Method of fabricating hermetic terminal and hermetic terminal, method of fabricating piezoelectric oscillator and piezoelectric oscillator, oscillator, electronic appliance, and radio clock
US7804373B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2008 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Apr 29, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49181
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of fabricating a hermetic terminal includes: joining and firing wherein a bar-shaped member to be a lead is inserted into a ring, and they are fired to form a hermetic terminal intermediate having the bar-shaped member fixed in the ring; flattening wherein an end part of the bar-shaped member to be the inner lead portion of the lead is flattened to form a stair portion; and shaping wherein an end part of the stair portion is cut to shape the stair portion into a predetermined shape, wherein in the joining and firing step, a solid round bar longer than the lead is used as the bar-shaped member, and one end side of the bar-shaped member to be the inner lead portion is inserted into the ring so that the one end side is longer than the inner lead portion in the hermetic terminal as a completed product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.