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:
Jan. 13, 1987
Filed:
Sep. 13, 1984
George Scourtes, Plymouth, MI (US);
The Allen Group Inc., Saginaw, MI (US);
Abstract
A chassis dynamometer has a number of rotary units corresponding to the number of wheels of a vehicle to be tested, each of the rotary units constituting a synchronous electric motor independent of one another. Each motor is coupled to an electric power source via a single frequency control unit which is operable to adjust the frequency of electric current supplied to the motors. All motors operate at a uniform speed and each motor is coupled to a torque responsive load cell operable to generate a signal in response to a change in torque of the associated motor. Each load cell is coupled to a summing circuit unit which also is coupled to the frequency control unit for adjusting the latter in accordance with an average of changes in the torque.