Stone working – Sawing – Rotary
Patent
1994-10-28
1997-08-05
Rose, Robert A.
Stone working
Sawing
Rotary
451358, 451453, B28D 104
Patent
active
056532180
ABSTRACT:
A motor is housed in a main body and a transmission gear of a series of three transmission gears is mounted to a motor shaft. The last of the series of transmission gears is mounted on one end of an elongated and distortable connection rod. A first bevel gear is attached to the other end of the connection rod. A second bevel gear, which in engagement with the first bevel gear, is attached to one end of a spindle. The spindle extends in a direction perpendicular to the direction in which the connection rod extends. A wheel shaped bit is attached to the other end of the spindle. Rotation of the motor is transmitted to the bit via the three transmission gears, the connection rod, the two bevel gears, and the spindle. To cut a workpiece, the rotating bit is repeatedly moved back and forth into the surface of the workpiece. A handle is attached to the main body and extends in a plane which contains an axis of the motor shaft. A secondary handle with a grip is attached to the main body so that the grip is positioned to intersect the plane.
REFERENCES:
patent: 1480263 (1924-01-01), Hoffman
patent: 1651995 (1927-12-01), Casey
patent: 2422733 (1947-06-01), Jimerson
patent: 2533924 (1950-05-01), Lillquist
patent: 3896783 (1975-07-01), Manning
patent: 4060940 (1977-12-01), Dewitt
patent: 4188935 (1980-02-01), Tubesing
patent: 4434586 (1984-03-01), Muller et al.
patent: 5466183 (1995-11-01), Kirn et al.
Sakamoto Siyouiti
Shimada Takahiko
Takeishi Kazumi
Hitachi Koki Co,. Ltd.
Rose Robert A.
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