Thomas D Mcgraw

US Patent:

56280505, May 6, 1997

Filed:

Dec 9, 1994

Appl. No.:

8/352595

Inventors:

Thomas F. McGraw - Fairfax VA
Jeffrey A. Mitulla - Burke VA
Richard S. Woll - Glen Burnie MD

Assignee:

Scientific and Commercial Systems Corporation - Alexandria VA

International Classification:

H04B 7185

US Classification:

455 121

Abstract:

The Disaster Warning Communications System is a message relay system designed to provide backup warning of impending natural hazard in areas where normal communications are vulnerable to losses imposed by geographic influence. It has been designed to take advantage of the near-hemispheric communications access of existing geostationary weather satellites. This broad coverage allows a single satellite to provide warning to virtually all the inhabited islands in the hemisphere surrounding the subpoint of the satellite, excluding only the extreme polar areas. By extension, three such satellites can cover the entire populated Earth.

US Patent:

40386511, Jul 26, 1977

Filed:

Jul 9, 1975

Appl. No.:

5/594425

Inventors:

Thomas F. McGraw - Springfield VA

International Classification:

G06F 314

US Classification:

340336

Abstract:

The miniature digital communicator is a compact communications device intended for use where conditions are noisy, where no noise at all is permitted or where privacy is desired. It is a portable device with a series of alpha-numeric display elements. Radio-transmitted, digitally formatted data is displayed on the miniature digital communicator in the form of alpha-numeric characters which march or ripple across the display from right to left at an advancing rate of two characters per second. The entire package is small enough to be carried on the person, perhaps in a pocket, like the smallest electronic calculator.

US Patent:

41664450, Sep 4, 1979

Filed:

Dec 30, 1977

Appl. No.:

5/866188

Inventors:

Thomas F. McGraw - Springfield VA

International Classification:

F24J 302

US Classification:

126432

Abstract:

A solar collector having a frame-like wooden housing which contains therein heat absorbing material in the form of pellets of coal or "diced" automobile tires. This material is sealed within the housing by a transparent cover. The resultant sealed container allows a flow of working fluid to pass therethrough by way of a pair of perforated pipes. The collector is oriented to receive maximum solar radiation in order to heat the heat absorbing material. The working fluid which flows in contact with the heat absorbing material, absorbs heat thereform, and, by means of a circulating system which is not part of the invention is generally carried to a storage tank or the like for use at a later time.

US Patent:

46744169, Jun 23, 1987

Filed:

Sep 6, 1984

Appl. No.:

6/647783

Inventors:

Thomas F. McGraw - Fairfax VA

International Classification:

E05G 104
E05B 1516

US Classification:

109 23

Abstract:

A storage safe for containing securely therein a plurality of flexible media such as optical video disks. The storage safe is made of a sturdy body which is capable of being embedded in a cement floor, or the like. A cover encloses the cavity-like interior of the body and can only be removed by activating a combination mechanism assembly by applying the proper combination thereto. Any tampering with the combination mechanism assembly is defeated by the novel construction of the combination mechanism assembly. The cover has a slot therethrough and a labyrinth-like structure associated therewith so as to allow the flexible media to pass into the interior of the body but which prevents its unauthorized withdrawal therefrom. In addition, this labyrinth-like structure directs any undesireable fluid away from the flexible media stored within the body of the safe.

US Patent:

58258647, Oct 20, 1998

Filed:

Jul 3, 1997

Appl. No.:

8/888364

Inventors:

Thomas F. McGraw - Fairfax VA
Jeffrey A. Mitulla - Burke VA
Richard S. Woll - Glen Burnie MD

Assignee:

Scientific and Commercial Systems Corporation - Alexandria VA

International Classification:

H04Q 738

US Classification:

379210

Abstract:

The Personal Automatic Registration System (PARS) is a system of electronic circuits which have been designed to recognize a signal the presence or absence of a designated object or person within a specific area. The basic system consists of a transportable transmitter unit and one or more fixed base stations, or receivers.

US Patent:

44379374, Mar 20, 1984

Filed:

Dec 3, 1981

Appl. No.:

6/327135

Inventors:

Thomas F. McGraw - Fairfax VA

International Classification:

B01D 328
C07C 2980

US Classification:

202160

Abstract:

A continuous trickle-down distillation unit for producing hydrated alcohol having a compact, elongated distillation tube through which a fluid mixture including alcohol as one of its constituents passes. Within the distillation tube only the alcohol-predominant portion of the fluid mixture is vaporized while the remaining constituents of the fluid mixture are removed. The vaporized alcohol-predominant portion is condensed within a chamber which communicates with the distillation tube and is removed therefrom by a collection plate which extends partially into the chamber.

US Patent:

20180087165, Mar 29, 2018

Filed:

Feb 22, 2017

Appl. No.:

15/438768

Inventors:

- Fairfax VA, US
Monte S. Chawla - University Park MD, US
Randolph R. Davis - Fairfax VA, US
Dorin A. Jannotta - Jacksonville FL, US
Austin Lowrey, III - Lancaster PA, US
Thomas F. McGraw - New Bern NC, US
Frederick Sandel - Fairfax Station VA, US
Donald J. Waltman - Pasadena MD, US

Assignee:

Marathon Systems, Inc. - Fairfax VA

International Classification:

C25B 15/02
C25B 9/12
C25B 15/08

Abstract:

An improved, gaseous electrolysis apparatus can include a cooled header for electric connections or couplings, an exemplary co-disposed, coaxial heat exchanger around the reaction chamber to extract heat from the reaction chamber and exemplary rugged gas source and collection manifold(s) to support fixed and/or mobile applications in an embodiment. The system can include a heated anode and co-disposed cylindrical cathode within the reaction chamber and an improved electronic control circuit in an embodiment.