US 12,239,868 B2
Ultra-high temperature fusible link
Michael J. VerBrugge, Belgium, WI (US); Manuel R. Silva, Jr., Cranston, RI (US); and Brian J. Kramer, Lubbock, TX (US)
Assigned to Tyco Fire Products LP, Cranston, RI (US)
Filed by Tyco Fire Products LP, Lansdale, PA (US)
Filed on Jan. 5, 2023, as Appl. No. 18/150,612.
Application 18/150,612 is a continuation of application No. 17/038,569, filed on Sep. 30, 2020, granted, now 11,602,654.
Claims priority of provisional application 62/908,880, filed on Oct. 1, 2019.
Prior Publication US 2023/0149757 A1, May 18, 2023
Int. Cl. A62C 37/12 (2006.01)
CPC A62C 37/12 (2013.01) 14 Claims
OG exemplary drawing
 
1. A fusible link, comprising:
a first substrate extending along an axis from a first end to a second end, the first substrate comprising a first surface, a first aperture between the first end and the second end, and a first protrusion between the first aperture and the second end;
a first plating on the first surface at the second end;
a second substrate extending from a third end to a fourth end, the second substrate comprising a second surface, a second aperture between the third end and the fourth end, and a second protrusion between the second aperture and the third end, the first protrusion sized to be received in the second aperture, the second protrusion sized to be received in the first aperture;
a second plating on the second surface at the fourth end, the first plating and the second plating made of at least one of a nickel alloy, a gold alloy, and a silver alloy, the first plating facing the second surface, the second plating facing the first surface;
a solder layer directly bonded to the first plating of the first substrate and to the second plating of the second substrate, the solder layer to prevent separation of the first substrate and the second substrate until the solder layer reaches a temperature greater than or equal to 500 degrees Fahrenheit and less than or equal to 575 degrees Fahrenheit, the solder layer spaced from the first aperture and from the second aperture;
a coating on the solder layer, the coating comprising a silicone-based paint that withstands the temperature greater than or equal to 500 degrees Fahrenheit and less than or equal to 575 degrees Fahrenheit; and
a bracket comprising a first opening outward from the first end relative to the second end and encircling the axis, and comprising a second opening outward from the second end relative to the first end and encircling the axis.