Abstract: A heat spreading and insulating material using densified foam is provided that has a heat spreading layer that is adhered to an insulating layer. The material is designed to be used with mobile devices that generate heat adjacent to heat sensitive components. The insulating layer is formed from a compressed layer of polyimide foam to increase its density. The polyimide foam retains a significant amount of insulating properties through the densification process. In some embodiments, an EMI shielding layer is added to improve electrical properties of the device. The heat spreading layer may be a graphite material with heat conducting properties that preferentially conduct heat in-plane but can also be metal foil or other isotropic heat conducting material. The material may also include pressure sensitive layers to permanently apply the material to the mobile device.

Abstract: A heat spreading and insulating material using densified foam is provided that has a heat spreading layer that is adhered to an insulating layer. The material is designed to be used with mobile devices that generate heat adjacent to heat sensitive components. The insulating layer is formed from a compressed layer of polyimide foam to increase its density. The polyimide foam retains a significant amount of insulating properties through the densification process. In some embodiments, an EMI shielding layer is added to improve electrical properties of the device. The heat spreading layer may be a graphite material with heat conducting properties that preferentially conduct heat in-plane but can also be metal foil or other isotropic heat conducting material. The material may also include pressure sensitive layers to permanently apply the material to the mobile device.

Abstract: A heat spreading and insulating material using densified foam is provided that has a heat spreading layer that is adhered to an insulating layer. The material is designed to be used with mobile devices that generate heat adjacent to heat sensitive components. The insulating layer is formed from a compressed layer of polyimide foam to increase its density. The polyimide foam retains a significant amount of insulating properties through the densification process. In some embodiments, an EMI shielding layer is added to improve electrical properties of the device. The heat spreading layer is commonly a graphite material with anisotropic heat properties that preferentially conduct heat in-plane. The material may also include pressure sensitive layers to permanently apply the material to the mobile device.

Abstract: A heat spreading and insulating material using densified foam is provided that has a heat spreading layer that is adhered to an insulating layer. The material is designed to be used with mobile devices that generate heat adjacent to heat sensitive components. The insulating layer is formed from a compressed layer of polyimide foam to increase its density. The polyimide foam retains a significant amount of insulating properties through the densification process. In some embodiments, an EMI shielding layer is added to improve electrical properties of the device. The heat spreading layer is commonly a graphite material with anisotropic heat properties that preferentially conduct heat in-plane. The material may also include pressure sensitive layers to permanently apply the material to the mobile device.

Abstract: A hammer has an impact head, a handle and an elastomeric grip cover. The free end of the grip cover includes a tuned vibration absorber. In one design, the tuned vibration absorber is integral with the grip cover and may or may not include a higher density mass portion. In other designs, a mass is located within a pocket formed in the grip cover. The pocket may be open or closed.

Abstract: An acoustic enclosure for reducing noise of a hard disk drive with a forced air cooling system is disclosed. The enclosure consists of box-shaped structure encapsulating the hard disk drive, including a top and/or base cover having an inlet and outlet opening in the enclosure to allow for directed air flow across the drive. The hard disk drive is mounted within the enclosure through vibration isolation mounts. The fan component can either be incorporated within the enclosure or attached externally through vibration isolators, providing a forced air cooling for the hard disk drive. The enclosure can be injection molded of suitable thermoplastics and elastomers. The enclosure can also be formed of sheet metal and laminates. The enclosure is preferably used to reduce the noise emission from the hard disk drive in a computer, television set-top box, digital video recorders and other consumer electronic product applications.

Abstract: A golf club having a vibration damping device including a club head, a shaft connected to the club head having resonant frequencies over a predetermined range and a rod disposed within the shaft with a viscoelastic material interposed between the shaft and the rod. The rod is flexible and has resonant frequencies over the same frequency range as the shaft such that the shaft and rod vibrate out of phase with respect to each other and thereby deform the viscoelastic material to damp vibrations in the shaft.