US3557985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper-proof plastic closure cap and method of making same
Assignee: Individual
•
Filing: 1969-06-02
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Granted: 1971-01-26
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Expires: 1989-06-02
Abstract
Abstract A two-piece closure cap for self-locking tamperproof containers consisting of (a) a resilient molded plastic cylindrical part having an integrally formed resilient ring member extending inwardly from the interior cylindrical surface and a plurality of integrally formed radially inwardly extending lugs spaced around the interior cylinder surface below the ring member and (b) a separate top closure for the cap consisting of a disc which fits into an annular recess in the interior cylindrical surface of the cylindrical part.
Inventors
- 👤 Marcel Louis St Denis
- 👤 Andrew Raoul St Denis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:15
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/04; B65D41/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 words
A closure cap comprising a molded plastic cylindrical member having an integrally formed resilient ring member extending inwardly from the interior cylindrical surface thereof, said ring member being adapted to engage the mouth of a container, and a plurality of integrally formed radially inwardly extending lugs spaced around the interior cylindrical surface below the ring member, said lugs being adapted to engage notches on the upper end of the container, and a disc member which closes the upper end of the cylindrical member.
Claim 2
Dependent Claim
83 words
A closure cap comprising a molded plastic cylindrical member having an integrally formed resilient ring member extending inwardly from the interior cylindrical surface thereof, said ring member being adapted to engage the mouth of a container, and a plurality of integrally formed radially inwardly extending lugs spaced around the interior cylindrical surface below the ring member, said lugs being adapted to engage notches on the upper end of the container, and a disc member which closes the upper end of the cylindrical member.
Claim 3
Dependent Claim
25 words
A closure cap according to claim 1 wherein the disc member fits into an annular recess in the interior cylindrical surface of the cylindrical member.
Claim 4
Dependent Claim
18 words
A closure cap according to claim 1 wherein the disc member is made from plastic, metal or cardboard.
Claim 5
Dependent Claim
16 words
A closure cap according to claim 1, wherein the cylindrical member is molded from a polyolefin.
Claim 6
Independent Claim
73 words
A method of manufacturing a closure cap which comprises molding from a resilient plastic a cylindrical member having an integrally formed resilient ring member extending inwardly from the interior cylindrical surface thereof and a plurality of integrally formed radially inwardly extending lugs spaced around the interior cylindrical surface below the ring member, separately forming a disc member from a rigid material and pressing the disc member into the top of the cylindrical member.
Claim 7
Independent Claim
73 words
A method of manufacturing a closure cap which comprises molding from a resilient plastic a cylindrical member having an integrally formed resilient ring member extending inwardly from the interior cylindrical surface thereof and a plurality of integrally formed radially inwardly extending lugs spaced around the interior cylindrical surface below the ring member, separately forming a disc member from a rigid material and pressing the disc member into the top of the cylindrical member.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |