# US 6,293,871 B1 · Torsionally flexible coupling

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 6,293,871 B1
- Document ID: US6293871B1
- Status: Granted
- Kind: B1
- Application number: 09/612,012
- Filed: 2000-07-07
- Granted: 2001-09-25
- Earliest claimed: 1999-08-10
- Assignees: Ellergon Antriebstechnik GmbH
- Inventors: Matthias Geislinger
- Web page: https://patentgrep.com/patent/US6293871B1

## CPC

- F16D 3/76: shaped as an elastic ring centered on the axis, surrounding a portion of one coupling part and surrounded by a sleeve of the other coupling part
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES

## Abstract

The description refers to a torsionally flexible coupling with an outer rim (5) flexibly rotatable against a hub (1). To create favorable construction features, it is suggested to provide at least one ring-like compound body (2) between the hub (1) and the outer rim (5), consisting of at least one spiral layer (3) of an elastomer, with the threads of this spiral layer (3) being connected shear-resistant with a tensionally elastic and flexible intermediate layer (4), filling the spaces between the threads. The elasticity of tension and of shearing of this intermediate layer (4) are smaller than that of the elastomer layer (3).

## Claims

### Claim 1

Torsionally flexible coupling with an outer rim flexibly rotatable against a hub, comprising at least one ring-like compound body between the hub and the outer rim, the compound body consisting of at least one spiral layer of an elastomer, and the spiral layer having threads connected shear-resistant with a tensionally elastic and flexible intermediate layer, filling the space between the threads, wherein the elasticity of tension and of shearing of this intermediate layer is smaller than that of the elastomer layer.

### Claim 2 (depends on 1)

Coupling according to claim 1, wherein at least two layers of an elastomer, arranged rotationally symmetrical, with the corresponding intermediate layers are provided, with the threads of the elastomer layers extending over an angle at circumference exceeding a mutual angular distance of these layers.

### Claim 3 (depends on 1)

Coupling according to claim 1, comprising at laest two concentrically arranged compound bodies interconnected via an intermediate ring.

### Claim 4 (depends on 1)

Coupling according to claim 1, wherein the intermediate layer is made of fiber reinforced plastic or spring steel.