Angle grinder with electric drive

Patent 6632128 Issued on October 14, 2003. Estimated Expiration Date:

April 15, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Electric rotary power tool apparatus holdable by hand during operation, kit comprising the same, and novel switch means therefor
Patent #: 4905423
Issued on: 03/06/1990
Inventor: van Laere

Electric tool
Patent #: 5170851
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Inventor: Kress, et al.

Power tool having a quick release system for attaching a working element
Patent #: 5678272
Issued on: 10/21/1997
Inventor: McCracken, et al.

Plug-in modular brush cartridge
Patent #: 5793141
Issued on: 08/11/1998
Inventor: Simonsen, et al.

Cut-out brush for electric hand tool
Patent #: 6087754
Issued on: 07/11/2000
Inventor: Berger

Portable grinder with double seal bearing Patent #: 6454640
Issued on: 09/24/2002
Inventor: Siedler, et al.

Inventors

Assignee

Robert Bosch GmbH

Application

No. 09/914968 filed on 04/15/2002

US Classes:

451/358, Rotary cylinder tool451/344, Portable abrader451/357, Orbital motion tool451/359Rotary disk tool

Examiners

Primary: Hail, III, Joseph J.
Assistant: Grant, Alvin J.

Attorney, Agent or Firm

Striker; Michael J.

International Classes

B24B 23/02 (20060101)
B24B 23/00 (20060101)
H02K 5/14 (20060101)
H02K 5/167 (20060101)
H01R 39/00 (20060101)
H01R 39/38 (20060101)
H02K 23/66 (20060101)
H02K 5/24 (20060101)
H02K 3/46 (20060101)
H02K 3/52 (20060101)

Foreign Application Priority Data

2000-01-10 DE

Abstract

A power tool (10), in particular an angle grinder, having a housing (12) that receives an electric motor (21) and a gear (26), the motor (21) having a rotor (210) which is guided in rotor bearings (2100) and on one hand carries a collector (2102), which collector can be put into contact with a voltage source via carbon brushes (23) supported in brush plates, is made sturdier and easier to install in that the housing (12) comprises two longitudinally split housing shells (120, 121), and that the brush plates are part of a bearing bridge (24) that carries both the rotor bearing (2100) and the carbon brushes (23), and the bearing bridge (24), in the guide region of the carbon brushes (23), comprises plastic.