IP Library › Granted Patent US 6,866,105
Granted Patent B2
US 6,866,105 · App. 10/660,431 · Granted Mar 15, 2005

Electrical, fan-cooled tool

Assignee: Hilti Aktiengesellschaft
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Quick Facts
Patent No.
US 6,866,105
App. No.
10/660,431
Granted
Mar 15, 2005
Kind
B2
Abstract

An electrical tool includes a housing having inlet ( 7 ) and outlet ( 8 ) openings, a brushless electric motor ( 2 ) and an inverted rectifier ( 3 ) both arranged in the housing ( 9 ) between inlet ( 7 ) and outlet ( 8 ) openings in an air stream ( 5 ) of an air volume ( 6 ), and a link condensator ( 10 ) located in the housing ( 9 ) in the air stream ( 5 ), with the inverted rectifier ( 3 ) being arranged, in the air flow direction, downstream of the link condensator ( 10 ) and upstream of the electric motor ( 2 ).

Claims (7)

1. An electrical tool, compromising a housing ( 9 ) having at least one inlet opening ( 7 ) and at least one outlet opening ( 8 ); a brushless electric motor ( 2 ) and an inverted rectifier ( 3 ) which are arranged in the housing ( 9 ) between the at least one inlet opening ( 7 ) and the at least one outlet opening ( 8 ) in an air stream ( 5 ) of an air volume ( 6 ); and a link condensator ( 10 ) located in the housing ( 9 ) in the air stream ( 5 ), the inverted rectifier ( 3 ) being arranged, in the air flow direction, downstream of the link condensator ( 10 ) and upstream of the electric motor ( 2 ).

2. An electrical tool according to claim 1 , further comprising a fan ( 4 ) arranged in the air stream ( 5 ) downstream, in the air flow direction, of the electric motor ( 2 ).

3. An electrical tool according to claim 1 , wherein the fan ( 4 ) is arranged in front of the at least one outlet opening ( 8 ).

4. An electrical tool according to claim 1 , wherein the at least one inlet opening ( 7 ) for the air volume ( 6 ) is arranged in a region of a tool handle ( 11 ).

5. An electrical tool according to claim 4 , wherein the at least one inlet opening ( 7 ) is arranged on an inner side of the tool handle ( 11 ).

6. An electrical tool according to claim 1 , further comprising transformation mechanics ( 12 , 13 ) arranged in the air stream ( 5 ) between the inverted rectifier ( 3 ) and the electric motor ( 2 ).

7. An electrical tool according to claim 1 , further comprising means ( 7 ′, 7 ″) for producing parallel air streams ( 5 ′, 5 ″) for cooling other components of the tool.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 5, 2004
From: PFISTERER, HANS-JURGEN; CECCHIN, HOLGER; WISSMACH, WALTER; KINK, CHRISTOPH; KRISTEN, FERDINAND; BAUER, RUDOLF; MANSCHITZ, ERWIN
To: HILTI AKTIENGESELLSCHAFT
Reel/Frame 014961/0911 →
Priority Claims (1)
DE 102 42 414 · Sep 12, 2002 · national
Continuity (1)
Related Publication 20040124721A1 · Jul 1, 2004