US 12,288,978 B2
Electromechanical mechanism for a spark-free electrical connection in an elevated oxygen environment
Russell James Kuzelka, McFarland, WI (US); Donald L. Beduhn, Madison, WI (US); and Chetankumar Amrutlal Modi, Bangalore (IN)
Assigned to GE Precision Healthcare LLC, Wauwatosa, WI (US)
Filed by GE Precision Healthcare LLC, Wauwatosa, WI (US)
Filed on Dec. 19, 2022, as Appl. No. 18/068,053.
Prior Publication US 2024/0204509 A1, Jun. 20, 2024
Int. Cl. H02H 3/08 (2006.01); H02H 7/22 (2006.01); H02H 9/02 (2006.01); H03K 5/24 (2006.01)
CPC H02H 7/22 (2013.01) [H03K 5/24 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a first plurality of electro-mechanical connectors disposed on a first electrical system, the first plurality of electro-mechanical connectors including at least a first-system ground connector, a first-system output power connector, and at least one first-system signal connector, wherein the first-system output power connector is a pogo pin;
a power supply line connected through a first current-limiting resistor to the first-system output power connector;
a circuit detecting a loopback signal received from a second electrical system via the at least one signal connector indicating presence of a power connection between the first electrical system and the second electrical system, the second electrical system including a second plurality of electro-mechanical connectors for connecting to respective ones of the first plurality of electro-mechanical connectors disposed on the first electrical system; and
a switch activable in response to a detected loopback signal to bypass the current-limiting resistor and to pass a full unrestrained current and voltage on the power supply line to the first-system output power connector,
wherein the second plurality of electro-mechanical connectors includes at least a second-system input power connector, the second-system input power connector including a first barrel receptacle aligned with and electrically connected to a second barrel receptacle by a second current-limiting resistor, and wherein the pogo pin initially carrying a current-limited safety extra low voltage signal (SELV) is configured to couple to the second-system input power connector by first passing through the first barrel receptacle and then into the second barrel in sequence, the second current-limiting resistor being configured to limit an inrush current.