Drive motor with a balancing section on the rotor

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12040683
APP PUB NO 20220231573A1
SERIAL NO

17607173

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A drive motor for a suction device (400) or a machine tool in the form of a hand-held power tool (200, 300) or a semi-stationary machine tool. The drive motor (20, 120) has a stator (80) with an excitation coil assembly (86) and a rotor (40, 140) with a motor shaft (30, 130) which is rotatably mounted about a rotational axis (D) on the stator or relative to the stator (80) by means of a bearing assembly (24A) and which passes through a shaft through-opening (42, 142) of a laminated core (41, 141) held on the motor shaft (30, 130). The rotor (40, 140) has a magnet assembly (50) with at least one permanent magnet such that the rotor (40, 140) can be rotated about the rotational axis (D) by energizing the excitation coil assembly (86). The laminated core (41, 141) has at least one balancing section (55) produced by removing material from or notching the laminated core (41, 141), and/or the at least one permanent magnet is formed by a magnet body (52) which is magnetized when arranged on the laminated core (41, 141).

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First Claim

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Patent Owner(s)

Patent OwnerAddress
FESTOOL GMBHGERMAN ROOTS WENDLINGEN BADEN-WURTTEMBERG

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barth, Volker Aichwald, DE 17 202
Schön, Patrick Wendlingen, DE 4 1

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