Dual metal laminate tolerance ring for acoustic and vibration damping
US6411472B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Mar 10, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D1/0835
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc drive, includes a base, a disc stack rotatably attached to the base, and an actuator assembly movably attached to the base. The actuator assembly includes arms on one end for holding the one or more transducers and a portion of a voice coil motor on the other end of the actuator assembly. A bearing cartridge is attached to an opening in the actuator assembly. A tolerance ring is used to attach the bearing cartridge to the opening in the actuator assembly. The tolerance ring includes a dampening material therein. The tolerance ring includes a layer of viscoelastic material which can be a viscoelastic damping adhesive material. The viscoelastic material is sandwiched between the first layer of metallic material and the second layer of metallic material. The tolerance ring includes a plurality of ridges formed about the periphery of the tolerance ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.