Concrete floor finisher
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 15, 1980
Grant Date -
N/A
app pub date -
Jun 27, 1978
filing date -
Jun 27, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A concrete floor finisher for finishing newly-placed concrete. The machine comprises a rotor hub, a plurality of rotor arms on the hub for rotation about an axis, a blade pivotable on each arm, and a motor for driving the rotor hub. The pitch of the blades is adjustable depending upon the condition of the wet concrete, by a piston and cylinder centrally located about the axis of rotation of the rotor, and a stud connected at one end to the blades and at its other end engaging a portion of the piston to adjust the pitch of the blades in response to the axial displacement of the piston.
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Family
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Cited Art Landscape
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