USRE29376E - Welded sleeve fitting - Google Patents

Welded sleeve fitting Download PDF

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Publication number
USRE29376E
USRE29376E US05/637,079 US63707975A USRE29376E US RE29376 E USRE29376 E US RE29376E US 63707975 A US63707975 A US 63707975A US RE29376 E USRE29376 E US RE29376E
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United States
Prior art keywords
sleeve
nut
tube
shoulder
coupling structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US05/637,079
Inventor
Jan A. Hiszpanski
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IMP Eastman Corp
Atlas Copco Holyoke Inc
Pullman Co
Original Assignee
IMP Eastman Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by IMP Eastman Corp filed Critical IMP Eastman Corp
Priority to US05/637,079 priority Critical patent/USRE29376E/en
Application granted granted Critical
Publication of USRE29376E publication Critical patent/USRE29376E/en
Assigned to ATLAS COPCO MANUFACTURING, INC., A CORP. OF DE reassignment ATLAS COPCO MANUFACTURING, INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: STUDEBAKER-WORTHINGTON, INC.
Assigned to IMPERIAL CLEVITE INC. reassignment IMPERIAL CLEVITE INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: I-T-E IMPERIAL CORPORATION
Assigned to CLEVITE INDUSTRIES INC., A CORP. OF DE. reassignment CLEVITE INDUSTRIES INC., A CORP. OF DE. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: IMPERIAL CLEVITE INC., A PA. CORP. (MERGED INTO)
Assigned to PULLMAN COMPANY, THE, A DE. CORP. reassignment PULLMAN COMPANY, THE, A DE. CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CLEVITE INDUSTRIES INC.,
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0225Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means without sealing rings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0206Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0231Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member with specially adapted means for positioning the threaded member behind the collar

Definitions

  • the invention relates to tube couplings and in particular to tube couplings having a sleeve permanently joined to the tube as by welding.
  • the tube end is sealingly coupled to the fitting body by means of a sleeve attached to the tube end as by welding.
  • the sleeve is sealingly engaged with the fitting body as a result of a force application effected by a nut threaded to the body.
  • a weld bead is formed at the outer end of the sleeve sealingly joining the sleeve thereat to the tube end which projects into the sleeve outer end.
  • the present invention comprehends an improved tube coupling of the above described welded sleeve type wherein the sleeve is arranged in a novel manner to permit free withdrawal of the nut from the body while yet permitting the user to form a substantial weld joint wherein the weld bend may project substantially outwardly from the tube to prevent axial outward movement of the nut therebeyond.
  • a tube coupling structure including a body having a port and a threaded portion coaxially of the port, a tubular sleeve having an inner end adapted to sealingly engage the body, and annular radially outer, axially outwardly facing shoulder, and a tubular outer end extending axially outwardly of the shoulder and terminating in a distal end, an annular nut having a threaded portion threadedly connected to the body threaded portion, the nut coaxially flange disposed axially outwardly of the sleeve shoulder for engaging the shoulder to urge the sleeve into sealing engagement with the body as an incident of threaded advance of the nut toward the body; a tube end extending coaxially inwardly into the sleeve, and an annular weld between the sleeve distal end and the tube sealingly connecting the sleeve to the
  • the sleeve may define a tube stop shoulder within the outer end thereof for limiting the insertion of the tube end thereinto.
  • the nut flange may define an inner cylindrical surface having a diameter only slightly greater than the outer diameter of the sleeve outer end.
  • the bead may define an outer circumference having a diameter throughout greater than the inner diameter of the nut flange.
  • the length of the sleeve outer end may be sufficient to permit the nut to be spaced outwardly from the body with the sleeve inner end engaging the body.
  • the axial length of the nut is no greater than the axial length of the sleeve outer end.
  • the sealing surface of the sleeve inner end may comprise a convex, frustoconical surface received in a complementary concave frustoconical recess in the body.
  • the length of the sleeve outer end may be preselected to permit the separation of the threaded means of the nut and body with the sleeve seating surface received in the concave seating surface of the body.
  • FIG. 1 is a side elevational view of a tube coupling structure embodying the invention
  • FIG. 2 is a diametric section thereof.
  • FIG. 3 is a diametric section illustrating the arrangement thereof upon disconnection of the tube end from the body.
  • a tube coupling structure generally designated 10 is shown to comprise a tube coupling 11 having sealingly secured thereto a tube end 12.
  • the tube coupling 11 includes a sleeve 13, a nut 14, and a body 15.
  • the sleeve is sealingly connected to the tube 12 by a weld 16 at the outer end of the sleeve.
  • body 15 may comprise a tubular fitting body having an axial bore 17 opening at the outer end into an enlarged recess 18 defined by a frustoconical outwardly widening seating surface 19.
  • the body may define an outer thread 20 for coupling the body to another element as desired, and an inner thread 21 for threaded engagement with the nut 14.
  • a plurality of flats 22 may be provided on a mid-portion of the body for cooperation with a suitable tool, such as a wrench, in making up the fitting.
  • Nut 14 comprises a tubular element having an inner female thread 23 and an axially outer inturned flange 24 defining a cylindrical inner surface 25.
  • Sleeve 13 herein comprises a tubular element having a through bore 26 provided with a radially enlarged outer portion 27 defining at its inner end a stop shoulder 28 for limiting the insertion of tube end 12 into the sleeve.
  • the sleeve defines a frustoconical inwardly narrowing seating surface 29 adapted to have sealing engagement with the seating surface 19 of the body in the made-up arrangement of the fitting.
  • the sleeve further defines a collar portion 30 defining an axially outwardly facing shoulder 31 adapted to be engaged by the nut flange 24 as an incident of threaded advancement of the nut on the body thread 21 as during make-up of the fitting.
  • the sleeve further defines a tubular outer end 32 extending axially outwardly of the plane of shoulder 31 and terminating in a distal end 33.
  • Weld 16 may comprise a conventional weld defined by a bead of suitable weld material fused to the distal end 33 of the sleeve and to the outer surface of the tube 12 to define a sealed connection of the tube to the sleeve.
  • the weld bead may extend radially outwardly beyond the outer circumference of sleeve end 33 and as best seen in FIG. 3, may have an outer dimension greater than the diameter of nut flange surface 25 whereby the nut is maintained captive on the sleeve in the made-up arrangement of the sleeve and tube end.
  • the invention comprehends providing an outer end 32 of the sleeve having an axial length preselected to permit withdrawal of the nut axially outwardly of the axially inner end of the sleeve, thereby to permit separation of the sleeve and nut assembly from the body notwithstanding the maintenance of the nut flange radially outwardly of the sleeve outer end portion 32, as shown in FIG. 3.
  • the axial length of the nut is made to be no greater than the axial length of the sleeve 13, and more specifically, as shown in FIG. 3, may be no greater than the axial length of sleeve outer end 32.
  • the diameter of nut flange surface 25 may be made only slightly greater than the outer diameter of sleeve end portion 32 as there is no need for the nut to be withdrawn axially beyond the weld bead 16 in order to permit disconnection of the tube end from the fitting body 15, as illustrated in FIG. 3.
  • the present fitting permits make-up and disassembly of the joint in the normal manner notwithstanding the provision of a relatively large weld bead 16 assuring positive sealed connection of the sleeve to the tube.
  • the coupling 10 is adapted for critical applications involving high pressure, elevated temperature, heavy external loads, and the need for high reliability in maintaining the sealed connection such as required in nuclear industry, power plant, chemical plant, shipyard, pressure testing, etc. applications.
  • the invention comprehends the use of the disclosed structure in a wide range of coupling sizes as desired.
  • the application of the weld 16 may be effected by the user and the use of the relatively long sleeve end 32 provides improved facilitated make-up of the fitting in spacing the point of welding substantially from the seating surface 29, thereby effectively minimizing possibility of deformation of the seating surface as from the heat of welding as may occur in the conventional fittings where the weld is made relatively close to the seat end of the sleeve.
  • the user need merely insert the tube end 12 into the sleeve end bore portion 27 into abutment with shoulder 28 with nut 14 installed about the sleeve.
  • the sleeve is then sealingly joined to the tube by the application of the weld 16.
  • the tube end may then be coupled to a suitable male coupling element, such as body 15, having a suitable cooperating threaded portion for use with the nut 14.
  • the axial length of sleeve end portion 32 permits free movement of the nut on the sleeve, notwithstanding the fact that the nut is effectively captured between shoulder 31 and weld bead 16, to permit facilitated make-up and disconnection of the fitting.
  • the user threads the nut on body threads 21 suitably to urge nut flange 24 against sleeve shoulder 31 and resultingly seal sleeve seating surface 29 sealingly against body seating surface 19, thereby to complete the sealed make-up of the coupling.
  • the user may threadedly withdraw the nut sufficiently to completely disengage the nut from the thread 21 whereupon the seating surface portion 29 may be withdrawn axially from the body recess 18 as desired.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Pressure Members (AREA)

Abstract

A fitting for use with metal tubes adapted for critical applications such as involving high pressure and/or elevated temperatures for heavy external loads. The fitting includes a sleeve which is sealingly welded to the tube end and defines an improved cooperative nut and sleeve structure whereby the nut may be threadedly withdrawn from the body notwithstanding the projection of the sealing weld sufficiently from the tube to prevent complete withdrawal of the nut from the sleeve.

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to tube couplings and in particular to tube couplings having a sleeve permanently joined to the tube as by welding.
2. Description of the Prior Art
In one conventional form of tube coupling, the tube end is sealingly coupled to the fitting body by means of a sleeve attached to the tube end as by welding. The sleeve, in turn, is sealingly engaged with the fitting body as a result of a force application effected by a nut threaded to the body. In welding the sleeve to the body, a weld bead is formed at the outer end of the sleeve sealingly joining the sleeve thereat to the tube end which projects into the sleeve outer end. In the known fittings of this type, a problem has arisen from time to time in that the weld bead interferes with the removal of the nut from the body causing substantial difficulty in disconnecting the tube from the body when desired.
SUMMARY OF THE INVENTION
The present invention comprehends an improved tube coupling of the above described welded sleeve type wherein the sleeve is arranged in a novel manner to permit free withdrawal of the nut from the body while yet permitting the user to form a substantial weld joint wherein the weld bend may project substantially outwardly from the tube to prevent axial outward movement of the nut therebeyond.
More specifically, the invention comprehends the provision of a tube coupling structure including a body having a port and a threaded portion coaxially of the port, a tubular sleeve having an inner end adapted to sealingly engage the body, and annular radially outer, axially outwardly facing shoulder, and a tubular outer end extending axially outwardly of the shoulder and terminating in a distal end, an annular nut having a threaded portion threadedly connected to the body threaded portion, the nut coaxially encircling the sleeve and having an inturned flange disposed axially outwardly of the sleeve shoulder for engaging the shoulder to urge the sleeve into sealing engagement with the body as an incident of threaded advance of the nut toward the body; a tube end extending coaxially inwardly into the sleeve, and an annular weld between the sleeve distal end and the tube sealingly connecting the sleeve to the tube end and having a radial outer dimension greater than the corresponding radial inner dimension of the nut flange whereby the nut flange is captured axially movably between the sleeve shoulder and the weld in the made-up arrangement of the tube coupling, the length of the sleeve outer end outwardly of the shoulder being preselected to permit withdrawal of the nut axially outwardly of the axially inner end of the sleeve thereby to permit separation of the sleeve and nut from the body with the nut flange maintained radially outwardly of the sleeve outer end.
The sleeve may define a tube stop shoulder within the outer end thereof for limiting the insertion of the tube end thereinto. The nut flange may define an inner cylindrical surface having a diameter only slightly greater than the outer diameter of the sleeve outer end. The bead may define an outer circumference having a diameter throughout greater than the inner diameter of the nut flange.
The length of the sleeve outer end may be sufficient to permit the nut to be spaced outwardly from the body with the sleeve inner end engaging the body. In the illustrative embodiment, the axial length of the nut is no greater than the axial length of the sleeve outer end. The sealing surface of the sleeve inner end may comprise a convex, frustoconical surface received in a complementary concave frustoconical recess in the body. The length of the sleeve outer end may be preselected to permit the separation of the threaded means of the nut and body with the sleeve seating surface received in the concave seating surface of the body.
BRIEF DESCRIPTION OF THE DRAWING
Other features and advantages of the invention will be apparent from the following description taken in connection with the accompanying drawing wherein:
FIG. 1 is a side elevational view of a tube coupling structure embodying the invention;
FIG. 2 is a diametric section thereof; and
FIG. 3 is a diametric section illustrating the arrangement thereof upon disconnection of the tube end from the body.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In the exemplary embodiment of the invention as disclosed in the drawing, a tube coupling structure generally designated 10 is shown to comprise a tube coupling 11 having sealingly secured thereto a tube end 12. The tube coupling 11 includes a sleeve 13, a nut 14, and a body 15. The sleeve is sealingly connected to the tube 12 by a weld 16 at the outer end of the sleeve.
