Patent US4647880A successfully refreshed from Google Patents.
Patent US3746376A successfully refreshed from Google Patents.
US3746376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid tight conduit fastening system
Assignee: Individual
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Filing: 1971-03-16
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Granted: 1973-07-17
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Expires: 1991-03-16
Abstract
Abstract This invention provides a fluid tight conduit union that utilizes a two piece coupling mechanism such as a screw and nut. The coupling mechanism clamps a separate seat insert which is attached to a member of the union assembly by a simple latching mechanism. The latching mechanism maintains positive attachment of the seat insert to a member of the union assembly when the coupling halves are separated.
Inventors
- 👤 H Gold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:40
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/08; F16L19/10; F16L19/04; F16L19/048; Y; Y10; Y10S; Y10S285/00; Y10S285/921
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
350 words
A fluid tight conduit fastening system comprising: a. a sealing assembly comprising a first conduit having a flanged end, a seat member, a second conduit having a flanged end, a first coupling member adapted to engage said first flanged end and a second coupling member adapted to engage said second flanged end, said seat member having coaxial end faces, one of said end faces mating in sealing relationship with the sealing face of said first flanged end and the other of said end faces mating in sealing relationship with the sealing face of said second flanged end, said coupling means being mutually adapted to clamp said seat member between said flanged ends; b. said seat member being a cylinder coaxial with the axis of said end faces, said cylinder having a coaxial cylindrical groove spaced between said end faces by cylindrical lands; c. said first coupling member being a screw member, said second coupling member being a nut member, said screw member having a coaxial tubular portion extending forward of the threads of said member, the bore of said tubular portion extending in said screw member and joining a smaller coaxial bore therein, the shoulder formed at the junction of said bores being adapted to engage said first flange end, a pair of diametrally opposite inward indentations being in the wall of said tubular portion, said indentations projecting into said cylindrical groove in said seat member to attach said seat member to said screw member; d. the diametral distance between the innermost points of said indentations being less than the diameter of said lands but greater than the diaMeter of said groove, the diametral clearance between said lands and said bore of said tubular portion being sufficient to allow said tubular projection to ovalize when said indentations engage said lands thereby permitting the insertion of said seat member into said bore through the application of an axial force between said seat member and the screw member, and the width of said groove being greater than the width of said indentations, lateral and axial play being thereby provided in said attachment.
Claim 2
Dependent Claim
350 words
A fluid tight conduit fastening system comprising: a. a sealing assembly comprising a first conduit having a flanged end, a seat member, a second conduit having a flanged end, a first coupling member adapted to engage said first flanged end and a second coupling member adapted to engage said second flanged end, said seat member having coaxial end faces, one of said end faces mating in sealing relationship with the sealing face of said first flanged end and the other of said end faces mating in sealing relationship with the sealing face of said second flanged end, said coupling means being mutually adapted to clamp said seat member between said flanged ends; b. said seat member being a cylinder coaxial with the axis of said end faces, said cylinder having a coaxial cylindrical groove spaced between said end faces by cylindrical lands; c. said first coupling member being a screw member, said second coupling member being a nut member, said screw member having a coaxial tubular portion extending forward of the threads of said member, the bore of said tubular portion extending in said screw member and joining a smaller coaxial bore therein, the shoulder formed at the junction of said bores being adapted to engage said first flange end, a pair of diametrally opposite inward indentations being in the wall of said tubular portion, said indentations projecting into said cylindrical groove in said seat member to attach said seat member to said screw member; d. the diametral distance between the innermost points of said indentations being less than the diameter of said lands but greater than the diaMeter of said groove, the diametral clearance between said lands and said bore of said tubular portion being sufficient to allow said tubular projection to ovalize when said indentations engage said lands thereby permitting the insertion of said seat member into said bore through the application of an axial force between said seat member and the screw member, and the width of said groove being greater than the width of said indentations, lateral and axial play being thereby provided in said attachment.
Claim 3
Dependent Claim
23 words
In the system of claim 1, the ends of said conduits being flared, said flange members being thereby made integral with said conduits.
Claim 4
Dependent Claim
16 words
In the sytem of claim 1, said end faces of said seat member being convex conical.
Claim 5
Dependent Claim
14 words
In the system of claim 1, said seat member having a coaxial bore therethrough.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |