US3831983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plumbing connection
Assignee: Individual
•
Filing: 1973-07-20
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Granted: 1974-08-27
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Expires: 1993-07-20
Abstract
Abstract A plumbing connection wherein preformed tubes of a selected range of diameters cooperate with a connecting member having a passage of standard diameter. The tubes of all sizes in the selected range have tapered ends, each of whose outer small diameter portions is receivable in said passage and whose innermost large diameter portion is of a diameter greater than the diameter of the passage. Each tube carries slip nuts for pressing said tapered tube ends into circumferential sealing engagement with a connecting member when abutting the large end of a tapered tube portion and screw threaded on said connecting member.
Inventors
- 👤 C Stickler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:21
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/02; F16L19/025; F16L41/00; F16L41/02; F16L41/021
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
266 words
A plumbing connection between a tube and a connected member such as a fitting or a fixture, comprising a preformed tube having an enlarged end portion and a slip nut encircling said tube, a connected member having a substantially uniform passage therethrough and externally screw threaded neck portions at each end of said passage, said neck portions being of the same diameter, said tube being selected from a group of tubes of diameters within a selected range, the enlarged end portion of each tube of said group being tapered and having a terminal portion of a diameter less than the diameter of the passage of said connected member and a large inner portion of a diameter greater than the diameter of the passage of said connected member, whereby all tubes of said group are adapted for wedged fit in an end of a passage of said connected member, the enlarged end portion of each tube having a circumferential inner shoulder, said slip nut having an apertured end wall abutting said tube shoulder and having an open end projecting beyond the enlarged portion of the tube when its end wall abuts said shoulder, the slip nuts of the small tubes of said group being adapted to be threaded on a neck of said connecting member to advance the tapered portion of the associated tuBe into wedged sealed circumferential engagement with said connecting member at the end of a passage, and means for adapting connection of the slip nut of the largest tube to maintain sealed circumferential engagement of its tapered portion with the end of a passage.
Claim 2
Dependent Claim
266 words
A plumbing connection between a tube and a connected member such as a fitting or a fixture, comprising a preformed tube having an enlarged end portion and a slip nut encircling said tube, a connected member having a substantially uniform passage therethrough and externally screw threaded neck portions at each end of said passage, said neck portions being of the same diameter, said tube being selected from a group of tubes of diameters within a selected range, the enlarged end portion of each tube of said group being tapered and having a terminal portion of a diameter less than the diameter of the passage of said connected member and a large inner portion of a diameter greater than the diameter of the passage of said connected member, whereby all tubes of said group are adapted for wedged fit in an end of a passage of said connected member, the enlarged end portion of each tube having a circumferential inner shoulder, said slip nut having an apertured end wall abutting said tube shoulder and having an open end projecting beyond the enlarged portion of the tube when its end wall abuts said shoulder, the slip nuts of the small tubes of said group being adapted to be threaded on a neck of said connecting member to advance the tapered portion of the associated tuBe into wedged sealed circumferential engagement with said connecting member at the end of a passage, and means for adapting connection of the slip nut of the largest tube to maintain sealed circumferential engagement of its tapered portion with the end of a passage.
Claim 3
Dependent Claim
62 words
A plumbing connection as defined in claim 1, wherein the large diameter end of the tapered portion of the largest tube is larger than the outer diameter of the threaded neck of the fitting to which it is connected, and said adapting means comprises an annulus interiorly threaded upon said neck and exteriorly threaded into the slip nut of said largest tube.
Claim 4
Dependent Claim
35 words
A plumbing connection as defined in claim 1, wherein said tubes and the enlarged end portions thereof are formed of flexible thermoplastic material capable of withstanding liquid at temperatures in the order of 180* F.
Claim 5
Dependent Claim
18 words
A plumbing connection as defined in claim 1 wherein each tube and its enlarged end portion is integral.
Claim 6
Dependent Claim
30 words
A plumbing connection as defined in claim 1 wherein each passage of said connecting member terminates in a tapered enlarged portion for receiving the tapered end portion of a tube.
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |