WO1984001202A1 - Fluid coupling for engine - Google Patents

Fluid coupling for engine Download PDF

Info

Publication number
WO1984001202A1
WO1984001202A1 PCT/US1983/001383 US8301383W WO8401202A1 WO 1984001202 A1 WO1984001202 A1 WO 1984001202A1 US 8301383 W US8301383 W US 8301383W WO 8401202 A1 WO8401202 A1 WO 8401202A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
conduit means
engine
exterior
connector
Prior art date
Application number
PCT/US1983/001383
Other languages
French (fr)
Inventor
Thomas S Krause
Original Assignee
Krause Barbara Ann
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 Krause Barbara Ann filed Critical Krause Barbara Ann
Publication of WO1984001202A1 publication Critical patent/WO1984001202A1/en

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
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the present invention relates to a fluid coupling (10) adapted for use on an engine in a position which normally would prevent a conventional coupling from being threaded into position.
  • the present invention particularly relates to a coupling which has a conduit means (11), which allows connection of flexible cooling fluid hoses, rotatably attached to a housing (21) so as to permit the housing to be threaded (22) into position on an engine without rotating the conduit means.
  • the prior art has provided many different couplings for engines which allow connection of flexible hoses to the engine.
  • the conventional type and the coupling which the coupling present invention is designed to replace includes a flange rigidly supporting a conduit means for the hose connection which is secured by multiple bolts to a machined flat surface of the engine block.
  • This type of coupling is relatively heavy since it is made of cast or forged metal and it is prone to leakage through gaskets which are usually provided between the coupling and the machined surface of the engine.
  • Couplings which are threadably connected to the engine can be lighter and more leak proof; however, the cramped area in many motor vehicle engine compartments and many parts on the surface of the engine has prevented such a coupling from being used.
  • Figure 1 is a front view in partial cross-section showing a threaded (22) housing (21) with a bushing (20) forming a connector means for threading into a mating opening in an engine and an L-shaped conduit means (11), which allows connection of flexible cooling fluid hoses, having a lip (11e) adjacent the bushing (20) for holding the conduit means (11) and bushing (20) together.
  • Figure 2 is a right end view of Figure 1.
  • Figure 3 is a separated front view of a similar type of fluid coupling (10), particularly shown in a C snap ring (30) adapted to fit into a corresponding groove (11F) in the conduit means (11) for rotatable mounting on the housing (21).
  • Figures 4A and 4B are detailed views of an o-ring 17 and a groove (11G) as shown in Figures 1 and 3 before and after mating of the bushing (20) and exterior cylindrical surface (11C) of conduit means (11).
  • the present invention relates to a fluid coupling for an engine which comprises: conduit means adapted for connection to flexible hose at one end and having a cylindrical, exterior surface at the other end; connector means having a cylindrical interior surface adapted for a precision rotational fit to the exterior surface of the conduit means, the connector means having an exterior threaded surface adapted to fit a mating threaded opening in an engine and having an exterior wrench engaging means for threading the connector means into the engine opening such that there is a fluid connection with the flexible hose connection end of the conduit means; retaining means for rotatably holding the conduit means and connector means together; and seal means between the exterior surface of the conduit means and the interior surface of the connector means.
  • the present invention further relates to the method of mounting a threaded coupling to a mating threaded opening on an engine, wherein the coupling is located in a position on the engine which does not allow unrestricted rotational movement of the coupling during mounting
  • the improvement which comprises: providing a coupling which comprises conduit means adapted for connection to flexible hose at one end and having a cylindrical exterior surface at the other end; connector means having a cylindrical interior surface adapted for a precision rotational fit to the exterior surface of the conduit means, the connector means having an exterior threaded surface adapted to fit a mating threaded opening in an engine and having an exterior wrench engaging means for threading the connector means into the engine opening such that there is a fluid connection with the flexible hose connection end of the conduit means; retaining means for rotatably holding the conduit means and connector means together; and seal means between the exterior surface of the conduit means and the interior surface of the connector means.
  • FIG. 1 the preferred form of the coupling 10 of the present invention is shown.
  • An L-shaped conduit 11, including first and second sections 11A and 11B, is provided with a stamped circumferential lip 12 at one end 13 adapted to receive a flexible hose and clamp (not shown). Perpendicular to the axis of the first section 11A is provided the axis of second section 11B.
  • the end 14 of section 11A opposite the lip 12 is sealed by cover 15.
  • the sections 11A and 11B are joined together at a union 16 such as by welding or by some other means of securing the sections 11A and 11B together in a leak-proof manner.
  • the section 11B has a cylindrical exterior surface 11C which is adapted for rotatable sealing engagement with an interior surface 20A of bushing 20.
  • Preferably o-ring seals 17 are provided around the exterior surface 11C.
  • the bushing 20 is securely fastened in a housing 21.
  • the housing 21 is provided with wrench engaging surfaces 23 and exterior threads 22 for threaded connection with a mating opening in an engine.
  • An external shoulder 11D is provided on the second section 11B which bears on a shoulder 20B of bushing 20.
  • a second shoulder 20C on bushing 20 supports a crimped integral extension 11E of the second section 11B so as to hold the conduit means 11 in place in the housing 21.
  • the conduit 11 is rotatable around the longitudinal axis of second section 11B in bushing 20 mounted in housing 21.
  • the coupling 11 construction shown in Figure 3 is identical to that shown in Figures 1 and 2 except that a C shaped snap ring 30 fits into a groove 11F of second section 11B to hold the conduit means 11 and the bushing 20 and housing 21 together. Again there can be rotational movement of the conduit 11 relative to the bushing 20 and housing 21.
  • the threads 22 on the housing 21 are threaded into a mating threaded opening (not shown) of an engine.
  • the conduit 11 can remain in a fixed position against an external surface of the engine while the housing 21 is turned into position using the wrench engaging means 23.
  • the o-rings 17 are round in cross-section as shown in Figures 4A and are fitted into grooves 11G which are wider than the o-rings 17 along the axis of the second section 11B and extend slightly above the cylindrical surface 11C as shown in Figure 4A.
  • the pressure of the fluid shown by the arrow forces the ring into the space between the exterior surface 11C and the interior surface 20A.
  • Other sealing means such as packings and the like could be used; however, the o-rings 17 are preferred.
  • the second section 11B is shown as being machined; however, it could be the exterior surface of a tube. It will be appreciated that the shoulder 11D can be provided by upsetting a lip on the second section 11B (not shown) like lip 12.
  • the housing 21 is preferably die stamped. Preferably at least the surface 20A of bushing 20 is machined. All of these variations will occur to those skilled in the art.

Abstract

The fluid coupling (10) includes a housing (21) threaded (22) for connection to the engine with a rotatable conduit means (11) which allows connection of flexible cooling fluid hoses in sealed connection with the housing. The housing can be turned into a corresponding threaded opening in the engine, particularly one located in a position which allows restricted rotational movement of the conduit means. This coupling is particularly adapted for use on heavy diesel engines, but could be adapted to any size engine, such as gasoline or diesel, for application in motor vehicles and the like.

Description

FLUID COUPLING FOR ENGINE
Summary of the Invention
The present invention relates to a fluid coupling (10) adapted for use on an engine in a position which normally would prevent a conventional coupling from being threaded into position. The present invention particularly relates to a coupling which has a conduit means (11), which allows connection of flexible cooling fluid hoses, rotatably attached to a housing (21) so as to permit the housing to be threaded (22) into position on an engine without rotating the conduit means. Prior Art
The prior art has provided many different couplings for engines which allow connection of flexible hoses to the engine. The conventional type (and the coupling which the coupling present invention is designed to replace includes a flange rigidly supporting a conduit means for the hose connection which is secured by multiple bolts to a machined flat surface of the engine block. This type of coupling is relatively heavy since it is made of cast or forged metal and it is prone to leakage through gaskets which are usually provided between the coupling and the machined surface of the engine.
Couplings which are threadably connected to the engine can be lighter and more leak proof; however, the cramped area in many motor vehicle engine compartments and many parts on the surface of the engine has prevented such a coupling from being used.
The prior art has provided quick disconnect type rotary fluid couplings; however, these are relatively expensive. Examples are U.S. Patent Nos. 1,754,639; 2,226,826; 2,429,782; 2,952,482; 3,129,777; 2,642,297; 3,540,760; 3,718,350; 4,133,564; 4,193,616. Such couplings would not be suitable for a permanent fluid connection to an engine because of the risk of disconnection. Rotary fluid couplings are known in other arts but it is not believed that they have been used in engines as far as applicant is aware. Objects
It is therefore an object of the present invention to provide a coupling (10) which can be threadably ( 22 ) connected to a mating threaded opening in a engine at a position where a conventional threaded coupling could not be tightened into position. Further it is an object to provide a coupling which is inexpensive to construct, which is light in weight and which is easy to install. These and other objects will become increasingly apparent by reference to the following description and to the drawings. In the Drawings Figure 1 is a front view in partial cross-section showing a threaded (22) housing (21) with a bushing (20) forming a connector means for threading into a mating opening in an engine and an L-shaped conduit means (11), which allows connection of flexible cooling fluid hoses, having a lip (11e) adjacent the bushing (20) for holding the conduit means (11) and bushing (20) together. Figure 2 is a right end view of Figure 1. Figure 3 is a separated front view of a similar type of fluid coupling (10), particularly shown in a C snap ring (30) adapted to fit into a corresponding groove (11F) in the conduit means (11) for rotatable mounting on the housing (21).
Figures 4A and 4B are detailed views of an o-ring 17 and a groove (11G) as shown in Figures 1 and 3 before and after mating of the bushing (20) and exterior cylindrical surface (11C) of conduit means (11). General Description
The present invention relates to a fluid coupling for an engine which comprises: conduit means adapted for connection to flexible hose at one end and having a cylindrical, exterior surface at the other end; connector means having a cylindrical interior surface adapted for a precision rotational fit to the exterior surface of the conduit means, the connector means having an exterior threaded surface adapted to fit a mating threaded opening in an engine and having an exterior wrench engaging means for threading the connector means into the engine opening such that there is a fluid connection with the flexible hose connection end of the conduit means; retaining means for rotatably holding the conduit means and connector means together; and seal means between the exterior surface of the conduit means and the interior surface of the connector means. The present invention further relates to the method of mounting a threaded coupling to a mating threaded opening on an engine, wherein the coupling is located in a position on the engine which does not allow unrestricted rotational movement of the coupling during mounting the improvement which comprises: providing a coupling which comprises conduit means adapted for connection to flexible hose at one end and having a cylindrical exterior surface at the other end; connector means having a cylindrical interior surface adapted for a precision rotational fit to the exterior surface of the conduit means, the connector means having an exterior threaded surface adapted to fit a mating threaded opening in an engine and having an exterior wrench engaging means for threading the connector means into the engine opening such that there is a fluid connection with the flexible hose connection end of the conduit means; retaining means for rotatably holding the conduit means and connector means together; and seal means between the exterior surface of the conduit means and the interior surface of the connector means. rotating the connector means into the engine opening with the conduit means being restricted as to movement relative to the connector means. Specific Description Referring to Figures 1 and 2, the preferred form of the coupling 10 of the present invention is shown. An L-shaped conduit 11, including first and second sections 11A and 11B, is provided with a stamped circumferential lip 12 at one end 13 adapted to receive a flexible hose and clamp (not shown). Perpendicular to the axis of the first section 11A is provided the axis of second section 11B. The end 14 of section 11A opposite the lip 12 is sealed by cover 15. The sections 11A and 11B are joined together at a union 16 such as by welding or by some other means of securing the sections 11A and 11B together in a leak-proof manner.
The section 11B has a cylindrical exterior surface 11C which is adapted for rotatable sealing engagement with an interior surface 20A of bushing 20. Preferably o-ring seals 17 are provided around the exterior surface 11C. The bushing 20 is securely fastened in a housing 21. The housing 21 is provided with wrench engaging surfaces 23 and exterior threads 22 for threaded connection with a mating opening in an engine. An external shoulder 11D is provided on the second section 11B which bears on a shoulder 20B of bushing 20. A second shoulder 20C on bushing 20 supports a crimped integral extension 11E of the second section 11B so as to hold the conduit means 11 in place in the housing 21. In the construction of Figures 1 and 2, the conduit 11 is rotatable around the longitudinal axis of second section 11B in bushing 20 mounted in housing 21.
The coupling 11 construction shown in Figure 3 is identical to that shown in Figures 1 and 2 except that a C shaped snap ring 30 fits into a groove 11F of second section 11B to hold the conduit means 11 and the bushing 20 and housing 21 together. Again there can be rotational movement of the conduit 11 relative to the bushing 20 and housing 21. In use, the threads 22 on the housing 21 are threaded into a mating threaded opening (not shown) of an engine. The conduit 11 can remain in a fixed position against an external surface of the engine while the housing 21 is turned into position using the wrench engaging means 23.
Preferably the o-rings 17 are round in cross-section as shown in Figures 4A and are fitted into grooves 11G which are wider than the o-rings 17 along the axis of the second section 11B and extend slightly above the cylindrical surface 11C as shown in Figure 4A. As shown in Figure 4B, the pressure of the fluid, shown by the arrow forces the ring into the space between the exterior surface 11C and the interior surface 20A. Other sealing means such as packings and the like could be used; however, the o-rings 17 are preferred.
It was found in dynamic testing on an engine that the coupling 10 was able to survive for 700 hours without leakage at a pressure of 40 to 50 psi and a temperature range of -70° to +600°F without leakage, except for a few drops initially during seating of the seals 17.
The second section 11B is shown as being machined; however, it could be the exterior surface of a tube. It will be appreciated that the shoulder 11D can be provided by upsetting a lip on the second section 11B (not shown) like lip 12. The housing 21 is preferably die stamped. Preferably at least the surface 20A of bushing 20 is machined. All of these variations will occur to those skilled in the art.

Claims

I CLAIM:
-1- A fluid coupling for an engine which comprises: (a) conduit means adapted for connection to flexible hose at one end and having a cylindrical exterior surface at the other end; (b) connector means having a cylindrical interior surface adapted for a precision rotational fit to the exterior surface of the conduit means, the connector means having an exterior threaded surface adapted to fit a mating threaded opening in an engine and having an exterior wrench engaging means for threading the connector means into the engine opening such that there is a fluid conection with the flexible hose connection end of the conduit means;
(c) retaining means for rotatably holding the conduit means and connector means together; and
(d) seal means between the exterior surface of the conduit means and the interior surface of the connector means.
-2-
The coupling of Claim 1 wherein the conduit means is tubular and L-shaped having two longitudinal axis which are at right angles to each other, one axis for the end for the flexible hose connection and the other axis for the end with the exterior surface.
-3-
The coupling of Claim 1 wherein the retaining means is an integral lip adjacent the exterior cylindrical surface of the conduit means which engages the connector means adjacent the interior cyindrical surface to hold the connector means and conduit means together. -4-
The coupling of Claim 1 wherein the connector means includes a housing with the wrench engaging surface and the threaded surface and a bushing secured to the housing which provides the interior cylindrical surface.
-5- The coupling of Claim 4 wherein the retaining means is an integral lip adjacent the exterior cylindrical surface of the conduit means which engages the bushing adjacent the interior cylindrical surface to hold the connector means and conduit means together.
-6- The coupling of Claim 1 wherein the retaining means is a C shaped snap ring which engages a groove in the conduit means adjacent the exterior surface to hold the connector means and conduit means together.
-7- The coupling of Claim 1 wherein the sealing mean is at least one o-ring mounted in a groove wider than the o-ring on the conduit means which engages an interior surface of the connector means.
-8- The coupling of Claim 7 wherein there are two ring seals.
-9- The coupling of Claim 4 wherein the bushing is securely fastened to the housing. -10- In the method of mounting a threaded coupling to a mating threaded opening on an engine wherein the coupling is located in a position on an engine which does not allow unrestricted rotational movement of the coupling during mounting the improvement which comprises:
(a) providing a coupling which comprises conduit means adapted for connection to flexible hose at one end and having a cylindrical exterior surface at the other end; connector means having a cylindrical interior surface adapted for a precision rotational fit to the exterior surface of the conduit means, the connector means having an exterior threaded surface adapted to fit a mating threaded opening in an engine and having an exterior wrench engaging means for threading the connector means into the engine opening such that there is a fluid connection with the flexible hose connection end of the conduit means; retaining means for rotatably holding the conduit means and connector means together; and seal means between the exterior surface of the conduit means and the interior surface of the connector means;
(b) rotating the connector means into the engine opening with the conduit means being restricted as to movement relative to the connector means.
PCT/US1983/001383 1982-09-13 1983-09-12 Fluid coupling for engine WO1984001202A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US41696382A 1982-09-13 1982-09-13

Publications (1)

Publication Number Publication Date
WO1984001202A1 true WO1984001202A1 (en) 1984-03-29

Family

ID=23652034

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1983/001383 WO1984001202A1 (en) 1982-09-13 1983-09-12 Fluid coupling for engine

Country Status (3)

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EP (1) EP0120062A4 (en)
CA (1) CA1222000A (en)
WO (1) WO1984001202A1 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US770525A (en) * 1904-09-20 John e
US1861314A (en) * 1930-05-30 1932-05-31 Mcandrew Robert Main ferrule for connecting branch pipes
US2013732A (en) * 1933-06-10 1935-09-10 John T Marvin Connecter
US2480174A (en) * 1947-11-10 1949-08-30 Clyde E Yost Coupling
US2481404A (en) * 1944-02-23 1949-09-06 Curtiss Wright Corp Hydraulic fitting
US2926935A (en) * 1957-03-26 1960-03-01 Aeroquip Corp Adjustable boss fitting
FR1308769A (en) * 1961-10-05 1962-11-09 Elbow swivel hose connector
CH385577A (en) * 1960-04-11 1964-12-15 Ermeto Armaturen Gmbh Rotatable hose connection
GB1083777A (en) * 1965-01-26 1967-09-20 High Temperature Eng Ltd Improvements in banjo-type pipe connections
US4239262A (en) * 1979-05-07 1980-12-16 B. F. Goodrich Pump end swivel for hose

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US770525A (en) * 1904-09-20 John e
US1861314A (en) * 1930-05-30 1932-05-31 Mcandrew Robert Main ferrule for connecting branch pipes
US2013732A (en) * 1933-06-10 1935-09-10 John T Marvin Connecter
US2481404A (en) * 1944-02-23 1949-09-06 Curtiss Wright Corp Hydraulic fitting
US2480174A (en) * 1947-11-10 1949-08-30 Clyde E Yost Coupling
US2926935A (en) * 1957-03-26 1960-03-01 Aeroquip Corp Adjustable boss fitting
CH385577A (en) * 1960-04-11 1964-12-15 Ermeto Armaturen Gmbh Rotatable hose connection
FR1308769A (en) * 1961-10-05 1962-11-09 Elbow swivel hose connector
GB1083777A (en) * 1965-01-26 1967-09-20 High Temperature Eng Ltd Improvements in banjo-type pipe connections
US4239262A (en) * 1979-05-07 1980-12-16 B. F. Goodrich Pump end swivel for hose

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0120062A4 *

Also Published As

Publication number Publication date
EP0120062A1 (en) 1984-10-03
EP0120062A4 (en) 1985-02-18
CA1222000A (en) 1987-05-19

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