Patents by Inventor Earl W. Ekdahl

Earl W. Ekdahl 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).

  • Self-calibrating variable camshaft timing system
    Patent number: 5289805
    Abstract: A camshaft (26) has a vane (60) secured to an end thereof for non-oscillag rotation therewith. The camshaft also carries a sprocket (32) which can rotate with the camshaft (26) but which is also oscillatable with the camshaft (26). The vane (60) has opposed lobes (60a, 60b) which are received in opposed recesses (32a, 32b), respectively, of the sprocket (32). The recesses have greater circumferential extent than the lobes (60a, 60b) to permit the vane (60) and sprocket (32) to oscillate with respect to one another, and thereby permit the camshaft (26) to change in phase relative to a crankshaft whose phase relative to the sprocket (32) is fixed by virtue of a chain drive (38) extending therebetween.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: March 1, 1994
    Assignee: Borg-Warner Automotive Transmission & Engine Components Corporation
    Inventors: Stanley B. Quinn, Jr., Earl W. Ekdahl