Patents by Inventor Joseph W. Lam

Joseph W. Lam 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: 4901649
    Abstract: A span bolster, for carrying a heavy load of a railroad car body and distributing the load to two four wheel two axle railroad bogies or trucks, is fabricated from steel plate and has top and bottom cover plates, top and bottom reinforcement doubler plates, longitudinal spaced apart webs separating the cover plates, body bolsters at each end and a central truck bolster, all formed of metal plate joined together by welding with all critical welds being full penetration welds, and with the span bolster being stress relieved after fabrication.
    Type: Grant
    Filed: December 1, 1988
    Date of Patent: February 20, 1990
    Assignee: Thrall Car Manufacturing Company
    Inventors: Eugene T. Fehrenbach, Joseph W. Lam
  • Patent number: 4784067
    Abstract: A freight carrying railroad car including a body supported at each end by wheel-containing trucks; the body having a vertical center beam extending the length of the car between bulkheads at each end of the car; the center beam having a center sill, a top sill parallel to and spaced above the center sill, and a plurality of vertical spaced apart columns connected at their lower ends to the center sill and at their upper ends to the top sill; a vertical plate at each end of the car extending from the center sill to the top sill, and from the respective bulkhead at that end inwardly along the center sill; each vertical plate being joined to the center sill, top sill, bulkhead and a plurality of said columns such that opposed facing ends of said vertical plates are spaced from each other a distance of at least about 60% of the length of said car between the bulkheads; and between the facing end of each of the vertical plates and the car length center, at least one bracing bar extending diagonally downwardly, tow
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: November 15, 1988
    Assignee: Thrall Car Manufacturing Company
    Inventors: William H. Harris, James P. Klag, Joseph W. Lam
  • Patent number: 4753175
    Abstract: A freight carrying railroad car including a body supported at each end by wheel-containing trucks; the body having a vertical center beam extending the length of the car between bulkheads at each end of the car; the center beam having a center sill, a top sill parallel to and spaced above the center sill, and a plurality of vertical spaced apart columns connected at their lower ends to the center sill and at their upper ends to the top sill; a vertical plate at each end of the car extending from the center sill to the top sill, and from the respective bulkhead at that end inwardly along the center sill, each vertical plate being joined to the center sill, top sill, bulkhead and a plurality of said columns such that opposed facing ends of said vertical plates are spaced from each other a distance of at least about 60% of the length of said car between the bulkheads; and between the facing end of each of the vertical plates and the car length center, at least one bracing bar extending diagonally downwardly, tow
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: June 28, 1988
    Assignee: Thrall Car Manufacturing Company
    Inventors: William H. Harris, James P. Klag, Joseph W. Lam
  • Patent number: 4681041
    Abstract: A freight carrying railroad car including a body supported at each end by wheel-containing trucks; the body having a vertical center beam extending the length of the car between bulkheads at each end of the car; the center beam having a center sill, a top sill parallel to and spaced above the center sill, and a plurality of vertical spaced apart columns connected at their lower ends to the center sill and at their upper ends to the top sill; a vertical plate at each end of the car extending from the center sill to the top sill, and from the respective bulkhead at that end inwardly along the center sill; each vertical plate being joined to the center sill, top sill, bulkhead and a plurality of said columns such that opposed facing ends of said vertical plates are spaced from each other a distance of at least about 60% of the length of said car between the bulkheads; and between the facing end of each of the vertical plates and the car length center, at least one bracing bar extending diagonally downwardly, tow
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: July 21, 1987
    Assignee: Thrall Car Manufacturing Company
    Inventors: William H. Harris, James P. Klag, Joseph W. Lam