The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2026
Filed:
Mar. 29, 2024
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Rajkumar Sengodan, Namakkal, IN;
Thilak Raj Durairaj, Shirley, GB;
HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US);
Abstract
A solenoid drive circuit includes a power source, a first solenoid control circuit connected to the power source, the first solenoid control circuit including a first solenoid coil and a first solenoid control switch that controls a flow current through the first solenoid coil and a first regenerative drive circuit connected to the first solenoid control circuit and that includes a first regenerative capacitor. The first regenerative drive circuit can include a first diode bridge formed of four diodes (D, D, Dand D) and that has a positive input, a negative input, a positive output and a negative output, wherein the first regenerative capacitor is connected between the positive and negative inputs.