Robert Boschgmbh

Alfred Kärcher Se Co. Kg

Michael Sperl

Florian Esenwein

Juergen Wiker

Daniel Dennis

Juergen Kloepfer

Thomas Hofer

Torsten Riek

Rudi Bareiter

Jürgen KLÖPFER

Simon Walter

Jürgen Erdmann

The present invention relates to a electrical energy storage device for an electrical appliance, which electrical energy storage device includes a housing, which housing defines a receiving space in which at least one electrical energy store is received, which electrical energy storage device includes at least two electrically conductive contacts which are accessible from an outer side of the housing and which are electrically operatively connected directly or indirectly to the at least one electrical energy store, wherein the housing has at least one contact opening, through which the at least two contacts are accessible or protrude from the housing, and wherein the at least one contact opening is surrounded by a continuous sealing element.

Electrical energy storage device and electrical appliance

A battery-operated hand power tool, in particular an eccentric sander, includes at least one electronically commutated electric motor that acts upon an output shaft and that is configured to drive a working tool. The hand power tool further includes at least one motor housing part that accommodates the electronically commutated electric motor. The electronically commutated electric motor and the output shaft define a common first axis that is coaxial with the output shaft. At least one handle region of the hand power tool accommodates at least one set of electronics configured to energize the electronically commutated electric motor. The motor housing part and the handle region are disposed at an angle to each other. The working tool has a diameter that is between 75 and 150 mm, but preferably is between 115 and 125 mm.

Battery-operated eccentric sander having an electronically commutated electric motor

Growing community of inventors

Stuttgart, Germany

Michael Sperl