Harold D Thomas

US Patent:

7391385, Jun 24, 2008

Filed:

Jul 11, 2007

Appl. No.:

11/776455

Inventors:

Harold J. Thomas - La Habra CA, US

International Classification:

H01Q 21/12

US Classification:

343815, 343812, 343817, 343818, 343890

Abstract:

An antenna array includes an upper antenna and a lower antenna. Each antenna includes a driver dipole element and a director element horizontally spaced apart approximately one eighth wavelength from the driver dipole element. The driver dipole element is preferably approximately one half wavelength in overall length and the director element is preferably one half wavelength in length. The upper antenna is vertically spaced above the ground by approximately one wavelength and the upper and lower antennas are vertically spaced approximately one half wavelength apart. A preferred use of the antenna array is as an amateur radio antenna and a preferred frequency band is 14. 0 to 14. 350 MHZ corresponding to an approximately 20 meter wavelength.

US Patent:

57148651, Feb 3, 1998

Filed:

Nov 13, 1996

Appl. No.:

8/748709

Inventors:

Harold J. Thomas - Whittier CA

International Classification:

H01M 1042
H02J 700

US Classification:

320 4

Abstract:

A process for salvaging dead nickel-cadmium batteries. The process utilizes a circuit having positive and negative terminals which are connected to the terminals of the battery to be salvaged. The circuit is connected to a source of 110V A. C. voltage. This voltage is applied across the terminals of an electrolytic capacitor when a first momentary switch is depressed. The terminals of the capacitor also connect to the output terminals of the salvaging circuit through a second momentary switch. The battery is salvaged by first depressing the first momentary switch to charge the capacitor. Then the first momentary switch is released and the second momentary switch is depressed.