# US 8,998,188 B2 · Elastomer components that can be prestressed by pressure means and method for the production thereof

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- Number: US 8,998,188 B2
- Document ID: US8998188B2
- Status: Granted
- Kind: B2
- Application number: 12/935,010
- Filed: 2009-03-31
- Published: 2011-01-27
- Granted: 2015-04-07
- Earliest claimed: 2008-04-03
- Assignees: FM Energie GmbH & Co. KG
- Applicants: Franz Mitsch
- Inventors: Franz Mitsch
- Web page: https://patentgrep.com/patent/US8998188B2

## CPC

- F16F 1/3615: {with means for modifying the spring characteristic (F16F1/371 takes precedence)}
- F03D 13/20: Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D 13/22: {Foundations specially adapted for wind motors}
- F16F 1/44: loaded mainly in compression
- F16F 2228/08: pre-stressed
- Y02E 10/72: Wind turbines with rotation axis in wind direction
- Y02E 10/728: Onshore wind turbines
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F03D: WIND MOTORS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

Elastomer components (104), which are to have an elastomer volume with a sufficiently large prestress, as is required, for example, for use in wind energy plants. The elastomer components (104) are substantially based on the incorporation and integration of separating elements (105) into the elastomer body of the component, the elements are disposed either individually or in structures. The body may be compressed by pressure supplied into the region, between the separating elements and the surrounding elastomer material, or directly into the separating elements, such that elastomer components are prestressed in a dynamically adjustable manner.

## Claims

### Claim 1

A pre-stressable elastomer component comprising first and second plates, at least one elastomer layer and at least one pressure-resistant supply line with a valve, the first and the second plates defining a central axis, the entirety of the elastomer layer being formed between the first and the second plates and radially spaced from the central axis,
wherein the elastomer layer (3, 104) has regions in an interior thereof comprising at least one separating element (105, 107, 115, 116) that is completely encased by the elastomer layer, the supply line with the valve passes through the elastomer layer and communicates with the at least one separating element such that, on supplying a pressure media (5) via the supply line with the valve (101), either cavities or chambers (106, 108, 114) form in the region of the at least one separating element (105, 107, 115, 116) due to the surrounding elastomer layer being forced apart, where the cavities or chambers are filled with the pressure media (5) and expanded, causing the surrounding elastomer layer (3, 104) to be squashed, and the elastomer component to be pre-stressed, and the entirety of the cavities or chambers being radially spaced from the central axis.

### Claim 2 (depends on 1)

The elastomer component according to claim 1, wherein the separating element (105, 107, 115, 116) is surrounded by the surrounding elastomer layer without being firmly connected thereto, and the cavities or chambers (106, 108, 114) are formed around the separating element due to an introduction of the pressure media (5) therein, the cavities or chambers being completely delimited by the surrounding elastomer layer, the separating element being spaced from the central axis and the cavities or chambers being annular.

### Claim 3 (depends on 1)

The elastomer component according to claim 1, wherein the first and the second plates are made from a non-elastic material, the first plate comprises an annular groove and the second plate comprises an annular projection, the first and the second plates mate with each other such that the projection is received by the groove and together the projection and the groove define an annular hollow which bounds the elastomer layer.

### Claim 4 (depends on 1)

The elastomer component according to claim 1, wherein the first and the second plates are respectively upper and lower terminal plates (1, 2, 117, 118, 110-113) made from non-elastic material to which the elastomer layer (3, 104) is firmly connected or between which the elastomer layer is clamped, the at least one separating element being located with respect to the central axis centrally between the upper and the lower terminal plates and separated therefrom both radially and axially by the elastomer layer.

### Claim 5 (depends on 4)

The elastomer component according to claim 4, wherein the pressure media (5) is supplied, via the supply line with the valve, to the region of the at least one separating element, the supply line with the valve either being aligned along an axis that is parallel to the central axis so as to supply the pressure media from an exterior through the upper terminal plate or being aligned normal to the central axis so as to su the pressure media directly via a side through the elastomer layer (3, 104).

### Claim 6 (depends on 5)

The elastomer component according to claim 5, wherein the elastomer component is in a form of at least one of a bush, a half-bush and a bush segment, and the upper and the lower terminal plates are either cylindrical (112, 113) or conical shells (110, 111), half-shells or correspondingly shaped segments of the shells or the half-shells.

### Claim 7 (depends on 6)

The elastomer component according to claim 6, wherein the separating element (4, 105, 107, 115, 116), including the supply line (10, 101), is accommodated in the bush segment which is inserted into the bush, where elastomer regions (3, 104) of the bush and the bush segment are at least partially in direct contact with one another for pressure transmission.

### Claim 8 (depends on 5)

The elastomer component according to claim 5, wherein the elastomer component is in a form of a layer spring, and the upper and the lower terminal plates are formed as discs (117, 118), which are connected to either machine or generator parts, and the elastomer layer (3, 104) forces the discs against one another in an elastic manner.

### Claim 9 (depends on 1)

The elastomer component according to claim 1, wherein the elastomer component has at least one non-elastic interlayer which is located in the interior of the elastomer layer and is connected to elastomer material of the elastomer layer.

### Claim 10 (depends on 1)

The elastomer component according to claim 1, wherein the separating element is a deformable hollow body (4) which has an elastic outer wall which is fillable and expanded with the pressure medium (5) via the supply line (10, 101).

### Claim 11 (depends on 10)

The elastomer component according to claim 10, wherein the deformable hollow body is an elastic tube into which the pressure medium (5) is introduced.

### Claim 12 (depends on 1)

The elastomer component according to claim 1, wherein the separating element is one of an inlaid wire, a filament and a hollow wire (105, 116) which either comprises or is surrounded by a material which is incapable of forming a bond with the surrounding elastomer layer (3, 104) during production thereof.

### Claim 13 (depends on 1)

The elastomer component according to claim 1, wherein the separating element is one of an ink layer structure, a paint layer structure, a plastic layer structure, a paper layer structure and a metal layer structure (107, 116) which either comprises or is surrounded by a material which is incapable of forming a bond with the surrounding elastomer layer (3, 104) during production thereof.

### Claim 14 (depends on 13)

The elastomer component according to claim 13, wherein the one of the ink layer structure, the paint layer structure, the plastic layer structure, the paper layer structure and the metal layer structure (107) is produced by one of printing and adhesive bonding.

### Claim 15 (depends on 1)

The elastomer component according to claim 1, wherein the separating element (4, 105, 107, 115, 116) has one of an open and a closed structure and is formed into one of a two-dimensional structure and a three-dimensional structure within the surrounding elastomer layer (3, 104).

### Claim 16 (depends on 15)

The elastomer component according to claim 15, wherein the separating element has one of a ring-shaped structure, a spiral-shaped structure, an irregular structure, an interrupted structure and a continuous structure.

### Claim 17 (depends on 1)

The elastomer component according to claim 1, wherein the pressure media (5) is one of air, a gas, a hydraulic, a viscous fluid and a polymerizable fluid.

### Claim 18 (depends on 1)

The elastomer component according to claim 1, wherein the elastomer component has a variably adjustable pre-stress which is achieved by one of supplying the pressure media (5) to the re ion of the at least one separating element, and removing the pressure media (5) from the region of the at least one separating element, via the supply line and by opening and closing the valve.

### Claim 19 (depends on 1)

The elastomer component according to claim 1, wherein the elastomer layer (3, 104) has one of a plurality of corresponding separating elements and a plurality of units of corresponding separating elements (4, 105, 107, 115, 116), which are uniformly distributed in either the elastomer component or a sub-unit of the elastomer component, such that a uniform, symmetrical pressure distribution, and thus pre-stressing, occurs in the elastomer component or the sub-unit of the elastomer component.

### Claim 20 (depends on 19)

The elastomer component according to claim 19, wherein a plurality of sub-units of the elastomer component form an elastomeric arrangement for carrying out artificial movements, and are functionally connected to one another, and intelligent computer-supported electronics specifically control individual structures in the separating elements of the plurality of the sub-units of the elastomer component and ensure dynamic pressure distribution and thus variable expansion in locally different regions of the associated elastomer layers, such that dynamic deformations in the elastomeric arrangement arise and specific movement of individual elements of the arrangement are carried out with aid of specific control due to different compression/decompression of the elastomer material relative to one another in a region of associated separating elements.

### Claim 21 (depends on 20)

The elastomer component according to claim 20, wherein each of the individual elastomer layers (3, 104) has a shape and a design which promotes a desired specific movement.

### Claim 22 (depends on 21)

The elastomer component according to claim 21, wherein the elastomeric arrangement is one of a gripper and an artificial hand.

### Claim 23 (depends on 20)

The elastomer component according to claim 20, wherein the elastomeric arrangement is used for generation of artificial movements and actions caused thereby.

### Claim 24 (depends on 1)

The elastomer component according to claim 1, wherein the elastomer layer (3) has one of a plurality of corresponding separating elements and a plurality of units of the corresponding separating elements (4, 105, 107, 115, 116), which are distributed differently in one of the elastomer component and a sub-unit of the elastomer component, where the separating elements or the units of the separating elements have noncorresponding segments of the supply line (10, 101) which enables asymmetrical pressure distributions, and thus pre-stressing, of locally different strength to be established in the elastomer component or the sub-unit of the elastomer component.

### Claim 25 (depends on 1)

The elastomer component according to claim 1, wherein the elastomer layer (3) has one of a plurality of distinctive separating elements and a plurality of units of the distinctive separating elements (4, 105, 107, 115, 116), which are uniformly distributed in one of the elastomer component and a sub-unit of the elastomer component, where the separating elements or the units of the separating elements have at least one segment of the supply line (10, 101) which enables pressure distributions, and thus pre-stressing, of locally different strength to be established in the elastomer component.

### Claim 26 (depends on 1)

The elastomer component according to claim 1, wherein first and second layers of the at least one elastomer layer (3, 104) have at least one of different stiffness and different coefficients of expansion in the region of the at least one separating element, the at least one separating element being arranged in different arrangements to vary pre-stress in different regions of the at least one elastomer layer.

### Claim 27 (depends on 1)

The elastomer component according to claim 1, wherein the elastomer component is used as one of an elastomer bush and an elastomeric layer spring having a variably adjustable pre-stress and in wind turbines.