Damper Apparatus

1 . A damper apparatus comprising a housing, an inner member and a damper material interposed therebetween, the damper material being bonded to both the housing and inner member, whereby at least one or other of the housing and inner member are able to rotate or be rotated respectively in a substantially concentric manner, the inner member provided in a form or configuration presenting a limited torque angle to the damper material.

2 . Apparatus according to claim 1 , wherein the damper material tapers in lateral thickness from the inner member toward the housing.

3 . Apparatus according to claim 1 or 2 , wherein the housing is provided with a circular inner face to which the damper material is bonded.

4 . Apparatus according to any one of claims 1 to 3 , wherein the inner member is formed with two or more lobes projecting from a centre thereof, the lobes being rounded in general form so as to substantially minimise torque angle and shearing forces when the inner member is rotated relative to the housing.

5 . Apparatus according to any one of claims 1 to 4 , wherein the housing and inner member each have structures affixed thereto, whereby relative movement therebetween may be dampened or absorbed.

6 . A conveyance having provided therein or thereon a suspension arrangement, the suspension arrangement comprising at least in part one or more torsion damper apparatus according to any one of claims 1 to 6 .

7 . A torsion damper apparatus comprising a housing, an inner member and a damper material interposed therebetween, the damper material being bonded to both the housing and inner member, whereby at least one or other of the housing and inner member are able to rotate or be rotated respectively in a substantially concentric manner.

8 . Apparatus according to claim 7 , wherein the inner member is provided in a form of limited torque angle configuration.

9 . Apparatus according to claim 7 or 8 , wherein the damper material tapers in lateral thickness from the inner member toward the housing.

10 . Apparatus according to any one of claims 7 to 9 , wherein the housing is provided with a circular inner face to which the damper material is bonded.

11 . Apparatus according to any one of claims 7 to 10 , wherein the inner member is formed with two or more lobes projecting from a centre thereof, the lobes being rounded in general form so as to substantially minimise torque angle and shearing forces when the inner member is rotated relative to the housing.

12 . Apparatus according to any one of claims 7 to 11 , wherein the housing and inner member each have structures affixed thereto, whereby relative movement there between may be damped or absorbed.

13 . A damper apparatus comprising a first and second material, interposed between which, at least in part, is provided a damper material, the first and second materials being bonded at respective interfaces to the damper material whereby relative movement therebetween is damped, the interface of at least one of the materials with the damper material provided in a form or configuration presenting a limited torque angle to the damper material.

14 . Apparatus according to claim 13 , wherein one or both of the first and second materials have a plurality of lobes provided thereon at the interface with the damper material, the lobes being rounded in general form so as to substantially minimise torque angle and shearing forces when one material is moved relative to the other.

15 . A torsion damper apparatus substantially as hereinbefore described with reference to the accompanying drawings.