As shown in FIGS. 2 and 3, body 15 may comprise a tubular fitting body having an axial bore 17 opening at the outer end into an enlarged recess 18 defined by a frustoconical outwardly widening seating surface 19. The body may define an outer thread 20 for coupling the body to another element as desired, and an inner thread 21 for threaded engagement with the nut 14. A plurality of flats 22 may be provided on a mid-portion of the body for cooperation with a suitable tool, such as a wrench, in making up the fitting.
Nut 14 comprises a tubular element having an inner female thread 23 and an axially outer inturned flange 24 defining a cylindrical inner surface 25.
Sleeve 13 herein comprises a tubular element having a through bore 26 provided with a radially enlarged outer portion 27 defining at its inner end a stop shoulder 28 for limiting the insertion of tube end 12 into the sleeve. At its inner end, the sleeve defines a frustoconical inwardly narrowing seating surface 29 adapted to have sealing engagement with the seating surface 19 of the body in the made-up arrangement of the fitting. The sleeve further defines a collar portion 30 defining an axially outwardly facing shoulder 31 adapted to be engaged by the nut flange 24 as an incident of threaded advancement of the nut on the body thread 21 as during make-up of the fitting.
The sleeve further defines a tubular outer end 32 extending axially outwardly of the plane of shoulder 31 and terminating in a distal end 33.
Weld 16 may comprise a conventional weld defined by a bead of suitable weld material fused to the distal end 33 of the sleeve and to the outer surface of the tube 12 to define a sealed connection of the tube to the sleeve.
As shown, the weld bead may extend radially outwardly beyond the outer circumference of sleeve end 33 and as best seen in FIG. 3, may have an outer dimension greater than the diameter of nut flange surface 25 whereby the nut is maintained captive on the sleeve in the made-up arrangement of the sleeve and tube end.
As indicated briefly above, the invention comprehends providing an outer end 32 of the sleeve having an axial length preselected to permit withdrawal of the nut axially outwardly of the axially inner end of the sleeve, thereby to permit separation of the sleeve and nut assembly from the body notwithstanding the maintenance of the nut flange radially outwardly of the sleeve outer end portion 32, as shown in FIG. 3. In the illustrated embodiment, the axial length of the nut is made to be no greater than the axial length of the sleeve 13, and more specifically, as shown in FIG. 3, may be no greater than the axial length of sleeve outer end 32.
The diameter of nut flange surface 25 may be made only slightly greater than the outer diameter of sleeve end portion 32 as there is no need for the nut to be withdrawn axially beyond the weld bead 16 in order to permit disconnection of the tube end from the fitting body 15, as illustrated in FIG. 3. Thus, the present fitting permits make-up and disassembly of the joint in the normal manner notwithstanding the provision of a relatively large weld bead 16 assuring positive sealed connection of the sleeve to the tube. Thus, the coupling 10 is adapted for critical applications involving high pressure, elevated temperature, heavy external loads, and the need for high reliability in maintaining the sealed connection such as required in nuclear industry, power plant, chemical plant, shipyard, pressure testing, etc. applications. The invention comprehends the use of the disclosed structure in a wide range of coupling sizes as desired.
The application of the weld 16 may be effected by the user and the use of the relatively long sleeve end 32 provides improved facilitated make-up of the fitting in spacing the point of welding substantially from the seating surface 29, thereby effectively minimizing possibility of deformation of the seating surface as from the heat of welding as may occur in the conventional fittings where the weld is made relatively close to the seat end of the sleeve.
In use of the fitting, the user need merely insert the tube end 12 into the sleeve end bore portion 27 into abutment with shoulder 28 with nut 14 installed about the sleeve. The sleeve is then sealingly joined to the tube by the application of the weld 16. The tube end may then be coupled to a suitable male coupling element, such as body 15, having a suitable cooperating threaded portion for use with the nut 14. The axial length of sleeve end portion 32 permits free movement of the nut on the sleeve, notwithstanding the fact that the nut is effectively captured between shoulder 31 and weld bead 16, to permit facilitated make-up and disconnection of the fitting. In connecting the tube to the body, the user threads the nut on body threads 21 suitably to urge nut flange 24 against sleeve shoulder 31 and resultingly seal sleeve seating surface 29 sealingly against body seating surface 19, thereby to complete the sealed make-up of the coupling.
In disconnecting the joint, the user may threadedly withdraw the nut sufficiently to completely disengage the nut from the thread 21 whereupon the seating surface portion 29 may be withdrawn axially from the body recess 18 as desired.
The foregoing disclosure of specific embodiments is illustrative of the broad inventive concepts comprehended by the invention.

