John W Drake

US Patent:

56509332, Jul 22, 1997

Filed:

Aug 21, 1996

Appl. No.:

8/701196

Inventors:

Richard J. Mazur - Greer SC
James A. Wood - Spartanburg SC
John W. Drake - Cincinnati OH

Assignee:

Westinghouse Air Brake Company - Wilmerding PA

International Classification:

B60T 1368

US Classification:

36442601

Abstract:

Apparatus for implementing two to three state emulator process so two state dump valve can be used in wheel slip correction for braking systems comprising an AND gate which receives a plurality of inputs for generating an output based on value of inputs. An OR gate receives another plurality of inputs for generating another output based on value of inputs. One such input being the output generated by such AND gate. A valve response checking unit receives another plurality of inputs for generating a plurality of outputs. One input is the output generated by such OR gate. Another OR gate receives another plurality of inputs for generating an output based on value of inputs. A lap state determination unit receives another plurality of inputs for generating another plurality of outputs. One input being one of outputs generated by such valve response checking unit and another input being such output generated by such second OR gate. A lap state interrupt processor unit receives another plurality of inputs for generating another plurality of outputs.

US Patent:

52095517, May 11, 1993

Filed:

May 28, 1991

Appl. No.:

7/706473

Inventors:

James A. Wood - Spartanburg SC
Richard J. Mazur - Greer SC
John W. Drake - Cincinnati OH

Assignee:

Westinghouse Air Brake Company - Wilmerding PA

International Classification:

B60T 1300

US Classification:

303 7

Abstract:

An analog service brake response enhancing circuit including an intelligent filter circuit for removing voltage transients appearing on input feedback signals, a friction brake request circuit for receiving input brake command request signals, a force motor calculating circuit for calculating the degree of service brake which is to be applied on a railway vehicle, and service brake control apparatus for controlling whether an application or a release mode of braking should be instituted on the vehicle and for accelerating the operation of an analog valve device to produce a full service brake condition for a predetermined time period.

US Patent:

52441717, Sep 14, 1993

Filed:

Nov 20, 1991

Appl. No.:

7/795358

Inventors:

John W. Drake - Cincinnati OH
James A. Wood - Spartanburg SC

Assignee:

Westinghouse Air Brake Company - Wilmerding PA

International Classification:

B61C 1508
B60T 800

US Classification:

2461681

Abstract:

An interslip sequence slip control system for multiple wheel axle units for railway vehicles including an electronic logic network for determining whether all the axles of the vehicle are slipping at the same time. A first circuit for selecting the maximum axle speed on the vehicle and a second circuit for selecting the minimum axle rate on the vehicle. A converter circuit for increasing the bit size of the maximum axle speed signal. A plurality of calculating circuits for producing a speed reference signal. An interslip sequence circuit for supplying the maximum axle speed signal to a reconversion circuit when at least one axle is not undergoing slippage and for supplying the speed reference signal to the reconversion circuit when all the axles on the vehicle are slipping.

US Patent:

54539420, Sep 26, 1995

Filed:

Jun 6, 1994

Appl. No.:

8/254734

Inventors:

James A. Wood - Spartanburg SC
John W. Drake - Cincinnati OH
Paul E. Jamieson - Greer SC

Assignee:

Westinghouse Air Brake Company - Wilmerding PA

International Classification:

G01P 300

US Classification:

364565

Abstract:

A vehicle-in-spin speed processing system for multiple wheel axle units of a self-powered railway vehicle in which a reasonably accurate vehicle speed reference signal is produced as the wheel axle units are experiencing wheel spin during acceleration of the self-powered railway vehicle so that a minimum amount of error occurs in the output data of speedometers, odometers, and event recorders.

US Patent:

52807185, Jan 25, 1994

Filed:

Aug 3, 1992

Appl. No.:

7/923678

Inventors:

John W. Drake - Cincinnati OH
David J. Pcsolar - Greer SC
James A. Wood - Spartanburg SC

Assignee:

Westinghouse Air Brake Company - Wilmerding PA

International Classification:

G01L 528

US Classification:

73129

Abstract:

A transducer health and offset calibration processing arrangement for a multiple axle railway vehicle including a brake cylinder transducer correction function circuit coupled to a stuck/dragging brake signal terminal, a brake command signal terminal, and a power/brake trainline signal terminal. A zero speed latch circuit and a transducer circuit interface health check circuit connected to a zero speed signal terminal. A first three-input AND gate connected to the zero speed signal terminal, a snowbrake trainline signal terminal, and a Servotrol output signal terminal. A second three-input AND gate coupled to the output of the first three-input AND gate and a highest axle speed signal terminal. A minimum axle rate discriminator circuit connected to each of plurality of axle rate signal terminals of the multiple axles of the railway vehicle. A brake cylinder pressure circuit check and a brake cylinder pressure signal generator coupled to a truck brake cylinder pressure signal terminal.

US Patent:

53155203, May 24, 1994

Filed:

Sep 6, 1991

Appl. No.:

7/756021

Inventors:

John B. Drake - Cincinnati OH
James A. Wood - Spartanburg SC
Carl J. Slavick - Greenville SC
Richard J. Mazur - Greer SC

Assignee:

Westinghouse Air Brake Company - Wilmerding PA

International Classification:

B60L 300

US Classification:

36442605

Abstract:

A friction brake interface health check system for dynamically diagnosing and monitoring the operational status of a plurality of input signals by using a pattern fault recognition and an intelligent diagnostic matrix which is generated by brake level demand, power/brake trainline, electric brake feedback and electric brake rate request modules to control an interface health determination fault monitor module which determines which errors are to be reported to the event interface file, the RAM fault log and which are displayed on a seven (7) segment display.

US Patent:

52900959, Mar 1, 1994

Filed:

Feb 12, 1993

Appl. No.:

8/017168

Inventors:

James A. Wood - Spartanburg SC
John W. Drake - Cincinnati OH
David J. Pcsolar - Greer SC

Assignee:

Westinghouse Air Brake Company - Wilmerding PA

International Classification:

B60T 888

US Classification:

303 92

Abstract:

An automatic and dynamic health monitoring system for detecting wheel lockup conditions caused by an unintentional unreleased handbrake or an unexpected traction motor seizure on multiple-axle railway vehicles by logically sensing and determining the status and operations of the input sensors and indicators to quickly and accurately diagnose the situation and to initiate an output fault code log signal.