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Tool For Driving Many Fasteners SimultaneouslyProposed tool tightens or loosens several bolts, screws, nuts, or other threaded fasteners arranged in circle on compressor head, automotive wheel, pipe-end flange, or similar object. Enables assembly or disassembly in fraction of time needed to tighten fasteners one at a time. Simultaneously applies same torque to all fasteners, preventing distortion and enhancing reliability. Concept not limited to circular fastener patterns. Adapted to rectangular configurations like on engine intake manifolds, by adding gears to drive train to provide proper spacing. Designed to deliver fixed or adjustable maximum torque. To ensure even seal loading, piston pressure simultaneously ramped from initial to final values to maintain relatively constant torque loading on all fasteners until final specifications limit achieved.
Document ID
19950065465
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Cook, Joseph S., Jr.
(NASA Lyndon B. Johnson Space Center, Houston, TX.)
Date Acquired
August 17, 2013
Publication Date
July 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 7
ISSN: 0145-319X
Subject Category
Machinery
Report/Patent Number
MSC-22386
Accession Number
95B10306
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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