Source: http://www.google.com/patents/US5139049?dq=7253017
Timestamp: 2017-04-26 10:24:22
Document Index: 444837212

Matched Legal Cases: ['art 12', 'art 12', 'arts 10', 'arts 10', 'arts 10', 'arts 10', 'arts 10']

Patent US5139049 - Refrigeration system service adapter - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA refrigeration system service coupling having a valved service adapter employing a spring biased sleeve valve to maintain the adapter valve in a closed no flow condition except when the service adapter is properly connected to a charging port of predetermined configuration and capable of retaining the...http://www.google.com/patents/US5139049?utm_source=gb-gplus-sharePatent US5139049 - Refrigeration system service adapterAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS5139049 APublication typeGrantApplication numberUS 07/614,312Publication dateAug 18, 1992Filing dateNov 15, 1990Priority dateNov 15, 1990Fee statusLapsedAlso published asCA2055679A1, CA2055679C, DE4137368A1, DE4137368C2Publication number07614312, 614312, US 5139049 A, US 5139049A, US-A-5139049, US5139049 A, US5139049AInventorsJon A. Jensen, Steven M. Knowles, Robert A. LaipplyOriginal AssigneeAeroquip CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (6), Referenced by (62), Classifications (14), Legal Events (13) External Links: USPTO, USPTO Assignment, EspacenetRefrigeration system service adapter
US 5139049 AAbstract
A refrigeration system service coupling having a valved service adapter employing a spring biased sleeve valve to maintain the adapter valve in a closed no flow condition except when the service adapter is properly connected to a charging port of predetermined configuration and capable of retaining the service adapter sleeve valve to permit opening of the service adapter valve upon the service adapter being properly connected to the charging port.
1. A coupling particularly suitable for servicing refrigeration systems comprising, in combination, a service adapter part, a charging port part, axial flow passages defined in each of said parts, a conduit fitting attached to said service adapter part in communication with said passage thereof, releasable locking means mounted upon one of said parts adapted to selectively lock to the other part to lock said parts in an aligned interconnected relationship, a manually actuated axially displaceable valve within said service adapter part, means for axially displacing said valve between first and second axial position, a self-sealing valve located within said charging port part passage, spring means biasing said self-sealing valve toward a closed condition, and interlock means located within said service adapter passage maintaining said service adapter part valve in a closed condition regardless of the position of said valve, said interlock means engaging said charging port part when said service adapter part is fully connected on said charging port part and such engagement deactivating aid interlock means whereby said manually actuated valve controls fluid flow through said service adapter part passage, said interlock means within said service adapter part comprising an annular sleeve valve axially displaceable within said service adapter part passage, spring means within said service adapter part passage biasing said sleeve valve into a closed relationship with said adapter part valve, said sleeve valve adapted to engage said charging port part upon said parts being fully interconnected, said engagement axially retaining said sleeve valve against displacement by said spring means.
2. In a coupling suitable for servicing refrigeration systems as in claim 1, seal means defined upon said service adapter part valve, an annular valve seat defined upon said sleeve valve, said sleeve valve spring means biasing said sleeve valve valve seat toward engagement with said valve seal means.
3. In a coupling suitable for servicing refrigeration systems as in claim 2, said service adapter valve including an axial extension adapted to engage and displace said charging port part self-sealing valve upon positioning of said service adapter part valve in said second position upon said parts being fully interconnected.
4. In a service adapter for adding refrigerant to a refrigeration system comprising a service adapter body, an axial flow passage defined in said body, a conduit fitting defined on said service adapter body in communication with said passage, releasable locking means within said body adapted to selectively lock said body in an aligned interconnected relationship with a compatible charging port, the improvement comprising a manually actuated axially displaceable valve within said service adapter body, means for axially displacing said valve between first and second axial positions, interlock means located within said service adapter body passage maintaining said manually actuated valve in a closed condition regardless of the axial position of said manually actuated valve, said interlock means engaging a charging port when said service adapter body is fully connected thereto and such engagement deactivating said interlock means whereby said manually actuated valve controls fluid flow through said service adapter body passage, said interlock means within said service adapter body comprising an annular sleeve valve axially displaceable within said service adapter body passage, spring means within said service adapter body passage biasing said sleeve valve into a closed relationship with said manually actuated valve, said sleeve valve adapted to engage a charging port upon said service adapter body being fully interconnected thereto, said engagement axially retaining said sleeve valve against displacement by said spring means.
5. In a service adapter for servicing refrigeration systems as in claim 4, seal means defined upon said manually actuated valve, an annular valve seat defined upon said sleeve valve, said sleeve valve spring means biasing said sleeve valve valve seat toward engagement with said valve seal means.
6. In a service adapter for servicing refrigeration systems as in claim 4, an axial charge port valve engaging extension defined on said manually actuated valve extending through said sleeve valve.
Servicing couplings are commonly employed with refrigeration systems to permit the charging and evacuation of the refrigeration circuit as taught in assignee's U.S. Pat. Nos. 4,892,117 and 4,921,013. Such couplings, conventionally, utilize a charging port having a Schrader valve, and a service adapter having a threaded connector for cooperating with the charging port attached thereto having a fixed valve actuator for displacing the Schrader valve and permitting refrigerant to flow through the coupling and into the refrigeration system.
Schrader valve type servicing systems rely upon a spring biased valve within the Schrader valve to automatically close upon the service adapter being removed from the charging port. The flow of refrigerant through the service adapter is generally controlled by a manually operated valve mounted upon the refrigerant storage bottle or cylinder.
It is an object of the present invention to provide a refrigeration service coupling utilizing a charging port and a service adapter wherein the charging port and service adapter each include self-sealing valves operated by components associated with the other coupling part thereby minimizing the likelihood of opening the valves until the proper coupling interconnection has taken place.
Another object of the invention is to provide a refrigeration service coupling employing a self-sealing service adapter having both a manually operated valve serially associated with an automatically operated sleeve valve which can only be opened upon the service adapter being properly attached to the charging port.
An additional object of the invention is to provide a refrigeration service coupling employing a charging port connected to the refrigeration circuit and having a self-closing poppet type valve wherein the valve operation and movement is accurately controlled to assure proper valve sealing, and the charging port is rendered substantially tamper proof.
In the practice of the invention the refrigeration service coupling basically consists of a charging port permanently attached to the refrigeration system and in communication therewith. The charging port incorporates a self-sealing, spring biased, valve biased into the closed no flow condition.
The service adapter is connected by a flexible hose or the like to a refrigerant supply source, such as a pressurized bottle or cylinder. The service adapter includes a manually positionable valve having a seal axially displaceable within the adapter fluid passage. A spring biases a sleeve valve into engagement with the manually operated valve seal wherein the spring will maintain the adapter passage closed under all conditions when the adapter is not connected to the charging port.
A quick-release interconnection is preferably utilized between the charging port and service adapter, and upon a complete interconnection therebetween the automatic spring biased closing action of the service adapter sleeve valve is rendered inoperative by engagement of the sleeve valve with the charging port. Thereupon, manual actuation of the service adapter valve permits the valve to be opened and refrigerant supplied to the refrigeration circuit through the charging port as the adapter valve includes an extension for displacing the charging port self-sealing valve to an open condition as the service adapter valve is also opened.
The charging port communicating with the refrigeration circuit includes a spring biased poppet valve reciprocally positioned within a cylindrical passage. The valve is provided with axially extending passages and includes a fluted stem surrounded by a compression spring. The close tolerances between the spring and the stem maintains a coaxial alignment of the charging port valve within its associated passage insuring dependable operation, and the compression spring, once installed, is anchored in position by a swaging or metal deformation of the charging port rendering the valve dependable and substantially tamper proof.
FIG. 1 is a perspective view of a refrigeration service coupling in accord with the present invention, the service adapter being separated, and in alignment with, the charging port communicating with the refrigeration circuit illustrated,
FIG. 2 is an exploded perspective view of the charging port,
FIG. 3 is an exploded perspective view of the service adapter,
FIG. 4 is a sectional view of the charging port and the service adapter in an aligned but separated mode, the valves of both coupling parts being closed,
FIG. 4A is an enlarged detail of the portion of the charging port indicated in FIG. 4,
FIG. 5 is a sectional view of the charging port and service adapter fully connected, the adapter valve and the charging port poppet valve being illustrated in the closed no flow mode,
FIG. 6 is a sectional view similar to FIG. 5 illustrating both coupling part valves in an open mode, and
FIG. 7 is a sectional view of the service adapter, the manual valve being positioned inwardly to the maximum extent, and the sleeve valve being displaced its maximum extent toward the service adapter open end.
With reference to FIG. 1, the service adapter is illustrated at 10, and is intended to be selectively connected to the charging port, generally indicated at 12, which is mounted upon the refrigeration circuit component 14 as will be later described. The circuit component 14 may constitute tubing, a reservoir, or other component normally found in a refrigeration circuit such as commonly used for air conditioning. It is to be understood that the primary purpose of the apparatus is for the servicing of refrigeration systems such as charging the systems with the proper refrigerant, or purging the refrigerant from the refrigeration system.
Refrigerant is supplied to the service adapter 10 by a flexible supply hose, 16, typically connected to a bottle or cylinder, not shown, containing pressurized refrigerant.
Referring now to FIG. 4, the adapter body 18 is of a generally cylindrical configuration and includes a central cylindrical passage 20 having a coaxial threaded bore portion 22, a smooth bore spring chamber portion 24, a larger diameter valve sleeve chamber portion 26, and the passage terminates in the open charging port part receiving connection end 28 which selectively receives the charging port 12.
The passage portion 26 includes an inner elastomeric annular seal 30 and an outer elastomeric seal 32 for purposes later described.
The service adapter 10 is connected to the charging port 12 by an annular locking sleeve 34 slidably and axially displaceable upon the exterior of the end 28. The locking sleeve 34 is adapted to radially position the plurality of detent balls 36 located within the radial holes 38 defined in the body 18. The holes 38, inwardly, are of a diameter slightly less than the diameter of the ball detents preventing the balls from inwardly falling radially inward from the holes as is well known. The locking sleeve 34 is biased toward the connection end 28 by the compression spring 40, and a stop clip 42 located within a recess in body 18 selectively engages the conical cam surface 44 to limit movement of the locking sleeve 34 to the left. A cylindrical detent ball retaining surface 46 is defined upon the locking sleeve 34 which is radially aligned with balls 36 and biases the balls inwardly when the service adapter 10 and charging port 12 are interconnected.
The refrigerant supply hose 16 communicates with the passage 20 by means of the radial hose fitting 48 brazed to the body 18 whereby refrigerant will be supplied to the passage 20.
A manual valve 50 is located within the passage portions and includes a threaded portion 52 for cooperating with the bore threads 22. The valve 50 may be manually rotated in either direction by the knob 54 whereby rotation of the knob and valve will axially displace the valve components within the passage portions. An elastomeric annular seal 56 located between appropriate shoulder portions seals the valve against refrigerant escape past the threads 22 and 52.
At its outer end, the valve 50 includes an enlarged valve head 58 having a concentric groove defined thereon for receiving the elastomeric seal ring 60. The outer end of the valve 50 includes the axial extension 62 which extends well beyond the valve head 58.
An annular sleeve valve 64 of cylindrical configuration is axially displaceable within the passage chamber 26, and is sealed thereto by the engagement with seal 30. The sleeve valve 64 includes an outer end 66, and a base 68 is defined adjacent the inner end of the sleeve valve having a conical concentric valve seat 70 defined therein adapted to seal with the valve head seal ring 60. A compression spring 72 located within chamber 24 engages the sleeve valve 64 and baises the sleeve valve toward the connection end 28 and the spring 72 insures that, under most conditions, the valve seat 70 engages the seal ring 60 in a fluid tight manner.
The charging port 12 includes an annular cup 74 having a stud 76 which is brazed, soldered, or otherwise received within the hole 78 defined in the refrigeration circuit component 14 upon which the coupling part 12 is mounted. Interiorly, the cup is threaded at 80.
Charging port 12 includes a body 82 having a cylindrical bore 84, and the bore 84 includes a shoulder at 86, and a reduced diameter cylindrical valve seat 88 having a conical shoulder 90. The open end of the body 82 may be internally threaded at 92 to receive a dust cap, the body has an end 93, and the exterior of the body 82 is threaded at 94 whereby the body 82 may be located within the cup 74 by threads 80, and sealed thereto by seal 96. An annular enlarged shoulder 95 defined o the exterior of body 82 serves to cooperate with detents 36 as later described.
An axially displaceable poppet valve 98 is mounted within bore 84 and includes a head 100 having a groove defined therein for receiving the annular elastomeric seal 102. When the valve 98 is closed, the seal 102 will be received within the cylindrical seat 88 and seal the part 12 against fluid flow therethrough. When the poppet valve 98 is closed the valve shoulder 104 will engage the bore shoulder 90.
The poppet valve 98 includes a stem 105 defined by four axially extending flutes 106, FIG. 2, each having a maximum diameter at 108 and an inner diameter or edge 110 of a diametrical dimension less than the diameter 108. A compression spring 112 circumscribes the flute diameters 110 and has an internal diameter only slightly larger than the flute diameters 110. The external diameter of the spring 112 is only slightly less than the diameter of the bore 84, and the compression spring 112 is interposed between the flute shoulders defined by the diameters 108 and 110, and a inwardly radially deformed annular lip 114 formed of the material of the body 82.
When assembling the charging port 12, the lip 116 is of a cylindrical configuration providing an inner diameter equal to that of bore 84. Accordingly, the poppet valve 98 and the spring 112 may be easily inserted within the bore 84. Once the poppet valve and spring are located within the bore 84, the cylindrical lip may be radially deformed inwardly as shown in detail in FIG. 4A, and this inward deflection of the lip 114 comprises an effective anchor or shoulder against which the spring 112 may bear, and also, renders the components of the body 12 substantially tamper proof as the poppet valve 98 and spring 112 cannot be removed from the body 82 without re-deforming the lip 114.
When it is desired to attach the service adapter 10 to the charging port 12 for the purpose of charging the refrigeration circuit component 14 with refrigerant, or for removing the refrigerant from the component 14, the service coupling parts 10 and 12 will be aligned as shown in FIGS. 1 and 4 after the dust cap 116 has been removed from threads 92. The locking sleeve 34 is axially displaced toward the knob 54 against the spring 40 so as to radially align the locking sleeve cam surface 44, and its adjacent maximum clearance, with the balls 36 permitting the ball detents to be outwardly radially displaceable as the adapter 10 is inserted over the charging port 12 and the balls pass over the enlarged diametrical shoulder 95 defined on the body 82. After the ball detents 36 have passed over the shoulder 95 the locking sleeve 34 is permitted to return to the position shown in FIG. 5 wherein surface 46 radially aligns with the balls 36 and the cam surface 44 engages the stop clip 42. Thereupon, the service adapter 10 will be locked to the charging port 12 as shown in FIG. 5 and the nose of body 82 will be sealed to body 18 by seal ring 32.
With reference to FIG. 5, it will be noted that the sleeve valve end 66 is just engaging the charging port body end 93 and the end of the extension 62 of the manual valve 50 is about to engage the outer end of the poppet valve 98. However, under the conditions shown in FIG. 5 the seal ring 60 is engaging the valve seat 70 and the poppet valve seal 102 is sealingly received within the seat 88, and both the parts 10 and 12 are sealed against fluid flow therethrough.
Upon rotation of the valve 50 clockwise by the knob 54 to displace the valve 50 to the left, FIG. 6, the extension 62 will engage and open the poppet valve 98 as illustrated, and the seal 102 is fully removed from the seat surface 88. Simultaneously, the valve head seal ring 60 separates from the valve sleeve seat 70 and refrigerant may flow through the passage portions of the body 18 into the body 82 and through the flutes of the poppet valve 98 into the refrigeration circuit component 14.
Under the above "valves open" condition it will be appreciated that movement of the sleeve valve 64 to the left, FIG. 6, under the influence of the spring 72, is prevented due to engagement of the sleeve valve end 66 with the end 93 of the charging port body 82.
With the components in the valves open condition shown in FIG. 6 the flow of refrigerant through the service coupling parts 10 and 12 takes place, in the desired direction, and when it is desired to terminate refrigerant flow the knob 54 of manual valve 50 is rotated in a counterclockwise direction to return the components to the positions shown in FIG. 5. The poppet valve seal 102 will again be received within seat 88, and the seal ring 60 will engage the valve seat 70. Thereupon, the operator may manually displace the locking sleeve 34 to the right, FIG. 5, to remove retainer surface 46 from the ball detents 36 permitting the balls to be displaced outwardly as they ride over the backside conical surface of the shoulder 95, and the coupling parts 10 and 12 may be fully separated with the valves of both parts being fully closed without significant loss of refrigerant to the atmosphere.
If the manual valve 50 is rotated in a clockwise "open" direction without the service adapter 10 being attached to the charging port 12 as described above, the movement of the manual valve 50 to the left, FIG. 7, permits the sleeve valve 64 to move toward the charging port connection end 28 under the influence of the compression spring 72. However, as the spring 72 will maintain engagement of the valve seat 70 upon the seal ring 60 no flow of refrigerant from the passage 20 is possible, and the valve 50 and sleeve valve 64 remain closed, even though the valve 50 has been rotated to its maximum "open" position. This safety feature eliminates the possibility of inadvertent discharge of refrigerant into the atmosphere.
Refrigeration servicing apparatus as described above will normally be used with refrigeration systems using environmentally acceptable refrigerants such as R 134A. As the interconnect between the parts 10 and 12 is of a quick-connect type, and does not utilize threads, it is very difficult for a service person to inadvertently attach the service adapter 10 upon an improper charging port, such as a Schrader valve. Even if the service person endeavored to connect the service adapter 10 to an improper charging port such charging port would not be properly dimensioned to engage the end 66 of the sleeve valve 64 and, hence, even if the manual valve 50 was rotated to its open position as shown in FIG. 7 the sleeve valve 64 would prevent fluid flow through the service adapter 10. Accordingly, a refrigeration service system utilizing the aforedescribed service coupling parts eliminates the inadvertent intermixing of incompatible refrigerants, reduces the likelihood of malfunctioning of the service coupling parts, and prevents inadvertent release of refrigerant to the atmosphere even if the manual valve 50 is opened before the service coupling parts are fully connected.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS2739612 *Mar 7, 1955Mar 27, 1956Hansen Mfg CoProcessing connectorUS3687161 *Jun 1, 1970Aug 29, 1972Hansen MfgQuick connect valve couplingUS4502662 *Feb 14, 1983Mar 5, 1985Imperial Clevite Inc.Shrouded fluid couplingUS4892117 *Nov 10, 1988Jan 9, 1990Aeroquip CorporationRefrigeration couplingUS4921013 *Aug 21, 1989May 1, 1990Aeroquip CorporationCoupling adapterUS5076324 *Oct 25, 1990Dec 31, 1991Seymour HermanQuick disconnect coupling* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS5215122 *Dec 9, 1991Jun 1, 1993Aeroquip CorporationQuick disconnect fluid coupling with integral pressure relief featureUS5293902 *Jun 7, 1993Mar 15, 1994Tif Instruments, Inc.Quick-disconnect fluid couplingUS5339862 *Jul 29, 1993Aug 23, 1994Aeroquip CorporationRefrigeration system service adapterUS5370359 *Nov 4, 1993Dec 6, 1994Mastercool, Inc.Manual seal couplerUS5409039 *Mar 18, 1993Apr 25, 1995Mock; Bruno A.Regulating mechanism for the service adapter of a service coupling cooperating with a charging port partUS5415200 *Jun 8, 1994May 16, 1995Aeroquip CorporationRefrigeration system service adapterUS5450875 *Jul 28, 1993Sep 19, 1995White Industries, LlcFor a refrigerant service line coupling deviceUS5540259 *May 5, 1995Jul 30, 1996Keck; DieterAutomatically releasable shut-off couplingUS5603353 *Nov 17, 1995Feb 18, 1997Essman Screw Products, Inc.Quick disconnect couplingUS5611923 *Jul 12, 1995Mar 18, 1997Vickers, Inc.Filter assembly having quick connect/disconnect sealing valve meansUS5893391 *Nov 10, 1997Apr 13, 1999Aeroquip CorporationCoupling latchUS6041818 *Aug 25, 1998Mar 28, 2000Aeroquip CorporationValve assemblyUS6050295 *Jun 4, 1998Apr 18, 2000Fastest, Inc.High flow valved fittingUS6250603 *Nov 24, 1999Jun 26, 2001Prime Solutions, LlcAdjustable device for opening service valvesUS6269840Dec 10, 1996Aug 7, 2001American Standard International Inc.Valve-in-valve body, vent port and methodUS6273397 *Dec 27, 1999Aug 14, 2001Schrader-Bridgeport International, Inc.Air conditioner access and service fittingsUS6276386 *Nov 24, 1997Aug 21, 2001Kvaerner Oilfield Products, Inc.Charging device for hydraulic systemsUS6296228Jun 28, 2000Oct 2, 2001Prime Solutions, LlcService deviceUS6305081Nov 6, 1998Oct 23, 2001American Standard International Inc.Installing and servicing an HVAC systemUS6450199 *Jan 28, 2002Sep 17, 2002Eaton Aeroquip, Inc.Refrigeration system service couplingUS6533327Apr 19, 2000Mar 18, 2003Aeroquip-Vickers International GmbhQuick-fitting couplingUS6637460Sep 13, 2002Oct 28, 2003Eaton CorporationDual function service couplingUS6802492 *Sep 30, 2002Oct 12, 2004Robert A. PayneQuick coupler adapterUS6837064Dec 23, 2002Jan 4, 2005Prime Solutions LlcCoupling for servicing a pressurized systemUS6848670 *May 30, 2002Feb 1, 2005Parker-Hannifin CorporationAccess port (suitable for fluid/refrigerant system)US6901947Nov 8, 2001Jun 7, 2005Fastest Inc.Rapid evacuation and charging system, and apparatus and methods relating theretoUS7096685Dec 30, 2004Aug 29, 2006Prime Solutions LlcCoupling for servicing a pressurized systemUS7237760 *Jan 28, 2006Jul 3, 2007Ching-Su ChiuCheck valve actuatorUS7757712 *May 9, 2005Jul 20, 2010Msa Auer GmbhCoupling device for a compressed gas cylinderUS7762279Jul 18, 2008Jul 27, 2010Snap-Tite Technologies, Inc.Threaded coupling with flow shutoffUS8313123Nov 18, 2009Nov 20, 2012Hinkle Derek HDevice for capping and sealing refrigeration service valve fittings of quick disconnect typeUS8807525 *May 3, 2012Aug 19, 2014Sun-Wounder Industrial Co., LtdQuick-release couplingUS9404622 *Jan 28, 2013Aug 2, 2016Honda Motor Co., Ltd.Filling port structure for pressure fluidUS9574809 *Jul 18, 2012Feb 21, 2017Mahle International GmbhApparatus and method for recovering refrigerant through a double conduit connectionUS20020096209 *Nov 8, 2001Jul 25, 2002Fastest, Inc.Rapid evacuation and charging system, and apparatus and methods relating theretoUS20030015679 *May 30, 2002Jan 23, 2003Haunhorst Gregory A.Access port (suitable for fluid/refrigerant system)US20050115610 *Dec 30, 2004Jun 2, 2005Prime Solutions LlcCoupling for servicing a pressurized systemUS20080061259 *Sep 8, 2006Mar 13, 2008Toyota Engineering & Manufacturing North America, Inc.Anti-leak adaptor for use in a vehicle air conditioning system testUS20080236687 *May 9, 2005Oct 2, 2008Peter KadowCoupling Device For A Compressed Gas CylinderUS20090058084 *Sep 5, 2007Mar 5, 2009Green Ronald DAdaptor for quick connect coupling in water supply systemUS20110041522 *Aug 4, 2010Feb 24, 2011Vincent CarrubbaAdapter system and methodUS20120324920 *Feb 2, 2012Dec 27, 2012Vincent CarrubbaServicing devices and methods of use thereofUS20130025717 *Jul 18, 2012Jan 31, 2013Leif ThyssenApparatus and method for recovering fluid refrigerantUS20130204215 *Mar 15, 2013Aug 8, 2013Bioflo, LlcValve for Regulating the Flow of A LiquidUS20140374417 *Jan 28, 2013Dec 25, 2014Honda Motor Co., Ltd.Filling port structure for pressure fluidUS20150362111 *Aug 24, 2015Dec 17, 2015Engineered Controls International, LlcRapid-connect couplerCN100398899CJul 2, 2003Jul 2, 2008伊顿公司Dual function service couplingCN104832657A *Apr 14, 2015Aug 12, 2015冈山精工(中山)有限公司Improved-sealing-ring-setting-based stop valve for air conditionerEP0733184A1 *Oct 19, 1994Sep 25, 1996Aeroquip CorporationRefrigeration system service adapterEP0733184A4 *Oct 19, 1994Jan 28, 1998Aeroquip CorpRefrigeration system service adapterEP1128139A1 *Feb 24, 2000Aug 29, 2001Zanotti S.p.A.Refrigerating system for refrigerator motor vehiclesEP1223392A1 *Dec 24, 2001Jul 17, 2002Schrader Bridgeport International, IncAir conditioner charge valveEP1375995A1Jun 23, 2003Jan 2, 2004Pres-Block S.P.A.Adapter for connection to a cooling systemWO1995004238A1 *Feb 7, 1994Feb 9, 1995Aeroquip CorporationRefrigeration system service adapterWO1995016163A1 *Oct 19, 1994Jun 15, 1995Aeroquip CorporationRefrigeration system service adapterWO1995030106A1 *Feb 23, 1995Nov 9, 1995Aeroquip CorporationQuick connect air-conditioning couplingWO1998026203A2Nov 20, 1997Jun 18, 1998Aeroquip CorporationValve-in-valve body, vent port and methodWO1999002914A1 *May 21, 1998Jan 21, 1999Aeroquip CorporationCoupling latchWO1999063252A1 *Jun 3, 1999Dec 9, 1999Fastest, Inc.High flow valved fittingWO2003064914A1 *Jan 28, 2003Aug 7, 2003Eaton Aeroquip, Inc.Refrigeration system service couplingWO2004005787A2Jul 2, 2003Jan 15, 2004Eaton CorporationDual function service couplingWO2004005787A3 *Jul 2, 2003Jul 1, 2004Eaton CorpDual function service coupling* Cited by examinerClassifications U.S. Classification137/614.05, 137/614.03International ClassificationF25B45/00, F25B41/00, F16L37/36, F16L37/34, F25B41/04Cooperative ClassificationF16L37/34, F25B2345/006, Y10T137/87965, F16L37/36, Y10T137/87949European ClassificationF16L37/34, F16L37/36Legal EventsDateCodeEventDescriptionNov 25, 1991ASAssignmentOwner name: AEROQUIP CORPORATION A CORP. OF MICHIGANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:JENSEN, JON A.;KNOWLES, STEVEN M.;LAIPPLY, ROBERT A.;REEL/FRAME:005925/0446Effective date: 19910125Jan 17, 1992ASAssignmentOwner name: AEROQUIP CORPORATIONFree format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BOLAND, JOHN D.;REEL/FRAME:005978/0039Effective date: 19920110Owner name: AEROQUIP CORPORATION, MICHIGANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BOLAND, JOHN D.;REEL/FRAME:005978/0039Effective date: 19920110Dec 7, 1993CCCertificate of correctionApr 26, 1994CCCertificate of correctionFeb 20, 1996FPAYFee paymentYear of fee payment: 4Jan 26, 2000FPAYFee paymentYear of fee payment: 8Jan 8, 2002ASAssignmentOwner name: EATON AC&R, LTD., OHIOFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EATON AC&R, INC.;REEL/FRAME:012475/0895Effective date: 20010727Owner name: EATON AC&R, INC., OHIOFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EATON AEROQUIP, INC.;REEL/FRAME:012483/0457Effective date: 20010727Owner name: EATON AC&R, LTD., OHIOFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EATON AEROQUIP, INC.;REEL/FRAME:012483/0464Effective date: 20010727Owner name: PARKER-HANNIFIN CORPORATION, OHIOFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EATON AC&R, LTD.;REEL/FRAME:012483/0473Effective date: 20010831Jan 30, 2002ASAssignmentOwner name: EATON AC&R, LTD., OHIOFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EATON AEROQUIP, INC.;REEL/FRAME:012598/0174Effective date: 20010727May 28, 2002ASAssignmentOwner name: PARKER HANNIFIN CUSTOMER SUPPORT INC., CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PARKER-HANNIFIN CORPORATION;REEL/FRAME:012916/0806Effective date: 20020508May 19, 2003ASAssignmentOwner name: PARKER HANNIFIN CUSTOMER SUPPORT INC., CALIFORNIAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PARKER-HANNIFIN CORPORATION;REEL/FRAME:014074/0959Effective date: 20030331Mar 4, 2004REMIMaintenance fee reminder mailedAug 18, 2004LAPSLapse for failure to pay maintenance feesOct 12, 2004FPExpired due to failure to pay maintenance feeEffective date: 20040818RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services