Screw driving tool

Details Screw driving tool Screw driving tool

1996-07-26

1998-07-14

Smith, Scott A.

Tool driving or impacting

Automatic control of power operated means

Drive means responsive to torque or speed condition

173217, 192 561, 192 5657, B25B 23157

Patent

active

057789894

ABSTRACT:
A manually operable tool for driving screws has a drive pinion (3) axially fixed with a housing (1). A spindle (5) in the housing (1) is axially displaceable relative to the drive pinion against the force of a first spring (4). A clutch element (6) is located in a passageway in a collar (20) on the drive pinion (3) and is radially displaceable by a actuating member (8) for engaging the spindle (5) to the drive pinion. In the engaged position the clutch element (6) sits against a stop surface (9) in the spindle (5). The actuation member (8) is axially displaceable by stops (10, 11) located on the spindle (5) and can be axially fixed to the drive pinion by a retaining element (14) and a snap-element (15).

REFERENCES:
patent: 4951756 (1990-08-01), Everett et al.
patent: 5343961 (1994-09-01), Ichikawa
patent: 5505676 (1996-04-01), Bookshar
patent: 5588496 (1996-12-01), Elger
patent: 5673758 (1997-10-01), Sasaki et al.

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