US4809858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite closure cap with removal torque control
Assignee: Anchor Hocking Packaging Co
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Filing: 1987-10-19
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Granted: 1989-03-07
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Expires: 2007-10-19
Abstract
Abstract A composite closure cap is described comprising a molded plastic ring and a separate disc-like cover. The cover includes a gasket for sealing. Tapered friction surfaces on the plastic ring and on the cover interact to provide for the control of the closure cap removal torque.
Inventors
- 👤 Charles S. Ochs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:53
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/14; B65D51/145
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
A composite closure cap for sealing a container comprising the combination of a molded plastic ring and a separate closure cover contained in said plastic ring, said container having a top sealing surface at its rim, and said cover having a sealing means adapted to form a seal with said top sealing surface and a flat flared torque control surface for engaging a complementary flared torque control surface on said plastic ring, said control surfaces forming an acute angle with the vertical.
Claim 2
Dependent Claim
82 words
A composite closure cap for sealing a container comprising the combination of a molded plastic ring and a separate closure cover contained in said plastic ring, said container having a top sealing surface at its rim, and said cover having a sealing means adapted to form a seal with said top sealing surface and a flat flared torque control surface for engaging a complementary flared torque control surface on said plastic ring, said control surfaces forming an acute angle with the vertical.
Claim 3
Dependent Claim
83 words
A composite closure cap for sealing a container comprising the combination of a molded plastic ring and a separate closure cover contained in said plastic ring, said container having a top sealing surface at its rim, and said cover having a sealing means adapted to form a seal with said top sealing surface and a flared torque control surface for engaging a complementary flared torque control surface on said plastic ring, and at least one of said flared torque control surfaces being roughened.
Claim 4
Dependent Claim
83 words
A composite closure cap for sealing a container comprising the combination of a molded plastic ring and a separate closure cover contained in said plastic ring, said container having a top sealing surface at its rim, and said cover having a sealing means adapted to form a seal with said top sealing surface and a flared torque control surface for engaging a complementary flared torque control surface on said plastic ring, and at least one of said flared torque control surfaces being roughened.
Claim 5
Dependent Claim
33 words
The closure cap as claimed in claim 2 which further comprises lift means for engaging said cover flange positioned on said plastic ring and spaced downwardly from the lower edge of said flange.
Claim 6
Dependent Claim
24 words
The closure cap as claimed in claim 3 in which said lift means comprises a radially inwardly directed circular bead on said plastic ring.
Claim 7
Dependent Claim
80 words
A composite closure cap for sealing a container comprising the combination of a molded plastic ring and a separate closure cover contained in said plastic ring, said container having a top sealing surface at its rim, and said cover having a sealing means adapted to form a seal with said top sealing surface and a flared torque control surface for engaging a complementary flared torque control surface on said plastic ring, and said flared torque control surfaces have roughened surfaces.
Claim 8
Dependent Claim
80 words
A composite closure cap for sealing a container comprising the combination of a molded plastic ring and a separate closure cover contained in said plastic ring, said container having a top sealing surface at its rim, and said cover having a sealing means adapted to form a seal with said top sealing surface and a flared torque control surface for engaging a complementary flared torque control surface on said plastic ring, and said flared torque control surfaces have roughened surfaces.
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) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |