Robert Krups Stiftung & Co. Kg.

Heinz-Jurgen Ohlsen

Hans-Dieter Poweleit

A portable electric hair dryer wherein the hot-air outlet of the housing is connectable with a nozzle having a smaller outlet for directing a concentrated stream of hot air against the hair for drying and/or styling. The maximum achievable output of the heating element in the housing is automatically reduced in response to attachment of the nozzle to the housing to a value such that the temperature of concentrated stream of hot air issuing from the nozzle cannot reach a value which would cause singing or burning of hair. In accordance with a presently preferred embodiment, attachment of the nozzle to the housing results in shifting of a rod-shaped mechanical adjusting member which thereby deactivates one or more stages of a multi-stage switch so that the latter can permit selection of one or more heating element outputs which do not result in overheating of air issuing from the nozzle. The adjusting member is biased toward its inoperative position which it assumes in response to detachment of the nozzle from the housing.

Portable electric hair dryer with detachable nozzle

An electrically operated portable hair dryer wherein the housing has an air inlet at its rear end and an outlet for heated air at its front end. A grid between the outlet and the air heating unit in the housing has a hollow cylindrical outer wall which is confined in the housing, a hollow frustoconical inner wall which is spaced apart from and is surrounded by the outer wall, and a cylindrical innermost wall which is spaced apart from and is surrounded by the inner wall. The walls are integrally connected to each other by radially extending webs. The walls have a common axis, and the diameter of the inner wall decreases in the direction of flow of heated air through the grid. A perforated filter is installed in the housing adjacent the inlet, and a motor-driven impeller is rotatably mounted in the housing between the filter and the heating unit. The holder for the motor is integral with an air guide which surrounds the motor and has radially extending vanes angularly offset with reference to radially extending carriers for the electric heating element or elements of the heating unit.

Portable hair dryer

A portable electric hair dryer wherein the tubular part of the housing has an inlet for atmospheric air and an outlet for heated air. The housing confines an electric motor for an impeller which induces the flow of air from the inlet toward the outlet, and an electric heater for the flow of air. The motor is surrounded by annular first insulating carrier of electric contacts which are connectable to an energy source, and the heater has a second insulating carrier for contacts which are separably connectable with the contacts on the first carrier and serve to supply energy to the heater. The first carrier has surfaces which engage adjacent surfaces on a stationary air guide having a socket for the motor behind the first carrier. The contacts on the first carrier can include flat plugs which are receivable between pairs of elastic prongs constituting the respective contacts on the second carrier, or vice versa.

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Wuppertal, Germany

Heinz-Jurgen Ohlsen