A method and apparatus for launching and retracting the heads in a disk drive
PROBLEM TO BE SOLVED: To minimize clash between a read/write head and a recordign medium, and thereby to improve the reliability of a disk drive by employing one mechanism for launching/retraction of the read/write head. SOLUTION: The mechanism includes a retract lever 81, a retract lever lock 118,...
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| creator | JACK DUANE THORSEN YIN YEOW CHOO KIAN KOK LIM KAI CHIH-KAI SUN DUNCAN LEE POLLOCK YEE CHEOK LOW |
| description | PROBLEM TO BE SOLVED: To minimize clash between a read/write head and a recordign medium, and thereby to improve the reliability of a disk drive by employing one mechanism for launching/retraction of the read/write head. SOLUTION: The mechanism includes a retract lever 81, a retract lever lock 118, a mechanical biasing member (spring 76 or the like), and a voice coil motor 16. After launching, the voice coil motor 16 is used to rotate the retract lever 91 to increase the potential energy of the biasing member. Then the retract lever lock 118 is used to store the built-up potential energy. On the occurrence of a power failure of the disk drive, the mechanism retracts the read/write heads 55, 58 automatically from the medium. The stored mechanical energy during the retract motion of the read/write heads 55, 58 acts on the retract lever 91 to allow the read/write heads 55, 58 automatically to be retracted from the medium. |
| format | Patent |
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SOLUTION: The mechanism includes a retract lever 81, a retract lever lock 118, a mechanical biasing member (spring 76 or the like), and a voice coil motor 16. After launching, the voice coil motor 16 is used to rotate the retract lever 91 to increase the potential energy of the biasing member. Then the retract lever lock 118 is used to store the built-up potential energy. On the occurrence of a power failure of the disk drive, the mechanism retracts the read/write heads 55, 58 automatically from the medium. 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The stored mechanical energy during the retract motion of the read/write heads 55, 58 acts on the retract lever 91 to allow the read/write heads 55, 58 automatically to be retracted from the medium.</description><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1996</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqFijsOwjAQBd1QIOAM7AUiWaaiDAhCQ0cfrewNthJsa3fD-fmInuJpNJq3NNcWHqSxBMD8Xq3IqLPAUBgmnLOPKd-_jUkZvX5UI0EkDAIpA0JIMkLg9KS1WQw4CW1-XJnt-XQ7XhqqpSep6CmT9t3Bub2z1ra7_48XltU0TQ</recordid><startdate>19960207</startdate><enddate>19960207</enddate><creator>JACK DUANE THORSEN</creator><creator>YIN YEOW CHOO</creator><creator>KIAN KOK LIM</creator><creator>KAI CHIH-KAI SUN</creator><creator>DUNCAN LEE POLLOCK</creator><creator>YEE CHEOK LOW</creator><scope>EVB</scope></search><sort><creationdate>19960207</creationdate><title>A method and apparatus for launching and retracting the heads in a disk drive</title><author>JACK DUANE THORSEN ; YIN YEOW CHOO ; KIAN KOK LIM ; KAI CHIH-KAI SUN ; DUNCAN LEE POLLOCK ; YEE CHEOK LOW</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_GB2292000A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1996</creationdate><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>JACK DUANE THORSEN</creatorcontrib><creatorcontrib>YIN YEOW CHOO</creatorcontrib><creatorcontrib>KIAN KOK LIM</creatorcontrib><creatorcontrib>KAI CHIH-KAI SUN</creatorcontrib><creatorcontrib>DUNCAN LEE POLLOCK</creatorcontrib><creatorcontrib>YEE CHEOK LOW</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>JACK DUANE THORSEN</au><au>YIN YEOW CHOO</au><au>KIAN KOK LIM</au><au>KAI CHIH-KAI SUN</au><au>DUNCAN LEE POLLOCK</au><au>YEE CHEOK LOW</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>A method and apparatus for launching and retracting the heads in a disk drive</title><date>1996-02-07</date><risdate>1996</risdate><abstract>PROBLEM TO BE SOLVED: To minimize clash between a read/write head and a recordign medium, and thereby to improve the reliability of a disk drive by employing one mechanism for launching/retraction of the read/write head. SOLUTION: The mechanism includes a retract lever 81, a retract lever lock 118, a mechanical biasing member (spring 76 or the like), and a voice coil motor 16. After launching, the voice coil motor 16 is used to rotate the retract lever 91 to increase the potential energy of the biasing member. Then the retract lever lock 118 is used to store the built-up potential energy. On the occurrence of a power failure of the disk drive, the mechanism retracts the read/write heads 55, 58 automatically from the medium. The stored mechanical energy during the retract motion of the read/write heads 55, 58 acts on the retract lever 91 to allow the read/write heads 55, 58 automatically to be retracted from the medium.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS |
| title | A method and apparatus for launching and retracting the heads in a disk drive |
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