# US 8,464,776 B2 · Viscoelastic transmission device for a roller shutter actuator

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- Number: US 8,464,776 B2
- Document ID: US8464776B2
- Status: Granted
- Kind: B2
- Application number: 12/760,952
- Filed: 2010-04-15
- Published: 2010-11-04
- Granted: 2013-06-18
- Earliest claimed: 2009-04-30
- Assignees: Somfy SAS
- Applicants: Sebastien Anthoine
- Inventors: Sebastien Anthoine
- Web page: https://patentgrep.com/patent/US8464776B2

## CPC

- F16D 3/68: the elements being made of rubber or similar material
- E06B 9/72: comprising an electric motor positioned inside the roller
- F16D 1/101: {without axial retaining means rotating with the coupling}
- F16D 2001/103: {the torque is transmitted via splined connections}
- F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00)

## Abstract

Viscoelastic transmission device (100) for a mechanical connection between a shaft (4) of an actuator the axis (XX′) of which defines an axial direction, and a driving wheel (6) of a winding tube (5) of a blind, of a roller shutter or of a roll-up screen, which comprises a first component (10) that has an output profile that complements an input profile of a second component of the device, the first and the second components adhering to an intermediate component (30) made of viscoelastic material.

## Claims

### Claim 1

A home automation installation, the installation comprising an actuator having an output shaft and a driving wheel secured to a winding tube of a blind, of a roller shutter or of a roll-up screen, the output shaft being secured to the driving wheel by a transmission device comprising a viscoelastic transmission device comprising a first component that has an output profile that complements an input profile of a second component of the device, the first and the second components adhering to an intermediate component made of viscoelastic material,
wherein adhering so there is substantially no slippage between contacting surfaces of the first component and second component with the intermediate component.

### Claim 2 (depends on 1)

home installation according to claim 1, wherein the intermediate component has an axial extension of a length greater than the outside diameter of the viscoelastic transmission device.

### Claim 3 (depends on 1)

The home automation installation according to claim 1, wherein the viscoelastic material of the intermediate component has a greater amount sheared than compressed when a relative rotation is applied between the first component and the second component.

### Claim 4 (depends on 3)

The home automation installation according to claim 3, wherein the amount sheared is more than twice the amount compressed.

### Claim 5 (depends on 1)

The home automation installation according to claim 1, wherein an amount of the viscoelastic material compressed is comprised within a volume at rest that is defined by a first zone comprised between lateral faces of first radial teeth belonging to the first component and lateral faces of second radial teeth belonging to the second component.

### Claim 6 (depends on 1)

The home automation installation according to claim 1, wherein an amount of the viscoelastic material sheared is at least comprised in a volume at rest that is defined by a second zone comprised between first radial teeth belonging to the first component and a hub belonging to the second component and defined by a third zone comprised between second radial teeth belonging to the second component and a head belonging to the first component.

### Claim 7 (depends on 1)

The home automation installation according to claim 1, wherein an amount of the viscoelastic material sheared is at least comprised in either a first radial extension or in a second radial extension, or the first radial extension and the second radial extension, of the intermediate component, the shearing taking place between faces of the first component and faces of the second component which are perpendicular to an axial axis of the output shaft.

### Claim 8 (depends on 1)

The home automation installation according to claim 1, wherein the first and second components are bonded to the intermediate component.