Patents by Inventor Hamlin Andrus Pakradooni

Hamlin Andrus Pakradooni 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).

  • Coil spring assembly
    Patent number: 4114867
    Abstract: A spring assembly embodying along the front edge a row of coil springs, each of which has end loops and intermediate the end loops a series of turns which diminish in diameter from the top to the bottom, the loop at the top being inclined to the axis of the coils and providing in conjunction with an upwardly bent portion of the border wire at the top of the assembly a supporting barrier at the front edge of the assembly such as to retain a cushion in place under conditions tending to slide the cushion forwardly.
    Type: Grant
    Filed: December 21, 1977
    Date of Patent: September 19, 1978
    Assignee: Webster Spring Co. Inc.
    Inventor: Hamlin Andrus Pakradooni