Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Reexamination Certificate
2000-05-09
2001-10-09
Meislin, D. S. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
C081S439000, C081S177400, C007S118000, C007S165000, C007S168000
Reexamination Certificate
active
06298756
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention pertains to improved multipurpose hand tools, and more particularly to a Leatherman's type hand tool or Swiss army knife, but with improved features, such as an interchangeable 4 in 1 or screw nut driver even an 8 in 1 driver tool, as well as other novel improved wrench and plier hand tools.
Incorporation of multiple tool functions or abilities into a single tool device is a well known convenience as is incorporation of multiple blades and tools which may be designed to “fold” into a handle, such as in a conventional pocket knife configuration. Such blades and tools do not themselves generally fold, but are hinged to the handle and the combination blade and handle are said to fold closed for safe and convenient transport and unfold, or hinge open, for use. In such conventional pocket knife configurations as are known to the applicant, each blade and tool function is represented by a single operative member, such as a knife blade or a screwdriver blade, which are combined in some stacked arrangement to hinge with respect to the handle. On the other hand, multipurpose tools are known which do not fold, such as interchangeable bit screwdrivers, wrenches, pliers, etc.
SUMMARY OF THE INVENTION
The present invention provides a self-contained, improved hand tool having no loose parts, such as folding pocket-type knives with the flexibility and functionality of multipurpose tools. The present invention provides, among other hand tools, a folding combination pocket-type knife with the professional usefulness of interchangeable bit screwdrivers and offset screwdrivers using the same interchangeable bit. In particular, the present invention provides hinged sleeve means which removably retains screwdriver bits in hinged relationship to a handle adapted to receive the sleeve and bit in recessed storage relationship and in exposed functioning relationship. The sleeve means has retaining means which cooperates with the bit to removably secure the bit in the sleeve. The double ended bit is interchangeable with other bits and is reversible, having a different drive at each end.
Also provided is an hexagonal cross-hole, extending from one side bolster to the other of the handle, to receive the interchangeable bits in perpendicular relation to the handle, creating an offset interchangeable bit section of the invention. Retractable and/or biasable ball retaining means, or magnets, or retaining clips on each interchangeable bit may be used to retain the offset bit by fitting between the side bolsters and being retained thereby. Also, with the various hand tools of the invention, the folding blades may suitably have conventional provisions for locking in the open positions any of the tools for safety so as to prevent tools and blades from unexpectedly snapping closed.
Anderson Wayne
Cassutti Paolo
LackenbachSiegel
Meislin D. S.
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