Patents by Inventor John P. Proffitt

John P. Proffitt 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: 4589513
    Abstract: The device includes an open topped housing, the bottom of which is interconnectable to a vehicle steering column through an adapter plate. A biasing plate is slideably supported in a horizontal position in the housing on a number of spaced vertical posts secured to a base plate in the housing. The biasing plate bears a number of spaced ridges extending up from the periphery thereof and defining peripheral recesses therebetween. A horizontal ring locking plate is fixed to the top of the posts above the biasing plate and bears spaced teeth defining a number of notches therebetween with the teeth partially overlying the biasing plate ridges. Coiled springs on the posts push up the locking plate. A lever secured to the biasing plate is needed to selectively move that plate down from the locking plate. A keylock in the housing extends out therefrom and releasably locks the biasing plate up against the locking plate.
    Type: Grant
    Filed: March 20, 1985
    Date of Patent: May 20, 1986
    Assignee: Whittar Industries Ltd.
    Inventor: John P. Proffitt