Elongated-member-driving apparatus – With interlock means
Patent
1996-06-07
1997-11-11
Smith, Scott A.
Elongated-member-driving apparatus
With interlock means
227142, B25C 104
Patent
active
056854730
ABSTRACT:
An improved mechanism for controlling a fastener-driving tool comprises a workpiece-contacting element, a tool-controlling element movable conjointly with the workpiece-contacting element over a limited range, a spool defining having a threaded connection with the workpiece-contacting element and a swivel connection with the tool-controlling element and having axial ribs alternating with axial ribs, and a spool-restraining element movable along a radial line between a spool-restraining position and a spool-releasing position and biased toward the spool-restraining position. The spool-restraining member is arranged to restrain the spool against rotating at the swivel and threaded connections by projecting into any given one of the grooves, between the fibs nearest to the given one of the grooves, when the workpiece-contacting element is moved inwardly from an outer portion of the limited range but not when the workpiece-contacting element is within the outer portion of the limited range.
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Howell Scott A.
Shkolnikov Yury
Van Erden Donald L.
Buckman Thomas W.
Croll Mark W.
Illinois Tool Works Inc.
O'Brien John P.
Smith Scott A.
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