Patents by Inventor Harold Ruckman

Harold Ruckman 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-standing floor sign
    Patent number: 4253260
    Abstract: A self-standing floor sign comprising two panels (15 and 16) hinged together at their upper ends, one panel (16) having a tubular hinge portion (24) provided with a slot (27) (28), the other panel having a core (31) (32) rotatable in said hinge portion (24), said core having a laterally directed U-shaped notch (31') (32') adapted to allow said core to hook into and pass laterally through said slot (27) (28) into said hinge portion (24) by simultaneously rotating and pressing radially inward on said core (31) (32) to snap it past the upper edge of said slot (27) (28).
    Type: Grant
    Filed: October 18, 1979
    Date of Patent: March 3, 1981
    Assignee: Rubbermaid Commercial Products Inc.
    Inventors: Dale T. Maza, Glen E. Tomblin, Harold Ruckman
  • Self-standing floor sign
    Patent number: D260780
    Type: Grant
    Filed: October 18, 1979
    Date of Patent: September 15, 1981
    Assignee: Rubbermaid Commercial Products Inc.
    Inventors: Dale T. Maza, Glen E. Tomblin, Harold Ruckman
  • Mobile maintenance cart
    Patent number: D273242
    Type: Grant
    Filed: November 9, 1981
    Date of Patent: March 27, 1984
    Assignee: Rubbermaid Commercial Products Inc.
    Inventors: Dale T. Maza, Harold Ruckman, Glen E. Tomblin