Loading patent…
AssigneeMilwaukee Electric Tool Corporation
InventorsDavid A. Hempe, Gary D. Meyer, Roderick N. Ebben, Jeffrey M. Brozek
Estimating the term…
A method of assembling a power tool, a power tool, a method of assembling an electrical device, and an electrical device includes a switched reluctance motor. The electrical device is preferably a hand-held power tool, however, any type of electrical device that includes a switched reluctance motor may benefit from any number of aspects of the invention. In one independent aspect, the invention provides a construction that reduces tolerance stack-up. In another independent aspect, the invention provides a self-contained electronics package that plugs into a switched reluctance motor to provide control operation of the switched reluctance motor. In another independent aspect, the invention provides enhanced cooling that increases the efficiency of the electrical device using a switched reluctance motor. In another independent aspect, the invention provides an encapsulated magnet that allows for contaminant free motor control over the life of the SR motor. In another independent aspect, the invention provides an apparatus and a method for aligning magnets of a magnet hub with respect to the rotor poles the magnet poles represent.
A power tool comprising:
26 The power tool as claimed in claim 25, wherein the first printed circuit board is spaced from the second printed circuit board to reduce electrical interference generated by the power components on the low voltage components.
A method of assembling a power tool, the power tool including a housing including a grip portion engageable by a hand of an operator, the housing being supportable by the operator during operation of the power tool, the power tool further including a switched reluctance motor operable to drive a tool element to work on a work piece, the method comprising the act of:
A power tool comprising:
An electrical device comprising:
A method of assembling an electrical device, the electrical device including a housing, a switched reluctance motor operable to drive a driven unit during operation of the electrical device, and electrical components operable to control the operation of the switched reluctance motor, the electrical components being arranged as a modular electronics package, the method comprising the acts of:
A power tool comprising:
A method assembling a power tool, the power tool including a housing, and a switched reluctance motor operable to drive a tool element to work on a work piece, the switched reluctance motor including a stator assembly including a stator and a support connected to the stator, the switched reluctance motor further including a rotor assembly including a shaft rotatable relative to the stator about an axis and a rotor connected to the shaft for rotation with the shaft relative to the stator, the method comprising the acts of:
A power tool comprising:
Dependencies are inferred from the claim text.