Ronald A Weiss

US Patent:

52729443, Dec 28, 1993

Filed:

Dec 14, 1992

Appl. No.:

7/990386

Inventors:

Ronald G. Weiss - Taylor MI
Jonathon P. Schmidt - Dearborn MI

Assignee:

Ford Motor Company - Darborn MI

International Classification:

B25B 2300

US Classification:

81462

Abstract:

A wrench tool for preventing cross threading during engagement of nuts with studs is provided. A driving body receives the nut and alignment with the stud is effected through a locating assembly pivotally connected to the driving body. The locating assembly is moved out of engagement with the stud by the movement of the driving body in the tightening direction.

US Patent:

49814060, Jan 1, 1991

Filed:

Dec 5, 1988

Appl. No.:

7/279731

Inventors:

Ronald G. Weiss - Taylor MI
James A. Levitte - Plymouth MI
Jonathon P. Schmidt - Troy MI
Allan J. Theisen - Grosse Ile MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

F16B 2500

US Classification:

411386

Abstract:

A screw or bolt has a conventional threaded shank and a tapered pilot or lead end for easy entry to a threaded receptacle or nut. A pilot lead extends axially from the end of the shank. In one form, the pilot is cylindrical having an axis that either intersects or is parallel to the axis of the shank. Partial threads extend around the portion of the periphery of the pilot and an unthreaded transition surface angularly spaced from, transversely opposite, the partial threads extends to the outer surface of the shank. In another form, the pilot is elliptical having partial threads extending over a portion of its periphery and an unthreaded surface transversely opposite the pilot threads.