Inductive store opening switch
US4571468A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1982 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Jul 16, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H39/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The inductive store opening switch includes a cartridge casing comprising a length of metal tubing, for disposition between a pair of electrical buss bar conductors and in contact with both so as to establish a path for electrical current therethrough. The tubular casing, having inner and outer surfaces, is scored on its outer surface to establish a rupturing point. The scoring on the outer surface may constitute many different geometric forms. A solid body of inert material is insertable within the casing and disposed adjacent the rupturing point of the casing. A propellant cartridge carrying a combustible material, such as gun powder, is disposed within the casing opposite the inserted body so as to define a cavity volume within the casing proximate the rupturing point of the casing. The cartridge further includes structure for igniting the material. The oxidation-gas products produced by ignition of the material in the propellant cartridge expand into the volume defined within the casing and cause rupturing of the casing along the scoring, thereby breaking the electrical current path established by the casing. Reinforcement members extending circumferentially of the casing on op…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.