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:
Aug. 07, 2007
Filed:
Jun. 02, 2004
Hirofumi Miyata, Hyogo, JP;
Hirofumi Miyata, Hyogo, JP;
Bando Chemical Industries, Ltd., Kobe-shi, JP;
Abstract
In a belt drive systemfor transmitting torque at a crankshaftof an automotive engineto a supercharger (engine accessory), an output pulley unitformed of a first flat pulleyand a second flat pulleyis coupled to the rotational shaftof the supercharger. A flat beltentrained between the output pulley unitand the crank pulleyof the crankshaftis shifted from the first flat pulleyto the second flat pulleyor vice versa by a speed ratio selector. The rotational shaftcan thereby be driven into rotation with the switching between a high speed ratio during acceleration and a low speed ratio during constant speed cruise. As a result, the superchargercan bring out its capability into full play without using parts involving increases in weight, cost and power consumption, such as a solenoid-operated clutch, and concurrently suppress the deterioration of fuel economy.