Capacitor
US9496096B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2012 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Jul 20, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present application provides a capacitor in which the operability of the pressure valve, and valve deformation during operation, can be stabilized. A capacitor (1) comprising: a capacitor element (6) obtained by overlapping and winding a positive electrode foil (8) and a negative electrode foil (7) with an electrolytic paper (9) interposed therebetween, and impregnating the foils with an electrolytic solution; a bottomed cylindrical outer case (4) for housing the capacitor element (6); and a sealing body (2) for sealing the opening of the outer case (4). The inner bottom part of the outer case (4) has formed thereon a recess (21) having: a first inclined surface (22) spreading in a radial manner from the center region of the inner bottom part, the center region being the deepest part; and a second inclined surface (23) which is continuous from the outer edge of the first inclined surface (22) and which is steeper than the first inclined surface (22). A weakened section is formed in the recess, and a groove is formed on the outside of the inner bottom part of the outer case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.