Multiple chamber hydraulic multi-jack bolt tensioners

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11285573
APP PUB NO 20210008676A1
SERIAL NO

16956501

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A multi jack tensioner for applying tension to a fastener, the tensioner comprising:

    a body having at least one section, including a first body section formed to engage an elongate fastening member or integrally formed therewith;a load bearing member for applying force to a workpiece to be fastened and arranged for location about said fastening member adjacent the body;a plurality of pressure chambers between the load bearing member and the body arranged to displace the at least one body section axially relative to the load bearing member in response to hydraulic pressure; anda plurality of jack bolts extending between the body section and the load bearing member for further displacing the first body section from the load bearing member;wherein application of hydraulic pressure to one or more of the plurality of pressure chambers displaces the first body section from the load bearing member thereby tensioning said fastening member and whereby subsequent tensioning of the fastening member is applied by operation of the jack bolts.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
SUPERBOLT INC1000 GREGG STREET CARNEGIE PA 15106

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Greenwell, Steven Mooretown, CA 4 33
McPhee, Andrew Duncan Chapel Hill, AU 6 10

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