STEVEN PAUL HENDRIX
Pilots at Brandywine Rd, Macedonia, OH

6030351, Feb 29, 2000

Jun 26, 1998

9/105807

Robert N. Schmidt - Cleveland OH
Jamison J. Float - Cleveland OH
Steven P. Hendrix - Sagamore Hills OH

Cleveland Medical Devices Inc. - Cleveland OH

A61B 500

600592

A pressure relief reminder and compliance system and method to prevent the formation of pressure sores on a person's skin is disclosed. The system comprises sensor which responds according to pressure exerted on the skin; a programmable microcontroller connected to the sensor; means for programming the microcontroller; and indicating means. A programming device operates software to changeably program the microcontroller with certain values of pressure and time, such that the level and duration of pressure on the skin and the duration of the absence of pressure thereon, are compared to the programmed values, is given to the wheelchair user, and the levels and duration of pressure are stored in memory. The programming device also can download from the memory the recorded values for review and analysis by a physician, clinician, therapist or other health professional. The indicators can be an audible alarm, like a beeper or buzzer, or a vibrator.

5755230, May 26, 1998

Sep 18, 1995

8/529646

Robert N. Schmidt - Cleveland OH
James R. Buckett - Chagrin Falls OH
Steven P. Hendrix - Sagamore Hills OH

Cleveland Medical Devices Inc. - Cleveland OH

A61B 50476

128731

A wireless EEG system for effective auditory evoked response, comprising an electrode array which is adapted to be attached to a person and senses voltages produced by the brain electrical activity of the person; transmitter electrically connected to the electrode array such that the transmitter produces a radio frequency signal corresponding to the voltages sensed by the electrode array, encodes the radio frequency signal with error correcting encoding and transmits the radio frequency signal by radio frequency telemetry through a transmitting antenna; the transmitter utilizing carrier frequency shift keyed circuitry to modulate a phase locked loop synthesized carrier frequency and reference frequency shift keyed circuitry to modulate a reference frequency to allow for non-return to zero format of the radio frequency signal obviating the need for Manchester encoding; receiver that receives through a receiving antenna the radio frequency signal produced and transmitted by the transmitter and whereby the receiver decodes the radio frequency signal and produces a data output corresponding to the radio frequency signal received by the receiver; and an operator interface connected to the receiver such that the operator interface receives as input the data output produced by the receiver such that the operator interface records a verbal stimulus given by an individual and provides an auditory stimulus whereby the operator interface displays the data output, such display providing a comparison of the brain electrical activity in response to said stimulus.

6167258, Dec 26, 2000

Oct 9, 1998

9/168571

Robert N. Schmidt - Cleveland OH
Donald C. Ferencz - Cleveland OH
Steven P. Hendrix - Sagamore Hills OH

Cleveland Medical Devices Inc. - Cleveland OH

H04M 300, H04M 1100, H04Q 720, G08L 1916

455419

A programmable wireless data acquisition system, comprising a transmitting device and a receiving device. The transmitting device is capable of receiving multiple external inputs and generating and transmitting a radio frequency signal encoded with data corresponding to the inputs. The transmitting device is variably configurable to enable it to accept inputs having different characteristics and ranges and to enable it to provide variable sampling rate, gain and filtering of the inputs. The transmitting device having a microprocessor such that the microprocessor controls the operation thereof. The receiving device is capable of receiving the radio frequency signal, demodulating it and decoding the data. The receiving device has a microprocessor such that the microprocessor controls the operation thereof. External programming device programs the transmitting device and the receiving device by wired connection or through radio frequency signal.

6223061, Apr 24, 2001

Jul 25, 1997

8/900329

Farron L. Dacus - Irving TX
Robert N. Schmidt - Cleveland OH
Steven P. Hendrix - Sagamore Hills OH

Cleveland Medical Devices Inc. - Cleveland OH

H04B 100

455574

An apparatus for low power radio communication comprising a transmitter having a frequency synthesizer and transmit antenna such that the frequency synthesizer comprises a phase locked loop circuit with a voltage controlled oscillator having a variable frequency output and with a loop filter/sample and hold circuit that allows opening of the synthesizer control loop and with special means of limiting the resulting frequency drift in the open loop state. The transmitter produces an output signal and the loop filter/sample and hold circuit holds the voltage controlled oscillator substantially on frequency such that the output signal remains stable, with a minimum of frequency drift, over a period of time when the phase lock loop synthesizer is set to an open loop state to allow frequency modulation unimpeded by the normal frequency correcting action of the synthesizer and for the frequency synthesizer to be partially powered down to reduce power consumption. The frequency modulation is linearized over a band of interest and undesired frequency shift at the initiation of modulation is suppressed. Receiver having automatic frequency control is included to extend the open loop transmit time of the transmitter, where the automatic frequency control system automatically tunes the receiver to correct for frequency error and for the frequency drift resulting from opening the phase locked loop of the frequency synthesizer, allowing communications to continue in the presence of such drift and of other frequency error.

5838244, Nov 17, 1998

Oct 8, 1996

8/727240

Robert N. Schmidt - Cleveland OH
Steven P. Hendrix - Sagamore Hills OH

Cleveland Medical Devices Inc. - Cleveland OH

G08B 2100

340635

An interface pressure measurement device, comprising a sensor comprising two sensor sheets formed from thin flexible plastic material, each sensor sheet has a sensor area having flexible conductive ink printed thereon comprising a conductive surface with an electrical lead such that when the sensor sheets touch, an electrical contact is present forming a sensor switch, and the sensor also has sensor tubing. A digital device is connected to the sensor by the sensor tubing. The digital device comprises an enclosure, a push button, pressure transducer, signal conditioning, microcontroller with processor, analog-to-digital converter, memory, clock, display, buzzer and battery/power supply wherein the processor interrupts the battery/power supply current flow to shut off the digital device after a preset time. An inflator bulb having inflator tubing is connected to the digital device by the inflator tubing such that the inflator bulb is used to manually pump air through the digital device to the sensor whereby the pressure from the air in the sensor between the sensor sheets is sensed by the pressure transducer. When the microcontroller senses the opening of the sensor switch, the microcontroller through the processor transmits a signal to the display to provide a visual indication corresponding to the pressure in the sensor and transmits a signal to the buzzer to provide an audible tone.

6172579, Jan 9, 2001

Feb 2, 1999

9/241810

Farron L. Dacus - Irving TX
Steven P. Hendrix - Sagamore Hills OH

Cleveland Medical Devices Inc. - Cleveland OH

H03L 300

332128

The present invention relates to a frequency modulated system, and a method for operating same, including a phase locked loop frequency synthesizer circuit which synthesizes a carrier frequency through the use of an electronically controlled oscillator. The circuit, which has a certain loop bandwidth, includes a reference frequency source and a bypassed correcting integrator. A modulating signal simultaneously modulates the oscillator, the reference frequency source and the bypassed correcting integrator such that the carrier frequency is frequency modulated with a certain frequency deviation. The magnitude of the modulation of the oscillator, the reference frequency source and the correcting integrator are controlled over a frequency range by frequency blending the reference frequency source and the bypassed correcting integrator such that low distortion modulation over a wide frequency range is achieved.

8486124, Jul 16, 2013

Nov 15, 2007

11/940852

Steven Hendrix - Sagamore Hills OH, US
Kenneth Oif - Beachwood OH, US
Michael Kaufman - Beachwood OH, US

National Biological Corporation - Beachwood OH

A61N 5/06

607 88

A phototherapy treatment dispensing device provides therapeutic light emissions treatments. The device provides additional means for controlling a patient's exposure to those treatments through a controlled protocol timer. The controlled protocol timer can provide for incremental exposure increases; monitors patient compliance with a treatment regimen; and reminds the patient when a treatment will soon be overdue.