Robert Boschgmbh

Reuben Agnon

Wolfgang Scheidel

Otto Brass

Claudius Muschelknautz

Peter Nolting

Jochen Goehre

Christof Bernauer

Claude Bleger

Thomas Bertolini

Gerhard Zink

Josef Foerstera

Peter Froehlich

Walter Lehnert

Christian Allgeier

Christoph Eitel

Alfred Maier

The electric motor, especially a permanently excited direct current motor, has a housing (,) carrying a magnetic pole (,) and a grounding ring (,) made from magnetically conductive material and mounted on the housing. In order to reduce the noise generation of the motor the grounding ring (,) is a knit article made from a thread-form or wire-form magnetically conductive material.

Electric motor, especially a permanently excited direct current motor

Retaining device for an electric motor

The muffler for a fan, especially a bypass air fan of an internal combustion engine, has a housing provided with an air outlet opening and an air inlet opening and including a housing pot having a top opening and a flat housing cover at least partially closing the top opening of the housing pot, the air inlet opening being coaxial to the housing axis and advantageously provided in the housing cover, and a damping insert made from a sound absorbing material and being provided with at least one helical or spiral air flow passage providing a connection between the air outlet opening and the air inlet opening so that air can flow through the air inlet opening to the air outlet opening. In one variation the air outlet opening can open radially from the housing pot and the air inlet opening can be provided centrally in a flat housing cover. In another variation the air outlet opening includes two throughgoing openings of approximately equal diameter provided in the housing cover and spaced an equal distance from the housing axis and the damping insert is made from a plurality of substantially equal disks stacked one on the other in the housing pot of the housing.

Muffler for a fan, particularly for an internal combustion engine

A fan wheel has a cup shaped hub having an outer cup wall with a plurality of vanes and a cup bottom connectable with a shaft of a drive and provided at its inner side with a plurality of ribs defining a plurality of fields therebetween. The cup bottom in the region of the fields has a plurality of depressions extending from its inner side and having a width approximately 70% of a thickness of the cup bottom.

Fan wheel with cup shaped hub

Growing community of inventors

Sasbach, Germany

Reuben Agnon