Title:
HYDRAULICALLY ASSISTED FASTENERS
Document Type and Number:
WIPO Patent Application WO2005080803
Kind Code:
A8
Abstract:
Hydraulically assisted fastener (10) comprises a body (11) with a central bore (12) to engage a connector element (20) and with an annular recess (14) opening outwards to an end surface (15). Annular thrust member (17) fits into and seals the recess (14). Charging medium (50) is injected under pressure into annular chamber (30) defined by recess (14) and member (17) and moves body (11) relative to member (17) to tension element (20). Medium (50) sets in chamber (30) to maintain the tension in element (20). Element (20) may be a bolt or stud, body (11) can be a nut and member (17) can be a plan washer. Medium (50) can be a curable viscous paste, a suspended solid in a self-setting compound or a particulate solid which behaves as a fluid. Suitable materials include graphite, and lead, copper or steel balls.
Inventors:
BUCKNELL JOHN WENTWORTH (AU)
Application Number:
PCT/AU2005/000254
Publication Date:
March 30, 2006
Filing Date:
February 25, 2005
Export Citation:
Assignee:
BUCKNELL JOHN WENTWORTH (AU)
International Classes:
F16B31/04; F16B11/00; (IPC1-7): F16B31/04; F16B39/00; B25B29/02; F16L23/036
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