Metzeler Kautschuk Gmbh

Metzeler Gmbh

Metzeler Automotive Profiles Gmbh

Metzeler Gimetall Ag

Bayer Aktiengesellschaft

Volker Hartel

Carl Heynemann

Matthias Richter

Manfred Hofmann

Gunter Oppermann

Gerhard Hoglinger

Hermann Kahlefeld

Dieter Theisen

Manfred Raubach

Michael Ghibu

John W Goossens

Wolfgang Grape

Mathias Gugsch

Werner Hundt

Siegfried Muller

Hans Schreiber

Josef Rachel

Manfred Grothe

A molded hose branch of rubber includes an assembly formed by slipping completely vulcanized rubber hose lengths with ends onto free ends of a plastic tubing branching piece. The assembly is placed into a mold, and a thermoplastic material, for instance a blended mixture of polypropylene and EPDM, is injection molded around the assembly so as to join the thermoplastic material to the rubber hose lengths. This results in a sleeve around the rubber hose lengths and free parts of the tubing branching piece between the ends of the rubber hose lengths.

Molder rubber hose branch

A method for producing molded hose branches of rubber and a molded hose branch produced according to the method, includes slipping completely vulcanized rubber hose lengths with ends onto free ends of a plastic tubing branching piece for forming an assembly, placing the assembly into a mold, and injection molding a thermoplastic rubber material in the form of a blended mixture of polypropylene and EPDM around the assembly for joining the thermoplastic material to the rubber hose lengths for forming a sleeve around the rubber hose lengths and free parts of the tubing branching piece between the ends of the rubber hose lengths.

Method for producing molded hose branches from rubber and a hose

A method for varying the spring rigidity of an elastomer engine mount for motor vehicles, having two rubber bodies being at least intermittently connected in series, includes intermittently spanning one of the two series-connected rubber bodies as a function of predetermined operating parameters with rigid components of the mount by means of a separate force brought to bear from the outside. Induced forces are elastically effectively received with only the other of the two rubber bodies. An elastic engine mount, especially for motor vehicles, includes rotationally symmetrical rubber bodies disposed one above the other in series. The first rubber body is fixed between an engine mount plate and a support plate. The second rubber body is fixed between the support plate and a retaining plate to be pivoted at a vehicle body. An annular housing surrounds and partly encompasses the second rubber body. One end surface of the housing is rigidly connected to one of the plates bounding the second rubber body and the other end surface of the housing encompasses the rim of another of the plates with play. A spreading device operates between the one plate and the other plate for bringing those plates plate into contact with the housing and spanning the second rubber body.

Method for varying the spring rigidity of an elastomer mount, and

A method for varying the spring rigidity of an elastomer engine mount, such as for motor vehicles, includes bringing one of two at least intermittently simultaneously loadable parallel-connected spring bodies into continuous engagement with supports and bringing the other of the two spring bodies into intermittent contact with supports as a function of predetermined operating parameters, for absorbing induced forces in parallel with the two spring bodies. The other spring is connected in parallel with a force brought to bear separately from the outside for causing it to contact its supports. An elastic engine mount for motor vehicles includes a hollow-cylindrical spring body and a solid-cylindrical spring body disposed concentrically relative to one another between an engine mount plate and a support plate to be fixed to a vehicle body. According to one embodiment, a diaphragm is disposed between the lower end surface of the solid-cylindrical spring body and the support plate for defining a hollow chamber between the diaphragm and the support plate. The hollow chamber operatively connects the solid-cylindrical spring body with the plates upon forced introduction of hydraulic fluid into the hollow chamber. According to another embodiment, a mechanical plunger is disposed between the lower end surface of the solid-cylindrical spring body and the support plate. A threaded bolt engages the mechanical plunger. A control motor drives the threaded bolt and operatively connects the solid-cylindrical spring body with the plates.

Method for varying the spring rigidity of an elastomer mount, and a

A hydraulically acting damping element includes a main chamber and a compensation chamber. Two rigid end walls and a rubber-elastic circumferential wall surround one of the chambers. An elastic, pressure-stable bellows has ends and a circumference. The bellows is disposed concentrically inside the one chamber and rigidly joined to the end walls with the main chamber inside the bellows and the compensation chamber between the bellows and the circumferential wall. An over-flow circuit is formed on one of the ends of the bellows and extends over at least part of the circumference of the bellows for hydraulically connecting the main chamber and the compensation chamber.

Hydraulically acting damping element

An annular resilient body of fiber composite material for vibration-insulating support of drive assemblies includes at least one wound body having a circumferential direction and a loading direction. The at least one wound body includes a plurality of wound concentric layers formed of synthetic resin impregnated fibers extending in the circumferential direction and transverse to the load direction, and at least one layer of fibers extending at an angle relative to the concentric layers. Force-inducing fastening elements are disposed on two opposite sides of the at least one wound body. The fastening elements are formed of metal brackets at least partly encompassing the at least one wound body and elastic rubber layers bracing the metal brackets against the at least one wound body.

Annular resilient body made of fiber composite materials

The invention relates to a two-chamber bearing, in particular for motor vehicles, which has hydraulic damping, the liquid-filled chambers of which have rubber elastic peripheral walls and are connected to each other by a line which is provided in a rigid intermediate plate. According to the present invention, a so-called active bearing is provided which can be rapidly adapted to the operational conditions in each case by filling the chambers with an electroviscous liquid, the viscosity of which may be controlled by applying an electrical field in the area of the line which passes through the intermediate plate.

Two-chamber engine bearing which has hydraulic damping

A method for producing and vulcanizing an inflatable hollow body from a double cloth having upper and lower plies with edges and pile yarns spacing the plies apart includes applying a respective gas-tight unvulcanized layer of rubber to each of the upper and lower piles of the double cloth. The edges of the upper and lower plies are joined with angle braces forming a hollow body. The hollow body is evacuated over a predetermined period of time and the hollow body is vulcanized in the evacuated state.

Method of producing an inflatable hollow body

A spring element with hydraulic damping includes a rubber-elastic peripheral wall and two rigid end walls defining a chamber therebetween, an electroviscous fluid filling the chamber, a stack of at least two metal plates disposed in the chamber, and elastic rubber elements disposed between and maintaining mutual spacings between the metal plates, the metal plates being alternately connected to a voltage source and to ground potential.

Spring element with hydraulic damping

A pneumatic spring element includes a rubber-elastic peripheral wall and two rigid end walls defining a chamber therebetween, a bellows-like spring body disposed inside the chamber defining an outer sub-chamber between spring body and the peripheral wall, the spring body being subjected to compressed air in the interior thereof, and an electroviscous fluid filling outer sub-chamber and being controlled by an electrical field.

Pneumatic spring element

An active two-chamber engine mount with hydraulic damping includes rubber-elastic peripheral walls, a rigid intermediate plate disposed within the peripheral walls defining two chambers interconnected by a channel formed in the intermediate plate, one of the chambers being an engine-side chamber bordered by one of the peripheral walls acting as a support spring exercising a spring deflection, mutually parallel and overlapping electrodes defining the channel, an electro-viscous fluid filling the chambers, a device for applying an electric field to the electrodes controlling viscosity of the fluid, and a device for varying the length of the channel and the degree of overlap of the electrodes in dependence on the spring deflection of the support spring.

Active two-chamber engine mount with hydraulic damping

An active two-chamber engine mount with hydraulic damping includes rubber-elastic peripheral walls, a rigid intermediate plate disposed between the walls defining chambers, an electro-viscous fluid filling the chambers and flowing in a given fluid flow direction through at least one overflow opening formed in the rigid intermediate plate. At least two mutually parallel metallic mesh plates are successively disposed across the given fluid flow direction in the vicinity of the at least one overflow opening, and a control device for alternatingly applying an electric field to the mesh plates as electrodes for controlling the viscosity of the fluid.

Active two-chamber engine mount

A two-chamber engine mount with hydraulic damping includes a cup-shaped housing having a cylindrical wall with an inner surface and a given height, an open upper end and a bottom. A frustoconical rubber-elastic bearing spring with inner and outer surfaces, a base region and substantially the given height is disposed in the housing. An engine mount plate is supported on the bearing spring. A flexible-volume, rubber-elastic diaphragm closes off the open upper end of the cylindrical wall. The inner surface of the support spring and the bottom of the housing defines a working chamber and the outer surface of the bearing spring, the inner surface of the cylindrical wall and the diaphragm defines a compensating chamber. The base region of the bearing spring has a transfer port formed therein interconnecting the working chamber and the compensating chamber.

Two-chamber engine mount

An elastic engine mount with a dynamic stiffness decreasing in dependence on frequency for damping sound transmitted through solids includes a leaf spring having a central region and ends, an elastomer support disposed on the central region of the leaf spring for transmitting force to the leaf spring in a given direction and loading the leaf spring by bending, and at least two support points supporting the leaf spring, the ends of the leaf spring extending freely beyond the support points forming auxiliary masses coupled to the elastomer support vibrating in a direction opposite to the given force transmission direction.

Elastic engine mount

A co-oscillating, volume-changing resonator in the form of a silencer, includes a lens-shaped housing formed of a material having a given flexural stiffness, the housing being arched defining an evacuated cup-shaped cavity formed therein, and a coating layer completely surrounding the housing, the coating layer being formed of a material having a flexural stiffness being at most one-third of the given flexural stiffness of the material of the housing.

Growing community of inventors

Germering, Germany

Volker Hartel