US3814276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-proof closure assembly
Assignee: Arkema Inc
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Filing: 1972-08-14
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Granted: 1974-06-04
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Expires: 1992-08-14
Abstract
Abstract The tendency of threaded closures for metal containers employing metal caps or plugs to become inoperative as a result of corrosion or excessive wearing away of the threads is significantly reduced by employing a hollow, non-metallic member that is removably engaged with both the perimeter of the container aperture and the cap or plug. A metallic cover forms part of the closure assembly and conceals all non-metallic members, thereby conforming to the requirement for a container exhibiting a completely metallic exterior surface.
Inventors
- 👤 Gordon D Van
- 👤 Nally P Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:36
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/02; B65D41/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
192 words
An improved container closure assembly wherein all exterior surfaces of the container are metallic and wherein no two moveably engaged surfaces exposed to the contents of the container are both metallic, said closure assembly being comprised of: 1. a substantially circular passage through the wall of the container and communicating between the interior and exterior of the container, the passage being defined by: a. a metallic tube securEd at the perimeter of an aperture in the wall of the container, and b. a non-metallic tube wherein at least a portion of the outer wall adjacent to one end of the non-metallic tube is removably engaged with at least a portion of the inner wall of the metallic tube 2. a plug removably engaged with at least a portion of the inner wall adjacent to one end of the non-metallic tube, thereby sealing said substantially circular passage and preventing communication between the interior and exterior of the container 3. a hollow metallic cap removably engaged with the outer wall of the metallic tube, thereby enclosing all non-metallic elements of the container closure, such that all exposed exterior surfaces of the container are metallic.
Claim 2
Dependent Claim
192 words
An improved container closure assembly wherein all exterior surfaces of the container are metallic and wherein no two moveably engaged surfaces exposed to the contents of the container are both metallic, said closure assembly being comprised of: 1. a substantially circular passage through the wall of the container and communicating between the interior and exterior of the container, the passage being defined by: a. a metallic tube securEd at the perimeter of an aperture in the wall of the container, and b. a non-metallic tube wherein at least a portion of the outer wall adjacent to one end of the non-metallic tube is removably engaged with at least a portion of the inner wall of the metallic tube 2. a plug removably engaged with at least a portion of the inner wall adjacent to one end of the non-metallic tube, thereby sealing said substantially circular passage and preventing communication between the interior and exterior of the container 3. a hollow metallic cap removably engaged with the outer wall of the metallic tube, thereby enclosing all non-metallic elements of the container closure, such that all exposed exterior surfaces of the container are metallic.
Claim 3
Dependent Claim
38 words
a plug removably engaged with at least a portion of the inner wall adjacent to one end of the non-metallic tube, thereby sealing said substantially circular passage and preventing communication between the interior and exterior of the container
Claim 4
Dependent Claim
38 words
a plug removably engaged with at least a portion of the inner wall adjacent to one end of the non-metallic tube, thereby sealing said substantially circular passage and preventing communication between the interior and exterior of the container
Claim 5
Dependent Claim
21 words
The improved container closure assembly of claim 1 wherein the container and all metallic elements of the closure assembly are steel.
Claim 6
Dependent Claim
39 words
The improved container closure assembly of claim 1 wherein the material of the non-metallic tube is selected from the group consisting of polyamides, vinyl polymers, polyolefins, polycarbonates, epoxide and phenol-aldehyde polymers, natural and synthetic hard rubber, ceramics and glass.
Claim 7
Dependent Claim
34 words
a hollow metallic cap removably engaged with the outer wall of the metallic tube, thereby enclosing all non-metallic elements of the container closure, such that all exposed exterior surfaces of the container are metallic.
Claim 8
Dependent Claim
34 words
a hollow metallic cap removably engaged with the outer wall of the metallic tube, thereby enclosing all non-metallic elements of the container closure, such that all exposed exterior surfaces of the container are metallic.
Claim 9
Dependent Claim
30 words
The improved container closure assembly of claim 1 wherein the metal tube is removably engaged with the hollow metal cap and the non-metallic tube by means of a metal bushing.
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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |