US3773186A - Air hose coupling with electrical connector - Google Patents

Air hose coupling with electrical connector Download PDF

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Publication number
US3773186A
US3773186A US00236369A US3773186DA US3773186A US 3773186 A US3773186 A US 3773186A US 00236369 A US00236369 A US 00236369A US 3773186D A US3773186D A US 3773186DA US 3773186 A US3773186 A US 3773186A
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United States
Prior art keywords
hose coupling
air hose
contact members
recited
toggle
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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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US00236369A
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English (en)
Inventor
W Reno
F Temple
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Air Brake Co
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Westinghouse Air Brake Co
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Publication of US3773186A publication Critical patent/US3773186A/en
Assigned to BANKERS TRUST COMPANY reassignment BANKERS TRUST COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: U.S. RAILWAY INC.
Assigned to BANKERS TRUST COMPANY reassignment BANKERS TRUST COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMERICAN STANDARD INC., A DE. CORP.,
Assigned to AMERICAN STANDARD INC., A CORP. OF DE reassignment AMERICAN STANDARD INC., A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE: 12/29/78 DELAWARE Assignors: WESTINGHOUSE AIR BRAKE COMPANY
Assigned to RAILWAY INC. reassignment RAILWAY INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BANKERS TRUST COMPANY
Assigned to AMERICAN STANDARD INC. reassignment AMERICAN STANDARD INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BANKERS TRUST COMPANY
Assigned to CHASE MANHATTAN BANK (NATIONAL ASSOCIATION), THE reassignment CHASE MANHATTAN BANK (NATIONAL ASSOCIATION), THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RAIL ACQUISITION CORP.
Anticipated expiration legal-status Critical
Assigned to WESTINGHOUSE AIR BRAKE COMPANY reassignment WESTINGHOUSE AIR BRAKE COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AMERICAN STANDARD INC., A DE CORP.
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G5/00—Couplings for special purposes not otherwise provided for
    • B61G5/06—Couplings for special purposes not otherwise provided for for, or combined with, couplings or connectors for fluid conduits or electric cables

Definitions

  • ABSTRACT This invention relates to an air hose coupling for use on railway cars.
  • This hose coupling has embodied therein a snap-acting mechanism operated cojointly by a Belleville spring and an inflatable tube member inflated by the fluid under pressure passing through a pair of coupled hose couplings for reciprocating a plurality of electrical contact members within corresponding bores extending inward from the face of each respective hose coupling so that the contact members carried by each respective hose coupling quickly make and break contact with the corresponding contact members carried by the other hose coupling thereby eliminating arcing and burning of these contacts thus considerably lengthening their useful life.
  • this invention to provide an air hose coupling, of the type that embodies therein electrical contacts for establishing electrical circuits that extend from end to end of a train, with a small, compact and novel snap-acting mechanism that is automatically operable upon the supply of fluid under pressure through a pair of coupled air hose couplings or upon uncoupling these couplings, which may be either the manual-type hose coupling or automatic type of hose connector, to move the electrical contacts of one hose coupling into or out of abutting circuit closing relationship with the corresponding contacts of the other hose coupling.
  • the coupling face of a hose coupling is provided with a plurality of arcuately spaced-apart bores in each of which is slidably mounted in insulated relationship therewith an electrical contact, each of which contacts is quickly moved into and out of circuit closing contact with a corresponding electrical contact of the other hose coupling by a novel snap-acting mechanism embodied in the respective hose coupling which is made in two parts so as to provide in one part an annular groove in which is disposed on the respective opposite sides of one end of each of a plurality of inclined toggle arms, one for each contact, a Belleville spring and an inflatable tube member, the other end of each toggle arm being operably connected to the corresponding electrical contact through a leaf-type spring.
  • the fluid under pressure supplied therethrough inflates the tube member so that the inclined toggle levers are moved against the yielding resistance of the Belleville spring and also the leaf-type springs from a first inclined position past a horizontal or center position to an oppositely inclined position.
  • the corresponding leaf-type spring is rendered effective to transmit a force to the respective toggle arm that provides an equal and opposite force that can be resolved into two components one of which acts in a direction to move the contact with a snap action to a second and oppositely inclined position in which each contact abuts the corresponding contact of the other hose coupling.
  • FIG. l is an elevational view, partly in section, of a pair of coupled air hose couplings embodying the invention.
  • FIG. 2 is a cross-sectional view, taken along the line 2 2 of FIG. 1 and looking in the direction of the arrows, showing certain details not made apparent in FIG. 1.
  • FIG. 3 is an elevational view, in section, showing one switch contact and the operating mechanism therefor of one hose coupling in the uncoupled position of this coupling.
  • FIG. 4 is an enlarged view, in section, showing how a train wire is so connected to a movable contact carried by a hose coupling as to be insulated from the coupling.
  • FIG. I of the drawings shows a pair of air hose couplings 1 and 2 in the position they occupy while coupled one to the other. It should be understood that the present invention is applicable to each of a pair of manual hose or pipe couplings, such as is shown and described in U.S. Pat. No. 458,542 issued Aug. 25, I891 to Thomas W. Welsh, and assigned to the assignee of the present application, or to each of a pair of automatic air hose connectors such as is shown and described in the copending application, Ser. No. 178,904, of Fred Temple, filed Sept. 7, 1971, and also assigned to the assignee of the present invention.
  • each of the hose couplings I and 2 comprise two annular members 3 and 4 which are secured together by any suitable means such as, for example, a plurality of hexagon-socket type cap screws 5 that extend through smooth bores 6 provided in the member 4 and have screw-threaded engagement with coaxial internal screw-threaded bottomed boes 7 provided in the member 3.
  • any suitable means such as, for example, a plurality of hexagon-socket type cap screws 5 that extend through smooth bores 6 provided in the member 4 and have screw-threaded engagement with coaxial internal screw-threaded bottomed boes 7 provided in the member 3.
  • a flat surface 8 formed on the lower end of the member 3 abuts a flat surface 9 formed on the upper end of the member 4.
  • a fluid tight seal is provided between these surfaces 8 and 9 by an Q-ring seal 19 that is disposed in an annular groove 11 provided in the flat surface 9 of the member 4.
  • a face R2 Formed, as by machining, at that end of the member 4 remote from the member 3 is a face R2 and a gasket groove 13 in which groove is disposed a resilient gasket 14 which may be identical to the usual hose coupling gasket carried in a groove provided therefor in a standard manual-type hose coupling.
  • a lip 15 having a lip bead to and a lip bearing surface 17.
  • the size and shape of this lip 15, lip bead 16 and lip bearing surface 17 is the same as that of a standard railway hose coupling to enable either the hose coupling 1 or the hose coupling 2, when uncoupled from the other, to be manually coupled to the hose coupling at the end of the hose on a railway car not provided with a hose coupling embodying the present invention when such a car is coupled to a car provided with a hose coupling embodying the present invention.
  • the lip 15 and lip bead 16 of the annular member 4 of one hose coupling are disposed in a groove 18 that, in the case of a manual-type hose coupling as disclosed in the above-mentioned Welsh patent, is provided in a projection i9 that corresponds to the grooved projection 7 of the other hose coupling shown in this Welsh patent, or, in the case of an automatic air hose connector, as disclosed in the above-mentioned copending application of Temple, corresponds to the C-shaped cross-member 38 of the mating head 3 of the other air hose connector shown in this application.
  • the lip 15 and lip bead R6 of one hose coupling and the projection 19 of the other ose coupling in cooperation with the lip 15 and lip bead lb of the other hose coupling and the projection 19 of the one hose coupling serve to lock the two hose couplings l and 2 together so that the gasket Ml carried by each hose coupling is compressed against the corresponding gasket carried by the other hose coupling so that these gaskets form a fluid-tight seal one with the other to prevent leakage of fluid under pressure from the passageway extending through two coupled hose couplings to atmosphere.
  • the annular member :3 of each of the hose couplings 1 and 2 is provided with a plurality of arcuately spaced-apart smooth bores 26 that extend inward from the face 12 to an annular groove 21 that extends inward from the face 9, it being noted that this groove 21 is concentric with the hereinbeforementioned annular groove 11 and of substantially larger diameter. Only two diametrically arranged smooth bores are shown in FlG. 11 thus providing for a single two-wire electrical circuit from car to car through the train. However, it should be understood that several pair of diametrically arranged smooth bores may be provided in the member 4 if it is desired to provide several separate two-wire circuits that extend from car to car through the train.
  • each of the bores 20 Press-fitted into each of the bores 20 is a bushing 22 that is constructed of some suitable electrical insulating material such as, for example, rubber or fiber, it being noted that one end of each of these bushings 22 is flush with the face 12 and the opposite end is flush with the bottom of the annular groove 21.
  • a contact member 23 Slidably mounted in each of the bushings 22 in each of the hose couplings l and 2 is a contact member 23 that is movable into and out of circuit closing contact with a corresponding contact member 23 of the other hose coupling by a spring-biased fluid-pressureactuated snap-acting mechanism. Since the structure of the snap-acting mechanism for each contact is the same, a description of one such mechanism will suffice for all, it being noted that the corresponding structural elements of each such mechanism are denoted by the same reference numerals.
  • annular contact mounting ring 24 Disposed in the annular groove 21 is an annular contact mounting ring 24, it being noted that the outside diameter of this ring 24 is less than the outside diameter of the annular groove 21 and the inside diameter is greater than the inside diameter of the groove 21.
  • the upper end of the contact member 23 abuts the lower side of an annular stepped spacer member 25 that is constructed of some suitable electrical insulating material such as, for example, rubber or fiber. That portion of this stepped spacer member 25 that has the smaller diameter extends through a bore 26 provided therefor in the mounting ring 24.
  • a washer 27 constructed of some suitable insulating material such as, for example, rubber or fiber, is interposed between the annular contact mounting ring 24 and a crimp-type terminal 28.
  • a screw 29 constructed of a suitable electrical conducting material such as, for example, brass, extends through this terminal 28, washer 27, and annular stepped spacer member 25 and has screw-threaded engagement with a screw-threaded bottomed bore 30 provided therefor in the contact member 23.
  • crimp-type terminal 28 Secured to the crimp-type terminal 28 is the bare one end of an insulation-covered train wire 31 that extends through a bore 32 (FIGS. 1 and 3) provided therefor in the member 3 and thence to the other end of the car where it is connected to a contact carried by the hose coupling at this end of the car.
  • a bore 32 (FIGS. 1 and 3) provided therefor in the member 3 and thence to the other end of the car where it is connected to a contact carried by the hose coupling at this end of the car.
  • the annular contact mounting ring 24 is provided with a pair of diametrically arranged tabs 33.
  • the annular contact mounting ring 24 may be constructed of spring steel and have these tabs 33 formed integral therewith, or these tabs 33 may be formed from, for example, spring steel and then secured by any suitable means to the annular mounting ring 24 which may be of any appropriate material other than spring steel.
  • each tab 33 Formed integral with each tab 33 at the outer end thereof is a ball-like member 34 that is received between the jaws of a spring-like clip 35 formed at one end of a toggle arm 36 of a fluid-pressure-actuated snap-acting mechanism which will now be described in detail.
  • Each of the toggle arms 36 which may be constructed of some suitable plastic material such as, for example, delrin extends through a slot 37 provided therefor in the annular member 4, one end of each of these slots 37 opening into the hereinbefore-mentioned annular groove 21 and the opposite end opening into a second annular groove 38 provided in the annular member 4, it being noted that the outside diameter of this groove 38 is substantially less than the inside diameter of the groove 21.
  • each toggle arm 36 has formed integral therewith a thickened portion or elliptical-shaped head 33 that is received in a U-shaped member 40.
  • a U-shaped member 40 is arcuate so that they are slidable along the inside vertical wall, as viewed in FIG. 1, of the annular groove 38.
  • a resilient inflatable annular member 41 is disposed in the annular groove 38 and interposed between the bottom of this groove and the U-shaped members 40.
  • This inflatable member 41 is similar to an automobile tire inner tube and may be constructed of, for example, rubber.
  • a hollow stem 42 that extends through a bore 43 provided therefor in the annular member 4.
  • the outside of this hollow stem 42 is cemented to the wall surface of the bore 43 to prevent the fluid under pressure flowing through the two coupled hose couplings I and 2 from flowing into the annular groove 38 and thence to atmosphere. Any suitable cement or sealing compound may be used to thus secure the outside of the stem 42 to the wall surface of the bore 43.
  • a Belleville spring 44 is disposed in the annular groove 38 so that its smaller end abuts the upper side of the U-shaped members 40 and its larger end abuts the flat face 8 on the annular member 3.
  • the strength of this Belleville spring 44 is such that when the pressure within the inflatable member 41 is atmospheric, as when the hose couplings 1 and 2 are uncoupled, this spring is effective to move the U-shaped members 40 and the toggle arms 36 to the position shown in FIG. 3.
  • the corresponding member 23 is in a position in which its lower end does not extend below the face 12 on the annular member 4. Consequently, this contact member 23 is in a position out of contact with a corresponding contact carried by the other hose coupling, and the circuit between the train wire 31 on one car and the train wire 31 on the adjacent car is open.
  • the toggle arm 36 occupies an inclined position in which it, at a point adjacent the clip 35, abuts a stop 45 formed on the annular member 4 at the upper right-hand end of the slot 37 in this member 4.
  • the toggle arm 36 slopes in a direction that is downward and in the direction of the left hand from the clip that is integral with the right-hand end of this arm, it being noted that the balllike member 34 that is integral with the tab 33 is received in the jaws of this clip 35.
  • each toggle arm will occupy an inclined position in which it slopes in a direction that is downward from the head 39 at the inner end of each toggle arm 36. Accordingly, the stored potential energy in each of the now bent tabs 33 transmits a force to the corresponding toggle arm 36 via the balllike member 34 of the respective tab 33.
  • each toggle arm 36 To maintain the tabs bent or in an instantaneous state of equilibrium, each toggle arm 36 must transmit a force to the respective tab 33 that is equal in magnitude and opposite in direction to the force transmitted to the toggle arm by the tab. Consequently, each toggle arm 36 is transmitting a force to the corresponding ball-like member 34 and tab 33 that is acting in a direction that corresponds to the angle of inclination of the toggle arm 36.
  • This force can be resolved into a horizontal component and a vertical component, this vertical component acting in a downward direction, as viewed in FlG. 3.
  • each member 40 is thus moved vertically downward so that the corresponding toggle arm as is shifted to its horizontal position, the tabs 33 are bent in a direction away from the center of the hose coupling thereby storing potential energy in these tabs.
  • each toggle arm 36 must transmit a force to the respective tab 33 that is equal in magnitude and opposite in direction to the force transmitted to the toggle arm by the tab. Consequently, each toggle arm 36 is transmitting a force to the corresponding ball-like member 34 and and tab 33 that is acting in a direction correspond ing to the angle of inclination of the toggle arm 36.
  • each toggle arm 36 Since each toggle arm 36 has been moved from the inclined position shown in FIGv 1 to a horizontal position and then to an oppositely inclined position which corresponds substantially to the position in which the toggle arm 36 is shown in FIG. 3, it is apparent that each toggle arm 36 is now transmitting a force to the corresponding ball-like member 34 and tab 33 that is acting in a direction that corresponds to the angle of inclination of the toggle arm 36.
  • This force can be resolved into a horizontal component and a vertical component, this vertical component acting in an upward direction, as viewed in F165. 3 and 4, and increasing in magnitude as the toggle arm 36 is rocked counterclockwise about the stop 46 by the U-shaped member 40 as the Belleville spring 44 returns to the position shown in FIG. 3.
  • An air hose coupling for a railway car having a fluid pressure conduit and a plurality of electrical conduits extending from end to end thereof connectable to an air hose coupling at the adjacent end of another railway car having a fluid pressure conduit and a plurality of electrical conduits extending from end to end of said another car, said air hose coupling comprising:
  • a hollow hose coupling body having a face provided with an opening for the passage therethrough of fluid under pressure from said fluid pressure conduit and a plurality of arcuately-spaced bores disposed about said opening, one end of each of which bores terminates at said face,
  • fluid pressure means responsive to fluid under pressure supplied through said air hose coupling subsequent to being coupled to another air hose coupling for moving said contact members in a circuit closing direction against the yielding resistance of said spring means
  • toggle means interposed between said spring means and said fluid pressure means and resiliently connected to said contact members so as to be effective accordingly as said fluid pressure means provides a force thereon that exceeds or is less than a force provided thereon by said spring means to cause snap-action movement of said contact members respectively in their circuit-closing and circuit-opening directions.
  • hose coupling body comprises a pair of hollow casing sections, one of said casing sections having said face formed thereon and being provided with said plurality of arcuately-spaced bores extending inward from said face, in each of which bores is slidably mounted a contact member in insulated relationship with said one casing section, and the other of said casing sections being provided with a corresponding number of bores through each of which extends one of said plurality of electrical conduits for connection with a corresponding contact member, said one casing section being removably secured to said other casing section.
  • An air hose coupling as recited in claim ll, further characterized by a bushing of electrical insulating material disposed in each of said arcuately spaced bores in said hose coupling body to electrically insulate each of said contact members from said hose coupling body.
  • An air hose coupling as recited in claim 1, further characterized in that said hollow hose coupling body is provided with a pair of concentric annular grooves and a plurality of slots extending between said grooves, the other end of each of said plurality of arcuately-spaced bores opening into one of said grooves, said spring means and said fluid pressure means being disposed in the other of said grooves, and said toggle means extending through said slots and operatively connecting said contact members with said spring means and said fluid pressure means for movement thereby.
  • An air hose coupling as recited in claim 1, further characterized in that an annular member has each of said contact members insulated therefrom and removably secured thereto for movement therewith and is provided with a plurality of resilient tabs, and said toggle means comprises a plurality of toggle arms, one end of each of said arms being pivotally connected to a corresponding one of said tabs and the opposite end disposed between said spring means and said fluid pressure means, said arms being so arranged as to be moved, by said fluid pressure means in response to the supply of fluid under pressure thereto, from one inclined position to an oppositely inclined position to effect a change in the direction of the force transmitted through each of said arms to a corresponding one of said resilient tabs whereby a component of each of said forces is transmitted through a corresponding tab to move said annular member and said contact members with a snap-action from one position to another position, and to be moved by said spring means in response to the release of fluid under pressure from said fluid pressure means from said oppositely inclined position to said one inclined position to effect a change in
  • a plurality of resilient tabs each connected at one end to a corresponding contact member and having at the other end a ball-like member received in the spring-like clip of a corresponding toggle arm, said resilient tabs each being effective to be deflected by a force transmitted thereto from said corresponding toggle arm in response to movement of said U-shaped members in said opposite directions, and when so deflected to transmit a component of said force to said corresponding contact member to cause said snap-action movement of all of said contact members in each direction to occur simultaneously.
  • An air hose coupling as recited in claim 1, further characterized in that said fluid pressure means comprises an annular resilient inflatable member, circular in cross-section when inflated, and having integral therewith a hollow stem opening at one end into the interior thereof and at the other end into said hollow hose coupling body whereby fluid under pressure supplied through two coupled hose couplings flows to the interior of said inflatable member to cause the inflation thereof.
  • An air hose coupling as recited in claim 2, further characterized in that said one casing section is provided with two parallel spaced-apart faces, one of said faces having a pair of concentric grooves formed therein, said grooves being connected by a plurality of arcuately arranged slots for receiving said toggle means, the groove of larger diameter having opening thereinto said plurality of arcuatelyspaced bores, and the groove of smaller diameter having disposed therein said spring means and said fluid pressure means, each of which is effective via said toggle means to effect snap-acting movement of said contact members in a direction opposite that of the other.
  • An air hose coupling as recited in claim 2, further characterized in that said one hollow casing section has formed therein adjacent said face a groove conforming in configuration to the gasket groove ofa standard hose coupling.
  • An air hose coupling as recited in claim 2, further characterized in that said one hollow casing section has formed integrai therewith a lip conforming in configuration to the lip of a standard hose coupling.
  • An air hose coupling as recited in claim 2, further characterized in that said one hollow casing section has formed integral therewith a lip conforming in configuration to the lip of a standard hose coupling and is provided on the interior thereof adjacent said face with a groove conforming in configuration to the gasket groove of a standard hose coupling.
  • An air hose coupling as recited in claim 4, further characterized in that said toggle means extending through said slots comprises a toggle arm disposed in each of said slots, and each end of each slot constitutes a fulcrum for the corresponding toggle arm, each toggle arm rocking about the fulcrum at one end of the corresponding slot to cause said snap-action movement of said contact members in their circuit-closing direction and rocking about the fulcrum at the other end of the corresponding slot to cause said snap-action movement of said contact members in their circuit-opening direction.
  • An air hose coupling as recited in claim 5, further characterized in that said annular member and said plurality of tabs constitute a single element formed from spring steel.
  • annular member and said plurality of tabs constitute separate elements constructed from different materials, said tabs being formed of spring steel and secured to said annular member.
  • An air hose coupling as recited in claim 5, further characterized by electrical insulating means interposed between each of said removable contact members and said annular member.
  • An air hose coupling as recited in claim 5, further characterized by electrical insulating means interposed between each of said plurality of electrical conduits and said annular member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
US00236369A 1972-03-20 1972-03-20 Air hose coupling with electrical connector Expired - Lifetime US3773186A (en)

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US23636972A 1972-03-20 1972-03-20

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4957208A (en) * 1989-05-24 1990-09-18 American Standard Inc. Multiple contact electrical connector portion for an automatic railway coupler
US5442810A (en) * 1992-11-24 1995-08-15 Qualcomm Incorporated Tractor-trailer electronic transmission path
US5586668A (en) * 1994-12-14 1996-12-24 Westinghouse Air Brake Company Imbedded electrical connector
US5658159A (en) * 1995-10-27 1997-08-19 Biw Connector Systems, Inc. Connector system and methods
US6030244A (en) * 1996-03-15 2000-02-29 Biw Connector Systems, Inc. Connectors and methods for their use
US6039409A (en) * 1997-10-08 2000-03-21 Westinghouse Air Brake Company Shutoff valve assembly
US6290079B1 (en) 1999-03-17 2001-09-18 Sharma & Associates, Inc. Coupler for railroad cars
US20080203726A1 (en) * 2005-07-28 2008-08-28 Breeser David L Data Communication System Embedded In A Fluid Dispensing Line With Limited Travel Swivel
US20110186139A1 (en) * 2007-04-27 2011-08-04 Carefusion 303, Inc. Electronically activated access valve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5647945Y2 (ja) * 1973-12-26 1981-11-10
JPS5178171A (ja) * 1974-12-27 1976-07-07 Fujitsu Ltd Handotaisochiseizoyohandotaiueha

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1422241A (en) * 1922-07-11 Electric multiple-connection plug
US1430703A (en) * 1919-05-22 1922-10-03 Samuel C Mcconahey Automatic car, train-pipe, and electric coupling
US1608732A (en) * 1921-11-29 1926-11-30 Westinghouse Air Brake Co Electric train-line coupler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1422241A (en) * 1922-07-11 Electric multiple-connection plug
US1430703A (en) * 1919-05-22 1922-10-03 Samuel C Mcconahey Automatic car, train-pipe, and electric coupling
US1608732A (en) * 1921-11-29 1926-11-30 Westinghouse Air Brake Co Electric train-line coupler

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4957208A (en) * 1989-05-24 1990-09-18 American Standard Inc. Multiple contact electrical connector portion for an automatic railway coupler
US5442810A (en) * 1992-11-24 1995-08-15 Qualcomm Incorporated Tractor-trailer electronic transmission path
US5586668A (en) * 1994-12-14 1996-12-24 Westinghouse Air Brake Company Imbedded electrical connector
AU693509B2 (en) * 1994-12-14 1998-07-02 Westinghouse Air Brake Company Imbedded electrical connector
US5658159A (en) * 1995-10-27 1997-08-19 Biw Connector Systems, Inc. Connector system and methods
US6030244A (en) * 1996-03-15 2000-02-29 Biw Connector Systems, Inc. Connectors and methods for their use
US6039409A (en) * 1997-10-08 2000-03-21 Westinghouse Air Brake Company Shutoff valve assembly
AU745658B2 (en) * 1997-10-08 2002-03-28 Westinghouse Air Brake Company Angle cock with junction box
US6290079B1 (en) 1999-03-17 2001-09-18 Sharma & Associates, Inc. Coupler for railroad cars
US20080203726A1 (en) * 2005-07-28 2008-08-28 Breeser David L Data Communication System Embedded In A Fluid Dispensing Line With Limited Travel Swivel
US20110186139A1 (en) * 2007-04-27 2011-08-04 Carefusion 303, Inc. Electronically activated access valve
US8505871B2 (en) * 2007-04-27 2013-08-13 Carefusion 303, Inc. Electronically activated access valve
US8800583B2 (en) 2007-04-27 2014-08-12 Carefusion 303, Inc. Method of controlling fluid flow with an electronically activated access valve

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Publication number Publication date
JPS4912512A (ja) 1974-02-04
JPS5027250B2 (ja) 1975-09-06
IT984411B (it) 1974-11-20

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AS Assignment

Owner name: BANKERS TRUST COMPANY, NEW YORK

Free format text: SECURITY INTEREST;ASSIGNOR:U.S. RAILWAY INC.;REEL/FRAME:004905/0255

Effective date: 19880624

Owner name: BANKERS TRUST COMPANY, 4 ALBANY STREET, 9TH FLOOR

Free format text: SECURITY INTEREST;ASSIGNOR:U.S. RAILWAY INC.;REEL/FRAME:004905/0255

Effective date: 19880624

Owner name: BANKERS TRUST COMPANY

Free format text: SECURITY INTEREST;ASSIGNOR:AMERICAN STANDARD INC., A DE. CORP.,;REEL/FRAME:004905/0035

Effective date: 19880624

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