Demag Cranes & Components Gmbh

Mannesmann Aktiengesellschaft

J&uuml;rgen Heun

Udo Gersemsky

Heinz Flaig

Markus L&ouml;bel

Giuliano Persico

Uwe Lichtenvort

Franz Schulte

R&uuml;diger Ostholt

Ralf Eising

Klaus-J&uuml;rgen Winter

J&ouml;rg F&uuml;hrmann

A flow regulating apparatus for a fluid, in particular a pneumatic choke valve, includes a housing having an inlet port and an outlet port fluidly connected by a choke channel. A throttling piston is disposed in the choke channel for movement in longitudinal direction between an initial position and an end position. The throttling piston includes a tapered section to define with the choke channel an overflow passage whose cross section is dependent on a position of the throttling piston, wherein the tapered section is configured such that a movement of the throttling piston from the initial position to the end position results in a progressive increase of the cross section of the overflow passage.

Flow regulating apparatus for a fluid, in particular a pneumatic choke valve

Apparatus for slip-free determination of a cable motion in longitudinal cable direction for a hoist, in particular a pneumatically operated cable balancing hoist, which includes a housing, and a cable drum having an outer surface area formed with a groove for receiving a cable. The cable drum is rotatably supported in the housing and moveable in a longitudinal direction in such a way that a run-off point of the cable is at a same location at any time. A sensor is provided to detect markings of the cable drum, as the markings move relative to the sensor during rotation of the cable drum, for delivering an output signal. The groove defines a helical ridge in parallel relationship to the groove, wherein the markings are provided along the ridge, and wherein the sensor is secured to the housing in confronting relationship to the ridge.

Apparatus for ascertaining a cable motion for a hoist, in particular a pneumatically operated cable balancing hoist

A brake for a hoist, includes a brake disk and a magnetic filed which is aligned transversely to the brake disk and generates a reactive force which inhibits a movement of the brake disk and is dependent on the rotation speed of the brake disk as well as a radial distance from the rotation axis. The magnetic field is formed by two magnetic poles arranged on both sides of the brake disk. A cost-efficient, compact and wear-resistant brake which operates in dependence on the rotation direction and is applicable in particular for a drive of a hoist, with the drive including a motor without generator-produced torque and/or with greatly load-dependent rotational speed, and a self-locking gear mechanism, can be implemented in such a manner that both magnetic poles are movable by the reactive force along a predetermined path from a rest position in opposition to a return force of an elastic member in rotation direction, wherein the radial distance is preset during movement along the path by a desired course of the rotation direction dependent and rotational speed dependent braking force and adjustable by the return force of the elastic member.

Brake, in particular for a drive of a hoist

A winch including a casing for accommodating an electric motor, a gearbox and a roller for winding and unwinding a traction member. In order to provide a cost-effective flat winch which can be transported by a single person and used universally, in particular for the domestic sector, the casing has a box-like configuration to exhibit a shape and size of a suitcase or attach&eacute; case, with the casing having opposite flat outer sides, with one outer side having attached thereon a suspension member, and the other outer side being formed with an opening for passage of the traction member. The electric motor, the gearbox and the roller are arranged in the casing and extend in a common plane, with the casing including a handle to allow transport of the winch by a person. The electric motor may be designed as a universal motor, and connected via a belt drive to the gearbox which is designed as a self-locking worm drive.

Portable winch

Growing community of inventors

Dortmund, Germany

Jürgen Heun

Growing community of inventors

Dortmund, Germany

J&uuml;rgen Heun

Jürgen Heun