Granular Patents (Class 338/100)
  • Patent number: 10175032
    Abstract: A personal protection apparatus includes a wearable covering, a reservoir supported on the wearable covering and containing a sprayable fluid and includes a valve operable to control the flow of fluid from the reservoir. The apparatus further includes a circuit having a force-sensing resistor for actuating the valve. The force-sensing resistor is disposed on a thumb covering and is activated under pressure when the wearer's thumb is positioned between the index finger and middle finger. Pressure on the force-sensing resistor decreased its resistance in the circuit. With the resistance lowered, current is allowed to flow and a power supply powers a servomotor coupled to a cam that opens a valve to allow fluid to be sprayed.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: January 8, 2019
    Inventor: Stephen Bradley Cooper
  • Patent number: 10176937
    Abstract: Electrical switches or sensors that comprise (a) a first electrical pole, (b) a layer of a variable resistance material in electrical contact with the first electrical pole, and (c) a second electrical pole that is in electrical contact with the variable resistance material and is not in electrical contact with the first pole, wherein the variable resistance material comprises at least one polymer having a glass transition temperature of no higher than about 10° C.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: January 8, 2019
    Inventors: John S Lettow, Terumi N McKenna, Dan F Scheffer
  • Patent number: 10114493
    Abstract: A highly configurable controller is described that includes a number of different types of control mechanisms that emulate a wide variety of conventional control mechanisms using pressure and location sensitive sensors that generate high-density control information which may be mapped to the controls of a wide variety of devices and software.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: October 30, 2018
    Assignee: BeBop Sensors, Inc.
    Inventors: Keith A. McMillen, Daniel Eric McAnulty
  • Patent number: 8362869
    Abstract: A thermistor based on a composition having the general formula (I): Re2-x-yCraMnbMcEyOz wherein Re is a rare earth metal or a mixture of two or more rare earth metals, M is a metal selected from the group consisting of nickel, cobalt, copper, magnesium and mixtures thereof, E is a metal selected from the group consisting of calcium, strontium, barium and mixtures thereof, x is the sum of a+b+c and is a number between 0.1 and 1, and the relative ratio of the molar fractions a, b and c is in an area bounded by points A, B, C and D in a ternary diagram, wherein point A is, if y<0.006, at (Cr=0.00, Mn=0.93+10?y, M=0.07?10?y), and, if y?0.006, at (Cr=0?00, Mn=0.99, M=0.01), point B is, if y<0.006, at (Cr=0.83, Mn=0.10+10?y, M=0.07?10?y), and, if y?0.006, at (Cr=0.83, Mn=0.16, M=0.01), point C is at (Cr=0.50, Mn=0.10, M=0.40) and point D is at (Cr=0.00, Mn=0.51, M=0.49), y is a number between 0 and 0.5?x, and z is a number between 2.5 and 3.5.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: January 29, 2013
    Assignee: Vishay Resistors Belgium BVBA
    Inventors: Véronique Poulain, Sophie Schuurman, André Lannoo, Frans F. Westendorp
  • Patent number: 7034651
    Abstract: Two sensor units are formed from magnetoresistive material. Elements of the first sensor unit have a total anisotropy field in a first direction. Elements of the second sensor unit have a total anisotropy field in a second direction. An integral coil sets a direction of magnetization in the elements of the first and second sensor units. An output of the first sensor unit is representative of magnetic field components perpendicular to the first direction and an output of the second sensor is representative of magnetic field components perpendicular to the second direction.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: April 25, 2006
    Assignee: Honeywell International Inc.
    Inventor: Michael J. Bohlinger
  • Publication number: 20040189437
    Abstract: A positive temperature coefficient thermistor has a non-heating portion which is not heated when a voltage is applied between first and second internal electrodes. The non-heating portion is provided in the approximate center of the positive temperature coefficient thermistor and is arranged to extend along a direction that is substantially perpendicular to a lamination direction of the positive temperature coefficient thermistor. The non-heating portion is arranged at least in the approximate center in the lamination direction of the portion of the laminate where the first and the second internal electrodes are arranged. Thus, a hot spot is reliably prevented from occurring inside the laminate when voltage is applied. As a result, the withstand voltage property is greatly improved. The non-heating portion may include a cavity provided in at least one thermistor layer or an opening or cut portion provided in the internal electrode.
