US3782578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opener for disposable closure
Assignee: Individual
•
Filing: 1972-04-28
•
Granted: 1974-01-01
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Expires: 1992-04-28
Abstract
Abstract A device for opening a closure cap along a score line around the base of an annular channel without piercing the cap includes a collar which rotatably and slidably engages the cap and includes a peripheral wall provided with circumferentially spaced depending arcuate teeth of greater thickness than the channel and stop elements which limit the downward movement of the device on the cap. The device is pressed downwardly and rotated so that the teeth wedge between and spread the channel walls to sever the closure along the full length of the score line, the piercing of the channel by the teeth being prevented by the stop elements.
Inventors
- 👤 G Ballin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:05
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/06; B65D47/10; B65D47/106
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
128 words
An opening device for a closure member provided with a rupturable seal along an annular channel having upwardly directed side webs comprising a body member having a bore and a tooth depending from said body member and spaced from the center of said bore a distance equal to the radius of said annular channel and having a thickness greater than the face-to-face distance between said side webs, said body member having a downwardly facing stop section adapted to engage a face of said closure member to prevent the vertical movement of said tooth below the level of the bottom of said channel, the depression of said body member wedging said tooth between said webs to spread said webs and rupture said seal in the area of said tooth.
Claim 2
Dependent Claim
128 words
An opening device for a closure member provided with a rupturable seal along an annular channel having upwardly directed side webs comprising a body member having a bore and a tooth depending from said body member and spaced from the center of said bore a distance equal to the radius of said annular channel and having a thickness greater than the face-to-face distance between said side webs, said body member having a downwardly facing stop section adapted to engage a face of said closure member to prevent the vertical movement of said tooth below the level of the bottom of said channel, the depression of said body member wedging said tooth between said webs to spread said webs and rupture said seal in the area of said tooth.
Claim 3
Dependent Claim
34 words
The device of claim 1 wherein said closure member includes a circular cap section extending above said channel and said body member comprises a collar adapted to rotatably and slidably engage said cap section.
Claim 4
Dependent Claim
42 words
The device of claim 2 wherein said body member includes a lower wall integrally formed with and extending outwardly from the bottom edge of said collar and a plurality of circumferentially spaced teeth integrally formed with and depending from said lower wall.
Claim 5
Dependent Claim
14 words
The device of claim 3 wherein said tooth is of arcuate transverse cross section.
Claim 6
Dependent Claim
13 words
The device of claim 2 wherein said lower wall is of conical configuration.
Claim 7
Dependent Claim
64 words
The device of claim 3 wherein said closure member includes an upwardly directed annular ridge coaxial with and of greater diameter than said cap and said stop section depends from said lower wall, the distance between the levels of the underface of said tooth and stop section being approximately equal to that between the top of said ridge and the bottom of said channel.
Claim 8
Dependent Claim
17 words
The device of claim 6 wherein said stop section comprises a plurality of circumferentially spaced depending fingers.
Claim 9
Dependent Claim
16 words
The device of claim 7 wherein said fingers are circumferentially and radially spaced from said teeth.
Claim 10
Dependent Claim
25 words
The device of claim 3 including a coaxial skirt wall depending from and integrally formed with said lower wall and spaced outwardly of said teeth.
Claim 11
Dependent Claim
18 words
The device of claim 3 wherein a peripheral section of said lower wall proximate said collar is flexible.
Claim 12
Dependent Claim
48 words
The device of claim 10 wherein said bottom edge of said collar rests on said closure member and said flexible section is intermediate of said bottom edge of said collar and said teeth depending from said wall, whereby said lower wall can be flexed to depress said teeth.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |