Releasable fastener system
A releasable fastener system (10) comprises a loop portion (12) and a hook portion (14). The loop portion (12) includes a support (16) and a loop material (18) disposed on one side thereof. The hook portion (14) generally includes a support (20) and a plurality of closely spaced upstanding hook elem...
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| creator | STANFORD, THOMAS B., JR MOMODA, LESLIE A POWELL, BOB R., JR BARVOSA-CARTER, WILLIAM JOHNSON, NANCY L BROWNE, ALAN L |
| description | A releasable fastener system (10) comprises a loop portion (12) and a hook portion (14). The loop portion (12) includes a support (16) and a loop material (18) disposed on one side thereof. The hook portion (14) generally includes a support (20) and a plurality of closely spaced upstanding hook elements (22) extending from one side thereof, wherein the plurality of hook elements (22) comprises or incorporates a shape memory alloy fiber. When the hook portion (14) and loop portion (12) are pressed together they interlock to form a releasable engagement. The resulting joint created by the engagement is relatively resistant to shear and pull forces and weak in peel strength forces. Introducing a thermal activation signal (24) to the plurality of hook elements (22) causes a change in shape orientation, flexural modulus property, or a combination thereof that effectively reduces the shear and/or pull off forces in the releasable engagement. In this manner, disengagement of the releasable fastener system provides separation of the hook portion from the loop portion under controlled conditions. Also disclosed herein are processes for operating the releasable fastener system. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP1424023A3</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP1424023A3</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP1424023A33</originalsourceid><addsrcrecordid>eNrjZJAKSs1JTSxOTMpJVUhLLC5JzUstUiiuBDJyeRhY0xJzilN5oTQ3g4Kba4izh25qQX58anFBYjJQcUm8a4ChiZGJgZGxo7ExEUoAFesiug</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Releasable fastener system</title><source>esp@cenet</source><creator>STANFORD, THOMAS B., JR ; MOMODA, LESLIE A ; POWELL, BOB R., JR ; BARVOSA-CARTER, WILLIAM ; JOHNSON, NANCY L ; BROWNE, ALAN L</creator><creatorcontrib>STANFORD, THOMAS B., JR ; MOMODA, LESLIE A ; POWELL, BOB R., JR ; BARVOSA-CARTER, WILLIAM ; JOHNSON, NANCY L ; BROWNE, ALAN L</creatorcontrib><description>A releasable fastener system (10) comprises a loop portion (12) and a hook portion (14). The loop portion (12) includes a support (16) and a loop material (18) disposed on one side thereof. The hook portion (14) generally includes a support (20) and a plurality of closely spaced upstanding hook elements (22) extending from one side thereof, wherein the plurality of hook elements (22) comprises or incorporates a shape memory alloy fiber. When the hook portion (14) and loop portion (12) are pressed together they interlock to form a releasable engagement. The resulting joint created by the engagement is relatively resistant to shear and pull forces and weak in peel strength forces. Introducing a thermal activation signal (24) to the plurality of hook elements (22) causes a change in shape orientation, flexural modulus property, or a combination thereof that effectively reduces the shear and/or pull off forces in the releasable engagement. In this manner, disengagement of the releasable fastener system provides separation of the hook portion from the loop portion under controlled conditions. Also disclosed herein are processes for operating the releasable fastener system.</description><edition>7</edition><language>eng ; fre ; ger</language><subject>AEROPLANES ; AIRCRAFT ; AVIATION ; BLASTING ; BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; COSMONAUTICS ; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ; ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR ; ELECTRICITY ; ENGINEERING ELEMENTS AND UNITS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; GENERATION ; HABERDASHERY ; HEATING ; HELICOPTERS ; HUMAN NECESSITIES ; JEWELLERY ; LIGHTING ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; THERMAL INSULATION IN GENERAL ; TRANSPORTING ; WEAPONS</subject><creationdate>2005</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=20050803&DB=EPODOC&CC=EP&NR=1424023A3$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20050803&DB=EPODOC&CC=EP&NR=1424023A3$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>STANFORD, THOMAS B., JR</creatorcontrib><creatorcontrib>MOMODA, LESLIE A</creatorcontrib><creatorcontrib>POWELL, BOB R., JR</creatorcontrib><creatorcontrib>BARVOSA-CARTER, WILLIAM</creatorcontrib><creatorcontrib>JOHNSON, NANCY L</creatorcontrib><creatorcontrib>BROWNE, ALAN L</creatorcontrib><title>Releasable fastener system</title><description>A releasable fastener system (10) comprises a loop portion (12) and a hook portion (14). The loop portion (12) includes a support (16) and a loop material (18) disposed on one side thereof. The hook portion (14) generally includes a support (20) and a plurality of closely spaced upstanding hook elements (22) extending from one side thereof, wherein the plurality of hook elements (22) comprises or incorporates a shape memory alloy fiber. When the hook portion (14) and loop portion (12) are pressed together they interlock to form a releasable engagement. The resulting joint created by the engagement is relatively resistant to shear and pull forces and weak in peel strength forces. Introducing a thermal activation signal (24) to the plurality of hook elements (22) causes a change in shape orientation, flexural modulus property, or a combination thereof that effectively reduces the shear and/or pull off forces in the releasable engagement. In this manner, disengagement of the releasable fastener system provides separation of the hook portion from the loop portion under controlled conditions. Also disclosed herein are processes for operating the releasable fastener system.