Patents by Inventor Bruce E. S. MacDonald

Bruce E. S. MacDonald 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: 5033216
    Abstract: A frame member for a sign assembly for use with flexible signs comprises an elongated body having an outer side having a front edge which defines a lip for engaging a back side of an edge portion of the sign and applying a tensile force to the sign. The channel extends longitudinally of the body and inwardly of the outer side thereof and opens in the outer side for receiving in edgewise fashion an elongated tensioning bar having an edge portion of the sign folded thereover and secured thereto by a plurality of spring clips. The channel is formed with a plurality of transversely spaced, inwardly facing shoulders which are engageable with the spring clips for securing the edge portion of the sign within the channel and enabling the sign to be tensioned by urging the tensioning bar inwardly of the channel to enable the material clamping means to successively engage successive shoulders.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: July 23, 1991
    Assignee: Signtech Inc.
    Inventors: James Gandy, Bruce E. S. MacDonald
  • Patent number: 4937961
    Abstract: A sign assembly has a frame surrounding an aperture, and a sheet of flexible sign material has a main portion stretched across the aperture and an end portion secured to the frame. The frame has a lip member defining the aperture, the lip member having a free end over which the flexible sign sheet passes, the frame also having a U-shaped channel portion rearwardly of the lip member and receiving an end portion of the sign sheet. A mounting bar extends longitudinally within the U-shaped channel, and the sheet end portion is wrapped, around the mounting bar. A series of spaced U-shaped resilient clips retain the mounting bar and wrapped around sheet end portion therein. The U-shaped channel has at least one wall with a plurality of longitudinally-extending shoulders which face in a rearward direction from the lip member.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: July 3, 1990
    Assignee: Signtech, Inc.
    Inventors: James Gandy, Bruce E. S. MacDonald