Patents by Inventor Larry L. Foster

Larry L. Foster 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).

  • Twin tower air dryer
    Patent number: 5961698
    Abstract: A twin tower gas drying system for cleaning and drying a stream of unpurified pressurized gas received from a source thereof for use of a pneumatic system. The drying system includes a manifold block provided with the plurality of ports. A separator and sump is connected to such block and to one of the ports for initially separating moisture and particulates from such stream of unpurified gas, and for directing the remainder of the stream to the one port in the block. A pair of desiccant containing canisters are threadably mounted on a surface of the block opposite that of the separator and sump by two respective threaded shuttle valves. The canisters and shuttle valves are, in addition, connected in fluid communication with certain of the ports provided in the block for supplying and removing pressurized air from the canisters. A port is provided for discharging dry clean air from the block. Other ports provided in the block exhaust purged air to the atmosphere.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: October 5, 1999
    Assignee: Westinghouse Air Brake Company
    Inventors: Murtaza R. Dossaji, Larry L. Foster, Conley L. McGee, Charlie E. Jones, Glenn A. Thomas, Michael V. Kazakis
  • Method of cutting metal stud and bending and securing same to form angel member
    Patent number: 4875274
    Abstract: A die body is provided defining a longitudinal channel therethrough including the cross-sectional shape of a metal stud to be cut and an opening is formed through the die body extending normal to the web of the channel and including a first arm portion extending along one longitudinal margin of the channel and a second arm portion extending from the first arm portion to a point spaced slightly inward of the other longitudinal margin of the channel, the first arm portion of the opening including opposite side portions thereof disposed inward and outward of the one longitudinal margin of the channel.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: October 24, 1989
    Inventor: Larry L. Foster
  • Metal stud and channel cornering die
    Patent number: 4787283
    Abstract: A die body is provided defining a longitudinal channel therethrough including the cross-sectional shape of a metal stud to be cut and an opening is formed through the die body extending normal to the web of the channel and including a first arm portion extending along one longitudinal margin of the channel and a second arm portion extending from the first arm portion to a point spaced slightly inward of the other longitudinal margin of the channel, the first arm portion of the opening including opposite side portions thereof disposed inward and outward of the one longitudinal margin of the channel.
    Type: Grant
    Filed: March 26, 1987
    Date of Patent: November 29, 1988
    Inventor: Larry L. Foster