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. 12, 1989
Filed:
Mar. 27, 1989
Charles E Kraus, Austin, TX (US);
Excelermatic Inc., Austin, TX (US);
Abstract
A multimode infinitely variable traction roller transmission including a toroidal traction roller transmission for infinitely varying the transmission ratio in each of the modes. Power is transmitted from an input shaft to the planet carrier of a planetary transmission whose ring is associated with the output shaft of the transmission and through the toroidal traction roller transmission to the sun of the planetary transmission selectively by way of a chain gear or spur gear transmission provided with clutches for selective engagement thereof, that is, for rotation of the sun in one or the opposite direction. A brake structure is provided for locking the planet carrier in one of the transmission modes. Output shaft speed is increased by increasing output speed of the infinitely variable transmission in the first mode (direct mode), it is further increased by subsequently decreasing the output speed of the infinitely variable transmission in the second mode (inverse regeneration mode) and it is then further increased by again increasing the output speed of the infinitely variable transmission in the third mode (split torque mode). The changeover is smooth thereby providing for a wide ratio range infinitely variable transmission.