Patents by Inventor Roy Olsen

Roy Olsen 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).

  • Floatable ladder device
    Patent number: 5152245
    Abstract: A floatable device having a ridged body containing a plurality of tie points near the edge and a substantially central orifice. Several bodies may be tied in series to form a ladder for ingress and egress of boats. The body may be filled with closed cell foam to sustain buoyancy if the ridged body is pierced or cracked. The body may be tinted a bright, safety color. The ties securing the blocks together may be whipped with a clamp having a tapered end to prevent the knots from slipping.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: October 6, 1992
    Inventor: Roy Olsen
  • Sequence reversing border light display
    Patent number: 4001810
    Abstract: A series of flashing lights arranged in a line or circle appear as a group to move or rotate by properly timing the OFF or periods of the lights. The lights are divided into three interpositioned groups for separate control. The groups progressively go dark in one sequence and then in the reverse sequence by the aid of a simple cam clock means that periodically switches the cadence of only one of the groups to cause it alternately closely to lead or follow one of the other groups. No mechanical reversals of clock means occurs.
    Type: Grant
    Filed: December 18, 1975
    Date of Patent: January 4, 1977
    Assignee: Superior Outdoor Display, Inc.
    Inventor: Roy Olsen