    Type: Application
    Filed: March 16, 2004
    Publication date: September 30, 2004
    Applicant: Murata Manufacturing Co., Ltd
    Inventors: Kenjiro Mihara, Hideaki Niimi
  • Publication number: 20040080396
    Abstract: A high value resistor of the present invention has an active layer deposited over a semi-insulating substrate. Channel etch regions are defined within the active layer. Gate metal is deposited over each channel etch region. Ohmic contact material is deposited at opposing ends of the active layer to define connection regions. A second metal is deposited over the connection regions to form input/output pads. This resistor pattern presents significant increase in resistance in a given area without any additional processing or process steps.
    Type: Application
    Filed: October 29, 2002
    Publication date: April 29, 2004
    Inventor: Michael L. Frank
  • Publication number: 20030048171
    Abstract: An ultra wideband, frequency dependent attenuator apparatus for providing a loss which can be matched with a physically longer, given delay line, but yet which provides a much shorter time delay than the physically longer, given delay line with constant group delay. The apparatus is formed by an ordinary microstrip transmission line placed in series with an engineered lossy microstrip transmission line, with both transmission lines being placed on a substrate to effectively form a hybrid microstrip transmission line. The lossy transmission line includes resistive material placed along the opposing longitudinal edges thereof. In one embodiment, spaced apart metal tracks are formed along each strip of resistive material to provide the lossy microstrip transmission line with a desired loss characteristic.
    Type: Application
    Filed: September 7, 2001
    Publication date: March 13, 2003
    Inventor: Brian K. Kormanyos
  • Patent number: 6292338
    Abstract: An electric coupling device for connecting, disconnecting or limiting the current in an electric circuit. The electric coupling device includes a variable resistor. This resistance is variable between a very low value corresponding to a conducting state and a very high value corresponding to a substantially insulating state. Switching between the states takes place continually and in a very short time. The invention relates to an electric circuit provided with such an electric coupling device and a method performed in accordance with the function of the electric coupling device.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: September 18, 2001
    Assignee: ABB AB
    Inventors: Hans Bernhoff, Henrik Breder, Jan Isberg, Lars Jonsson, Lars Liljestrand, Stefan Valdemarsson
  • Patent number: 5302936
    Abstract: A pressure transducer includes a base ply, a resistance ply disposed on the base ply and at least two spaced apart contacts juxtaposed in relation to the resistance ply whereby at least one of the contacts may be pressed against the surface of the resistance ply. The resistance ply is made by spraying or silk screening a mixture of resin resistive to electrical conduction and a conductive particulate and then curing the composition to form a thin resistance ply having a surface with a multiplicity of micro-protrusions formed by the conductive particulate. The ratio of conductive particulate to resin is such that the mean distance between microprotrusions is greater than about five time the size of the conductive particles. The particles are in the range of about 0.5 to 10 microns and the resin layer is about is 0.4 to 0.8 microns thick.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: April 12, 1994
    Assignee: Interlink Electronics, Inc.
    Inventor: Stuart I. Yaniger
  • Patent number: 5296837
    Abstract: A pressure transducer includes a base ply, a resistance ply disposed on the base ply and at least two spaced apart conductors juxtaposed in relation to the resistance ply whereby at least one of the conductors may be pressed against the resistance ply. The resistance ply is made by spraying or silk screening a mixture of a continuous matrix conductive resin and a stannous oxide particulate and then curing the composition to form a solid resistance ply having a surface with a multiplicity of micro-protrusions formed by the stannous oxide particulate.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: March 22, 1994
    Assignee: Interlink Electronics, Inc.
    Inventor: Stuart I. Yaniger
  • Patent number: 5064995
    Abstract: A heating device including a body comprised of two or more strata of electrically conductive refractory particles, a supporting element of a refractory material between adjacent strata and an arrangement for passing an electrical current through the body.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: November 12, 1991
    Inventor: Miroslav Pesta
  • Patent number: 4611497
    Abstract: A transducer for responding electrically to forces and torques applied to the transducer including a force-variable impedance element engaged by force members which are retained in bearing relationship with the impedance element by an annular retainer and which transmit applied forces to the impedance element.
    Type: Grant
    Filed: November 2, 1984
    Date of Patent: September 16, 1986
    Assignee: Marker International
    Inventors: Walter Knabel, Gerd Klubitschko
  • Patent number: 4489302
    Abstract: A bounceless switch apparatus having a junction resistance which varies inversely with the pressure applied normally thereto which includes a first conductor member, a pressure-sensitive layer including a semiconducting material covering the first conductor member in intimate electrically conducting contact therewith and a second conductor member positioned in nonelectrically conducting relationship to the pressure-sensitive layer. The pressure-sensitive layer has a first surface with a multiplicity of microprotrusions of the semiconducting material which provide a multiplicity of surface contact locations. As the normally open switch is closed in response to a pressing force applied to urge the second conductor member and the first surface together, the physical contact between the microprotrusions and the second conductor increases thereby variably increasing conduction between the first conductor member and the second conductor member.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: December 18, 1984
    Inventor: Franklin N. Eventoff
  • Patent number: 4347505
    Abstract: A pressure sensing mat utilizes a thin sheet of semiconductor material that has an electrical conductivity generally invariable as to pressure applied to the mat material. The sheet of semiconductor material is sandwiched between sheets of copper, steel or aluminum foil which are in mechanical contact with the semiconductor sheet to define a pair of electrodes. The electrodes are connected to various circuits including a pressure (voltage) threshold detector, a learning circuit for establishing a learned threshold, a circuit for matching time-pressure patterns and a circuit for detecting pressures between a predetermined maximum and minimum level. A matrix of pressure sensing mats is utilized with various circuits to detect sequential pressure patterns.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: August 31, 1982
    Assignee: Antroy Enterprises, Inc.
    Inventor: Gary B. Anderson
  • Patent number: 4315238
    Abstract: A pressure responsive, variable resistance, analog switch has first and second conductors interleaved in spaced-apart relationship and disposed on a base member. An insulative spacer ring is positioned around and rises above the first and second conductors. A resilient cover sheet is attached to the top of the insulative spacer ring in spaced relationship over the conductors to define an enclosure between the resilient cover sheet and the base member. A pressure sensitive resistive conductor composition is disposed on the resilient cover sheet or on the conductors in the enclosure to interconnect a resistance between the first and second conductors when the resilient cover sheet is depressed against the conductors. The amount of resistance so interconnected varies inversely to the amount of pressure exerted.
    Type: Grant
    Filed: April 16, 1980
    Date of Patent: February 9, 1982
    Inventor: Franklin N. Eventoff
  • Patent number: 4314227
    Abstract: A pressure responsive, variable resistance, analog switch has first and second conductors interleaved in spaced-apart relationship and disposed on a base member. An insulative spacer ring is positioned around and rises above the first and second conductors. A resilient cover sheet is attached to the top of the insulative spacer ring in spaced relationship over the conductors to define an enclosure between the resilient cover sheet and the base member. A pressure sensitive resistive conductor composition is disposed on the resilient cover sheet or on the conductors in the enclosure to interconnect a resistance between the first and second conductors when the resilient cover sheet is depressed against the conductors. The amount of resistance so interconnected varies inversely to the amount of pressure exerted.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: February 2, 1982
    Inventor: Franklin N. Eventoff
  • Patent number: 4163204
    Abstract: The pressure-sensitive resistor comprising an electroconductive elastomer, in which an electroconductive particulate material is dispersed, two electrodes placed on the opposing surfaces of the elastomer, a means for providing a compressive force between the electrodes and a means for adjusting the compressive force, works on a novel principle that the elastomer composite exhibits a positive coefficient in the curve of compression vs. resistance relationship when the compressive force is varied in a region exceeding an inversion point at which the resistance of the elastomer as measured in the direction of compression is minimal. The coefficient in this positive region is smaller than in the ordinary negative region, so that the variable resistance of the resistor can be controlled very delicately together with the decreased contribution of the uncontrollable contact resistance.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: July 31, 1979
    Assignee: Shin-Etsu Polymer Co., Ltd.
    Inventors: Ryoichi Sado, Akio Nakamura, Naoki Kodama
  • Patent number: 4155062
    Abstract: A thermally sensitive switch has a thermally conductive body within which is a chamber into which extends at least one electrically conductive terminal. Occupying the chamber is an elastomeric body which is expansible and contractile in response to increases and decreases, respectively, in its temperature. The elastomeric body may be normally conductive or normally nonconductive, but in either event is conductive when in its expanded condition. When in its expanded, conductive condition, the body engages the terminal and is operable to establish a current path through the body to the terminal. The body may function as an on-off switch or as a rheostat, depending upon the composition of the body.
    Type: Grant
    Filed: September 22, 1977
    Date of Patent: May 15, 1979
    Assignee: Essex Group, Inc.
    Inventors: Gerald L. McClure, Dean C. Duhame
  • Patent number: 3974470
    Abstract: A multi-stage switching apparatus adapted to make and break an electrical circuit comprises a first compressible body having a resistance which varies inversely according to its state of compression and a second compressible body having a substantially uniform resistance lower than that of the first body, the two bodies being so arranged that the first body is compressed prior to compression of the second body in response to making of the circuit and is decompressed following decompression of the first body in response to breaking of the circuit.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: August 10, 1976
    Assignee: Essex International, Inc.
    Inventor: Gideon A. DuRocher