US3778090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beaded tube with o-ring seal connection
Assignee: Motors Liquidation Co
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Filing: 1972-05-18
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Granted: 1973-12-11
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Expires: 1992-05-18
Abstract
Abstract A beaded tube with O-ring seal connection wherein a relative thin walled tube extending through a counterbored aperture in a tube block is upset to provide annular beads on opposite sides of the tube block to lock the tube to the tube block, an O-ring being positioned to encircle the tube in sealing engagement with a bead surface of the tube and with the walls of the counterbore in the tube block.
Inventors
- 👤 M Tobin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:29
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/14; F16L13/16; F16L13/166; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
260 words
A fluid-tight tube joint assembly comprising a tube block having opposed first and second side walls and having at least one circular stepped opening therethrough, said opening being defined by a cylindrical walled counterbored portion extending from said first side wall and terminating in an inward extending radial wall and by a cylindrical wall portion of reduced diameter extending from said second side wall to said radial wall, said cylindrical wall portion of reduced diameter having axial extending splines therein, and a tube extending through said opening with the free end of said tube positioned closely adjacent to and extending from said first side wall, a ring seal encircling said tube and positioned to engage against said inward extending radial wall and said cylindrical walled counterbored portion, said tube having a first external annular bead positioned within said cylindrical walled counterbored portion with a surface of said first bead abutting against said ring seal and with its outer peripheral surface in engagement with said cylindrical walled counterbored portion to form with said inward extending radial wall and said cylindrical walled counterbored portion an enclosed seal ring cavity for said ring seal with said ring seal compressed therein, and a second external annular bead in abutment against said second side wall and, said tube having an intermediate portion between said first and said second annular beads of a diameter such that said intermediate portion is engaged against saiD cylindrical wall portion of reduced diameter and is engaged in said splines to prevent rotation of said tube relative to said tube block.
Claim 2
Dependent Claim
260 words
A fluid-tight tube joint assembly comprising a tube block having opposed first and second side walls and having at least one circular stepped opening therethrough, said opening being defined by a cylindrical walled counterbored portion extending from said first side wall and terminating in an inward extending radial wall and by a cylindrical wall portion of reduced diameter extending from said second side wall to said radial wall, said cylindrical wall portion of reduced diameter having axial extending splines therein, and a tube extending through said opening with the free end of said tube positioned closely adjacent to and extending from said first side wall, a ring seal encircling said tube and positioned to engage against said inward extending radial wall and said cylindrical walled counterbored portion, said tube having a first external annular bead positioned within said cylindrical walled counterbored portion with a surface of said first bead abutting against said ring seal and with its outer peripheral surface in engagement with said cylindrical walled counterbored portion to form with said inward extending radial wall and said cylindrical walled counterbored portion an enclosed seal ring cavity for said ring seal with said ring seal compressed therein, and a second external annular bead in abutment against said second side wall and, said tube having an intermediate portion between said first and said second annular beads of a diameter such that said intermediate portion is engaged against saiD cylindrical wall portion of reduced diameter and is engaged in said splines to prevent rotation of said tube relative to said tube block.
Claim 3
Dependent Claim
185 words
A fluid-tight tube joint assembly comprising a tube block having opposed first and second side walls and having at least one circular stepped opening therethrough, said opening being defined by a first cylindrical wall portion extending from said first side wall and terminating at an inward extending radial wall and by a second cylindrical wall portion of reduced diameter extending from said second side wall to said radial wall, said second cylindrical wall portion having axial extending splines therein, a tube extending through said opening, said tube having an external annular bead positioned within said first cylindrical wall portion with the outer periphery of said annular bead in engagement with said first cylindrical wall portion, said bead having a radial wall portion forming with a portion of said first cylindrical wall portion and said radial wall an enclosed seal ring cavity, said tube having an enlarged cylindrical portion adjacent said bead and extending to said second side wall in engagement against said second cylindrical wall portion and engaged in said splines and, an O-ring seal encircling said tube and compressed within said seal ring cavity.
Claim 4
Dependent Claim
185 words
A fluid-tight tube joint assembly comprising a tube block having opposed first and second side walls and having at least one circular stepped opening therethrough, said opening being defined by a first cylindrical wall portion extending from said first side wall and terminating at an inward extending radial wall and by a second cylindrical wall portion of reduced diameter extending from said second side wall to said radial wall, said second cylindrical wall portion having axial extending splines therein, a tube extending through said opening, said tube having an external annular bead positioned within said first cylindrical wall portion with the outer periphery of said annular bead in engagement with said first cylindrical wall portion, said bead having a radial wall portion forming with a portion of said first cylindrical wall portion and said radial wall an enclosed seal ring cavity, said tube having an enlarged cylindrical portion adjacent said bead and extending to said second side wall in engagement against said second cylindrical wall portion and engaged in said splines and, an O-ring seal encircling said tube and compressed within said seal ring cavity.
Claim 5
Dependent Claim
29 words
A fluid-tight tube joint assembly according to claim 2 wherein said tube includes a second external annular bead in abutment against said second side wall of said tube block.
Claim 6
Dependent Claim
142 words
In combination, a tube block comprising block means with a first surface portion and a second surface portion on opposite sides thereof, a first bore in said block means extending from said first surface, a partly splined bore of reduced diameter in said block means extending from said second surface and meeting coaxially with said first bore with an intervening shoulder therebetween, a tube extending through said partly splined bore and said first bore, said tube having an external annular bead positioned in said first bore to form therewith and with said intervening shoulder an enclosed seal ring cavity, and an enlarged cylindrical portion adjacent said annular bead and extending in said partly splined bore in an interference fit therewith to said second surface and, an O-ring seal encircling said enlarged cylindrical portion of said tube within said enclosed seal ring cavity.
Claim 7
Dependent Claim
142 words
In combination, a tube block comprising block means with a first surface portion and a second surface portion on opposite sides thereof, a first bore in said block means extending from said first surface, a partly splined bore of reduced diameter in said block means extending from said second surface and meeting coaxially with said first bore with an intervening shoulder therebetween, a tube extending through said partly splined bore and said first bore, said tube having an external annular bead positioned in said first bore to form therewith and with said intervening shoulder an enclosed seal ring cavity, and an enlarged cylindrical portion adjacent said annular bead and extending in said partly splined bore in an interference fit therewith to said second surface and, an O-ring seal encircling said enlarged cylindrical portion of said tube within said enclosed seal ring cavity.
Claim 8
Dependent Claim
32 words
The combination of claim 4 wherein said tube further includes a second external annular bead externally of said block means in abutment against the said second surface portion of said block means.
References Cited (Backward Citations)
IT455785A
Cited
US779896A
Cited
US2179248A
Cited
US2165621A
Cited
US2268142A
Cited
US2450581A
Cited
US2551871A
Cited
US2779279A
Cited
US3326006A
Cited
BE683803A
Cited
DE1801294A1
Cited
US3589752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |