Patent · US Expired

Vacuum device/blower

US7406742B2 · kind B2 · utility

2Cited by

5References

19Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Steffen Joos · Murr, DE
Uwe Gaese · Stuttgart, DE

Key dates

Filing date	Feb 17, 2006
Grant date	Aug 5, 2008
Priority date	—
Expiry date	Feb 17, 2026

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04D27/008
WIPO fieldFurniture, games
WIPO sectorOther fields

Abstract

An apparatus comprising a blower fan, a motor for driving the blower fan, a blower tube for conveying an air stream from the blower fan, and a potential compensation device that is electrically connected with the motor. The potential compensation device includes a charge compensation element having a free end that projects in an exposed manner into the air stream.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.