Rotor blade and rotor for a mechanical trowel, such as a concrete polisher
OwnerRichard Dhontinventor
Life of this patent
Estimating the term…
Abstract
The rotor blade for a mechanical trowel, such as a concrete polisher, comprises a blade arm (20), a spacer bar (22), and a blade plate (24). The spacer bar (22) is not integral with the blade plate (24). Through-bolts (30) with nuts (44) run through unthreaded through-holes (32, 34, 36) formed in the plate (24), the spacer bar (22), and the blade arm (20). After the removal of the bolts (30), the plate (24) is separated from the spacer bar (22).
Claims21
Rotor blade for a mechanical trowel, such as a concrete polisher, comprising
- a. a blade arm
- b. a blade plate, and
- c. a spacer bar disposed between the two,
- the blade plate and the spacer bar being removably fastened to the blade arm by threaded fastening means, characterized in that the spacer bar is not integral with the blade plate, and the threaded fastening means run through unthreaded through-holes formed in at least the blade plate and the spacer bar so that the blade plate is separated from the spacer bar when the fastening means are removed.
Rotor blade for a mechanical trowel, such as a concrete polisher, comprising
- a. a blade arm
- b. a blade plate, and
- c. a spacer bar disposed between the two, the blade plate being removably fastened to the blade arm by threaded fastening means,
- characterized in that the spacer bar is not integral with the blade plate, but is integral with the blade arm, so as to form a subassembly comprising the blade arm and the spacer bar, and in that the threaded fastening means run through unthreaded through-holes formed in at least the blade plate so that the blade plate is separated from said subassembly when the fastening means are removed.
Rotor for a mechanical trowel, such as a concrete polisher, comprising:
- a rotor hum having at least one rotor blade comprising:
- a. a blade arm attached to the hub, and
- b. a blade plate located at a level lower than the hub of the rotor and removably attached by threaded fastening means to a plate-bearing part of the blade arm,
- characterized in that the plate-bearing part of the blade arm extends vertically to a level lower than the hub of the rotor, and the threaded fastening means run through unthreaded through-holes formed in at least the blade plate.
Dependencies are inferred from the claim text.