Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
1997-12-31
2000-10-03
Eley, Timothy V.
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
B25B 2308, B25B 2310
Patent
active
061257265
ABSTRACT:
A tool 32 is used to assemble a spark plug insert 24 within an oversize threaded passage 26 of an engine block 20. The tool 32 includes a mandrel 48 which is formed with a threaded extension 60, and also includes a pliable bushing 34 having a cylindrical section 36, a flange 38 at one end thereof and a passage 40. A nut 44 is embedded in the pliable bushing 34 and is formed with threads 46 which are in axial alignment with the passage 40 of the pliable bushing 34. The threaded extension 60 is inserted into the passage 40 of the pliable bushing 34 and into threaded engagement with the nut 44. The cylindrical section 36 is inserted into an inner opening of the insert 24 and the mandrel 48 is rotated relative to the pliable bushing 34 to draw the nut 44 toward the flanged end of the bushing. This action causes the cylindrical section 36 to be compressed axially and to expand outward radially whereby the expanded portions of the section are worked into the spaces between threads 30 to attach the pliable bushing 34 to the insert 24. The mandrel 48 is then manipulated to install the attached insert 24 into the passage 26 of the engine body 20.
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Goslicki Jason M.
Lutkus William J.
Vendetti Mark J.
Eley Timothy V.
Emhart Inc.
Murphy Edward D.
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