Claims (10)

I claim:
1. A tube coupling structure comprising: a body having a port and a threaded portion coaxially of said port; a tubular sleeve having an inner end adapted to sealingly engage the body, an annular radially outer, axially outwardly facing shoulder, and a tubular outer end extending axially outwardly of said shoulder and terminating in a distal end; an annular nut having a threaded portion threadedly connected to the body threaded portion, said nut coaxially encircling said sleeve and having an inturned flange disposed axially outwardly of said sleeve shoulder for engaging said shoulder to urge said sleeve into sealing engagement with said body as an incident of threaded advance of said nut toward said body; a tube end extending coaxially inwardly into said sleeve; and an annular weld between said sleeve distal end and said tube sealingly connecting the sleeve to the tube end, said weld and said shoulder having a radial outer dimension greater than the corresponding radial inner dimension of said nut flange whereby said nut flange is captured axially movably between said sleeve shoulder and said weld in the made-up arrangement of the tube coupling, the length of said sleeve outer end outwardly of said shoulder being preselected to permit withdrawal of the nut axially outwardly of the axially inner end of the sleeve thereby to permit separation of said sleeve and nut from said body with said nut flange maintained radially outwardly of said sleeve outer end.
2. The tube coupling structure of claim 1 wherein said sleeve defines an internal tube stop shoulder axially outwardly of said radially outer shoulder limiting the axially inward positioning of the tube end in said sleeve outer end.
3. The tube coupling structure of claim 1 wherein said nut flange is annular.
4. The tube coupling structure of claim 1 wherein the axial length of said nut is no greater than the axial length of said sleeve.
5. The tube coupling structure of claim 1 wherein the axial length of said nut is less than the axial length of said sleeve.
6. The tube coupling structure of claim 1 wherein the length of said sleeve outer end outwardly of said shoulder is sufficient to permit said nut to be spaced outwardly from said body with said sleeve inner end engaging said body.
7. The tube coupling structure of claim 1 wherein said nut has an axial length no greater than the axial length of said sleeve outer end.
8. The tube coupling structure of claim 1 wherein said nut flange has an inner diameter only slightly greater than the outer diameter of said sleeve outer end.
9. The tube coupling structure of claim 1 wherein said body threaded portion defines a male thread.
10. The tube coupling structure of claim 1 wherein said inner end of the sleeve defines a convex seating surface and said body defines a complementary concave seating surface with said sleeve seating surface projecting into said body to sealingly engage said body seating surface in the make-up arrangement of the fitting. .Iadd. 11. The tube coupling structure of claim 1 wherein said sleeve outer end defines an annular, axially outwardly facing surface, said tube end being retained in abutment therewith by said weld. .Iaddend..Iadd. 12. The tube coupling structure of claim 1 wherein said sleeve outer end is defined by a stepped annular end surface including an axially outwardly facing outer planar portion, a cylindrical intermediate portion, and an axially outwardly facing inner planar portion, said tube end axially abutting said end surface. .Iaddend.
US05/637,079 1972-02-28 1975-12-02 Welded sleeve fitting Expired - Lifetime USRE29376E (en)

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US22970772A 1972-02-28 1972-02-28
US05/637,079 USRE29376E (en) 1972-02-28 1975-12-02 Welded sleeve fitting

