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:
Mar. 04, 2003
Filed:
Jun. 20, 2001
Seppo Lauri Paalasmaa, Kauniainen, FI;
Pekka Juhani Hautala, Espoo, FI;
Petri Erkki Michael Makkonen, Helsinki, FI;
Prorauta, Espoo, FI;
Abstract
A planetary gear transmission with a steplessly adjustable transmission ratio where the gear transmission comprises a first and second sun gear ( ) arranged on a first and second operating shaft ( ), and first ( ) and second planetary gears ( ) connectable thereto, each of which sun gears is rigidly attached by a shaft ( ) to the first planetary gears ( ), so that the first and second planetary gears form planetary gear pairs (B ). The gear transmission includes only one planetary carrier ( ). By means of coupling means ( ), the whole rotary force or part thereof is taken out of the planetary gear and/or fed therein, either via said first or second operating shaft ( ), or via an alternative planetary carrier. By using at least one operation means ( ), the planetary carrier rotation velocity (&phgr;) is controlled to remain locked stationary or to be freely rotatable.