Ratchet screw driver assembly

Details Ratchet screw driver assembly Ratchet screw driver assembly

1997-03-20

1998-09-15

Scherbel, David

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81451, 81458, B25B 1300

Patent

active

058063811

ABSTRACT:
A ratchet screw driver includes a driving stem having a gear rotatably engaged in the bore of a handle and having a free end end for engaging with a fastener to be driven. A ratchet mechanism is engaged in the handle and engaged with the gear of the driving stem for selectively driving the driving stem. A barrel is rotatably engaged on the driving stem and movable along the driving stem for engaging around the fastener and for preventing the fastener from being tilted and for preventing the fastener from hurting the hand of the user.

REFERENCES:
patent: 344160 (1886-06-01), Brownson
patent: 1563178 (1925-11-01), Fegley et al.
patent: 1712196 (1929-05-01), Burger et al.
patent: 2304271 (1942-12-01), Merriman et al.
patent: 3739825 (1973-06-01), Knox
patent: 3901298 (1975-08-01), Eby
patent: 4736658 (1988-04-01), Jore
patent: 4787278 (1988-11-01), Bononi
patent: 5211086 (1993-05-01), Shu
patent: 5351586 (1994-10-01), Habermehl et al.

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