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0178838A2 (en) * 1984-10-17 1986-04-23 Anson Limited Method of manufacturing lengths of pipe
US5082243A (en) * 1988-11-24 1992-01-21 Sandvik Ab Gas container, a coupling for a gas container, and a method of making a gas container
US5360242A (en) * 1992-10-07 1994-11-01 Argent Michael F Pipe connecting assembly and method for joining two lengths of steel pipe by a press-fit connection
US5921591A (en) * 1992-10-07 1999-07-13 Argent; Michael E. Pipe connecting assembly and method for joining two lengths of pipe by a press-fit connection
US20010003398A1 (en) * 1999-12-10 2001-06-14 Shoichiro Usui High-pressure metal pipe having connecting head and method of forming the connecting head as well as sleeve washer for the connecting head
US20080290661A1 (en) * 2006-11-07 2008-11-27 O'brien Paul W Adapter Tube Arrangement for Strengthening Pipe Connection
US20090039645A1 (en) * 2007-08-10 2009-02-12 Serge Dube Fitting and tube assembly for refrigeration systems
US20090139595A1 (en) * 2006-03-14 2009-06-04 Usui Kokusai Sangyo Kaisha Limited Connecting Head Stucture For High-Pressure Fuel Injection Pipes
US20100197423A1 (en) * 2009-02-05 2010-08-05 Nike, Inc. Releasable and interchangeable connections for golf club heads and shafts
US20110111881A1 (en) * 2009-02-05 2011-05-12 Nike, Inc. Releasable And Interchangeable Connections For Golf Club Heads And Shafts
US20110172021A1 (en) * 2002-07-24 2011-07-14 Nike, Inc. Temporary Golf Club Shaft-Component Connection
US8182357B2 (en) 2007-09-10 2012-05-22 Nike, Inc. Adjustable connector
US8449404B2 (en) 2009-02-05 2013-05-28 Nike, Inc. Releasable and interchangeable connections for golf club heads and shafts
US8523700B2 (en) 2009-07-24 2013-09-03 Nike, Inc. Releasable and interchangeable connections for golf club heads and shafts
US8616995B2 (en) 2007-07-06 2013-12-31 Nike, Inc. Releasable and interchangeable connections for golf club heads and shafts
US8961329B2 (en) 2009-03-16 2015-02-24 Nike, Inc. Releasable and interchangeable connections for golf club heads and shafts
US20150322986A1 (en) * 2013-11-01 2015-11-12 Zhongshan Sirui Photographic Equipment Industry Co Ltd. Quick connection anti-loose apparatus
US20170314712A1 (en) * 2016-04-29 2017-11-02 Saint-Gobain Performance Plastics Corporation Tongued and grooved fluid transport subcomponents and assemblies
US20180142812A1 (en) * 2016-11-23 2018-05-24 Ford Global Technologies, Llc Flared exhaust gas pressure tube having keyed washer
US10619778B2 (en) 2016-05-06 2020-04-14 Northwest Pipe Company Pipe ram joint

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FR731198A (en) * 1932-02-09 1932-08-30 Improvements to pipe fittings
US2273017A (en) * 1939-06-30 1942-02-17 Boynton Alexander Right and left drill pipe
FR1104282A (en) * 1954-05-07 1955-11-17 Compteurs Et Moteurs Aster Threaded connection for piping and similar components
CA562012A (en) * 1958-08-19 Dominion Gasket And Manufacturing Company Hose coupling
US2984899A (en) * 1956-03-12 1961-05-23 Dresser Ind Method of joining pipe sections by heating and subsequent cooling
FR1321479A (en) * 1962-02-05 1963-03-22 Clesse S A Ets Connection of a tubular element to a threaded connection
US3288494A (en) * 1965-08-11 1966-11-29 Cajon Co Union coupling

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA562012A (en) * 1958-08-19 Dominion Gasket And Manufacturing Company Hose coupling
FR731198A (en) * 1932-02-09 1932-08-30 Improvements to pipe fittings
US2273017A (en) * 1939-06-30 1942-02-17 Boynton Alexander Right and left drill pipe
FR1104282A (en) * 1954-05-07 1955-11-17 Compteurs Et Moteurs Aster Threaded connection for piping and similar components
US2984899A (en) * 1956-03-12 1961-05-23 Dresser Ind Method of joining pipe sections by heating and subsequent cooling
FR1321479A (en) * 1962-02-05 1963-03-22 Clesse S A Ets Connection of a tubular element to a threaded connection
US3288494A (en) * 1965-08-11 1966-11-29 Cajon Co Union coupling

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0178838A3 (en) * 1984-10-17 1987-08-26 Anson Limited Method of manufacturing lengths of pipe
EP0178838A2 (en) * 1984-10-17 1986-04-23 Anson Limited Method of manufacturing lengths of pipe
US5082243A (en) * 1988-11-24 1992-01-21 Sandvik Ab Gas container, a coupling for a gas container, and a method of making a gas container
US5360242A (en) * 1992-10-07 1994-11-01 Argent Michael F Pipe connecting assembly and method for joining two lengths of steel pipe by a press-fit connection
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