Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1996-06-24
1998-05-12
Morgan, Eileen
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
81490, 81438, 81 63, B25B 1346
Patent
active
057492719
ABSTRACT:
A ratchet screwdriver includes a handle having a chamber in its interior for accommodating a ratchet mechanism, a drive sleeve of the ratchet mechanism being provided to cooperate with a transmission shaft inserted through a hole of the handle, the transmission shaft having a bit at either end, the bit at one end of the transmission shaft being utilized as a structural element for power transmission while the bit at the other end being used to drive a screw. The ratchet mechanism may be enveloped by a bit receptacle made of plastics before the mechanism is put inside the chamber such that the drive sleeve is fitted with the transmission shaft fixedly located at the front end of the handle. A rear cap may be provided at the rear end of the handle.
REFERENCES:
patent: 3114401 (1963-12-01), Johnson
patent: 3824881 (1974-07-01), Wright
patent: 4448097 (1984-05-01), Rocca
patent: 4466523 (1984-08-01), De Carolis et al.
patent: 4621718 (1986-11-01), DeCarolis
patent: 4762032 (1988-08-01), Chow
patent: 5142953 (1992-09-01), Lin
patent: 5339711 (1994-08-01), Shu
patent: 5533429 (1996-07-01), Kozak
Danganan Joni B.
Morgan Eileen
LandOfFree
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