Joseph David Orndorff

US Patent:

51516543, Sep 29, 1992

Filed:

Jul 6, 1988

Appl. No.:

7/215642

Inventors:

Stanley J. Krzywicki - Olney MD
Timothy S. Gibson - Columbia MD
Joseph D. Orndorff - Baltimore MD

Assignee:

Systems Control, Inc. - Sunnyvale CA

International Classification:

G01P 342
G01P 348
G01P 354

US Classification:

324160

Abstract:

A tachometer system for an internal combustion engine. The tachometer system uses one of two electromagnetic pulse sensing means to detect an electromagnetic signal produced by a firing of the engine. The sensing device may be an antenna or an inductive pickup. One of the signals is chosen and processed. A parameter indicative of pulse timing in the output signal is determined. This parameter is most advantageously a time between different ones of the output signals. The parameter is then converted into a value indicative of revolutions per unit time of the engine. The converting structure is advantageously formed by a personal computer.

US Patent:

20140238048, Aug 28, 2014

Filed:

Feb 22, 2013

Appl. No.:

13/774807

Inventors:

Joseph D. Orndorff - Halethorpe MD, US
Stephen Hope - Bel Air MD, US

International Classification:

F17C 13/02

US Classification:

62 491

Abstract:

A cryogenic system including a source of cryogen fluid, a cryogenic chamber receiving the cryogen fluid to cool the cryogenic chamber, an exhaust for venting spent cryogen from the cryogenic chamber, a cryogenic sensor positioned in the cryogenic chamber to monitor a condition, and a cryogenic sensor readout module associated with the cryogenic sensor. The cryogenic sensor readout module including a power bus, an excitation bus, a low-noise signal processor, an analog to digital converter, a converter, an output module, a liquid crystal display (LCD), and an Ethernet port.

US Patent:

20140238049, Aug 28, 2014

Filed:

Feb 22, 2013

Appl. No.:

13/774815

Inventors:

Joseph D. Orndorff - Halethorpe MD, US
Stephen Hope - Bel Air MD, US

International Classification:

F25D 29/00

US Classification:

62 491

Abstract:

A cryogenic system including a source of cryogen fluid, a cryogenic chamber receiving the cryogen fluid to cool the cryogenic chamber, an exhaust for venting spent cryogen from the cryogenic chamber, a cryogenic sensor positioned in the cryogenic chamber to monitor a condition, and a cryogenic signal conditioning unit associated with the cryogenic sensor. The cryogenic signal conditioning unit includes a software programmable current source, a programmable gain amplifier, an analog to digital converter, a memory, and a user interface.