Tools – Wrench – screwdriver – or driver therefor – Handle or shank
Patent
1998-04-13
1999-11-16
Scherbel, David A.
Tools
Wrench, screwdriver, or driver therefor
Handle or shank
811251, B25B 2316
Patent
active
059837594
ABSTRACT:
A folding wrench cluster may include at least four wrenches of different sizes and/or configurations, each selectively extendible from a single body portion. The body portion comprises a flat plate with a wrench secured to a pivot point extending from each side at each end of the body. The pivot points are laterally offset from the longitudinal centerline of the body. A laterally offset stop pin also extends from each side at each end of the body, with the stop pins being opposite the wrench pivot points. The stop pins are positioned to limit the arcuate motion of the wrenches when they are unfolded, so each wrench is closely aligned with the elongate body plate when it is fully extended, with the body plate serving as an extension handle. Spacers are provided between adjacent body plates or retaining members, to allow for a relatively thick wrench head for greater durability for the tool. The eye formed in the wrench handle for attachment to the pivot pin is also relatively heavy in order to absorb the shear stresses when torque is applied to the wrench and extended handle. Additional embodiments may include a plurality of plates each sandwiching two wrenches therebetween for further versatility, and a body plate having two wrench pivot points extending from each side at each end, with a stop pin disposed between each of the wrench pivot points on each side at each end, to effectively double the number of wrenches in a wrench cluster.
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patent: 4606247 (1986-08-01), Graham
patent: 5557992 (1996-09-01), Macor
Danganan Joni B.
Litman Richard C.
Scherbel David A.
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