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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.:

US 9136741 B1

PDFFull Text
Date of Patent:
Sep. 15, 2015

Filed:

Jul. 02, 2014

Method for producing a kinetic energy storage system

Applicant:

Quantum Energy Storage Corporation, Poway, CA (US);

Inventor:

Cheruvari Karthik Hari Dharan, Berkeley, CA (US);

Assignee:

QUANTUM ENERGY STORAGE CORPORATION, Poway, CA (US);

Attorney:

Foley & Lardner LLP

Primary Examiner:

Dang Le

Int. Cl.
CPC ...
H02K 7/09 (2006.01); H02K 7/02 (2006.01); B21J 1/06 (2006.01); B21K 1/28 (2006.01); C21D 8/00 (2006.01); C21D 9/00 (2006.01); H02K 15/02 (2006.01); H02K 5/24 (2006.01); H02K 7/00 (2006.01); H02K 7/08 (2006.01); H02K 11/00 (2006.01); B21K 1/32 (2006.01); H02K 16/00 (2006.01);
U.S. Cl.
CPC ...
H02K 7/09 (2013.01); B21J 1/06 (2013.01); B21K 1/28 (2013.01); B21K 1/32 (2013.01); C21D 8/00 (2013.01); C21D 9/00 (2013.01); H02K 5/24 (2013.01); H02K 7/003 (2013.01); H02K 7/025 (2013.01); H02K 7/08 (2013.01); H02K 11/001 (2013.01); H02K 11/0021 (2013.01); H02K 15/02 (2013.01); H02K 16/00 (2013.01); Y10T 29/49012 (2015.01); Y10T 74/2119 (2015.01);
Abstract

A flywheel energy storage system incorporates various embodiments in design and processing to achieve a very high ratio of energy stored per unit cost. The system uses a high-strength steel rotor rotating in a vacuum envelope. The rotor has a geometry that ensures high yield strength throughout its cross-section using various low-cost quenched and tempered alloy steels. Low-cost is also achieved by forging the rotor in a single piece with integral shafts. A high energy density is achieved with adequate safety margins through a pre-conditioning treatment. The bearing and suspension system utilizes an electromagnet that off-loads the rotor allowing for the use of low-cost, conventional rolling contact bearings over an operating lifetime of several years.

Find Patent Forward Citations

Dharan, Cheruvari Karthik Hari. (2015). Method for producing a kinetic energy storage system (U.S. Patent No. 9136741). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9136741

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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