Crystal used for closing the top of the case of a portable object and method of welding a crystal of this type
US9149983B2 · kind B2 · utility
0Cited by
13References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2011 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Aug 31, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/0306
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A crystal and an ultrasonic welding method for a crystal. The crystal is used to close a top of a case of a portable object, the crystal being made of a transparent plastic material and being secured to the case of the portable object by ultrasonic welding. The crystal includes a top surface and a bottom surface that carry one or more conductive paths made of a transparent conductive material, and a peripheral rim that extends along at least one portion of the perimeter of the crystal. The peripheral rim provides at least one surface for the ultrasonic welding of the crystal to the case of the portable object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.