Universal wrench

Tools – Wrench – screwdriver – or driver therefor – Pivoted outer jaw

Reexamination Certificate

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Details

C081S109000, C081S094000

Reexamination Certificate

active

06305251

ABSTRACT:

FIELD OF THE INVENTION
The invention relates to a universal wrench.
BACKGROUND OF THE INVENTION
Known univeral wrenches have the drawback that the wrench body is held only conditionally on the parts that are to be gripped. Moreover, it is possible to secure the wrench body in the selected position in the support slot and to make an intended change of the gripping opening and the gripping angle only to a limited extent.
SUMMARY OF THE INVENTION
An object of the invention is to improve universal wrench as of the above-mentioned type in such a way that the wrench body is held against the part that is being gripped and in a selected position in the support slot so that a change of the gripping opening and the gripping angle is possible to an unlimited extent.
The design of the handle and the wrench body according to the invention and the arrangement of spring means make it possible to hold the wrench body against the part that is being gripped and in a selected position in the support slot as well as to change the gripping opening and the gripping angle.
The handle is suitably provided with a coating made of suitable material for better handling.
The universal wrench that is thus designed can be used according to the type of ratchet tool employed since the wrench body is held tightly against the part that is being gripped by an arrangement of spring means. It is advantageous if the swivel axis of the wrench body has varying diameters that correspond to respective recesses in the support slot of the wrench body and can be moved against the pressure of a spring in such a way that engaging and disengaging of the swivel axis can take place in the selected recess in the support slot of the wrench body so as to be able to make a change in the gripping opening and the gripping angle.


REFERENCES:
patent: 1037387 (1912-09-01), Wilkinson
patent: 1093388 (1914-04-01), Flack
patent: 1368966 (1921-02-01), Ooley
patent: 1500313 (1924-07-01), Hacheney
patent: 1566764 (1925-12-01), Murphy
patent: 2050102 (1936-08-01), Kujala et al.
patent: 4296655 (1981-10-01), Tesoro
patent: 4651597 (1987-03-01), Yang
patent: 4893528 (1990-01-01), Chung-Hsing
patent: 6026714 (2000-02-01), Chang
patent: 278376 (1913-10-01), None
patent: 2595607 A (1987-09-01), None
patent: 10288 (1994-05-01), None

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