Wrench

Details Wrench Wrench

2005-05-10

2005-05-10

Hail, III, Joseph J. (Department: 3723)

Tools

Including tool driving by impact delivering component or...

Structurally constrained to arcuate movement

C463S023000, C073S001080

Reexamination Certificate

active

06889584

ABSTRACT:
A wrench includes a main shaft having a working portion provided at the top thereof; a torsion member having an elastic restoring force against torsion about the axis of the main shaft; at least one operating handle disposed so as to intersect with the middle of the main shaft; and torque display means for displaying a torque produced in accordance with the degree of twist of the torsion member with respect to the reference point of the same. The main shaft is dividable into two divided bodies in the axial direction thereof, and the two divided bodies are connected to each other. The torsion member is interposed between the divided bodies, which are turnable relative to each other about the axis of the main shaft. With this wrench, a screw can be quickly sent to its seating position and is then fastened with up to a predetermined torque.

REFERENCES:
patent: 4901610 (1990-02-01), Larson et al.
patent: D409060 (1999-05-01), Lucy
patent: 52-35596 (1977-03-01), None

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