Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
2000-03-30
2000-11-28
Morgan, Eileen P.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
B25B 1346
Patent
active
061519936
ABSTRACT:
A ratchet spanner includes a spanner body with a head portion confined by a peripheral wall. Top and bottom flanges extend inwardly and radially from top and bottom ends of the wall. The top flange has a curved inner peripheral surface with an open-ended slot. The bottom flange defines a bottom opening, and has a circular inner peripheral surface formed with an inward flange that extends radially and inwardly into the bottom opening. A stepped insert member is inserted into the head portion, and has a curved shoulder between upper and lower portions thereof. The upper portion of the insert member is formed with an open-ended slot. The curved shoulder abuts against the top flange of the head portion for preventing upward removal therefrom. A ratchet wheel is rotatably disposed in the head portion, and has an upper annular groove and a lower circular shoulder abutting against the inward flange of the head portion for preventing downward removal therefrom. A C-shaped ring is disposed in the head portion and engages the annular groove in the ratchet wheel, the open-ended slot in the head portion, and the open-ended slot of the insert member for preventing removal of the ratchet wheel and the insert member from the head portion of the spanner body.
REFERENCES:
patent: 1769070 (1930-07-01), Nowosielski
patent: 2521419 (1950-09-01), Sellers
patent: 5392672 (1995-02-01), Larson et al.
patent: 5794496 (1998-08-01), Arnold
Danganan Joni B.
Morgan Eileen P.
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