US3848905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure fitting
Assignee: Chicago Fittings Corp
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Filing: 1972-04-03
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Granted: 1974-11-19
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Expires: 1992-04-03
Abstract
Abstract A fitting particularly adapted for use in fluid transmission systems subjected to very high internal pressures, extreme temperatures, vibration or other severe conditions to couple a fluid conducting member or tube to a coupling body and having a ferrule means snugly received and fixedly positioned upon the member and a sealing means which is snugly received upon a cylindrical portion of the ferrule means and brought adjacent an outwardly extending flange portion of the ferrule means. The ferrule means and sealing means are contained within an annular chamber formed when the coupling body is threadedly engaged by a coupling nut positioned on the member in such a manner that when the coupling nut is tightened, the sealing means is deformed within the annular chamber to completely fill the chamber and form a fluid-tight non-extruding seal. A ferrule means having a plurality of inward protrusions disposed above the circumference of its cylindrical portion or an interferring diameter to prevent accidental movement along the member prior to joining thereto. A method of making a fitting in which a ferrule means is snugly received upon the fluid conducting member, is moved a predetermined axial distance along the member by a setting means and is then joined to the member. A sealing means is placed over a portion of the ferrule means, and is deformed by tightening the coupling nut threadedly joined to the coupling body to fill and seal the annular chamber created by the coupling body and the coupling nut.
Inventors
- 👤 V Hammer
- 👤 C Brozek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:55
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/06; F16L19/061
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
364 words
A fitting for joining a first member to a second member, which has a passageway therein to receive an insertion end and accompanying portion of the first member, comprising: ferrule means having a flange portion extending outwardly from the first member in a direction generally transverse to the axis of the first member and a sleeve portion conformed to the shape of the outer circumference of the first member and extending axially therealong, said flange portion being affixed to said sleeve portion at the end thereof furthermost from the insertion end of the first member, said ferrule means located on the outer surface of the first member, at a predetermined distance in the axial direction from the insertion end of the first member, and joined to the first member in such a fashion as to be fixedly anchored thereto at said predetermined distance from the insertion end of the first member; deformable sealing means positioned about the circumference of the first member between the insertion end thereof and said flange portion of said ferrule means; a coupling nut extending over said sealing means and said flange portion of said ferrule means, said coupling nut having a radially inwardly extending shoulder positioned with said flange portion of said ferrule means between said shoulder and the insertion end of the first member, and said coupling nut having threads formed on the inner circumference thereof Adjacent the insertion end of the first member; threads formed on the external surface of the second member to mesh with said threads formed on said coupling nut; a sealing means engaging structure on the end of the second member through which the first member is inserted, meshing of said threads on said coupling nut and on the second member casuing said sealing means engaging structure to compress said sealing means against said flange portion of said ferrule means to form a fluid tight seal; and a fillet between said sleeve portion and said flange portion to aid in securing proper deformation of said sealing means by directing said sealing means outwardly along said flange portion to bear against the inner surface of said coupling nut to form a stronger radial seal.
Claim 2
Dependent Claim
364 words
A fitting for joining a first member to a second member, which has a passageway therein to receive an insertion end and accompanying portion of the first member, comprising: ferrule means having a flange portion extending outwardly from the first member in a direction generally transverse to the axis of the first member and a sleeve portion conformed to the shape of the outer circumference of the first member and extending axially therealong, said flange portion being affixed to said sleeve portion at the end thereof furthermost from the insertion end of the first member, said ferrule means located on the outer surface of the first member, at a predetermined distance in the axial direction from the insertion end of the first member, and joined to the first member in such a fashion as to be fixedly anchored thereto at said predetermined distance from the insertion end of the first member; deformable sealing means positioned about the circumference of the first member between the insertion end thereof and said flange portion of said ferrule means; a coupling nut extending over said sealing means and said flange portion of said ferrule means, said coupling nut having a radially inwardly extending shoulder positioned with said flange portion of said ferrule means between said shoulder and the insertion end of the first member, and said coupling nut having threads formed on the inner circumference thereof Adjacent the insertion end of the first member; threads formed on the external surface of the second member to mesh with said threads formed on said coupling nut; a sealing means engaging structure on the end of the second member through which the first member is inserted, meshing of said threads on said coupling nut and on the second member casuing said sealing means engaging structure to compress said sealing means against said flange portion of said ferrule means to form a fluid tight seal; and a fillet between said sleeve portion and said flange portion to aid in securing proper deformation of said sealing means by directing said sealing means outwardly along said flange portion to bear against the inner surface of said coupling nut to form a stronger radial seal.
Claim 3
Dependent Claim
74 words
A fitting as claimed in claim 1 and further comprising a gripping flange located on the external surface of the second member to contact the end of said coupling nut when the meshing of said threads has produced a desired amount of compression of said means, thereby preventing said ferrule means from being wholly or partially separated from the first member by excessive force resulting from meshing of said threads beyond a given amount.
Claim 4
Dependent Claim
17 words
A fitting as claimed in claim 1 wherein said ferrule means is brazed to the first member.
Claim 5
Dependent Claim
52 words
A fitting as claimed in claim 1 and further comprising frictional retaining means disposed about the internal circumference of said sleeve portion to prevent accidental movement of said ferrule means along the first member and to maintain said ferrule means at said predetermined distance from the insertion end of the first member.
