Leak-tight and rupture proof, ultrasonically-welded, polymer-encased electrical capacitor with pressure sensitive circuit interrupter
US5381301A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 11, 1993 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | May 11, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/435
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A polymer-encased capacitor with a pressure sensitive interruption (PSI) system includes a polymer cover attached to a polymer case, the polymer cover having a skirt-less outer portion ultrasonically sealed to an open end portion of the polymer case. The polymer cover does not include flanged or lipped members extending from the outer edge of the cover (i e., "skirt-less") so that application of ultrasonic energy to the cover does not excite modes of vibration in which vibration nodes occur at intervals around the periphery of the cover, thereby providing a more leak-tight and rupture-proof bond between the capacitor case and cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.