Jan 20, 2026

US12529547 - Preload cable, detonator cable assembly, and methods of making the same

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A preload cable comprises a cable, a first substrate, a bridge, a flyer, and a second substrate. The cable includes a pair of contacts. The first substrate includes a pair of conductors connected to the contacts. The bridge is positioned on the first substrate and is connected to the conductors. The flyer is positioned on the bridge. The second substrate is positioned adjacent to the first substrate and comprises a polyimide layer, and a hole extending through the polyimide layer and in alignment with the flyer.

The patent describes a preload cable assembly designed for use in detonators, featuring a cable with contacts, substrates with conductors, and a flyer aligned with a hole in a polyimide layer. This innovative design aims to enhance the reliability and functionality of detonator systems in firearms and ammunition applications.

Claim 1

1 . A preload cable comprising: a cable having a pair of contacts; a first substrate including a pair of conductors connected to the contacts; a bridge positioned on the first substrate and connected to the conductors; a flyer positioned on the bridge; and a second substrate positioned adjacent to the first substrate and comprising— a polyimide layer, and a hole extending through the polyimide layer and in alignment with the flyer, wherein the second substrate comprises a first surface that faces the first substrate and that includes a first fiducial formed thereon. a cable having a pair of contacts; a first substrate including a pair of conductors connected to the contacts; a bridge positioned on the first substrate and connected to the conductors; a flyer positioned on the bridge; and a second substrate positioned adjacent to the first substrate and comprising— a polyimide layer, and a hole extending through the polyimide layer and in alignment with the flyer, a polyimide layer, and a hole extending through the polyimide layer and in alignment with the flyer, wherein the second substrate comprises a first surface that faces the first substrate and that includes a first fiducial formed thereon.

Google Patents

https://patents.google.com/patent/US12529547

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12529547