Patent US5078713A successfully refreshed from Google Patents.
Patent US3976314A successfully refreshed from Google Patents.
US3976314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube coupler
Assignee: Individual
•
Filing: 1975-01-03
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Granted: 1976-08-24
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Expires: 1995-01-03
Abstract
Abstract A coupler or fitting for connecting ductile tubes or pipes includes a coupler body having one or more ports therein, and a ferrule which is friction-fitted within each port, the ferrule having a radially-inward flaring lip for biting into and locking a tube inserted therein and for creating a seal between the tube and the body, and a radially-outward flaring lip for biting into and locking the ferrule within the body.
Inventors
- 👤 Charles H. Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:34
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/26; F16L47/32; F16L33/00; F16L33/32; Y; Y10; Y10S; Y10S285/00; Y10S285/915
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
A coupler for a ductile tube comprising: a. a body having at least two generally cylindrical ports therein; b. a generally cylindrically-shaped thin-walled ferrule, said ferrule having a substantially uniform wall thickness throughout the entire length thereof and insertable within at least one port of said body, the outside surface of said ferrule forming a snug, friction fit with the port wall to sealingly engage the port wall; c. said ferrule having a single radially-inward flaring continuous circumferential lip at the inner extremity thereof, and a radially-outward flaring continuous circumferential lip at the outer extremity thereof; d. said radially-outward flaring lip biting into the port wall when inserted therein to retain it in place and prevent dislocation therefrom; and e. said radially-inward flaring lip biting into the exterior surface of the tube when inserted therein, said lip locking the tube within said body and providing a fluid seal between the tube and said body.
Claim 2
Dependent Claim
154 words
A coupler for a ductile tube comprising: a. a body having at least two generally cylindrical ports therein; b. a generally cylindrically-shaped thin-walled ferrule, said ferrule having a substantially uniform wall thickness throughout the entire length thereof and insertable within at least one port of said body, the outside surface of said ferrule forming a snug, friction fit with the port wall to sealingly engage the port wall; c. said ferrule having a single radially-inward flaring continuous circumferential lip at the inner extremity thereof, and a radially-outward flaring continuous circumferential lip at the outer extremity thereof; d. said radially-outward flaring lip biting into the port wall when inserted therein to retain it in place and prevent dislocation therefrom; and e. said radially-inward flaring lip biting into the exterior surface of the tube when inserted therein, said lip locking the tube within said body and providing a fluid seal between the tube and said body.
Claim 3
Dependent Claim
23 words
A coupler as in claim 1 including first means for preventing the tube from being inserted beyond a predetermined point within said port.
Claim 4
Dependent Claim
18 words
A coupler as in claim 2 wherein said first means comprises said port having a reduced diameter section.
Claim 5
Dependent Claim
23 words
A coupler as in claim 1 including second means for preventing said ferrule from being inserted beyond a predetermined point with said bore.
Claim 6
Dependent Claim
37 words
A coupler as in claim 4 wherein said second means comprises an annular portion having a larger diameter than the remainder of said port at the outer end of said port, said radially-outward flaring lip fitting therein.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |