Source: http://www.google.com/patents/US6764593?ie=ISO-8859-1
Timestamp: 2014-08-31 06:54:05
Document Index: 538749852

Matched Legal Cases: ['art 14', 'art 16', 'art 12', 'art 16', 'art 14', 'art 16', 'art 14', 'art 16']

Patent US6764593 - Automobile air conditioning refrigerant filter - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsA refrigerant filter, attachable to automotive air-conditioning systems, for removal of debris from air-conditioning refrigerants. The filter media is contained within a two-part hollow body for flow-through filtration of the refrigerants. The first and second parts of the hollow body are sealingly and...http://www.google.com/patents/US6764593?utm_source=gb-gplus-sharePatent US6764593 - Automobile air conditioning refrigerant filterAdvanced Patent SearchPublication numberUS6764593 B1Publication typeGrantApplication numberUS 10/289,034Publication dateJul 20, 2004Filing dateNov 6, 2002Priority dateNov 6, 2002Fee statusLapsedPublication number10289034, 289034, US 6764593 B1, US 6764593B1, US-B1-6764593, US6764593 B1, US6764593B1InventorsScot M. PaceOriginal AssigneeScot M. PaceExport CitationBiBTeX, EndNote, RefManPatent Citations (10), Referenced by (8), Classifications (20), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetAutomobile air conditioning refrigerant filterUS 6764593 B1Abstract A refrigerant filter, attachable to automotive air-conditioning systems, for removal of debris from air-conditioning refrigerants. The filter media is contained within a two-part hollow body for flow-through filtration of the refrigerants. The first and second parts of the hollow body are sealingly and removably attachable to one another to easily gain access to the filter media, which permits replacement of the filter media without removal of the filter body from the refrigerant line. The apparatus includes a first and second filter media, in which the second filter media prevent transfer of portions of the first filter media into the air-conditioning system.
SUMMARY OF THE INVENTION The present invention relates to a filter for removing debris from auto air conditioning refrigerant, particularly after failure of a compressor which injects debris into the auto air conditioning system. The invention comprises a flow-through filter that has a two-part hollow body. The first and second part of the hollow body are sealingly and removably attachable to one another to easily gain access to the filter media that is housed within the interior space of the hollow. This allows replacement of the filter media without removal of the filter body from the refrigerant line.
DESCRIPTION OF A PREFERRED EMBODIMENT A preferred embodiment for the refrigerant filter of this invention is illustrated in the drawing FIGS. 1-4, in which the apparatus is generally indicated as 10. Referring first to the view of FIG. 1, it can be seen that the refrigerant filter 10 comprises a body 12 that has a first part 14 and a second part 16. As a seen in FIG. 2, in a preferred embodiment, the body 12 is cylindrical; however, the body 12 may be any suitable shape. The first part 12 and second part 16 are sealingly and removably attachable to one another. As seen in FIG. 3 and FIG. 4, the first part 14 is hollow and has an open-end 18 and the second part 16 is also hollow and has an open-end 20. When the two parts are aligned and attached to one another at their open ends 18 and 20 an interior space 22 is defined. The first part 14 has an inlet aperture 24 and the second part 16 has an outlet aperture 26.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS2225990 *Dec 22, 1937Dec 24, 1940Henry Guy JDehydratorUS2525287 *Mar 22, 1947Oct 10, 1950Cuno Eng CorpFilterUS2862623 *May 18, 1955Dec 2, 1958Gen Motors CorpFilterUS3680707 *Jul 30, 1971Aug 1, 1972Virginia Chemicals IncFilter drierUS3909221 *Feb 25, 1974Sep 30, 1975Bengtsson Goran VilhelmFiltering deviceUS4209401 *Apr 20, 1978Jun 24, 1980Emerson Electric Co.Filter drierUS4364756 *Jul 7, 1981Dec 21, 1982Virginia Chemicals Inc.Refrigerant suction line filter/filter-drier and method for the construction thereofUS4637881 *Dec 3, 1984Jan 20, 1987Emerson Electric Co.Filter drierUS4811571 *Mar 28, 1988Mar 14, 1989Thermo King CorporationRefrigerant drierUS4908132 *Jul 26, 1989Mar 13, 1990Parker Hannifin CorporationFluid tight cylindrical body, desiccant core, baffle plate, resilient core support in recess of baffle, refrigerant pervious pad, biasing means* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS7195463 *Sep 26, 2003Mar 27, 2007Wall Thomas MMethod of installing and renewing an inlet port plate filter in the low pressure side of an automotive air conditioning systemUS8133291Jul 1, 2009Mar 13, 2012Hobart Brothers CompanyAir filtration for aircraft ground support equipmentUS8584483 *Mar 23, 2011Nov 19, 2013Kabushiki Kaisha Toyota JidoshokkiSemiconductor deviceUS20110061259 *Jul 22, 2010Mar 17, 2011Pindell Engineering LlcExsiccate deviceUS20110079040 *Jun 12, 2009Apr 7, 2011Mitsubishi Electric CorporationRefrigerating cycle device and air conditionerUS20110232316 *Mar 23, 2011Sep 29, 2011Kabushiki Kaisha Toyota JidoshokkiCooling deviceEP1795753A1 *Mar 8, 2005Jun 13, 2007Valeo Thermal Systems Japan CorporationCompressor with foreign matter removerWO2010003051A1 *Jul 2, 2009Jan 7, 2010Illinois Tool Works Inc.Air filtration for aircraft ground support equipment* Cited by examinerClassifications U.S. Classification210/92, 210/435, 210/450, 210/451, 55/487, 55/525International ClassificationF25B43/00, B01D46/10, B01D46/00Cooperative ClassificationB01D46/10, F25B43/003, B01D2267/40, B01D46/0023, B01D46/0005, B01D46/0043European ClassificationB01D46/00G2C, B01D46/10, B01D46/00C20, B01D46/00D4, F25B43/00BLegal EventsDateCodeEventDescriptionSep 9, 2008FPExpired due to failure to pay maintenance feeEffective date: 20080720Jul 20, 2008LAPSLapse for failure to pay maintenance feesJan 28, 2008REMIMaintenance fee reminder mailedRotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google