Pierburg Gmbh

Pierburg Ag

Siemens Aktiengesellschaft

Siemens Mobility Gmbh

Fritz Egger Gmbh & Co. Og

Frank Kemmerling

Rainer Peters

Klaus Muckelmann

Gunter Van De Venne

Michael Bonse

Gerd Meyer

Irfan Kasap

Andre Wiegelmann

Heinrich Kohnen

Arnd Rüter

Michael Kiesel

Yüksel Taylan

Jürgen Froese

Thomas KÜBECK

Ralph GÄRTNER

Petra Silbermann

Birgit Neumann

Timothy Ruiter

Susanne Becker

An improvement in an electrical air pump having a housing with a pump mechanism at one end and an electric motor at the other end. The pump mechanism has at least one lightweight pump impeller made of plastic whose hub is press-fit on a shaft of the electric motor. The hub is provided with a plurality of grooves distributed around a bore in the hub which receives the motor shaft. The grooves form spaces between an inner surface of the hub and an outer surface of the shaft and the spaces are filled with an adhesive to bond the hub to the shaft. The grooves extend longitudinally or spirally along the entire length of the hub. The grooves are relatively shallow and have a depth of approximately 0.05 mm.

Connection between a rotor hub and a shaft of an electric motor of an

An electrically driven air pump has a housing incorporating an electric motor in one section of the housing and a pump mechanism coupled to the motor in another section of the housing. The housing has a pump cover enclosing the pump mechanism, made of plastic and having an end wall to which a metal reinforcement member is joined by injection molding. The metal reinforcement member is formed as a ring having inner and outer perimetral surfaces and a plurality of radial slots are formed in the ring for passage of the plastic material therethrough to anchor the reinforcement member to the end wall. The slots extend from the inner perimetral surface of the ring towards the outer perimetral surface but terminate before reaching the outer perimetral surface. The outer perimetral surface of the metal reinforcement member is free and unobstructed for undergoing dimensional change due to temperature variation.

Metal reinforced pump cover of an electrically driven air pump

Growing community of inventors

Grevenbroich, Germany

Frank Kemmerling