Mark William Simon

US Patent:

45776393, Mar 25, 1986

Filed:

Nov 8, 1984

Appl. No.:

6/669290

Inventors:

Mark I. Simon - Chatsworth CA
Christopher G. Cotter - Van Nays CA

Assignee:

Spacelabs, Inc. - Chatsworth CA

International Classification:

A61B 504

US Classification:

128709

Abstract:

An ECG electrode impedance measuring approach is utilized which can determine, simultaneously, the condition of all electrodes in a three or five lead ECG monitoring configuration. A CPU automatically selects an ECG lead configuration in which all electrodes are attached to the patient and are below an impedance threshold. If the CPU cannot select a good ECG lead configuration, then the CPU signals a total lead failure. Electrode impedance is determined by passing a small DC current through each active electrode and the current is returned via the reference electrode. A comparator tests the resultant offset voltage induced between each active electrode and the reference. If the offset voltage exceeds a fixed threshold, then a flag is set and transferred to the CPU. The CPU can change the ECG lead configuration by issuing commands to an electrode lead switching network. The CPU software tests each lead configuration in a logical sequence to find one in which all the necessary electrodes are functional and a good quality ECG waveform can be processed and displayed.

US Patent:

55635768, Oct 8, 1996

Filed:

Feb 2, 1995

Appl. No.:

8/384351

Inventors:

Ze'ev Drori - Los Angeles CA
Mark I. Simon - Woodland Hills CA

Assignee:

Clifford Electronics, Inc. - Chatsworth CA

International Classification:

B60Q 100

US Classification:

340455

Abstract:

A vehicle security siren that includes a rechargeable back-up battery and an electronic circuit that minimizes current drain from the vehicle's battery by controlling the rate at which the siren's back-up battery is charged by the vehicle's battery. The circuit charges the siren's battery at a relatively high rate when the vehicle engine is running or the ignition is on, and by a low charging rate at other times. This multi-level charging rate preserves the vehicle's battery charge particularly if the vehicle is not driven for any extended time period. The circuit includes a back-up battery condition detector that issues a warning signal in the event of failure of the back-up battery. The circuit also limits the maximum siren duration in the event that either the vehicle's battery or the security system is disconnected from the siren.

US Patent:

52276090, Jul 13, 1993

Filed:

Nov 22, 1991

Appl. No.:

7/796428

Inventors:

Warner H. Simon - Canoga Park CA
Mark J. Simon - Chatsworth CA

International Classification:

B23K 900

US Classification:

219137R

Abstract:

An improved method and apparatus for welding heavy gages of high strength steels and alloys relatively quickly and inexpensively, while producing joints which are extremely strong and durable and have high fracture toughness.