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:
Apr. 01, 2025
Filed:
Apr. 28, 2023
Eaton Intelligent Power Limited, Dublin, IE;
Jayaraman Muniyappan, Pernambut, IN;
Santhosh Kumar Chamarajanagar Govinda Nayaka, Moon Township, PA (US);
Robert Michael Slepian, Murrysville, PA (US);
EATON INTELLIGENT POWER LIMITED, Dublin, IE;
Abstract
A hydraulic multi-pole actuation system opens all poles of a circuit interrupter simultaneously. The system utilizes Thomson coil arrangements with a wide piston attached to the conductive member of each arrangement. A narrow piston is attached to the movable conductor of each pole assembly in the circuit interrupter. The wide and narrow pistons are contained within a hydraulic tank. Activating the Thomson coils causes the wide pistons to displace the hydraulic fluid, and the displaced fluid pushes against the narrow pistons to cause the movable conductors to open the line connections in their respective pole assemblies. The wide pistons have a greater collective surface area that interfaces with the hydraulic fluid than the narrow pistons do, enabling fewer Thomson coils arrangements to be used than there are poles in the circuit interrupter, and enabling movement of the wide pistons to be amplified during translation into movement of the narrow pistons.