Patents Assigned to Advanced Micro-Matrix, Inc.
  • Patent number: 4874549
    Abstract: The invention relates to a pressure sensitive electro-conductive material which can be utilized as a pressure sensitive electro-conductive switch or as a variable resistor. The switch comprises two electrodes with a deformable pressure sensitive electro-conductive material sandwiched between the electrodes. The electro-conductive material comprises a deformable elastomeric material impregnated with a plurality of electro-conductive micro-agglomerates of unbound finely divided electro-conductive carbon particles enclosed by a matrix of the elastomeric material and finely divided electro-conductive carbon particles bound together by the elastomeric material.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: October 17, 1989
    Assignee: Advanced Micro-Matrix, Inc.
    Inventor: Michael Michalchik
  • Patent number: 4749878
    Abstract: A variable force push button is used as an input device for a control system. Specifically, a bi-directional storage device produces a command that is applied to an element to be controlled. A signal is generated having a characteristic representative of the force applied to the push button. A representation of the characteristic is integrated by the storage device. In addition to changing the characteristic by varying the force applied to the push button, the user can change the direction of the integration, thereby increasing and decreasing the value of the command. The push button comprises a pressure sensitive element sandwiched between electrically conductive contacts one of which is actuated by the user. The pressure sensitive element is constructed of conductive particles in an elastomeric matrix. Preferably, electrically conductive micro-agglomerates of unbound finely divided electro-conductive carbon particles having a maximum dimension of between about 0.
    Type: Grant
    Filed: November 6, 1986
    Date of Patent: June 7, 1988
    Assignee: Advanced Micro-Matrix, Inc.
    Inventors: Wayne E. Snyder, Michael Michalchik, Peter T. Cunningham
  • Patent number: 4745301
    Abstract: A pressure sensitive electro-conductive material which can be utilized as a pressure sensitive electro-conductive switch or as a variable resistor. The switch comprises two electrodes with a deformable pressure sensitive electro-conductive material sandwiched between the electrodes. The electro-conductive material comprises a deformable elastomeric material impregnated with a plurality of electro-conductive micro-agglomerates of unbound finely divided electro-conductive carbon particles enclosed by a matrix of the elastomeric material and finely divided electro-conductive carbon particles bound together by the elastomeric material.
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: May 17, 1988
    Assignee: Advanced Micro-Matrix, Inc.
    Inventor: Michael Michalchik