Patent US4197955A successfully refreshed from Google Patents.
US4197955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper-proof closure
Assignee: Crown Cork and Seal Co Inc
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Filing: 1978-10-26
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Granted: 1980-04-15
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Expires: 1998-10-26
Abstract
Abstract A tamper-proof package having a container and closure is disclosed. The container has a threaded neck and an outwardly projecting flange beneath the container threads. The cap has a top wall and a downwardly depending sidewall with the sidewall having inwardly projecting, helical threads for cooperation with the container threads. Provided as part of the cap is an annular cap flange which is disposed beneath the cap sidewall and adapted for connection to the container flange. Holding the annular cap flange to the cap body is achieved by the utilization of a plurality of elongated connecting ribs. These connecting ribs extend downward from the cap sidewall to the cap flange and have a direction of slope opposite the direction of the helix angle of the cap helical thread.
Inventors
- 👤 Werner R. Luenser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:26
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/34; B65D41/3495
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
115 words
A thermoplastic, tamper-proof cap for fitment to a thermoplastic container having a threaded neck and an outwardly projecting flange beneath the container thread, the cap comprising: a. a top wall; b. a downwardly extending sidewall, said sidewall having an inwardly projecting helical thread for cooperation with said container threads; and c. an annular cap flange disposed beneath said cap sidewall and adapted for connection to said container flange, said cap flange being connected to said cap by way of a plurality of elongated connecting ribs, said ribs extending downward from said cap sidewall to said cap flange and having a direction of slope opposite the direction of the helix angle of said cap helical thread.
Claim 2
Dependent Claim
115 words
A thermoplastic, tamper-proof cap for fitment to a thermoplastic container having a threaded neck and an outwardly projecting flange beneath the container thread, the cap comprising: a. a top wall; b. a downwardly extending sidewall, said sidewall having an inwardly projecting helical thread for cooperation with said container threads; and c. an annular cap flange disposed beneath said cap sidewall and adapted for connection to said container flange, said cap flange being connected to said cap by way of a plurality of elongated connecting ribs, said ribs extending downward from said cap sidewall to said cap flange and having a direction of slope opposite the direction of the helix angle of said cap helical thread.
Claim 3
Dependent Claim
22 words
The cap of claim 1 wherein said cap flange has an inside diameter greater than the outside diameter of said cap sidewall.
Claim 4
Dependent Claim
24 words
The cap of claim 2 wherein said ribs have a length "a" within the range of from about 1/16 inch to about 3/8 inch.
Claim 5
Dependent Claim
34 words
The cap of claim 3 wherein said cap and container are made of polyethylene terethphalate and said cap thread is a right-hand thread and said connecting ribs are sloped downwardly in a counter-clockwise direction.
Claim 6
Dependent Claim
24 words
The cap of claim 1 wherein said ribs have a length "a" within the range of from about 1/16 inch to about 3/8 inch.
Claim 7
Dependent Claim
24 words
The cap of claim 1 wherein the cap thread is a right-hand thread and said connecting ribs are sloped downwardly in a counter-clockwise direction.
Claim 8
Dependent Claim
14 words
The cap of claim 1 wherein said cap and closure are of polyethylene terephthalate.
Claim 9
Dependent Claim
116 words
A tamper-proof package comprising: a. a thermoplastic container having a threaded neck and an outwardly projecting flange beneath the container threads; and b. a thermoplastic cap having: i. a top wall; ii. a downwardly extending sidewall, said sidewall having an inwardly projecting helical thread for cooperation with said container thread; and iii. an annular cap flange disposed beneath said cap sidewall and adapted for connection to said container flange, said cap flange being connected to said cap by way of a plurality of elongated connecting ribs, said ribs extending downward from said cap sidewall to said cap flange and having a direction of slope opposite the direction of the helix angle of said cap helical thread.
Claim 10
Dependent Claim
116 words
A tamper-proof package comprising: a. a thermoplastic container having a threaded neck and an outwardly projecting flange beneath the container threads; and b. a thermoplastic cap having: i. a top wall; ii. a downwardly extending sidewall, said sidewall having an inwardly projecting helical thread for cooperation with said container thread; and iii. an annular cap flange disposed beneath said cap sidewall and adapted for connection to said container flange, said cap flange being connected to said cap by way of a plurality of elongated connecting ribs, said ribs extending downward from said cap sidewall to said cap flange and having a direction of slope opposite the direction of the helix angle of said cap helical thread.
Claim 11
Dependent Claim
22 words
The package of claim 8 wherein said cap flange has an inside diameter greater than the outside diameter of said cap sidewall.
Claim 12
Dependent Claim
24 words
The package of claim 9 wherein said ribs have a length "a" within the range of from about 1/16 inch to about 3/8 inch.
Claim 13
Dependent Claim
24 words
The package of claim 8 wherein said ribs have a length "a" within the range of from about 1/16 inch to about 3/8 inch.
Claim 14
Dependent Claim
24 words
The package of claim 8 wherein the cap thread is a right-hand thread and said connecting ribs are sloped downwardly in a counter-clockwise direction.
Claim 15
Dependent Claim
34 words
The cap of claim 12 wherein said cap and container are made of polyethylene terephthalate and said cap thread is a right-hand thread and said connecting ribs are sloped downwardly in a counter-clockwise direction.
Claim 16
Dependent Claim
14 words
The cap of claim 8 wherein said cap and closure are of polyethylene therephthalate.
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) | 1983-04-15 | 1983-10-15 | 1984-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-15 | 1987-10-15 | 1988-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-15 | 1991-10-15 | 1992-04-15 | $7700.00 | Window Closed / Lapsed |