Patents by Inventor Donald R. Ross, Sr.

Donald R. Ross, Sr. 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: 4550231
    Abstract: A trolley rail section includes an elongated housing wherein a conductor junction assembly is retained by virtue of its connection to an elongated conductor within the same housing and with the cooperation of the conductor of an adjacent connected trolley rail section such that the unitary conductor and junction assembly may be assembled into or disassembled from their housing according to a method of assembly when the respective trolley rail section is disconnected from other trolley rail sections.
    Type: Grant
    Filed: September 22, 1983
    Date of Patent: October 29, 1985
    Assignee: U-S Safety Trolley Corp.
    Inventor: Donald R. Ross, Sr.
  • Patent number: 4400592
    Abstract: An overhead metal trolley rail has a head for supporting it, separated by a vertical web from a foot that projects from opposite sides of the web and has flat upper contact surfaces. Slidable along the rail is a trolley shoe formed from a block of electrical conducting material, the upper portion of which has a longitudinal trough in it receiving the foot of the rail. The lower portion of the trough is spaced from the rail, but the upper portion of the trough has longitudinal flanges projecting inwardly toward each other above the foot of the rail. The flanges have flat lower contact surfaces engaging flat against the flat contact surfaces of the rail and supporting the shoe, from which a power take-off wire extends.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: August 23, 1983
    Assignee: U-S Safety Trolley Corporation
    Inventor: Donald R. Ross, Sr.
  • Patent number: 4258835
    Abstract: A trolley rail section is formed from a tubular housing that has a front side provided with laterally spaced slots extending lengthwise of the rail, and a partition wall extending across the inside of the housing and closing the inner sides of the slots, the side walls of which are provided with grooves receiving electrical conductor bars. The partition wall and the back of the housing have opposed openings therethrough, with each pair of openings communicating with a different one of the slots. Disposed in each partition wall opening and straddling the adjoining conductor bar is a U-shape metal clip with inturned free front edges overlapping the front of the bar. Disposed in the clip behind the bar is a metal plate that is pressed against the bar by set screws threaded in the back of the clip. A rigid metal conductor connection extends loosely through an opening in the back of the clip and is rigidly secured to the plate and provided with an abutment spaced rearwardly from the clip.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: March 31, 1981
    Assignee: U-S Safety Trolley Corporation
    Inventor: Donald R. Ross, Sr.