Patents by Inventor James E. Hart

James E. Hart 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: 4125293
    Abstract: An upgraded railway freight car brake control valve device comprises a novel emergency valve portion that embodies therein a minimum number of simple and inexpensive poppet valves, one of which is a double seated valve, that replaces yet performs the same functions heretofore performed by more expensive slide type valves which slide valves, and the flat seats upon which they slide as they are shifted from one position to another, in their manufacture require a considerable amount of accurate machining thus increasing the cost of the valve device of which they are an important part.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: November 14, 1978
    Assignee: Westinghouse Air Brake Company
    Inventor: James E. Hart
  • Patent number: 4106819
    Abstract: An inexpensive emergency valve device embodies a cycling-type continual quick service valve operative by an abutment, subject on its respective opposite sides to the pressure in a train brake pipe and in a quick action chamber, in response to a service rate of reduction of the pressure of the fluid in a train brake pipe to repeatedly vent and supply fluid under pressure from and to a quick service volume disposed on one side of a diaphragm-type valve that is operatively responsive to the venting of fluid under pressure from this volume to effect the release of fluid under pressure from the quick action chamber to atmosphere at a rate faster than a service rate to cause joint cyclic operation of the continual quick service valve and the diaphragm valve to successively supply fluid under pressure from the brake pipe to and thereafter release fluid under pressure from the quick service volume at a certain rate and from the quick action chamber at a faster rate so long as fluid under pressure is released from the
    Type: Grant
    Filed: August 18, 1977
    Date of Patent: August 15, 1978
    Assignee: Westinghouse Air Brake Company
    Inventor: James E. Hart
  • Patent number: 4073544
    Abstract: This invention relates to a railway vehicle continual quick service valve device that operates in reoccurring cycles so long as fluid under pressure is being released from a train brake pipe by a brake valve device on the locomotive to, upon each cycle, locally release fluid under pressure from the train brake pipe to atmosphere via this valve device on each vehicle.
    Type: Grant
    Filed: March 23, 1977
    Date of Patent: February 14, 1978
    Assignee: Westinghouse Air Brake Company
    Inventor: James E. Hart
  • Patent number: 4058348
    Abstract: This invention relates to a novel railway vehicle brake apparatus that comprises a brake cylinder device having two tandem-connected pistons of unequal size, the larger of which is provided with a check valve and cooperates with a hollow cylindrical body in which it is slidably disposed to form on its respective opposite sides two fluid pressure storage reservoirs wherein is stored fluid under pressure for effecting a brake application. This brake apparatus further comprises a novel brake control valve device that is so responsive to a reduction of pressure in a train brake pipe as to first cause simultaneous shifting of both pistons in a brake-applying direction and a transfer of fluid under pressure from one side of the larger piston to the other until a chosen braking force is transmitted through brake rigging to press brake shoes against the wheels of a vehicle.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: November 15, 1977
    Assignee: Westinghouse Air Brake Company
    Inventor: James E. Hart
  • Patent number: 4053559
    Abstract: A continuous, four stage fluidized bed process for converting uranium hexafluoride (UF.sub.6) to ceramic-grade uranium dioxide (UO.sub.2) powder suitable for use in the manufacture of fuel pellets for nuclear reactors is disclosed. The process comprises the steps of first reacting UF.sub.6 with steam in a first fluidized bed, preferably at about 550.degree. C, to form solid intermediate reaction products UO.sub.2 F.sub.2, U.sub.3 O.sub.8 and an off-gas including hydrogen fluoride (HF). The solid intermediate reaction products are conveyed to a second fluidized bed reactor at which the mol fraction of HF is controlled at low levels in order to prevent the formation of uranium tetrafluoride (UF.sub.4). The first intermediate reaction products are reacted in the second fluidized bed with steam and hydrogen at a temperature of about 630.degree. C. The second intermediate reaction product including uranium dioxide (UO.sub.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: October 11, 1977
    Assignee: Westinghouse Electric Corporation
    Inventors: James E. Hart, David L. Shuck, Ward L. Lyon
  • Patent number: 4043604
    Abstract: A railway freight car brake control valve device comprises a novel emergency valve portion that embodies therein a plurality of simple and inexpensive diaphragm-type valves certain of which are subject on their respective opposite sides to brake pipe pressure and quick action chamber pressure. The construction and arrangement of these diaphragm-type valves are such that a service rate of reduction of brake pipe pressure enables flow of fluid under pressure from the quick action chamber to the brake pipe at a service rate, and an emergency rate of reduction of brake pipe pressure enables one of these diaphragm-type valves to effect the supply of fluid under pressure from the quick action chamber to a brake pipe vent valve device the resulting operation of which vents fluid under pressure from the brake pipe to atmosphere at an emergency rate to thereby cause an emergency brake application.
    Type: Grant
    Filed: November 11, 1976
    Date of Patent: August 23, 1977
    Assignee: Westinghouse Air Brake Company
    Inventor: James E. Hart
  • Patent number: 4043605
    Abstract: An inexpensive emergency valve device embodies a first movable abutment, subject on its respective opposite sides to the pressures in a brake pipe and a quick action chamber, that, upon a service rate of reduction of brake pipe pressure, unseats a poppet valve from one of two valve seats between which it is disposed so that, while unseated from both valve seats, fluid can flow at a service rate from the quick action chamber, one side of the first abutment and both sides of a second abutment, operatively connected to a combined emergency and brake pipe vent valve to atmosphere so long as brake pipe pressure is reduced at a service rate thereby preventing an emergency brake application.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: August 23, 1977
    Assignee: Westinghouse Air Brake Company
    Inventor: James E. Hart
  • Patent number: 3952342
    Abstract: An article of furniture basically comprising a combination bed and table, such as a drawing table. Four vertically disposed columns support a bed platform upon which a mattress may be located, and a table is supported directly above the bed platform on the columns for vertical adjustment thereon. A lamp support is mounted upon the columns directly above the table, and table vertical adjusting means in the form of a winch is mounted upon the lamp support, and through cables located within the columns provides vertical adjustment of the table. The table is mounted in guides for horizontal displacement thereof, and the table guides may be tilted to the horizontal.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: April 27, 1976
    Inventor: James E. Hart