Patents Represented by Attorney Robert N. Schmidt
  • Patent number: 5838244
    Abstract: 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.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: November 17, 1998
    Assignee: Cleveland Medical Devices Inc.
    Inventors: Robert N. Schmidt, Steven P. Hendrix
  • Patent number: 5755230
    Abstract: 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 recei
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: May 26, 1998
    Assignee: Cleveland Medical Devices Inc.
    Inventors: Robert N. Schmidt, James R. Buckett, Steven P. Hendrix
  • Patent number: 5619186
    Abstract: Device for alarming foot weight capable of operating without restricting an individual's movement. The device comprising a power supply, at least one resistive force sensor, signal conditioning means, calibrating means, programming means and alarm generating means. The alarm generating means generates an alarm when the weight applied to the foot force sensor is at, within or above at least one weight limit or weight range.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: April 8, 1997
    Assignee: Cleveland Medical Devices Inc.
    Inventors: Robert N. Schmidt, Richard S. Diefes
  • Patent number: 5408873
    Abstract: Foot force sensor for measuring compressive force exerted by a foot. The foot force sensor is in the form of an insole made of layers of relatively thin, planar, flexible, resilient, dielectric material. Electrical contact means having first and second poles and electrical leads extending therefrom is interposed between the layers of the insole. An electrically resistive material is also interposed between the layers of the insole but displaced from the electrical contact means. An electrically conductive interconnecting means is connected between the electrical contact means and the electrically resistive material. The electrically conductive interconnecting means has a plurality of electrically isolated conductive paths laterally displaced from one another and extending through it.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: April 25, 1995
    Assignee: Cleveland Medical Devices, Inc.
    Inventors: Robert N. Schmidt, Howard J. Chizeck, Richard S. Diefes
  • Patent number: 5397315
    Abstract: Apparatus and method for discharging urine from a urine collection bag using an electrically operated valve means connected to the drain tube of the urine collection bag and the electrically operated valve means mounted on a support means, such as a wheelchair, in a manner to be separated from the user's skin and clothing. The electrically operated valve means is controlled by actuating at least two electrical switching means. Upon actuation of the electrical switching means, the electrically operated valve means operates and the urine discharges from the urine collection bag through the drain tube.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: March 14, 1995
    Assignee: Cleveland Medical Devices, Inc.
    Inventors: Robert N. Schmidt, Artie M. Dorsey