Device to control speed and torque of line return in spring drive device
A governing device including a return spring and a spool upon which a line or cord is wound, includes on a fixed housing element a magnetic or a conductive material and on the rotating portion of the spool respectively either a magnet or a layer of conductive material is provided. When the line or c...
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| creator | NEVILLE BRIAN E GIRTMAN MICHAEL L |
| description | A governing device including a return spring and a spool upon which a line or cord is wound, includes on a fixed housing element a magnetic or a conductive material and on the rotating portion of the spool respectively either a magnet or a layer of conductive material is provided. When the line or cord is retracted by the spring, a hysteresis loop is formed in the conductive material by the magnet causing an eddy current which slows down the rate of retraction of the line to provide safety in the rate of return of the line or cord. |
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When the line or cord is retracted by the spring, a hysteresis loop is formed in the conductive material by the magnet causing an eddy current which slows down the rate of retraction of the line to provide safety in the rate of return of the line or cord.</description><edition>7</edition><language>eng</language><subject>CONVEYING ; DECORATIVE ARTS ; HANDLING THIN OR FILAMENTARY MATERIAL ; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES ; PACKING ; PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDEDFOR ; PERFORMING OPERATIONS ; PRESERVING PAINTINGS ; STORING ; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTSOR FINISHES ; TRANSPORTING</subject><creationdate>2003</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=20030828&DB=EPODOC&CC=US&NR=2003160122A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20030828&DB=EPODOC&CC=US&NR=2003160122A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NEVILLE BRIAN E</creatorcontrib><creatorcontrib>GIRTMAN MICHAEL L</creatorcontrib><title>Device to control speed and torque of line return in spring drive device</title><description>A governing device including a return spring and a spool upon which a line or cord is wound, includes on a fixed housing element a magnetic or a conductive material and on the rotating portion of the spool respectively either a magnet or a layer of conductive material is provided. 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When the line or cord is retracted by the spring, a hysteresis loop is formed in the conductive material by the magnet causing an eddy current which slows down the rate of retraction of the line to provide safety in the rate of return of the line or cord.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | CONVEYING DECORATIVE ARTS HANDLING THIN OR FILAMENTARY MATERIAL HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES PACKING PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDEDFOR PERFORMING OPERATIONS PRESERVING PAINTINGS STORING SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTSOR FINISHES TRANSPORTING |
| title | Device to control speed and torque of line return in spring drive device |
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