Thomas A Head, 86104 Sunningdale Dr, Flat Rock, NC 28731

8033236, Oct 11, 2011

Sep 8, 2006

11/517976

Mark Michel - Greer SC, US
Thomas S. Head - Greenville SC, US

Ellcon National, Inc. - Greenville SC

B60Q 1/44

116 52, 116 58 A, 188 111 R, 73862471

A load indicator for use with a railway car hand brake that is connected to a railway car brake rigging comprising a housing, a plurality of levers pivotally mounted in the housing, each of the plurality of levers having a first end and an opposite second end, a plate coupled to each of the plurality of lever second ends, wherein the plate is moveable with respect to the housing, and a plurality of springs each operatively coupled between a respective one of the plurality of lever first ends and the housing. At least one of the plurality of lever first ends is moveable between a first position in which tension exerted on the plate from the railway car hand brake is within a predetermined range, and a second position in which tension exerted on the load indicator from the railway car brake rigging is outside the predetermined range.

8522823, Sep 3, 2013

Jul 29, 2010

12/846575

Robert Gayfer - Greenville SC, US
Mark Michel - Greer SC, US
Thomas S. Head - Greenville SC, US

Ellcon National, Inc. - Greenville SC

F16K 15/14

137846, 137843, 303 81

A railway car control valve comprises a brake pipe port, an auxiliary reservoir port, a main piston configured to compare air pressures at the brake pipe port and the auxiliary reservoir port, and a one-way check valve positioned intermediate the brake pipe port and the auxiliary reservoir port. The one way check valve comprises a body having a bore extending from its first end to its second end, an elongated insert configured to reduce the rate of air flow through the body, and a sleeve received on the insert's outer surface. The insert is received in the body bore. One of the insert and the sleeve is configured to move between a first position and a second position that either allows air to flow or prevents air from flowing, respectively.

2010005, Mar 11, 2010

May 22, 2009

12/470979

Mark Michel - Greer SC, US
Thomas Stuart Head - Greenville SC, US

F16D 66/00

188 111E

A brake mechanism having a chain locator comprises a chain coupled between a braking mechanism and a railway car brake system, a marker is releasably secured to the chain, and a sensor is coupled to the railway car proximate the chain for detecting the state of the railway car brake system. The chain is moveable between a first position in which the marker is not sensed by the sensor, and a second position in which the sensor detects the marker.

2011011, May 19, 2011

Nov 13, 2009

12/618285

Thomas S. Head - Greenville SC, US
James D. Wasness - Inman SC, US

B60T 8/58

303132

An anti-locking brake module comprises a housing having a first port coupled to a brake pipe, a second output port coupled to a brake cylinder, and a third port coupled to atmosphere. A blocking valve is in fluid communication with the first port and a vent valve is in fluid communication with the blocking valve, the second port and the third port. At least one sensor is coupled to an axle on the railcar. A microprocessor coupled to the blocking valve, the vent valve and the at least one sensor is configured to calculate one of a wheel speed of the railcar axle and a deceleration rate of the railcar axle based on signals received from the at least one sensor, and compare the calculated one of the wheel speed of the railcar axle and the deceleration rate of the railcar axle with a reference value. In response to the comparison, the blocking valve and the vent valve are activated to vent brake cylinder air pressure out of the third port. A power supply is operatively coupled to the microprocessor.

2012003, Feb 16, 2012

Aug 13, 2010

12/855846

Zhixi Li - Vienna VA, US
Thomas Williston Head - Chantilly VA, US
Aiman Shabsigh - McLean VA, US
Peter Frederick Krug - Kanata, CA
Richard Cuthill - Reston VA, US

H01Q 3/00

342372, 342374

An antenna interface system, device, method and program allow access to a centralized antenna interface by establishing connection to a server via a first network connection, wherein the server includes a user interface configured to establish a communication connection between the antenna interface system and the user of the access device. The server also includes one or more antenna control programs which when executed provide the command signals, and a second network connection establishes a communication connection between the server and converters that transmit the command signals from the server to the antennas. Each converter is located in the vicinity of one or more antennas and the antennas are connected to the converters so as to receive the command signals. The command signals are used for making adjustments to and gathering information for antenna parameters of the antennas.

2012011, May 10, 2012

Nov 9, 2010

12/942267

Thomas Williston Head - Chantilly VA, US
Chintan Patel - Sterling VA, US
Richard Cuthill - Reston VA, US

H04W 24/00

370252

A method, program, system and apparatus for implementing programmable radio patterns (i.e. beam-forming) in a wireless communication network are discussed. Beam-forming is performed by weighting data samples to compensate for phase variation and frequency variation introduced by a signal path. The phase variation and frequency variation introduced by a signal path is estimated by correlating stored data and calibration data. The phase variation and frequency variation are compensated for by applying phase and frequency corrections, or weights, to the data so as to equalize the phase variation and t frequency variation of the data.

2019015, May 23, 2019

Jan 18, 2019

16/251602

- Greenville SC, US
Thomas S. Head - Greenville SC, US

F41A 9/85
F42B 39/02

Speed loaders and assemblies for loading cartridges in revolver cylinders are provided. A speed loader assembly for loading cartridges in a revolver cylinder includes a speed loader, the speed loader including a body which defines a plurality of passages, each of the plurality of passages configured to accommodate a cartridge therein. The speed loader assembly further includes a protective casing removably connectable to the speed loader, the casing including a sidewall defining an interior and having a closed polygonal cross-sectional profile. Portions of cartridges extending from the passages are encased by the protective casing.

2019015, May 23, 2019

Jan 18, 2019

16/251656

- Greenville SC, US
Thomas S. Head - Greenville SC, US

F41A 9/85
F42B 39/02

Speed loaders and assemblies for loading cartridges in revolver cylinders are provided. A speed loader assembly for loading cartridges in a revolver cylinder includes a speed loader, the speed loader including a body which defines a plurality of passages, each of the plurality of passages configured to accommodate a cartridge therein. The speed loader assembly further includes a protective casing removably connectable to the speed loader, the casing including a sidewall defining an interior and having a closed polygonal cross-sectional profile. Portions of cartridges extending from the passages are encased by the protective casing.