US12281885 - Igniter for passenger protection devices and method for producing same
The patent describes an igniter for passenger protection devices featuring a metal pin with a gold coating that enhances electrical contact. The coating has a specific thickness profile and is designed to improve the performance and reliability of the igniter in safety applications.
Claim 1
- An igniter of a passenger protection device, the igniter comprising: a round, metal pin extending along a length thereof toward a contact end, wherein the contact end is not flat; a gold coating on a section along the length and about a circumference of the metal pin, a plateau region of the gold coating having a maximum thickness between 0.20 μm and 0.80 μm, wherein the maximum thickness varies by at most 40% of the maximum thickness, wherein the plateau region has a length between 2 mm and 6 mm and is located at least 1 mm from the contact end, wherein the gold coating has a thickness that increases, in a direction from the contact end towards the plateau region, by a slope of 0.1 to 0.3 μm per mm, and wherein the plateau region is configured to be electrically contacted. a round, metal pin extending along a length thereof toward a contact end, wherein the contact end is not flat; a gold coating on a section along the length and about a circumference of the metal pin, a plateau region of the gold coating having a maximum thickness between 0.20 μm and 0.80 μm, wherein the maximum thickness varies by at most 40% of the maximum thickness, wherein the plateau region has a length between 2 mm and 6 mm and is located at least 1 mm from the contact end, wherein the gold coating has a thickness that increases, in a direction from the contact end towards the plateau region, by a slope of 0.1 to 0.3 μm per mm, and wherein the plateau region is configured to be electrically contacted.
Google Patents
https://patents.google.com/patent/US12281885
USPTO PDF
https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12281885