Wittur Holding Gmbh

Karl Kriener

René Holzer

Christoph Russwurm

Leopold Latschbacher

Lukas Schwaigerlehner

Bernd Winkler

Karl Ladner

Erich Berghammer

Peter Ladner

Markus Leichtfried

Herbert Karner

Franz Grubner

Lukas Schwaigerlehrer

Marlene Rechberger

Karl Sturmlechner

A triggering unit for actuating an elevator braking device, having a triggering base body which can be mounted on an elevator car, a trigger, a contact element and a coupling link via which the contact element can be connected to an elevator braking device, the triggering unit keeps the contact element at a distance from the guide rail in the untriggered state and brings it into frictional contact with the rail in the triggered state, so that the contact element moves along a gap between the triggering base body and the guide rail, carries along the coupling link and causes the elevator braking device to respond automatically due to the movement of the coupling link, wherein the triggering unit can be mounted separately on the elevator car at a distance from the elevator braking device and is connected to the elevator braking device exclusively via the coupling link.

Release unit for actuating an elevator brake device

A triggering unit for actuating an elevator braking device, having a triggering base body, a trigger, a contact device and a coupling link. The contact device comprises a swivel lever and at least two contact elements, the swivel lever being pivotably anchored on one side of the guide rail and bearing a first contact element in the region between its anchoring and the guide rail, wherein the first and the second contact elements are arranged on the swivel lever in such a manner that the swivel lever automatically pulls itself against the guide rail under the influence of the forces occurring between the contact elements and the guide rail in the triggered state, and the swivel lever is anchored to the triggering base body such that it executes a movement which generates tension or pressure at the coupling link, so that the coupling link actuates the elevator braking device.

Triggering unit for actuating an elevator braking device

A braking device for an elevator with a rail-guided car, which encompasses a guide rail and holds a braking element in position on one side of the guide rail and holds another braking element in position on the opposite side of the guide rail, wherein at least one of the braking elements is held in its standby position by a switchable retaining magnet against the force of an automatic actuator. The braking element is automatically driven in between the basic body and the guide rail, if the car moves at the point in time at which the braking element abuts against the guide rail. The retaining magnet is equipped with an air gap reducing agent, which reduces or eliminates an air gap between the retaining magnet and the braking element such that the retaining magnet keeps the braking element magnetically trapped again, as soon as it is switched accordingly.

Braking device with automatic releasability in all operating situations

An elevator with a brake device for braking a car and/or keeping it stationary on at least one braking rail. The brake device has at least two brake shoes situated opposite from each other, and at least one brake clamp with two clamp arms for opening and closing clamp jaws acting on the brake shoes. In certain embodiments, only one of the clamp arms is connected to the car in pivoting fashion via a bearing with a pivot axle that is affixed to the car, oriented parallel to the direction of travel. In certain embodiments, the brake clamp is supported on the car in such a way that the clamp jaws, by pivoting together in the same direction, are able to follow a movement that is forced on a brake shoe due to local position deviations of the associated braking rail.

Elevator with brake device in the manner of a clamp brake

An elevator system with an elevator car, elevator en guide rails, at least one braking rail, and a brake mechanism and/or safety gear that determines the elevator car movement when activated and in turn has at least one brake block that cooperates with the braking rail. The active surface of this brake block that comes into contact with the braking rail functioning as the brake lining is at least one welding bead whose surface hardness is greater than surface hardness of the braking rail. A method for manufacturing such an elevator brake block includes welding at least two welding beads on a brake lining support composed of a weldable, preferably low-alloyed steel, which constitutes the brake lining that is brought into frictional contact with the braking rail during operation.

Elevator brake mechanism and/or safety gear with welded brake lining

Growing community of inventors

Viehdorf, Austria

Karl Kriener