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WO1994013994A1 - Raccord pour tuyau souple - Google Patents

Raccord pour tuyau souple Download PDF

Info

Publication number
WO1994013994A1
WO1994013994A1 PCT/US1993/011771 US9311771W WO9413994A1 WO 1994013994 A1 WO1994013994 A1 WO 1994013994A1 US 9311771 W US9311771 W US 9311771W WO 9413994 A1 WO9413994 A1 WO 9413994A1
Authority
WO
WIPO (PCT)
Prior art keywords
hose
exterior
fitting
inverted
knurl
Prior art date
Application number
PCT/US1993/011771
Other languages
English (en)
Inventor
Jeffrey C. Shiery
James W. Briggs
Original Assignee
Aeroquip Corporation
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.)
Filing date
Publication date
Application filed by Aeroquip Corporation filed Critical Aeroquip Corporation
Publication of WO1994013994A1 publication Critical patent/WO1994013994A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
    • F16L33/2071—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
    • F16L33/2073—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member
    • F16L33/2075—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member by quick acting

Definitions

  • the invention relates to an improved hose retention member and, more particularly to an improved hose fitting where the fitting receives and holds a hose constructed of polymer material.
  • Hose fittings are well known in the art.
  • One example of a hose fitting is shown in U.S. Patent No. 4,366,841 .
  • the socket is crimped onto the hose and the hose is held between the socket member and the exterior of the fitting body.
  • the hose fitting according to the present invention includes a fitting body having a central opening extending therethrough.
  • the body has a connector end and a hose end.
  • the body includes a raised portion on the body exterior which defines a plurality of wrench flats adjacent the connector end.
  • the body exterior also defines at least one serrated portion between the body raised portion and the hose end.
  • the serrated portion comprises one or more inverted knurl bands.
  • the inverted knurl band does not have any sharp surfaces to damage a hose positioned adjacent the knurl band. Because the inverted knurl is preferably cold formed, the fitting body is not weakened due to forming projections by removing material from the body as was true in many prior art hose fittings.
  • the inverted knurl band defines a plurality of small facets which help impede fluid flow.
  • the inverted knurl band increases the friction between the exterior surface of the fitting body and the tube. This restricts undesired relative movement between the hose and the fitting body.
  • a cylindrical socket surrounds the fitting body from adjacent the raised portion and extends towards the hose end.
  • the cylindrical socket and the body define a cylindrical opening for receiving the hose.
  • the hose is positioned tightly adjacent the inverted knurl.
  • FIG. 1 is an elevation view of a hose fitting, according to the present invention, with the connector nut removed for clarity;
  • Fig. 2 is an enlarged view of the circled portion in Fig. 1 ;
  • Fig. 3 is an enlarged fragmentary cross-sectional view taken along the line 3-3 of Fig. 2;
  • Fig. 4 is a fragmentary cross-sectional view taken along the line 4-4 of Fig. 2;
  • Fig. 5 is an elevational view of another embodiment of a hose fitting, according to the present invention, with the connector nut removed for clarity;
  • Fig. 6 is an enlarged elevational view of the Fig. 1 and Fig. 5 embodiments, with the top portion shown in cross section; and,
  • Fig. 7 is an enlarged cross-sectional view of the circled portion in Fig. 6. DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to Figs. 1 -4, an improved hose fitting, according to the present invention is generally indicated by the reference number
  • the hose fitting 10 is normally constructed of steel, but can be constructed of numerous metals.
  • the hose fitting 10 includes a fitting body 1 1 having a central opening 12 extending therethrough.
  • the body or nipple 1 1 includes a connector end 13 and a hose end 14.
  • the nipple or body 1 1 has an exterior 1 6.
  • the exterior 16 has a raised portion 1 7 which defines a plurality of wrench flats 18.
  • a groove 20 is defined in the exterior 16 adjacent the connector end 13.
  • a rotatable connector nut 21 is rotatably mounted on the connector end 13 of the hose fitting 10.
  • the connector nut 21 includes internal threads 22 and a cylindrical lip 23 which is positioned within the groove 20.
  • the exterior 16 defines a second groove 25 adjacent the raised portion 17 in opposed relationship to the groove 20.
  • a cylindrical socket 26 having an in-turned flange 27 surrounds the fitting body
  • hose 30 is shown as a polymer reinforced hose. Many different polymers can be utilized with the hose fittings 10 and 40, according to the present invention.
  • a plurality of spaced circular projections 31 extend inwardly from an interior surface 32 of the socket 26.
  • the projections 31 can be of differing structural configurations and still fall within the scope of the present invention.
  • the body 1 1 of the hose fitting 10 includes a serrated portion comprising an inverted knurl band 35 which is positioned on the exterior 1 6 between the hose end 14 and the connector end 13.
  • the inverted knurl band 35 is an important feature of the present invention.
  • the inverted knurl band 35 includes a plurality of points 36 which have their upper ends either at or, preferably, slightly below the level of the exterior surface 1 6 of the body 1 1 .
  • the nipple or body 1 1 is not weakened when the inverted knurl band 35 is provided because the inverted knurling is cold formed as opposed to machined. Furthermore, because the inverted knurl band 35 has its points
  • a plurality of facets 37 are found in the inverted knurl band 35.
  • the knurl facets 37 tend to impede fluid flow up the nipple or body sealing surface which enhances the hose/fitting performance.
  • the inverted knurl band 35 also increases the degree of friction between the fitting body 1 1 and the hose 30.
  • the socket 26 is crimped so that the circular projections 31 press inwardly into the hose 30 and urge the interior of the hose 30 against the inverted knurl band 35.
  • the hose 30 is thereby positioned tightly adjacent the inverted knurl band 35 (see Fig. 7).
  • a preferred embodiment of the invention is shown in Fig. 5.
  • a hose fitting 40 has a construction generally identical with that of fitting 10, with the exception that the hose fitting 40 includes a plurality of inverted knurl bands 41 defined on the exterior surface 1 6 of the nipple or body 1 1 . It has been found that the hose fitting 40 which includes the plurality of inverted knurl bands 41 is preferable in impeding fluid flow and also in increasing friction between the body 1 1 and the hose 30 to prevent relative motion of these components after assembly is completed. Many revisions may be made to the hose fittings 10 and 40 described above, without departing from the scope of the invention or from the following claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

