HYDRAULIC VIBRATION-DAMPER WITH VARIABLE DAMPING CHARACTERISTIC
A hydraulic vibration-damper with variable damping characteristic comprises a cylinder (1) with a piston rod (2) and a piston (7; 24) which divides the volume of the cylinder (1) into two working chambers (8, 9). The piston parts which move relative to the cylinder (1) are provided with a passage ar...
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| creator | OBSTFELDER, GUENTHER |
| description | A hydraulic vibration-damper with variable damping characteristic comprises a cylinder (1) with a piston rod (2) and a piston (7; 24) which divides the volume of the cylinder (1) into two working chambers (8, 9). The piston parts which move relative to the cylinder (1) are provided with a passage arranged between the working chambers (8, 9) which can be opened or closed by a shut-off valve (17, 18; 34). The cross-section of the piston (7; 24) is less than the free cross-section of the cylinder (1), so that a gap (13; 26, 26', 32) is formed as a passage between the cylinder wall and the piston (7; 24). The piston has a groove (10'; 29, 29') in the region of the gap (13; 26, 26', 32) which extends across the whole width of the gap (13, 26, 26', 32). Arranged in said groove is an elastic expanded body (11; 31, 31') which is curved like a tyre in the direction of the cylinder wall and which closes the gap (13; 26, 26', 32) and seals the volume (12; 37, 37') of the groove (10; 29, 29') from the passage. Two channels (15, 16; 33, 33'), in each of which is arranged a shut-off valve (17, 18; 34) with a passage (19, 20; 35, 35'), lead from each working chamber (8, 9) and open into the groove (10; 29, 29'). |
| format | Patent |
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The piston parts which move relative to the cylinder (1) are provided with a passage arranged between the working chambers (8, 9) which can be opened or closed by a shut-off valve (17, 18; 34). The cross-section of the piston (7; 24) is less than the free cross-section of the cylinder (1), so that a gap (13; 26, 26', 32) is formed as a passage between the cylinder wall and the piston (7; 24). The piston has a groove (10'; 29, 29') in the region of the gap (13; 26, 26', 32) which extends across the whole width of the gap (13, 26, 26', 32). Arranged in said groove is an elastic expanded body (11; 31, 31') which is curved like a tyre in the direction of the cylinder wall and which closes the gap (13; 26, 26', 32) and seals the volume (12; 37, 37') of the groove (10; 29, 29') from the passage. Two channels (15, 16; 33, 33'), in each of which is arranged a shut-off valve (17, 18; 34) with a passage (19, 20; 35, 35'), lead from each working chamber (8, 9) and open into the groove (10; 29, 29').</description><language>eng ; ger</language><subject>BLASTING ; ENGINEERING ELEMENTS AND UNITS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; LIGHTING ; MEANS FOR DAMPING VIBRATION ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; SHOCK-ABSORBERS ; SPRINGS ; THERMAL INSULATION IN GENERAL ; TRANSPORTING ; VEHICLE SUSPENSION ARRANGEMENTS ; VEHICLES IN GENERAL ; WEAPONS</subject><creationdate>1993</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=19930804&DB=EPODOC&CC=EP&NR=0419522B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19930804&DB=EPODOC&CC=EP&NR=0419522B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>OBSTFELDER, GUENTHER</creatorcontrib><title>HYDRAULIC VIBRATION-DAMPER WITH VARIABLE DAMPING CHARACTERISTIC</title><description>A hydraulic vibration-damper with variable damping characteristic comprises a cylinder (1) with a piston rod (2) and a piston (7; 24) which divides the volume of the cylinder (1) into two working chambers (8, 9). The piston parts which move relative to the cylinder (1) are provided with a passage arranged between the working chambers (8, 9) which can be opened or closed by a shut-off valve (17, 18; 34). The cross-section of the piston (7; 24) is less than the free cross-section of the cylinder (1), so that a gap (13; 26, 26', 32) is formed as a passage between the cylinder