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. 16, 2013
Filed:
Jun. 27, 2007
Gregg A. Nader, Libertyville, IL (US);
Gregg A. Nader, Libertyville, IL (US);
Sonnax Industries, Inc., Bellows Falls, VT (US);
Abstract
An internal bypass filtration circuit including a microfine depth filtration cartridge, which operates in combination with the sump filter of an automatic transmission is disclosed. The present depth filtration cartridge functions to remove particulate matter as small as five microns to improve fluid cleanliness level without restricting fluid flow to the pump ensuring its volumetric efficiency. In one embodiment transmission fluid passes through a calibrated orifice in the bypass circuit to regulate flow to the depth filtration cartridge. In an alternate embodiment the depth filter media itself regulates filtration below a predetermined fluid pressure. The internal bypass circuit is installed by accessing a pressurized fluid circuit in the transmission valve body. A hydraulic bypass line interconnects such pressurized fluid circuit with the depth filtration cartridge, which is mounted internally of the transmission housing. The outlet of the depth filtration cartridge exhausts directly into the sump bypassing all other functional circuits.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile