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:
Nov. 04, 2025
Filed:
Mar. 01, 2023
Eto Magnetic Gmbh, Stockach, DE;
Matthew Peterson, Ada, MI (US);
ETO MAGNETIC GmbH, Stockach, DE;
Abstract
A variable flow check valve device includes an inlet connected with a first pressure fluid reservoir, an outlet connected with a second pressure fluid reservoir, which is separate and/or separable from the first pressure fluid reservoir, a check valve closing member that opens and closes the outlet in response to a pressure difference of the pressure fluid on opposite sides of the check valve closing member, and a spool valve with a movable spool in a flow path of the pressure fluid extending from the inlet to the outlet. The spool valve forms a variable orifice within the flow path of the pressure fluid. The variable flow check valve device includes a force balancing unit in the flow path which creates a balancing force to at least partially counteract a force acting on the spool when the pressure fluid passes the spool valve.