Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 4426884 | Flexible force sensor The flexible force sensor having an electrical conductor releasably attachable to a test site and a plurality of relatively spaced electrical contacts supported for varying contact with the conductor such that when a force is applied to the force sensor, ... | 01/24/1984 |
| 4419653 | Variable resistance switch Variable resistance switch of a continuously-variable resistance pressure-dependent measurement sensor for triggering a switching operation of an electrical evaluating circuit through a compressive loading, including an elastic layer being formed of elast... | 12/06/1983 |
| 4410872 | Electrical thick-film, free-standing, self-supporting structure, and method of its manufacture, particularly for sensors used with internal combustion engines A free-standing, self-supporting layer of glass-ceramic or crystallized glass is applied by thick-film technology over a presintered layer made of a vaporizable or etchable material which, after sintering the thick-film glass-ceramic or crystallized glass... | 10/18/1983 |
| 4374374 | Electric contact device An electric contact or circuit breaker device comprises a base member and an operating member. In a surface of the base member, there is provided at least one elongated indentation wherein an electric conductor is inserted and is without electrical connec... | 02/15/1983 |
| 4357266 | Flexible resistor compositions The invention provides a novel composition capable of giving an electrically conductive, flexible shaped body having stability in the applied voltage vs. current performance. The composition comprises an electrically insulating polymeric material having f... | 11/02/1982 |
| 4333068 | Position transducer A sealed position transducer which is self-wiping and which is readily adaptable for providing both linear and nonlinear electrical outputs. The transducer includes a housing, a resistive element received in the housing, and a flexible membrane, having a ... | 06/01/1982 |
| 4328441 | Output circuit for piezoelectric polymer pressure sensor A pressure sensitive apparatus for producing electrical signals on two electrodes having a layered structure consisting of a conductive layer, a piezoelectric polymer film layer, an electrode layer, an insulating layer, another electrode layer, another pi... | 05/04/1982 |
| 4322983 | Method for generating electric signals and a push-button switch means therefor The invention provides a novel push-button switching means for producing an electric signal free from the problems of chattering or bouncing unavoidable in the conventional switches relying on the principle of mechanical contacting and coming apart of the... | 04/06/1982 |
| 4315238 | Bounceless switch apparatus 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 conductor... | 02/09/1982 |
| 4314227 | Electronic pressure sensitive transducer apparatus 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 conductor... | 02/02/1982 |
| 4314228 | Pressure transducer A pressure transducer device particularly useful in an electronic musical instrument includes a flexible base folded to define upper and lower flexible base portions, a donut-shaped first spacer between the upper and lower base portions and a resiliently ... | 02/02/1982 |
| 4305321 | Electrical control devices A potentiometer comprises a support member having first and second support regions and an intermediate region located therebetween, a resistive member supported on the support member at the first support region thereof and having a longitudinal dimension ... | 12/15/1981 |
| 4302361 | Pressure sensitive conductor A pressure sensitive conductor consists essentially of (I) an electrically insulating rubber (excluding addition reaction type liquid silicone rubber), (II) 25 to 50% by volume of electrically conductive metal particles (preferably 40 to 200μ in particle... | 11/24/1981 |
| 4292261 | Pressure sensitive conductor and method of manufacturing the same A pressure sensitive conductor comprising an elastomer containing from 3 to 40% by volume of electrically conductive magnetic particles, which particles are dispersed in the elastomer so that high-sensitivity pressure sensitive conductor portions and insu... | 09/29/1981 |
| 4279188 | Acoustic coupling free electric drum Faithful replication of a drummer's hits on an electric drum, free of cogeneration of spurious signals by acoustic coupling of the drum pick-up with extraneous energy sources such as nearby musical instruments is achieved by employing as the drum hit pick... | 07/21/1981 |
| 4273682 | Pressure-sensitive electrically conductive elastomeric composition Disclosed is a pressure-sensitive, electrically conductive elastomeric composition comprising a substrate composed of an organic flexible material and electrically conductive particles consisting of angle-chipped, roundish pebble-like particles of artific... | 06/16/1981 |
| 4268815 | Multi-function touch switch apparatus A multi-function touch switch apparatus has a first semiconductor composition layer disposed on top of a first conductor layer which is affixed to a first base member. A second semiconductor composition layer opposing the first semiconductor in spaced rel... | 05/19/1981 |
| 4258100 | Pressure-sensitive electric conductive sheet material Pressure-sensitive electric conductive sheet material is provided, which comprises at least one layer of a rubbery elastic material wherein are substantially uniformly distributed fine particles of electric conductive metal.... | 03/24/1981 |
| 4257305 | Pressure sensitive controller for electronic musical instruments An electronic musical instrument incorporates one or more pressure sensitive push-button controllers actuable independent of the keys or other note selecting elements of the instrument to vary a corresponding number of musical parameters. The specific con... | 03/24/1981 |
| 4252391 | Anisotropically pressure-sensitive electroconductive composite sheets and method for the preparation thereof Anisotropically pressure-sensitive electroconductive composite sheets are provided which have a very low electric conductive resistance in the direction perpendicular to the plane of the sheet when compressed with an adequate pressure in the direction but... | 02/24/1981 |
| 4228815 | Measurement and control of multicomponent liquid systems The method is based on the fact that the particular components are conveyed through separate pipes into a mixing chamber. By measuring the transit time in at least one of the pipes the flowrate can be measured. The flow in the other pipes which is in a fi... | 10/21/1980 |
| 4210895 | Pressure sensitive resistor elements Pressure sensitive resistor elements are provided which serve as an on-off switching device and comprise an anisotropically electroconductive sheet which is formed of an insulating rubbery elastomer as a matrix within which many electroconductive fibers a... | 07/01/1980 |
| 4208648 | Sensor panel for locating a load A sensor panel for sensing the location and/or shape of a load superimposed on one face of the panel includes a plate consisting essentially of an electrically conductive material varying in electric conductivity in response to a pressure applied in the d... | 06/17/1980 |
| 4203088 | Pressure-sensitive multiple resistor elements A pressure sensitive multiple resistor element is proposed whereby two or more variations of resistance can be obtained simultaneously by applying a single compressive force. It comprises an anisotropically electroconductive composite sheet exhibiting var... | 05/13/1980 |
| 4172216 | Pressure sensitive switch A resilient insulative layer of a plastic foam material is sandwiched between a dimpled carbon powder loaded plastic sheet and a resilient carbon powder loaded plastic foam pad. The dimples extend part way through holes provided therefor in the insulative... | 10/23/1979 |
| 4163204 | Pressure-sensitive resistors 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 ... | 07/31/1979 |
| 4152304 | Pressure-sensitive flexible resistors Pressure-sensitive flexible resistors comprising an elastomeric material containing a controlled resistive element or material are prepared by impregnating an elastomeric material such as a rubber with a semiconducting carbonaceous pyropolymeric inorganic... | 05/01/1979 |
| 4145317 | Pressure-sensitive resistance elements An improved pressure-sensitive resistance element is provided which is composed of an electrically non-conductive matrix of a rubbery elastomer and electrically conductive particles dispersed therethrough to have a gradient of distribution from one side t... | 03/20/1979 |
| 4114134 | Potentiometer A potentiometer includes a conductive member and a resistive member both enclosed in a flexible fluid-filled bag so that depression of a point on the bag causes the conductive member to touch a point on the resistive member. Latching means are provided to... | 09/12/1978 |
| 4079269 | Switch means for cameras A switch means for electrically operating a device in a photographic camera is composed of a mechanical switch and a semiconductor switching element connected with the mechanical switch. The mechanical switch has a pair of contacts made of resilient condu... | 03/14/1978 |
| 4067945 | Method of making a multi-circuit electrical interconnector A method of making a multi-circuit electrical interconnector comprises the molding of an elastomeric, non-conductive frame member having a number of openings extending therethrough corresponding to the number of circuits that are to be interconnected. Eac... | 01/10/1978 |
| 4054540 | Pressure sensitive resistance and process of making same A pressure sensitive resistance material and process for making the same is described which is of the type comprising an elastomeric matrix with conducting metal particles dispersed therein. Improved performance and improved ranges of conductivity between... | 10/18/1977 |
| 4050756 | Conductive elastomer connector and method of making same An electrical connector in which conductive rubber rods are mounted in a nonconductive substrate. The rods extend above and below the upper and lower surfaces, respectively, of the substrate for electrically interconnecting conductive traces on a pair of ... | 09/27/1977 |
| 4034265 | Electric motor protector Apparatus for protecting the armature of an electric motor against excessive temperatures comprises a resiliently compressible and expansible pad in the armature circuit and composed of thermally sensitive, non-conductive material containing a plurality o... | 07/05/1977 |
| 4014217 | Tactile pick-up The invention relates to a tactile pick-up for making contact with an object and emitting signals which are representative of the deformation caused by the object. The pick-up comprises a supple layer of variable electrical conductivity as a function of i... | 03/29/1977 |
| 3982219 | Digital pressure/range transducer A digital pressure/range transducer is disclosed. The transducer transforms n applied force into a mechanical movement which in turn closes a plurality of switches in ordered sequence. The number of switches closed gives a measure of the applied force. The... | 09/21/1976 |
| 3974470 | Multi-stage switching apparatus 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 un... | 08/10/1976 |
| 3960044 | Keyboard arrangement having after-control signal detecting sensor in electronic musical instrument A keyboard arrangement having an after-control signal detecting sensor means connected to electric circuitry to use the signal generated by this sensor means as an after-control signal for controlling various musical effects. This sensor means comprises a... | 06/01/1976 |
