Patent US5368480A successfully refreshed from Google Patents.
US3909045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubing joint for adhesive bonding
Assignee: Trane US Inc
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Filing: 1974-10-10
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Granted: 1975-09-30
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Expires: 1994-10-10
Abstract
Abstract A tube joint configuration for use with adhesive that includes a female member having a retaining area and a male member having a piston means for applying pressure to the adhesive during telescoping of the members to hydraulically force the adhesive into the retaining area to eliminate voids and provide a leaktight joint. The female member is provided with axially spaced flanges at each end of the retaining area that are adapted to be engaged when the members are fully telescoped by a mating surface on the free end of the male member and by the piston means to seal the void-free adhesive in the retaining area.
Inventors
- 👤 George L Meagher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:17
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/10; F16L13/11; Y; Y10; Y10S; Y10S285/00; Y10S285/915; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
177 words
A tube joint comprising a first tube having an end portion receiving an adhesive coated end portion of a second tube with radial clearance between contiguous sealing surfaces of the two tubes providing a retaining area for said adhesive: a first annular outwardly projecting flange on said first tube providing an enlarged cross-sectional area forming one of said sealing surfaces, and a second annular flange projecting outwardly relative to said first flange and spaced axially from said first flange providing a second enlarged cross-sectional area forming a guide surface; guide means on said second tube end portion projecting radially outwardly into said second enlarged cross-sectional area engaging and forcing said adhesive into said retaining area during telescoping of said members to eliminate voids in said adhesive, said guide means being in direct sealing engagement with said second flange thereby sealing one end of said retaining area; and mating means on the free end of said second tube end portion being in direct sealing engagement with said first flange thereby Sealing the other end of said retaining area.
Claim 2
Dependent Claim
177 words
A tube joint comprising a first tube having an end portion receiving an adhesive coated end portion of a second tube with radial clearance between contiguous sealing surfaces of the two tubes providing a retaining area for said adhesive: a first annular outwardly projecting flange on said first tube providing an enlarged cross-sectional area forming one of said sealing surfaces, and a second annular flange projecting outwardly relative to said first flange and spaced axially from said first flange providing a second enlarged cross-sectional area forming a guide surface; guide means on said second tube end portion projecting radially outwardly into said second enlarged cross-sectional area engaging and forcing said adhesive into said retaining area during telescoping of said members to eliminate voids in said adhesive, said guide means being in direct sealing engagement with said second flange thereby sealing one end of said retaining area; and mating means on the free end of said second tube end portion being in direct sealing engagement with said first flange thereby Sealing the other end of said retaining area.
Claim 3
Dependent Claim
40 words
The invention set forth in claim 1 wherein the radial clearance between said guide means on said guide surface is greater than the radial clearance between said sealing surface so that the adhesive is hydraulically forced into said retaining area.
Claim 4
Dependent Claim
33 words
The invention as set forth in claim 2 wherein the volume of adhesive is sufficient to allow adhesive to escape past said guide means as said mating means seals against said first flange.
References Cited (Backward Citations)
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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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |