Screw type pump
A screw pump having a pair of screw rotors (8) meshed with each other and rotatably supported in a housing (6) having an intake port provided at one end and a piston (31) movably provided at the other axial end of the housing, which piston (31) defines a discharge port (5) in cooperation with the ho...
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creator | YOSHIKAWA, MAMORU SATOH, TAKETOSHI |
description | A screw pump having a pair of screw rotors (8) meshed with each other and rotatably supported in a housing (6) having an intake port provided at one end and a piston (31) movably provided at the other axial end of the housing, which piston (31) defines a discharge port (5) in cooperation with the housing. The movement of the piston in a direction substantially perpendicular to the axes of the screw rotors enables the distance between a discharge starting position (PE,PE') of the discharge port and the intake port to be varied, so that the internal compression ratio can be varied. This arrangement ensures that the size of the housing will not be increased and any disadvantage due to the difference in thermal expansion along the length of the housing can be overcome. |
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fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP0484885A2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP0484885A2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP0484885A23</originalsourceid><addsrcrecordid>eNrjZOAPTi5KLVcoqSxIVSgozS3gYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxrgEGJhYmFhamjkbGRCgBAEAxHnI</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Screw type pump</title><source>esp@cenet</source><creator>YOSHIKAWA, MAMORU ; SATOH, TAKETOSHI</creator><creatorcontrib>YOSHIKAWA, MAMORU ; SATOH, TAKETOSHI</creatorcontrib><description>A screw pump having a pair of screw rotors (8) meshed with each other and rotatably supported in a housing (6) having an intake port provided at one end and a piston (31) movably provided at the other axial end of the housing, which piston (31) defines a discharge port (5) in cooperation with the housing. The movement of the piston in a direction substantially perpendicular to the axes of the screw rotors enables the distance between a discharge starting position (PE,PE') of the discharge port and the intake port to be varied, so that the internal compression ratio can be varied. This arrangement ensures that the size of the housing will not be increased and any disadvantage due to the difference in thermal expansion along the length of the housing can be overcome.</description><language>eng ; fre ; ger</language><subject>BLASTING ; HEATING ; LIGHTING ; MECHANICAL ENGINEERING ; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS ; PUMPS ; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS ; WEAPONS</subject><creationdate>1992</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19920513&DB=EPODOC&CC=EP&NR=0484885A2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19920513&DB=EPODOC&CC=EP&NR=0484885A2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YOSHIKAWA, MAMORU</creatorcontrib><creatorcontrib>SATOH, TAKETOSHI</creatorcontrib><title>Screw type pump</title><description>A screw pump having a pair of screw rotors (8) meshed with each other and rotatably supported in a housing (6) having an intake port provided at one end and a piston (31) movably provided at the other axial end of the housing, which piston (31) defines a discharge port (5) in cooperation with the housing. The movement of the piston in a direction substantially perpendicular to the axes of the screw rotors enables the distance between a discharge starting position (PE,PE') of the discharge port and the intake port to be varied, so that the internal compression ratio can be varied. This arrangement ensures that the size of the housing will not be increased and any disadvantage due to the difference in thermal expansion along the length of the housing can be overcome.</description><subject>BLASTING</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</subject><subject>PUMPS</subject><subject>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</subject><subject>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS</subject><subject>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1992</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOAPTi5KLVcoqSxIVSgozS3gYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxrgEGJhYmFhamjkbGRCgBAEAxHnI</recordid><startdate>19920513</startdate><enddate>19920513</enddate><creator>YOSHIKAWA, MAMORU</creator><creator>SATOH, TAKETOSHI</creator><scope>EVB</scope></search><sort><creationdate>19920513</creationdate><title>Screw type pump</title><author>YOSHIKAWA, MAMORU ; SATOH, TAKETOSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP0484885A23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>1992</creationdate><topic>BLASTING</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS</topic><topic>PUMPS</topic><topic>PUMPS FOR LIQUIDS OR ELASTIC FLUIDS</topic><topic>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS</topic><topic>ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>YOSHIKAWA, MAMORU</creatorcontrib><creatorcontrib>SATOH, TAKETOSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>YOSHIKAWA, MAMORU</au><au>SATOH, TAKETOSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Screw type pump</title><date>1992-05-13</date><risdate>1992</risdate><abstract>A screw pump having a pair of screw rotors (8) meshed with each other and rotatably supported in a housing (6) having an intake port provided at one end and a piston (31) movably provided at the other axial end of the housing, which piston (31) defines a discharge port (5) in cooperation with the housing. The movement of the piston in a direction substantially perpendicular to the axes of the screw rotors enables the distance between a discharge starting position (PE,PE') of the discharge port and the intake port to be varied, so that the internal compression ratio can be varied. This arrangement ensures that the size of the housing will not be increased and any disadvantage due to the difference in thermal expansion along the length of the housing can be overcome.</abstract><oa>free_for_read</oa></addata></record> |
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language | eng ; fre ; ger |
recordid | cdi_epo_espacenet_EP0484885A2 |
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subjects | BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS WEAPONS |
title | Screw type pump |
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