Invention Grant
- Patent Title: Spring post for brush card for a power tool
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Application No.: US14935560Application Date: 2015-11-09
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Publication No.: US09991770B2Publication Date: 2018-06-05
- Inventor: Daniel F. Heck , Stephen P. Osborne , Jarrett A. Dunston
- Applicant: Black & Decker Inc.
- Applicant Address: US CT New Britain
- Assignee: Black & Decker Inc.
- Current Assignee: Black & Decker Inc.
- Current Assignee Address: US CT New Britain
- Agent Amir R. Rohani
- Main IPC: H02K13/00
- IPC: H02K13/00 ; H02K13/10 ; H01R39/38 ; H02K3/52 ; H02K5/14 ; H02K9/06 ; H02K5/167 ; H02K7/14 ; H02K5/18 ; H02K9/28

Abstract:
An electric motor is provided including a stator and an armature rotatably received within the stator, the armature having an armature shaft on which a commutator is mounted. The motor also includes a brush assembly having a brush card mount disposed around the commutator, a brush holder mounted on a surface of the brush card mount, and a brush disposed within the brush holder in sliding contact with the commutator to supply electric current to the commutator. A torsion spring is secured to the brush card mount adjacent the brush holder, the spring having a leg arranged to engage the back surface of the brush. A spring stop post is disposed proximate an outer periphery of the brush card mount to limit an outward movement of the leg of the spring away from the back surface of the brush.
Public/Granted literature
- US20160065039A1 Spring Post for Brush Card for a Power Tool Public/Granted day:2016-03-03
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