Single failure proof crane
A synergistic safety system is incorporated in a crane driven by a high-speed motor which requires both an energy-absorbing torque-limiting device in the speed reduction unit and a drum emergency holding device. The energy-absorbing torque-limiting device transmits the static and dynamic torque requ...
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| creator | CLARKE, CHARLES W |
| description | A synergistic safety system is incorporated in a crane driven by a high-speed motor which requires both an energy-absorbing torque-limiting device in the speed reduction unit and a drum emergency holding device. The energy-absorbing torque-limiting device transmits the static and dynamic torque required to rotate or hold the drum against the maximum carried load, but will slip at a pre-determined setting to absorb high-speed rotational energy of the drive train and/or torque of the drive motor in the event a two-blocking, load hang-up, overload, or engagement of the drum emergency holding device occurs. The drum emergency holding device is set automatically when the energy-absorbing torque-limiting device is actuated and/or any drive train component fails, which are detected by one or more sensing sub-systems. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US4175727A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US4175727A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US4175727A3</originalsourceid><addsrcrecordid>eNrjZJAKzsxLz0lVSEvMzCktSlUoKMrPT1NILkrMS-VhYE1LzClO5YXS3Azybq4hzh66qQX58anFBYnJqXmpJfGhwSaG5qbmRuaOxoRVAAC8YyJG</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Single failure proof crane</title><source>esp@cenet</source><creator>CLARKE, CHARLES W</creator><creatorcontrib>CLARKE, CHARLES W</creatorcontrib><description>A synergistic safety system is incorporated in a crane driven by a high-speed motor which requires both an energy-absorbing torque-limiting device in the speed reduction unit and a drum emergency holding device. The energy-absorbing torque-limiting device transmits the static and dynamic torque required to rotate or hold the drum against the maximum carried load, but will slip at a pre-determined setting to absorb high-speed rotational energy of the drive train and/or torque of the drive motor in the event a two-blocking, load hang-up, overload, or engagement of the drum emergency holding device occurs. The drum emergency holding device is set automatically when the energy-absorbing torque-limiting device is actuated and/or any drive train component fails, which are detected by one or more sensing sub-systems.</description><language>eng</language><subject>CAPSTANS ; HAULING ; HOISTING ; HOISTS ; LIFTING ; PERFORMING OPERATIONS ; TACKLES, e.g. PULLEY BLOCKS ; TRANSPORTING ; WINCHES</subject><creationdate>1979</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=19791127&DB=EPODOC&CC=US&NR=4175727A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19791127&DB=EPODOC&CC=US&NR=4175727A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>CLARKE, CHARLES W</creatorcontrib><title>Single failure proof crane</title><description>A synergistic safety system is incorporated in a crane driven by a high-speed motor which requires both an energy-absorbing torque-limiting device in the speed reduction unit and a drum emergency holding device. The energy-absorbing torque-limiting device transmits the static and dynamic torque required to rotate or hold the drum against the maximum carried load, but will slip at a pre-determined setting to absorb high-speed rotational energy of the drive train and/or torque of the drive motor in the event a two-blocking, load hang-up, overload, or engagement of the drum emergency holding device occurs. The drum emergency holding device is set automatically when the energy-absorbing torque-limiting device is actuated and/or any drive train component fails, which are detected by one or more sensing sub-systems.</description><subject>CAPSTANS</subject><subject>HAULING</subject><subject>HOISTING</subject><subject>HOISTS</subject><subject>LIFTING</subject><subject>PERFORMING OPERATIONS</subject><subject>TACKLES, e.g. PULLEY BLOCKS</subject><subject>TRANSPORTING</subject><subject>WINCHES</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1979</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJAKzsxLz0lVSEvMzCktSlUoKMrPT1NILkrMS-VhYE1LzClO5YXS3Azybq4hzh66qQX58anFBYnJqXmpJfGhwSaG5qbmRuaOxoRVAAC8YyJG</recordid><startdate>19791127</startdate><enddate>19791127</enddate><creator>CLARKE, CHARLES W</creator><scope>EVB</scope></search><sort><creationdate>19791127</creationdate><title>Single failure proof crane</title><author>CLARKE, CHARLES W</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US4175727A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1979</creationdate><topic>CAPSTANS</topic><topic>HAULING</topic><topic>HOISTING</topic><topic>HOISTS</topic><topic>LIFTING</topic><topic>PERFORMING OPERATIONS</topic><topic>TACKLES, e.g. PULLEY BLOCKS</topic><topic>TRANSPORTING</topic><topic>WINCHES</topic><toplevel>online_resources</toplevel><creatorcontrib>CLARKE, CHARLES W</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>CLARKE, CHARLES W</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Single failure proof crane</title><date>1979-11-27</date><risdate>1979</risdate><abstract>A synergistic safety system is incorporated in a crane driven by a high-speed motor which requires both an energy-absorbing torque-limiting device in the speed reduction unit and a drum emergency holding device. The energy-absorbing torque-limiting device transmits the static and dynamic torque required to rotate or hold the drum against the maximum carried load, but will slip at a pre-determined setting to absorb high-speed rotational energy of the drive train and/or torque of the drive motor in the event a two-blocking, load hang-up, overload, or engagement of the drum emergency holding device occurs. The drum emergency holding device is set automatically when the energy-absorbing torque-limiting device is actuated and/or any drive train component fails, which are detected by one or more sensing sub-systems.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_epo_espacenet_US4175727A |
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| subjects | CAPSTANS HAULING HOISTING HOISTS LIFTING PERFORMING OPERATIONS TACKLES, e.g. PULLEY BLOCKS TRANSPORTING WINCHES |
| title | Single failure proof crane |
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