Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1987-06-29
1988-05-31
Schmidt, Frederick R.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 581, 811778, 81 60, B25B 1300
Patent
active
047473282
ABSTRACT:
Ratchet wrench composed of a head having a ratchet system for controlling or locking the shank of the ratchet wrench. Connected to the head of the wrench through a neck is a cylinder structure. The cylinder structure includes circumferentially spaced longitudinal grooves and is connected to an arm by casing means. The arm has a central bore and a locking pin therethrough for locking or unlocking the arm to the cylinder. In the locked position, where the locking pin is engaged with a groove of the cylinder, the wrench can be used in a conventional manner. In the unlocked position, when the locking pin end is retracted from a groove the arm of the wrench is capable of being manipulated to rapidly rotate a bolt or a nut or to conveniently position the arm when a tight or close quarter area is encountered.
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Schmidt Frederick R.
Vaught Bradley I.
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