Compact structure of gear pump designed to minimize loss of pumping torque
A gear pump apparatus is equipped with a pump and a sealing mechanism which is made up of an outer member, an inner member, and a rubber member fit between the outer and inner members. The inner member has a pressure-exerted surface to which pressure, as produced by contact of the rubber member with...
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| creator | Uchiyama Kazunori Hashiba Takashi Ando Kunihito Hakamada Naoki Naganuma Takahiro Kawabata Tomoaki |
| description | A gear pump apparatus is equipped with a pump and a sealing mechanism which is made up of an outer member, an inner member, and a rubber member fit between the outer and inner members. The inner member has a pressure-exerted surface to which pressure, as produced by contact of the rubber member with the inner member arising from application of discharge pressure of the pump, is applied. The pressure-exerted surface has a flange which creates thrust to move the inner member away from the gear pump, thereby bringing the inner member against an inner wall of a pump casing to develop a hermetical seal between a high-pressure region and a low-pressure region within the pump casing. This eliminates the leakage of pressure and ensures torque required for a pumping operation of the pump. |
| format | Patent |
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The inner member has a pressure-exerted surface to which pressure, as produced by contact of the rubber member with the inner member arising from application of discharge pressure of the pump, is applied. The pressure-exerted surface has a flange which creates thrust to move the inner member away from the gear pump, thereby bringing the inner member against an inner wall of a pump casing to develop a hermetical seal between a high-pressure region and a low-pressure region within the pump casing. 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This eliminates the leakage of pressure and ensures torque required for a pumping operation of the pump.</description><subject>BLASTING</subject><subject>ENGINE PLANTS IN GENERAL</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MACHINES OR ENGINES IN GENERAL</subject><subject>MECHANICAL ENGINEERING</subject><subject>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</subject><subject>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</subject><subject>ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES</subject><subject>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS</subject><subject>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS</subject><subject>STEAM ENGINES</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZPByzs8tSEwuUSguKSpNLiktSlXIT1NIT00sUigozS1QSEktzkzPS01RKMlXyM3My8zNrEpVyMkvLgYpA6nIzEsHyhUVlqbyMLCmJeYUp_JCaW4GBTfXEGcP3dSC_PjUYqAtqXmpJfGhwZampmYWZpZORsZEKAEA1mE1Lw</recordid><startdate>20170131</startdate><enddate>20170131</enddate><creator>Uchiyama Kazunori</creator><creator>Hashiba Takashi</creator><creator>Ando Kunihito</creator><creator>Hakamada Naoki</creator><creator>Naganuma Takahiro</creator><creator>Kawabata Tomoaki</creator><scope>EVB</scope></search><sort><creationdate>20170131</creationdate><title>Compact structure of gear pump designed to minimize loss of pumping torque</title><author>Uchiyama Kazunori ; Hashiba Takashi ; Ando Kunihito ; Hakamada Naoki ; Naganuma Takahiro ; Kawabata Tomoaki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US9556869B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2017</creationdate><topic>BLASTING</topic><topic>ENGINE PLANTS IN GENERAL</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MACHINES OR ENGINES IN GENERAL</topic><topic>MECHANICAL ENGINEERING</topic><topic>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</topic><topic>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</topic><topic>ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES</topic><topic>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS</topic><topic>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS</topic><topic>STEAM ENGINES</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>Uchiyama Kazunori</creatorcontrib><creatorcontrib>Hashiba Takashi</creatorcontrib><creatorcontrib>Ando Kunihito</creatorcontrib><creatorcontrib>Hakamada Naoki</creatorcontrib><creatorcontrib>Naganuma Takahiro</creatorcontrib><creatorcontrib>Kawabata Tomoaki</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Uchiyama Kazunori</au><au>Hashiba Takashi</au><au>Ando Kunihito</au><au>Hakamada Naoki</au><au>Naganuma Takahiro</au><au>Kawabata Tomoaki</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Compact structure of gear pump designed to minimize loss of pumping torque</title><date>2017-01-31</date><risdate>2017</risdate><abstract>A gear pump apparatus is equipped with a pump and a sealing mechanism which is made up of an outer member, an inner member, and a rubber member fit between the outer and inner members. The inner member has a pressure-exerted surface to which pressure, as produced by contact of the rubber member with the inner member arising from application of discharge pressure of the pump, is applied. The pressure-exerted surface has a flange which creates thrust to move the inner member away from the gear pump, thereby bringing the inner member against an inner wall of a pump casing to develop a hermetical seal between a high-pressure region and a low-pressure region within the pump casing. This eliminates the leakage of pressure and ensures torque required for a pumping operation of the pump.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS STEAM ENGINES WEAPONS |
| title | Compact structure of gear pump designed to minimize loss of pumping torque |
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