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:
Dec. 31, 2013
Filed:
Feb. 07, 2008
Philip Duncan Winter, Lancashire, GB;
Philip Duncan Winter, Lancashire, GB;
Torotrak (Development) Limited, Leyland, Lancashire, GB;
Abstract
A continuously variable transmission having a transmission input () and a transmission output () is described. The transmission has a variator (). This is a device which transmits drive at steplessly variable ratio. It further comprises an epicyclic gear arrangement () incorporating a clutch arrangement (). The epicyclic gear arrangement has three rotary members. One of these is coupled to a planet carrier () having at least one planet gear (). Another of the rotary members is coupled to a main gear () meshing with the planet gear. The clutching arrangement serves to couple the remaining rotary member to either of first and second alternative gears (), both of which mesh with the planet gear and which rotate at different speeds. One of the aforesaid rotary members is coupled to the transmission input at a fixed drive ratio. One of them is coupled to the variator output. The last of the rotary members is coupled to the transmission output. By way of the clutching arrangement the transmission can be changed between first and second ratio ranges.