Inventio Ag

Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Helmut Heizmann

Christoph Liebetrau

Utz Richter

Ortwin Piper

Albrecht Morlock

Albrecht Morlok

Wolfgang Muller

Jurgen Kastle

A drive unit (1,41,51) for a self-propelled elevator car (30) which travels along a pair of guide rails (27) is connected with a car-supporting structure (16) by rocker arms (15) and contact pressure springs (29). An electric motor (2,3,26,31) is coaxial with a wheel shaft (8) which extends therethrough and has a pair of drive wheels (10) mounted at the ends thereof. The motor housing (31) is connected to the axle tubes (11) by releasably attached motor flanges (12). The motor (2,3,26,31) drives the wheel axle (8) in rotation through a speed-reducing planetary gear (33) and a brake (32,34) which prevents rotation of the wheel axle (8) can be released selectively. An auxiliary drive (35,36,37) mounted on the motor (2,3,26,31) selectively rotates the wheel axle (8) in response to a power failure.

Drive unit for a self-propelled elevator car

A drive frame for a self-propelled elevator travelling on guide rail running surfaces (22) includes a car carrying frame (5,14,16,17,18) on which are mounted driving wheels (1) coupled to a drive unit (24) and supporting wheels (2). The driving wheels (1) are rotatably mounted on axle tubes (3) connected to the drive unit (24) and rocker arms (15) pivotally mounted on frame brackets (5). The supporting wheels (2) are rotatably mounted on an axle (12) mounted on axle carriers (4) extending from the frame brackets (5). The driving wheels (1) and the supporting wheels (2) are drawn into contact with the running surfaces (22) by spring cylinders (8) connected between the axle tubes (3) and the supporting wheel axle (12) and extending through lateral passages (13) formed in a frame crossbeam (14) connected between the frame brackets (5).

Drive frame for a self-propelled elevator car

A friction wheel drive apparatus for a self-propelled elevator car movable in an elevator shaft can be mounted on the top side or bottom side of the car. The drive apparatus is connected with a counterweight by a force transmission device for balancing the car weight and a portion of the conveyed load. The force transmission device is fastened to and guided at the drive apparatus such that a force generated by the counterweight, the weight of the car and the weight of the conveyed load is applied as a contact pressure to urge a friction wheel of the drive apparatus against a travel track surface.

Apparatus for driving a self-propelled elevator

An arrangement for preselecting and shifting a motor vehicle gear shift transmission is disclosed. In order to provide a spatially compact arrangement for preselecting and shifting the motor vehicle gear shift transmission, the gear shift lever, which is to be operated manually, is guided at a joint square, the fixed bearings of which are mounted on a frame part of the motor vehicle chassis. A crosspiece of the gear shift lever forms a coupling device of the joint square.

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Stuttgart, Germany

Helmut Heizmann