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US 2012/0234305 A1Published application
Saw for construction cutting work
AssigneeHusqvarna AB
InventorAndreas Jönsson
Life of this patent
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AssigneeHusqvarna AB
InventorAndreas Jönsson
Estimating the term…
A saw (1) being portable and/or wheeled, such as a wall saw, floor saw or masonry saw, comprising a rotatable circular saw blade (3), a drive motor (5) with an motor output shaft (9) for rotating the saw blade (3), and a transmission (20) for interconnecting the motor output shaft (9) to the rotatable saw blade (3) in order to change an unsuitable high speed and low torque combination of the motor output shaft (9) into a more useable lower speed and higher torque combination at the rotatable tool (3), wherein the transmission (20) comprises two adjustable friction saw protective clutches in parallel, which can be set at a desired predetermined value, so as to limit the maximum size of the forces that the teeth and gears of the transmission (20) are exposed to. No over dimensioning is necessary, and the transmission (20) will make out fine in rough environments. The transmission may be of single-speed or two-speed type.
1-26. (canceled)
A saw being portable and/or wheeled, such as a wall saw, floor saw or masonry saw, comprising a rotatable circular saw blade, a drive motor with an motor output shaft for rotating the saw blade, and a transmission for interconnecting the motor output shaft to the rotatable saw blade in order to change an unsuitable high speed and low torque combination of the motor output shaft to a more useful lower speed with higher torque at the rotatable tool, the transmission including an adjustable friction saw protective clutch, wherein in the transmission a first gear is mounted on the motor output shaft, two first gear assemblies are arranged to be driven in parallel by the first gear, a common second gear arranged to be driven by the two first gear assemblies in parallel, the second gear having a gear output shaft, on which the saw blade is intended to be mounted, each one of the first gear assemblies including one adjustable friction saw protection clutch.
A saw as claimed in any preceding claim, wherein the drive motor and the transmission both are arranged so that the rotatable tool can be rotated in both directions during work by changing the direction of the drive motor.
Dependencies are inferred from the claim text.