Raccord (10) pour tuyau souple, ledit raccord (10) comprenant un corps ou manchon (11) doté d'une ouverture (12) centrale, et un élément femelle (26) qui entoure le corps (11) et qui définit avec ce dernier (11) une ouverture (29) destinée à recevoir un tuyau (30). Une ou plusieurs bandes (35) à molette inversée sont prévues sur le corps (11). Le tuyau (30) est placé fermement contre les bandes (35) à molette inversée.
PCT/US1993/011771 1992-12-17 1993-12-03 Raccord pour tuyau souple WO1994013994A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US99216692A 1992-12-17 1992-12-17
US07/992,166 1992-12-17

Publications (1)

Publication Number Publication Date
WO1994013994A1 true WO1994013994A1 (fr) 1994-06-23

Family

ID=25537995

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/011771 WO1994013994A1 (fr) 1992-12-17 1993-12-03 Raccord pour tuyau souple

Country Status (1)

Country Link
WO (1) WO1994013994A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439870A1 (de) * 1994-11-08 1996-05-15 Hasco Normalien Hasenclever Co Druckmittelleitender Anschluß- und Verbindungskörper mit mindestens einem patrizenförmigen Schlauchstutzen
US6860522B1 (en) * 1999-11-23 2005-03-01 Lothar Spiegler Connector fitting for a high pressure hose
GB2418238A (en) * 2004-09-21 2006-03-22 Matthew Joseph Readman Screw gripping pipe end fitting
EP1643179A1 (fr) * 2004-10-01 2006-04-05 Kottmann GOSLA GmbH Embout de tuyaux souples et moyen de raccordement de tuyaux souples
US20110101680A1 (en) * 2009-10-30 2011-05-05 Caterpillar Inc. Fluid coupling assembly and method of manufacture

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139745A (en) * 1937-04-07 1938-12-13 Howard W Goodall Hose coupling
US2147355A (en) * 1938-06-29 1939-02-14 Albert J Scholtes Permanent hose coupling
US3017203A (en) * 1957-07-19 1962-01-16 W D Allen Mfg Co Connectors for plastic hose
US4330142A (en) * 1980-01-10 1982-05-18 Fayette Tubular Products Formed hose couplings

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139745A (en) * 1937-04-07 1938-12-13 Howard W Goodall Hose coupling
US2147355A (en) * 1938-06-29 1939-02-14 Albert J Scholtes Permanent hose coupling
US3017203A (en) * 1957-07-19 1962-01-16 W D Allen Mfg Co Connectors for plastic hose
US4330142A (en) * 1980-01-10 1982-05-18 Fayette Tubular Products Formed hose couplings

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439870A1 (de) * 1994-11-08 1996-05-15 Hasco Normalien Hasenclever Co Druckmittelleitender Anschluß- und Verbindungskörper mit mindestens einem patrizenförmigen Schlauchstutzen
US6860522B1 (en) * 1999-11-23 2005-03-01 Lothar Spiegler Connector fitting for a high pressure hose
GB2418238A (en) * 2004-09-21 2006-03-22 Matthew Joseph Readman Screw gripping pipe end fitting
EP1643179A1 (fr) * 2004-10-01 2006-04-05 Kottmann GOSLA GmbH Embout de tuyaux souples et moyen de raccordement de tuyaux souples
US20110101680A1 (en) * 2009-10-30 2011-05-05 Caterpillar Inc. Fluid coupling assembly and method of manufacture
US8888141B2 (en) * 2009-10-30 2014-11-18 Caterpillar Inc. Fluid coupling assembly and method of manufacture

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121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase