Clamping nut and tool holder with the clamping nut, and spanner

Details Clamping nut and tool holder with the clamping nut, and spanner Clamping nut and tool holder with the clamping nut, and spanner

2005-07-12

2005-07-12

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

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C408S057000, C279S020000

Reexamination Certificate

active

06915722

ABSTRACT:
This invention provides a clamping nut which prevents, at the time of rotation of the clamping nut, a fastening force that is imparted in the radial direction of the clamping nut towards the inside of the clamping nut, from operating on a converting part formed on the inner surface of the clamping nut, thereby enhancing rotation efficiency and making it possible to securely clamp a clamp object member. This invention also provides a tool holder with the above-described clamping nut, and a spanner for the fastening of the clamping nut. The clamping nut has an annular groove which takes the form of an annular shape over its outer surface in at least a section of the area on its outer surface that corresponds to a female screw, and which will not come in contact with the spanner. Alternatively, the spanner has a holding part for holding the outer surface of the clamping nut, and this holding part includes a non-contact area which takes the form of an annular shape along the holding part and which will not come in contact with at least a section of the area that corresponds to the female screw of the clamping nut.

REFERENCES:
patent: 3750498 (1973-08-01), Willen
patent: 3829109 (1974-08-01), Koch
patent: 4902177 (1990-02-01), Burnett
patent: 5368421 (1994-11-01), Head
patent: 5596913 (1997-01-01), Matsubara et al.
patent: 5775857 (1998-07-01), Johne
patent: 5984595 (1999-11-01), Mizoguchi
patent: 0 637 484 (1995-02-01), None
patent: 2 186 821 (1987-08-01), None
patent: 5-26208 (1993-04-01), None
patent: 7-68473 (1995-07-01), None

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