Patents by Inventor Thomas H. Lucas

Thomas H. Lucas 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).

  • Spring structure for cushion seating
    Patent number: 4886250
    Abstract: An adjustable coil seat is provided which utilizes the combination of a plurality of parallel rows of sinuous springs which are connected at opposite ends of the frame, at least one row of tapered conical coil springs in transverse relation to the sinuous springs and positioned in supporting relationship under the sinuous springs at a location between the ends of the sinuous springs, and a rigid cross-support beam structure which supports the bottom end of the tapered coiled springs. The cross support structure may be of adjustable height to vary pretension of the spring mechanism.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: December 12, 1989
    Assignee: Schweiger Industries, Inc.
    Inventor: Thomas H. Lucas