Cordless electrically-powered concrete screed
AssigneeCurb Roller LLC
InventorsKraig Allen Pyle, Seth Nathaniel Ulmer, John Allen Armstrong
Life of this patent
Estimating the term…
Abstract
A power unit is configured for use as part of a concrete screed and includes a frame and a powered drive. The frame includes a drive housing. The powered drive is operably supported by the drive housing and is configured to rotate a rotatable concrete forming drum. The powered drive includes an electric motor and a battery operably coupled to the electric motor and configured to power the electric motor. The powered drive includes a drive shaft drivingly connectable relative to the drum, with rotation of the drive shaft causing corresponding rotation of the drum.
Claims20
A power unit for a concrete screed including a rotatable concrete forming drum, said power unit comprising:
- a frame including a drive housing;
- and
- a powered drive operably supported by the drive housing and configured to rotate the drum,
- said powered drive including an electric motor and a battery operably coupled to the electric motor and configured to power the electric motor,
- said powered drive including a drive shaft drivingly connectable relative to the drum, with rotation of the drive shaft causing corresponding rotation of the drum,
- said frame including a handle to be grasped by a user, with the handle being configured to facilitate manual advancement of the concrete screed in a forward direction,
- said handle and said drive housing being pivotally attached relative to each other at a pivot joint so that the handle is swingable relative to the drive housing about a pivot axis that is transverse to the forward direction,
- said handle being swingable among a transport position and a plurality of operating positions,
- said handle extending at last substantially alongside the drive housing when in the transport position, such that the frame is folded.
Dependencies are inferred from the claim text.