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US 12,312,752 B2Granted
Plate compactor
AssigneeMilwaukee Electric Tool Corporation
InventorsEvan M. Glanzer, John E. Koller
Life of this patent
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Abstract
A compactor includes a plate and an electric motor coupled to the plate and configured to impart vibration thereto. The electric motor including a stator and a rotor defining a rotational axis and having a center of mass that is not intersected by the rotational axis.
Claims10
A compactor comprising:
- a plate;
- and
- an electric motor coupled to the plate and configured to impart vibration thereto, the electric motor including
- a stator, and
- a rotor including a rotor shaft and a rotor main body surrounding the rotor shaft, the rotor defining a rotational axis and having a center of mass that is not intersected by the rotational axis, wherein the rotor main body supports a plurality of permanent magnets, and wherein an eccentric mass is directly connected to the rotor main body,
- wherein the rotor is positioned within the stator, and
- wherein the plurality of permanent magnets is a plurality of surface-mounted permanent magnets.
4 more elements
An electric motor configured for use with a compactor, the electric motor comprising:
- a motor housing;
- a stator disposed within the motor housing;
- and
- a rotor arranged within the stator and configured for rotation relative to the stator about a rotational axis, the rotor including
- a plurality of surface-mounted permanent magnets, and
- a plurality of bores arranged in an annular formation about the rotational axis,
- wherein at least one, but not all, of the bores are filled with respective weights to collectively define an eccentric mass offset from the rotational axis.
4 more elements
An electric motor configured for use with a plate compactor, the electric motor comprising:
- a motor housing;
- a stator;
- a rotor configured for rotation relative to the stator about a rotational axis, the rotor including an axial plate and a plurality of permanent magnets;
- and
- an eccentric mass coupled to the axial plate for co-rotation with the rotor about the rotational axis,
- wherein the permanent magnets are affixed to a first side of the axial plate, and wherein the eccentric mass is coupled to an opposite, second side of the axial plate.
3 more elements
Dependencies are inferred from the claim text.