfully refreshed from Google Patents.
US3933271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Captive cap
Assignee: Colgate Palmolive Co
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Filing: 1974-02-14
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Granted: 1976-01-20
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Expires: 1994-02-14
Abstract
Abstract This invention relates to an integrally molded captive cap assembly including a threaded base for attachment to a container and a lead tube which projects into a hollow cap which is pivotally connected to the base. An integrally molded pair of spring members are disposed between the cap and the base and have end portions pivotally connected to the base and to the cap. The spring members bias the cap toward one of two positions. When the cap is in a closed position, the spring members bias the cap toward the closed position and when the cap is opened past an intermediate position, the spring members bias the cap toward an open position.
Inventors
- 👤 Russell Park McGhie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:53
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/06; B65D47/12; B65D47/14; B65D47/147; B65D47/08; B65D47/0804; B65D47/0809; B65D47/0814; B65D2251/00; B65D2251/10; B65D2251/1016; B65D2251/105
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
177 words
A captive cap comprising a hollow base, a hollow lead tube projecting from and communicating with said hollow base, means for attaching said hollow base to a container, a cap having a hollow portion, said hollow lead tube projecting toward said cap and proportioned to reside within said cap when said cap is closed onto said hollow base, a hinge member disposed between said hollow base and said cap, at least one spring member disposed between said hollow base and said cap and spaced apart from said hinge member and with said spring member having a first end pivotally attached to said hollow base, a second end pivotally attached to said cap, and a curved portion joining said first end and said second end, said cap including a protuberance extending from the inner surface of said cap and said hollow base having a complimentary recess on its outer surface said protuberance being disposed to lodge in said complimentary recess when said cap is closed onto said hollow base for reversibly locking said cap onto said hollow base.
Claim 2
Dependent Claim
177 words
A captive cap comprising a hollow base, a hollow lead tube projecting from and communicating with said hollow base, means for attaching said hollow base to a container, a cap having a hollow portion, said hollow lead tube projecting toward said cap and proportioned to reside within said cap when said cap is closed onto said hollow base, a hinge member disposed between said hollow base and said cap, at least one spring member disposed between said hollow base and said cap and spaced apart from said hinge member and with said spring member having a first end pivotally attached to said hollow base, a second end pivotally attached to said cap, and a curved portion joining said first end and said second end, said cap including a protuberance extending from the inner surface of said cap and said hollow base having a complimentary recess on its outer surface said protuberance being disposed to lodge in said complimentary recess when said cap is closed onto said hollow base for reversibly locking said cap onto said hollow base.
Claim 3
Dependent Claim
19 words
A captive cap according to claim 1, wherein said curved portion is bounded by two parallel cylindrically curved surfaces.
Claim 4
Dependent Claim
32 words
A captive cap according to claim 1, wherein there are a pair of spring members disposed spaced apart from said hinge portion and positioned one at each end of said hinge member.
Claim 5
Dependent Claim
15 words
A captive cap according to claim 1, wherein said spring member has a uniform cross-section.
Claim 6
Dependent Claim
24 words
A captive cap according to claim 1, wherein said cap, said base, said spring member and said hinge member comprise an integrally molded assembly.
Claim 7
Dependent Claim
26 words
A captive cap according to claim 5, wherein said pivotal attachment of said spring member to said hollow base and said cap comprise integrally molded members.
Claim 8
Dependent Claim
203 words
A captive cap comprising a hollow base, a hollow lead tube having an outer surface with a first conical configuration, projecting from and communicating with said hollow base, means for attaching said hollow base to a container, a cap having a hollow interior defined by an inner wall having a second conical configuration, said hollow lead tube projecting toward said cap and proportioned to reside within said cap when said cap is closed onto said hollow base, a hinge member disposed between said hollow base and said cap, at least one spring member disposed between said hollow base and said cap and spaced apart from said hinge member and with said spring member having afirst end pivotally attached to said hollow base, a second end pivotally attached to said cap, and a curved portion joining said first end and said second end, said first and second conical configurations being mutually parallel and complimentary, said cap including a protuberance extending from said inner wall and said hollow base having a complimentary recess on said outer surface, said protuberance being disposed to lodge in said complimentary recess when said cap is closed onto said hollow base for reversibly locking said cap onto said hollow base.
Claim 9
Dependent Claim
203 words
A captive cap comprising a hollow base, a hollow lead tube having an outer surface with a first conical configuration, projecting from and communicating with said hollow base, means for attaching said hollow base to a container, a cap having a hollow interior defined by an inner wall having a second conical configuration, said hollow lead tube projecting toward said cap and proportioned to reside within said cap when said cap is closed onto said hollow base, a hinge member disposed between said hollow base and said cap, at least one spring member disposed between said hollow base and said cap and spaced apart from said hinge member and with said spring member having afirst end pivotally attached to said hollow base, a second end pivotally attached to said cap, and a curved portion joining said first end and said second end, said first and second conical configurations being mutually parallel and complimentary, said cap including a protuberance extending from said inner wall and said hollow base having a complimentary recess on said outer surface, said protuberance being disposed to lodge in said complimentary recess when said cap is closed onto said hollow base for reversibly locking said cap onto said hollow base.
Claim 10
Dependent Claim
16 words
The captive cap of claim 7 wherein said recess is disposed oppositely from said hinge member.
Claim 11
Dependent Claim
13 words
The captive cap of claim 7 wherein said protuberance has a rounded surface.
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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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |