US3589544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamperproof cap closure
Assignee: Individual
•
Filing: 1969-06-26
•
Granted: 1971-06-29
•
Expires: 1989-06-26
Abstract
Abstract A roll-on-type cap closure having an improved tamperproof feature wherein the cap closure is characterized by its ease of removal from the container to which it is threadibly engaged incident to providing the authorized user with excellent tactual, audible, and physical indications of whether the cap closure has or has not been previously subjected to tampering.
Inventors
- 👤 Charles N Hannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:41
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/34; B65D41/348
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
In a tamperproof cap closure of ductile material adapted for application to the threads on the outside surface of the mouthdefining wall of a rigid container, said cap closure having a circular top panel adapted to seal the mouth of said container and a skirt integral with and depending from the periphery of said top panel and adapted for threadable engagement with the threads of the mouth-defining wall of the container, said skirt having a lower extension, the margin thereof circumferentially indented beneath a shoulder encircling the mouth-defining wall of the container below the threaded portion for securement thereon; the improvement comprising a plurality of narrow bridge members spaced apart and deformed on the outside surface of the mouthdefining wall of the container whereby the intact deformed bridge members offer minimal rupture resistance to effect separation of the skirt from the lower extension incident to unscrewing the cap closure for removal from the container.
Claim 2
Dependent Claim
154 words
In a tamperproof cap closure of ductile material adapted for application to the threads on the outside surface of the mouthdefining wall of a rigid container, said cap closure having a circular top panel adapted to seal the mouth of said container and a skirt integral with and depending from the periphery of said top panel and adapted for threadable engagement with the threads of the mouth-defining wall of the container, said skirt having a lower extension, the margin thereof circumferentially indented beneath a shoulder encircling the mouth-defining wall of the container below the threaded portion for securement thereon; the improvement comprising a plurality of narrow bridge members spaced apart and deformed on the outside surface of the mouthdefining wall of the container whereby the intact deformed bridge members offer minimal rupture resistance to effect separation of the skirt from the lower extension incident to unscrewing the cap closure for removal from the container.
Claim 3
Dependent Claim
70 words
In combination with a rigid container, the cap closure set forth in claim 1 wherein said bridge members are structurally weakened subsequent to applying the cap closure to the threads on the outside surface of the mouth-defining wall of said rigid container and subsequent to circumferentially indenting the margin of the lower extension beneath the shoulder encircling the mouth-defining wall of the container below the threaded portion for securement thereon.
Claim 4
Dependent Claim
69 words
In combination with a rigid container, the cap closure set forth in claim 1 wherein said bridge members are structurally weakened subsequent to applying the cap closure to the threads on the outside surface of the mouth-defining wall of said container and coincidentally to circumferentially indenting the margin of the lower extension beneath the shoulder encircling the mouth-defining wall of the container below the threaded portion for securement thereon.
Claim 5
Dependent Claim
48 words
The cap closure set forth in claim 1 wherein each of said narrow bridge members is shaped substantially in a channellike configuration having parallel flange portions radially projecting outwardly of the surface of the skirt and the surface of the lower extension and interconnected by a web portion.
Claim 6
Dependent Claim
45 words
The cap closure set forth in claim 1 wherein each of said narrow bridge members is shaped substantially in a semicircular configuration having the bight of the curved bridge member projecting outwardly of the surface of the skirt and the surface of the lower extension.
Claim 7
Dependent Claim
36 words
The cap closure set forth in claim 1 wherein said narrow bridge members are horizontally scored subsequent to applying the cap closure to the threads on the outside surface of the mouth-defining wall of the container.
Claim 8
Dependent Claim
47 words
The cap closure as set forth in claim 1 wherein a portion of the material of each of the said narrow bridge members is removed by filing subsequent to applying the cap closure to the threads on the outside surface of the mouth-defining wall of the container.
Claim 9
Dependent Claim
49 words
The cap closure as set forth in claim 1 wherein a portion of the material of each of the said narrow bridge members is removed by a cutting operation subsequent to applying the cap closure to the threads on the outside surface of the mouth-defining wall of the container.
Claim 10
Dependent Claim
42 words
The cap closure set forth in claim 1 wherein a portion of the material of each of said bridge members is upset subsequent to applying the cap closure to the threads on the outside surface of the mouth-defining wall of the container.
References Cited (Backward Citations)
US3303955A
Cited
US3465907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |