Patents by Inventor Lawrence E. Vaughn

Lawrence E. Vaughn 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).

  • Portable single car charging and test device
    Patent number: 6334354
    Abstract: A single car tester including a housing having a hanger to mount the housing to a car coupler or ladder of the car. Various configurations of valves and sensors are described to perform a single car test. The controller includes a program for uniquely performing the required tests.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: January 1, 2002
    Assignee: New York Air Brake Corporation
    Inventors: Lawrence E. Vaughn, Donald Crews
  • Portable single car test device
    Patent number: 6327894
    Abstract: A single car tester including a housing having a hanger to mount the housing to a car coupler or ladder of the car. Various configurations of valves and sensors are described to perform a single car test. The controller includes a program for uniquely performing the required tests.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: December 11, 2001
    Assignee: New York Air Brake Corporation
    Inventor: Lawrence E. Vaughn
  • Portable single car test device
    Publication number: 20010039826
    Abstract: A single car tester including a housing having a hanger to mount the housing to a car coupler or ladder of the car. Various configurations of valves and sensors are described to perform a single car test. The controller includes a program for uniquely performing the required tests.
    Type: Application
    Filed: April 10, 2001
    Publication date: November 15, 2001
    Applicant: New York Air Brake Corporation
    Inventor: Lawrence E. Vaughn
  • Portable single car test device
    Publication number: 20010039827
    Abstract: A single car tester including a housing having a hanger to mount the housing to a car coupler or ladder of the car. Various configurations of valves and sensors are described to perform a single car test. The controller includes a program for uniquely performing the required tests.
    Type: Application
    Filed: April 10, 2001
    Publication date: November 15, 2001
    Applicant: New York Air Brake Corporation
    Inventor: Lawrence E. Vaughn
  • Portable single car test device
    Publication number: 20010011476
    Abstract: A single car tester including a housing having a hanger to mount the housing to a car coupler or ladder of the car. Various configurations of valves and sensors are described to perform a single car test. The controller includes a program for uniquely performing the required tests.
    Type: Application
    Filed: April 10, 2001
    Publication date: August 9, 2001
    Applicant: New York Air Brake Corporation
    Inventors: Lawrence E. Vaughn, Donald Crews
  • Portable single car test device
    Patent number: 6269682
    Abstract: A single car tester including a housing having a hanger to mount the housing to a car coupler or ladder of the car. Various configurations of valves and sensors are described to perform a single car test. The controller includes a program for uniquely performing the required tests.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: August 7, 2001
    Assignee: New York Air Brake Corporation
    Inventor: Lawrence E. Vaughn
  • Brake cylinder leakage test method and device
    Patent number: 6094977
    Abstract: A test device and a method of testing leakage of a brake cylinder on a railroad car having a brake pipe and brake valve. The method includes charging the brake pipe, discharging the brake pipe at least at a service rate to actuate the brakes by charging the brake cylinder and simultaneously with charging the brake cylinder charging a reference volume to the brake cylinder pressure. Discharging of the brake pipe is terminated and the pressure in the reference volume is maintained. The difference of pressure between the brake cylinder and the reference volume, at a fixed period after the beginning of maintaining the pressure in the reference volume, is measured to determine the leakage.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: August 1, 2000
    Assignee: New York Air Brake Corporation
    Inventor: Lawrence E. Vaughn
  • Brake pipe pressure modulating valve device
    Patent number: 4842341
    Abstract: A modulation valve device for governing pressure in a brake pipe has coaxial accelerating and releasing valves provided wherein accelerated application and release pistons are dovetailed together to reduce the size and the weight of the modulating device.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: June 27, 1989
    Assignee: General Signal Corporation
    Inventors: Lawrence E. Vaughn, Walter E. Rojecki, Thomas H. Engle
  • Fluid pressure brake control portion
    Patent number: 4714297
    Abstract: A fluid pressure control portion for a fluid brake motor is inserted in a fluid pressure control passage between a triple valve and a brake motor for a particular car truck. This portion comprises a proportioning valve connected to an inshot valve through a pipe bracket to proportionally reduce brake pressure on a particular brake motor, after inshot at the same pressure as other brake motors of the same vehicle to adjust braking in accordance with lighter loading of end trucks for articulated freight cars.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: December 22, 1987
    Assignee: General Signal Corporation
    Inventor: Lawrence E. Vaughn