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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Wrobel; Gunter
Address:
Villingen, DE
No. of patents:
17
Patents:












Patent Number Title Of Patent Date Issued
RE34456 Miniature axial fan November 23, 1993
The invention relates to a miniature axial fan particularly of an axially compact construction, having a central motor driving a rotor disk with a housing surrounding the rotor disk in which an interior housing wall on the inflow side is cylindrical and extends past the axial center of t
5274289 Butting ring for a rotor shaft December 28, 1993
An electric motor has a rotor shaft which is journalled in an axial bearing located within a bearing tube of a stator. To control relative axial movement of the rotor shaft and bearing, a butting ring is fixed, by supporting arms, in the butt end of the rotor shaft. An abutment surface
5267842 Miniaturized direct current fan December 7, 1993
An axial flow fan for ventilating electrical and electronic equipment includes a brushless, DC external rotor-type central drive motor. The stator is supported by a bearing tube formed of plastic, which is connected together with a mounting flange to form a single piece.
5258672 Axial retaining means for the rotor shaft of an electric motor November 2, 1993
Axial retaining ring is provided for a free end of a rotor shaft of an electric motor having a rotor, with a first stop element on one of the shaft or the rotor and a second stop element in the form of a retaining ring which, during assembly of the motor, is fitted onto the free end of
5135363 Miniaturized direct current fan August 4, 1992
An axial flow fan for ventilating electrical and electronic equipment includes a brushless, DC external rotor-type central drive motor. The stator is supported by a bearing tube formed of plastic, integrally molded with a mounting flange. In one embodiment, the fan casing forms part of
5028216 Miniaturized direct current fan July 2, 1991
An axial flow fan for ventilating electrical and electronic equipment includes a brushless, DC external rotor-type central drive motor wherein the rotor is covered by a thermally-insulative impeller. The rotor is supported by a bearing tube formed of plastic, integrally moulded with a
4992029 Miniature axial fan February 12, 1991
The invention relates to a miniature axial fan particularly of an axially compact construction, having a central motor driving a rotor disk with a housing surrounding the rotor disk in which an interior housing wall on the inflow side is cylindrical and extends past the axial center of t
4823034 Brushless DC motor with tolerance compensation spring April 18, 1989
Prior art stators of brushless DC motors are securely connected with the bearing support member, and/or with the fastening flange. The printed circuit board with electronic components for commutation is arranged for space reasons between the fastening flange and the stator. This type of
4806081 Miniature axial fan February 21, 1989
The invention relates to a miniature axial fan particularly of an axially compact construction, having a central motor driving a rotor disk with a housing surrounding the rotor disk in which an interior housing wall on the inflow side is cylindrical and extends past the axial center of t
4737673 Bearing assembly for an axially compact miniature motor or ventilator April 12, 1988
A bearing assembly for an axially compact miniature motor or ventilator, wherein a sintered friction bearing unit (15) for the motor of a rotary shaft (1) of the drive motor (13) is clamped between a shoulder (6') of a bearing support tube (5) and another shoulder (7) of a closure elemen
4613778 Electric motors September 23, 1986
A construction is provided for reducing axial rotor oscillations in a small electric motor having a stator, a rotor, a shaft and sleeve bearings having end faces, the sleeve bearings journalling the shaft. The construction includes a rotation element having a sliding surface at one o
4564335 Axial flow fan January 14, 1986
An axial-flow fan comprising a fan wheel surrounded by a casing, the casing having a cylindrical flow passage in its axial central portion which is broadened at least toward the exhaust side by way of corner pockets into a regular multi-corner profile circumscribing the diameter of the f
4429245 External rotor production for synchronous hysteresis motor January 31, 1984
An external rotor electric synchronous hysteresis motor. A stator provides a rotating electromagnetic field. The hysteresis ring is formed by a deep-drawn rotation symmetrical steel rotor pot having a jacket part for surrounding the stator coaxially and having a bottom part which is
4373861 Axial-flow fan February 15, 1983
An axial-flow fan is disclosed which comprises a fan wheel and a housing casing surrounding said fan wheel, the fan wheel having a hub with a diameter which is at least half as large as the inner diameter of the housing casing and wherein the housing casing is cylindrical in the axial
4221546 Axial fan September 9, 1980
In an axial fan, the flow channel is constricted on the suction side in necked-down manner and is widened on the pressure side in diffuser-like manner. The electrical driving motor arranged in the center of the impeller has an overhung rotor, whose rotor shaft is supported in a punct
4164690 Compact miniature fan August 14, 1979
A compact miniature fan has an air-guidance housing of rectangular parallelepiped configuration. The housing has two opposite end walls and side walls. One end wall is provided with an air inflow opening. One side wall is provided with an air outflow opening. The other end wall comprises
4098547 Fan mounting arrangement with snap-type socket July 4, 1978
A socket has a pair of spaced elongated side walls which extend lengthwise along a predetermined direction, and an upper and a lower wall located at respective opposite end regions of the side walls. The socket also includes a connecting wall extending intermediate the side walls and










 
 
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