</description><subject>AEROPLANES</subject><subject>AIRCRAFT</subject><subject>AVIATION</subject><subject>BLASTING</subject><subject>BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>COSMONAUTICS</subject><subject>DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING</subject><subject>ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRICITY</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>GENERATION</subject><subject>HABERDASHERY</subject><subject>HEATING</subject><subject>HELICOPTERS</subject><subject>HUMAN NECESSITIES</subject><subject>JEWELLERY</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>PERFORMING OPERATIONS</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>TRANSPORTING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2005</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJAKSs1JTSxOTMpJVUhLLC5JzUstUiiuBDJyeRhY0xJzilN5oTQ3g4Kba4izh25qQX58anFBYjJQcUm8a4ChiZGJgZGxo7ExEUoAFesiug</recordid><startdate>20050803</startdate><enddate>20050803</enddate><creator>STANFORD, THOMAS B., JR</creator><creator>MOMODA, LESLIE A</creator><creator>POWELL, BOB R., JR</creator><creator>BARVOSA-CARTER, WILLIAM</creator><creator>JOHNSON, NANCY L</creator><creator>BROWNE, ALAN L</creator><scope>EVB</scope></search><sort><creationdate>20050803</creationdate><title>Releasable fastener system</title><author>STANFORD, THOMAS B., JR ; MOMODA, LESLIE A ; POWELL, BOB R., JR ; BARVOSA-CARTER, WILLIAM ; JOHNSON, NANCY L ; BROWNE, ALAN L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP1424023A33</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2005</creationdate><topic>AEROPLANES</topic><topic>AIRCRAFT</topic><topic>AVIATION</topic><topic>BLASTING</topic><topic>BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>COSMONAUTICS</topic><topic>DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING</topic><topic>ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRICITY</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>GENERATION</topic><topic>HABERDASHERY</topic><topic>HEATING</topic><topic>HELICOPTERS</topic><topic>HUMAN NECESSITIES</topic><topic>JEWELLERY</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>PERFORMING OPERATIONS</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>TRANSPORTING</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>STANFORD, THOMAS B., JR</creatorcontrib><creatorcontrib>MOMODA, LESLIE A</creatorcontrib><creatorcontrib>POWELL, BOB R., JR</creatorcontrib><creatorcontrib>BARVOSA-CARTER, WILLIAM</creatorcontrib><creatorcontrib>JOHNSON, NANCY L</creatorcontrib><creatorcontrib>BROWNE, ALAN L</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>STANFORD, THOMAS B., JR</au><au>MOMODA, LESLIE A</au><au>POWELL, BOB R., JR</au><au>BARVOSA-CARTER, WILLIAM</au><au>JOHNSON, NANCY L</au><au>BROWNE, ALAN L</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Releasable fastener system</title><date>2005-08-03</date><risdate>2005</risdate><abstract>A releasable fastener system (10) comprises a loop portion (12) and a hook portion (14). The loop portion (12) includes a support (16) and a loop material (18) disposed on one side thereof. The hook portion (14) generally includes a support (20) and a plurality of closely spaced upstanding hook elements (22) extending from one side thereof, wherein the plurality of hook elements (22) comprises or incorporates a shape memory alloy fiber. When the hook portion (14) and loop portion (12) are pressed together they interlock to form a releasable engagement. The resulting joint created by the engagement is relatively resistant to shear and pull forces and weak in peel strength forces. Introducing a thermal activation signal (24) to the plurality of hook elements (22) causes a change in shape orientation, flexural modulus property, or a combination thereof that effectively reduces the shear and/or pull off forces in the releasable engagement. In this manner, disengagement of the releasable fastener system provides separation of the hook portion from the loop portion under controlled conditions. Also disclosed herein are processes for operating the releasable fastener system.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
| recordid | cdi_epo_espacenet_EP1424023A3 |
| source | esp@cenet |
| subjects | AEROPLANES AIRCRAFT AVIATION BLASTING BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE CONVERSION OR DISTRIBUTION OF ELECTRIC POWER COSMONAUTICS DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR ELECTRICITY ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERATION HABERDASHERY HEATING HELICOPTERS HUMAN NECESSITIES JEWELLERY LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS |
| title | Releasable fastener system |
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