Multiple payload cartridge employing single pair of electrical connections
US4135455A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 1977 |
| Grant date | Jan 23, 1979 |
| Priority date | — |
| Expiry date | Feb 3, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42C11/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A multiple payload cartridge employing circuit components in the squib portion thereof to allow for separate or sequential firing thereof, and hence separate payload ejection, through two-wire connections. Various techniques include the use of a repositionable switch to provide sequential ground connections; the use of mechanical interrupters, e.g., spring-type, crushable-element-type or domed-pop-action type; the use of resistive voltage dividers to permit discrimination in squib firing via applied voltage amplitudes; the use of diodes to permit discrimination in squib firing via applied voltage polarities; and combinations of the above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.