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:
Jun. 06, 2000
Filed:
May. 18, 1999
Applicant:
Inventor:
Erkki Koivunen, Northville, MI (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
475275 ; 475276 ; 475281 ; 475282 ; 475288 ;
Abstract
An automatic transmission for motor vehicles comprising three interconnected planetary gear units, two rotating friction clutches and four friction brakes providing six optimized forward gear ratios and a reverse ratio, all assembled into a compact package no larger than the current four-speed automatic transmissions. This invention preferably utilizes two multi-plate rotating clutches and special friction force balanced brake bands that allows self-synchronized ratio shifts without creating any side loading of associated band drums.
Koivunen, Erkki. (2000). Compact multi-ratio automatic transmission (U.S. Patent No. 6071208). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6071208
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile