Backpack blower
AssigneeTechtronic Cordless GP
InventorsRonald J. Hoffman, Eric Nolin, Christopher A. Holman, Lance A. Eckard
Life of this patent
Estimating the term…
Abstract
A blower including a housing at least partially defining a chamber, a motor including a drive shaft defining a rotational axis, and an impeller drive by the motor to generate an air flow in the chamber. The blower also includes a coupler operably connected between the drive shaft and the impeller to transmit torque therebetween, the coupler being connected to one of the drive shaft and the impeller and including a plurality of ribs configured to engage the other of the drive shaft and the impeller, each rib defining a rib axis transverse to the rotational axis, each rib axis being arranged tangent to a circle centered on the rotational axis.
Claims7
A blower comprising:
- a housing at least partially defining a chamber;
- a motor including a drive shaft defining a rotational axis;
- an impeller driven by the motor to generate an air flow in the chamber;
- and
- a coupler operably connected between the drive shaft and the impeller to transmit torque therebetween, the coupler being connected to one of the drive shaft and the impeller and including a plurality of ribs configured to engage the other of the drive shaft and the impeller, each rib defining a rib axis transverse to the rotational axis, each rib axis being arranged tangent to a circle centered on the rotational axis.
Dependencies are inferred from the claim text.