Method for making a lightweight internal combustion engine piston with micro chambers

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12215652
SERIAL NO

18445812

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An automotive internal combustion engine piston is formed to have a bowl in the piston crown, at least one micro chamber formed in a side surface of the piston body at a position lower than a floor of the bowl, and extended orifices to provide 2-way communication of gaseous materials between the micro chambers and bowl. The micro chamber volume is defined by a removable casting core that incorporates a strut to secure the core at the circumference of the piston body in the casting mold. Subsequent to casting and removal of the core material, the cavity from the strut to secure the core is prepared to receive a tapered thread plug that is sealed by circumferential friction stir welding on the outer diameter of the piston body. The micro chamber is thereby isolated except for the extended orifice to the bowl.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • LEAN-BURN COMBUSTION, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bandy, William R Gambrills, US 88 3795
Keller, Michael I Alexandria, US 3 12
Keller, Michael Ira Alexandria, US 2 8
Meyer, Andrew E Harpers Ferry, US 9 74
Reed, Sidney Lynn Lynchburg, US 1 0

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Aug 4, 2028
7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 4, 2032
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 4, 2036
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00