Gary L Sanders

US Patent:

45395624, Sep 3, 1985

Filed:

Dec 30, 1982

Appl. No.:

6/454716

Inventors:

Gary G. Sanders - Lakewood OH

Assignee:

The Scott & Fetzer Company - Cleveland OH

International Classification:

G08B 2100

US Classification:

340657

Abstract:

Current provided to a generally constant impedance load is monitored to detect a predetermined load current decrease not resulting from normal load voltage fluctuations, such decrease indicating an abnormal increase in load impedance. A latching alarm is actuated when the predetermined load current decrease is detected. The degree of load current decrease tolerable without activating the alarm is determined by a user-adjustable percentage-of-change sensitivity control. A logic gate blocks alarm functions when the load current decreases to an abnormally low level. The disclosed device can be used to monitor the status of a line voltage energized heat trace cable constituted by a plurality of parallel-connected resistance wire heating elements. Multiple monitoring devices can be used in conjunction with a master alarm which can be reset without resetting the particular monitoring device alarm that triggered the master alarm.

US Patent:

46850465, Aug 4, 1987

Filed:

Oct 3, 1985

Appl. No.:

6/783878

Inventors:

Gary G. Sanders - Lakewood OH

Assignee:

The Scott & Fetzer Company - Cleveland OH

International Classification:

H02M 704
G05F 500

US Classification:

363 89

Abstract:

A full-wave bridge rectifier has its input connected directly across a 115 volt RMS alternating current line operating at 60 Hz wherein the output of the bridge provides 120 Hz pulsating direct current at 161 peak volts. A pair of transistors, switching on and off in alternating fashion, continuously apply to a low power requirement load only a leading edge portion and a trailing edge portion of each of the 120 Hz direct current pulses. The resultant direct current voltage, e. g. 11. 3 peak volts, across the load is thus substantially reduced to a desirable level as compared to the voltage, 161 peak volts, of the pulsating direct current provided at the line driven bridge output. In another embodiment, the function of the transistors is provided by a pair of operational amplifiers which control the switching of a field-effect transistor in series with the load.

US Patent:

46255605, Dec 2, 1986

Filed:

May 13, 1985

Appl. No.:

6/733060

Inventors:

Gary G. Sanders - Lakewood OH

Assignee:

The Scott & Fetzer Company - Cleveland OH

International Classification:

G01L 912

US Classification:

73718

Abstract:

A highly accurate and miniaturized pressure transducer is disclosed which includes first and second capacitors as a part of the integrated circuit, which also includes an Eccles-Jordan astable multivibrator. The miniaturization of both the capacitors and the entire multivibrator circuit in an integrated circuit establishes all components so that they are very closely matched on the two halves of the multivibrator, and so that whatever environmental disturbances, e. g. , electrical, thermal, noise, etc. , are encountered, are shared by both halves, and hence negated, so far as output drift is concerned. The multivibrator has a rectangular wave output and the duty cycle thereof is proportional to the force or pressure applied. This duty cycle is changed upon applied pressure, which changes one of the capacitors, and measurement of the duty cycle is a measurement of the applied force or pressure. The entire output circuit of the transducer is a digital output to provide digital processing through to a digital display.

US Patent:

46315390, Dec 23, 1986

Filed:

Jan 19, 1983

Appl. No.:

6/459262

Inventors:

Gary G. Sanders - Lakewood OH
Michael E. Corwon - Parma OH

Assignee:

The Scott & Fetzer Company - Cleveland OH

International Classification:

G08C 906
G08C 1936

US Classification:

34087029

Abstract:

A mechanical dial indicating gauge or meter that, without mechanical loading, optoelectronically detects and encodes the pointer position as a digital signal by use of a technique of distributed point position latching. Counter means drives a circuit which cylically sequentially lights LED's along a scale and the count is latched that corresponds to current counter position when a detector on the scale pointer is activated during the sequential lighting. This latched count provides the digital signal of pointer position. This digital signal may then by transmitted to remote indicators, controllers, computers, and/or may be compared to preset values yielding set point outputs. An electrical lead for the detector includes a spiral loosely surrounding the pointer stem.

US Patent:

48024848, Feb 7, 1989

Filed:

May 22, 1987

Appl. No.:

7/077550

Inventors:

Ernest H. Friedman - East Cleveland OH
Gary G. Sanders - Lakewood OH
Steven L. Hunter - Livermore CA

International Classification:

A61B 500

US Classification:

128630

Abstract:

Responses of a human subject may be by voice, hand or foot movement, or bodily secretions, as examples. A hiatus of such responses may be termed a lapse in the continuity of the response, including a hesitation pause in the voice, hesitation in the movement of writing, a movement of hand or foot on a monitored control of a motor vehicle or vehicle simulator, or pulsatile bodily secretions on a monitored control of an implantable insulin pump. In a voice response, the hesitation pause may be more than about one second in the voice of a subject during a dialogue or monologue. The hiatus rate of such responses is indicated by the present apparatus, as in the average hiatus duration for two or more hiatus rates. The dominant hiatus rate is also determined and indicated. A microprocessor is utilized in such determination.

US Patent:

48524085, Aug 1, 1989

Filed:

Sep 3, 1987

Appl. No.:

7/092608

Inventors:

Gary G. Sanders - Lakewood OH

Assignee:

Scott Fetzer Company - Westlake OH

International Classification:

G01L 708
G01L 906
G01L 912

US Classification:

73718

Abstract:

A semiconductor transducer with a diaphragm is constructed utilizing a substrate wherein a first portion of that first face is etched to a planar level to achieve a second portion as a physical stop on this substrate, the physical stop having a planar stop face, a sloping sided cavity is etched into a semiconductor wafer from a first face thereof to form a deformable diaphragm in this semiconductor wafer. The semiconductor wafer is anodically bonded to the substrate planar level, with the physical stop located in the cavity and with the stop face acting to prohibit excess movement of the diaphragm. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

US Patent:

45439575, Oct 1, 1985

Filed:

Jun 13, 1983

Appl. No.:

6/503821

Inventors:

Ernest H. Friedman - East Cleveland OH
Gary G. Sanders - Lakewood OH
Steven L. Hunter - Livermore CA

International Classification:

A61B 500

US Classification:

128630

Abstract:

Responses of a human subject may be by voice, hand or foot movement, or bodily secretions, as examples. A hiatus of such responses may be termed a lapse in the continuity of the response, including a hesitation pause in the voice, a movement of hand or foot on a monitored control of a motor vehicle or vehicle simulator, or pulsatile bodily secretions on a monitored control of an implantable insulin pump. In a voice response, the hesitation pause may be more than about one second in the voice of a subject during a dialogue or monologue. The hiatus rate of such responses is indicated by the present apparatus, as is the average hiatus duration for two or more hiatus rates. The dominant hiatus rate is also determined and indicated. A microprocessor is utilized in such determination. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.