Patent US4282982A successfully refreshed from Google Patents.
US4282982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube closure device
Assignee: Individual
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Filing: 1980-03-11
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Granted: 1981-08-11
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Expires: 2000-03-11
Abstract
Abstract A closure device which seals against the internal circumferential surface of a tube by an O-ring seal between a plug member and the circumferential surface and the plug being held in the tube by a plurality of segmented members that are positioned around the plug and pressed against the O-ring seal and the internal circumference of the tube by means on the plug that forces the segments into contact with the O-ring seal and the internal circumference of the tube.
Inventors
- 👤 Alfred Nuesslein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:27
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/136
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
A tube closure device comprising a closure assembly including a central member with an outer frusta-conical means, a plurality of arcuate segments positioned around a portion of said frusta-conical means, an O-ring seal in contact with a portion of said frusta-conical means and an end of each of said arcuate segments being in contact with said O-ring seal, adjustable means on said central member for applying force to said arcuate segments to cause said segments to be moved axially and radially on said frusta-conical means and cause said O-ring to move axially and radially and a belleville spring mounted on said central member between said adjustable means and said arcuate segments, and said adjustable means including a threaded portion on said central member and a nut threaded on said threaded portion.
Claim 2
Dependent Claim
131 words
A tube closure device comprising a closure assembly including a central member with an outer frusta-conical means, a plurality of arcuate segments positioned around a portion of said frusta-conical means, an O-ring seal in contact with a portion of said frusta-conical means and an end of each of said arcuate segments being in contact with said O-ring seal, adjustable means on said central member for applying force to said arcuate segments to cause said segments to be moved axially and radially on said frusta-conical means and cause said O-ring to move axially and radially and a belleville spring mounted on said central member between said adjustable means and said arcuate segments, and said adjustable means including a threaded portion on said central member and a nut threaded on said threaded portion.
Claim 3
Dependent Claim
18 words
A tube closure device as set forth in claim 1, wherein said central member has a passage therethrough.
Claim 4
Dependent Claim
55 words
A tube closure device as set forth in claim 1, wherein said closure assembly is mounted in a tube device that has an internal circumferential surface and said O-ring seals against said internal circumferential surface and said arcuate segments make contact with said internal circumferential surface to hold said closure assembly in said tube device.
Claim 5
Dependent Claim
30 words
A tube closure device as set forth in claim 3, wherein said arcuate segments have snap ring means there about to hold the arcuate segments in a generally circular arrangement.
Claim 6
Dependent Claim
21 words
A tube closure device as set forth in claim 3, wherein said central member has a streamlined nozzle type passage therethrough.
References Cited (Backward Citations)
US2974685A
Cited
US3613936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |