Patents by Inventor Josef Koepfli

Josef Koepfli has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4069887
    Abstract: Steerable drive shafts for motor vehicles as a general rule use double-universal joints by means of which the wheels can be driven. With such type drive shafts the angle between the drive shaft and the power-takeoff shaft of a universal joint is limited, since otherwise overloading or destruction of the joint can occur. In order to obtain with the largest possible angular disposition between the drive and power-takeoff shafts a large deflection or turning of the wheels, the drive shaft or axle, according to the invention, comprises two parts which can be connected by means of a single-universal joint. The single-universal joint is disposed at the longitudinal center line of the vehicle, at a certain spacing in front of the connection line and between both double-universal joints.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: January 24, 1978
    Assignee: Inventio AG
    Inventor: Josef Koepfli