Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1984-07-23
1985-10-15
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
192 431, B25B 1346
Patent
active
045466777
ABSTRACT:
A slip-on ratcheting drive assembly for a fastener driver, particularly a screwdriver, is adaptable for use with most common screwdrivers, and is versatile. The ratcheting drive assembly is simply moved into operative association with a conventional screwdriver handle. Typically the ratcheting drive assembly includes an outer housing, a socket received within the outer housing and rotatable with respect to it, and a ratchet structure cooperating between the socket and housing to allow ratcheting rotation of the socket with respect to the housing. The socket is held in place within the housing by a releasable locking lever, and at the end of the socket opposite its open end a polygon shaped drive projection is provided. A socket adaptor acting between the ratchet and the socket receives the socket in either of two positions, the first position with the socket open end at the housing open end so that the socket can slip on a conventional screwdriver handle, and the second position wherein the socket drive projection extends outwardly from the housing. The ratchet mechanism preferably comprises a toothed ratchet wheel rotatable about an axis concentric with the socket, and a plurality of two-lobed pawls all mounted for rotation about a common axis of rotation parallel to the axis of rotation of the wheel. A selector knob has a spring attached to it, the spring in contact with pawls. The position of the selector knob determines which of the two lobes of each pawl will be in operative association with the ratchet wheel, so as to control the direction of ratcheting rotation.
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patent: 4210185 (1980-07-01), Acevedo
patent: 4235269 (1980-11-01), Kraus
patent: 4285375 (1981-08-01), Judson
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