wall and the piston (7; 24). The piston has a groove (10'; 29, 29') in the region of the gap (13; 26, 26', 32) which extends across the whole width of the gap (13, 26, 26', 32). Arranged in said groove is an elastic expanded body (11; 31, 31') which is curved like a tyre in the direction of the cylinder wall and which closes the gap (13; 26, 26', 32) and seals the volume (12; 37, 37') of the groove (10; 29, 29') from the passage. Two channels (15, 16; 33, 33'), in each of which is arranged a shut-off valve (17, 18; 34) with a passage (19, 20; 35, 35'), lead from each working chamber (8, 9) and open into the groove (10; 29, 29').</description><subject>BLASTING</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MEANS FOR DAMPING VIBRATION</subject><subject>MECHANICAL ENGINEERING</subject><subject>PERFORMING OPERATIONS</subject><subject>SHOCK-ABSORBERS</subject><subject>SPRINGS</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>TRANSPORTING</subject><subject>VEHICLE SUSPENSION ARRANGEMENTS</subject><subject>VEHICLES IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1993</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLD3iHQJcgz18XRWCPN0CnIM8fT303Vx9A1wDVII9wzxUAhzDPJ0dPJxVQAJevq5Kzh7OAY5Ooe4BnkGh3g68zCwpiXmFKfyQmluBgU31xBnD93Ugvz41OKCxOTUvNSSeNcAAxNDS1MjIydDYyKUAABFwSoi</recordid><startdate>19930804</startdate><enddate>19930804</enddate><creator>OBSTFELDER, GUENTHER</creator><scope>EVB</scope></search><sort><creationdate>19930804</creationdate><title>HYDRAULIC VIBRATION-DAMPER WITH VARIABLE DAMPING CHARACTERISTIC</title><author>OBSTFELDER, GUENTHER</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP0419522B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; ger</language><creationdate>1993</creationdate><topic>BLASTING</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MEANS FOR DAMPING VIBRATION</topic><topic>MECHANICAL ENGINEERING</topic><topic>PERFORMING OPERATIONS</topic><topic>SHOCK-ABSORBERS</topic><topic>SPRINGS</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>TRANSPORTING</topic><topic>VEHICLE SUSPENSION ARRANGEMENTS</topic><topic>VEHICLES IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>OBSTFELDER, GUENTHER</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>OBSTFELDER, GUENTHER</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>HYDRAULIC VIBRATION-DAMPER WITH VARIABLE DAMPING CHARACTERISTIC</title><date>1993-08-04</date><risdate>1993</risdate><abstract>A hydraulic vibration-damper with variable damping characteristic comprises a cylinder (1) with a piston rod (2) and a piston (7; 24) which divides the volume of the cylinder (1) into two working chambers (8, 9). The piston parts which move relative to the cylinder (1) are provided with a passage arranged between the working chambers (8, 9) which can be opened or closed by a shut-off valve (17, 18; 34). The cross-section of the piston (7; 24) is less than the free cross-section of the cylinder (1), so that a gap (13; 26, 26', 32) is formed as a passage between the cylinder wall and the piston (7; 24). The piston has a groove (10'; 29, 29') in the region of the gap (13; 26, 26', 32) which extends across the whole width of the gap (13, 26, 26', 32). Arranged in said groove is an elastic expanded body (11; 31, 31') which is curved like a tyre in the direction of the cylinder wall and which closes the gap (13; 26, 26', 32) and seals the volume (12; 37, 37') of the groove (10; 29, 29') from the passage. Two channels (15, 16; 33, 33'), in each of which is arranged a shut-off valve (17, 18; 34) with a passage (19, 20; 35, 35'), lead from each working chamber (8, 9) and open into the groove (10; 29, 29').</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; ger |
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| subjects | BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING PERFORMING OPERATIONS SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLE SUSPENSION ARRANGEMENTS VEHICLES IN GENERAL WEAPONS |
| title | HYDRAULIC VIBRATION-DAMPER WITH VARIABLE DAMPING CHARACTERISTIC |
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