Claim 6
Dependent Claim
39 words
A fitting as claimed in claim 4 wherein said frictional retaining means comprises a plurality of inwardly extending protrusions formed at the end of said sleeve portion of said ferrule means adjacent the insertion end of the first member.
Claim 7
Dependent Claim
30 words
A fitting as claimed in claim 4 wherein said frictional retaining means comprises a plurality of threads disposed about the internal circumference of said sleeve portion of said ferrule means.
Claim 8
Dependent Claim
24 words
A fitting as claimed in claim 1 wherein said sealing means engaging structure is a frusto-conical mouth on the end of the second member.
Claim 9
Dependent Claim
53 words
A fitting as claimed in claim 1 wherein said ferrule means is discontinuous at a point on its circumference and is formed with an interior diameter slightly less than the exterior diameter of the first member, such that said ferrule means may be snugly received upon the first member and frictionally retained thereon.
Claim 10
Dependent Claim
366 words
A pipe fitting to join a pipe to a coupling body, which has a passageway adapted to receive an insertion end and accompanying length of the pipe, the diameter of the passageway being only slightly greater than the external diameter of the pipe, comprising: a ferrule brazed to the pipe a predetermine distance from the insertion end thereof, said ferrule comprising a sleeve portion engaging the external surface of the pipe and a flange portion extending transversely to the axis of the pipe and affixed to said sleeve portion at the end of said sleeve portion farther from the insertion end of the pipe; frictional retaining means disposed about the internal circumference of said sleeve portion to maintain said ferrule at said predetermined distance from the insertion end of the pipe until it is brazed to the pipe; deformable sealing means positioned about the circumference of the pipe between said flange portion of said ferrule and the insertion end of the pipe; a coupling nut extending over a sealing means and said flange portion of said ferrule, said coupling nut having a radially inwardly extending shoulder positioned to abut the said of said flange portion away from the insertion end of the pipe; threads formed on the internal surface of said coupling nut adjacent the insertion end of the pipe; threads formed on the external surface of the coupling body to mesh with said threads on said coupling Nut; a frusto-conical mouth formed on the end of the coupling body adjacent the insertion end of the pipe, meshing of said threads on said coupling nut with said threads on the coupling body causing said frusto-conical mouth to engage said sealing means to compress said sealing means against said flange portion of said ferrule to form a fluid tight seal; and a gripping flange affixed to the coupling body to engage the end of said coupling nut when said threads on said coupling nut and on the coupling body have been meshed to a certain point, thereby limiting the compression of said sealing means and protecting said flange portion from unnecessary strains that could weaken or break the braze joint between said flange portion and the pipe.
Claim 11
Dependent Claim
366 words
A pipe fitting to join a pipe to a coupling body, which has a passageway adapted to receive an insertion end and accompanying length of the pipe, the diameter of the passageway being only slightly greater than the external diameter of the pipe, comprising: a ferrule brazed to the pipe a predetermine distance from the insertion end thereof, said ferrule comprising a sleeve portion engaging the external surface of the pipe and a flange portion extending transversely to the axis of the pipe and affixed to said sleeve portion at the end of said sleeve portion farther from the insertion end of the pipe; frictional retaining means disposed about the internal circumference of said sleeve portion to maintain said ferrule at said predetermined distance from the insertion end of the pipe until it is brazed to the pipe; deformable sealing means positioned about the circumference of the pipe between said flange portion of said ferrule and the insertion end of the pipe; a coupling nut extending over a sealing means and said flange portion of said ferrule, said coupling nut having a radially inwardly extending shoulder positioned to abut the said of said flange portion away from the insertion end of the pipe; threads formed on the internal surface of said coupling nut adjacent the insertion end of the pipe; threads formed on the external surface of the coupling body to mesh with said threads on said coupling Nut; a frusto-conical mouth formed on the end of the coupling body adjacent the insertion end of the pipe, meshing of said threads on said coupling nut with said threads on the coupling body causing said frusto-conical mouth to engage said sealing means to compress said sealing means against said flange portion of said ferrule to form a fluid tight seal; and a gripping flange affixed to the coupling body to engage the end of said coupling nut when said threads on said coupling nut and on the coupling body have been meshed to a certain point, thereby limiting the compression of said sealing means and protecting said flange portion from unnecessary strains that could weaken or break the braze joint between said flange portion and the pipe.
Claim 12
Dependent Claim
56 words
A fitting as claimed in claim 9 and further comprising a fillet between said sleeve portion and said flange portion to aid in securing proper deformation of said sealing means by directing said sealing means outwardly along said flange portion to bear against the inner surface of said coupling nut to form a stronger radial seal.
Claim 13
Dependent Claim
36 words
A fitting as claimed in claim 9 wherein said retaining means comprises a plurality of inwardly extending protrusions formed at the end of said sleeve portion of said ferrule adjacent the insertion end of the pipe.
Claim 14
Dependent Claim
28 words
A fitting as claimed in claim 9 wherein said retaining means comprises a plurality of threads disposed about the internal circumference of said sleeve portion of said ferrule.
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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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |