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:
May. 25, 2021
Filed:
Jan. 10, 2020
Dayco Ip Holdings, Llc, Troy, MI (US);
Scott E. Martin, Lake Orion, MI (US);
Matthew C. Gilmer, South Lyon, MI (US);
David E. Fletcher, Davison, MI (US);
Mitchell Emond, Shelby Township, MI (US);
Chester E. Duffield, III, Warren, MI (US);
David Snow, Redford, MI (US);
Joseph Dennis, Farmington Hills, MI (US);
Dayco IP Holdings, LLC, Troy, MI (US);
Abstract
Flow control devices herein have a housing defining a plurality of parallel conduits. The first conduit has a normally closed check valve defined to open under a first preselected pressure differential controlling flow through the first conduit in a first direction of flow. The second conduit has a normally neutral check valve defined to open under a second preselected pressure differential in a second direction of flow that is opposite the first direction of flow. The third conduit defines a restriction profile, i.e., has a restrictor, having a third preselected pressure differential. The flow control devices are included as part of an engine system, more specifically a crankcase ventilation breach detection system.