Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7421894 | Sensors and associated methods, including surface condition sensors An embodiment of the present invention provides a surface sensor system comprising a wet/dry sensor assembly, an electrically isolated passive sensor assembly, a thermally adjustable active sensor assembly, at least one temperature sensor, and a data processing devi... | 09/09/2008 |
| 7340949 | Precipitation measurement device A precipitation measurement device measures a precipitation rate of falling precipitation. A first probe is exposed to the falling precipitation. A first temperature sensor detects a first probe temperature. A second probe is shielded from the falling precipitation.... | 03/11/2008 |
| 7313946 | Moisture detector A moisture detector of closed case type according to a heat capacity method is realized by a relatively simple constitution. The moisture detector includes a first temperature sensor for sensing temperature of a detection target; a second temperature sensor for sens... | 01/01/2008 |
| 7280047 | Real-time electronic spray deposition sensor An electronic spray deposition sensor for sensing deposition of liquid on an exterior surface is disclosed. The deposition sensor has a sensing surface comprising a plurality of electrically conductive elements disposed across the sensing surface. The conductive ele... | 10/09/2007 |
| 7114389 | Rain sensor arrangement Rain sensor arrangement for an operator for a window, said window comprising a frame, a sash pivotable with respect to said frame, and a pane mounted in said sash. The operator is adapted for pivoting said sash between a closed and an open position and vice versa, a... | 10/03/2006 |
| 6900733 | Rain sensor, particular for a motor vehicle and method for mounting a rain sensor A rain sensor and a method for installing a rain sensor are provided for a motor vehicle. The rain sensor includes a housing in which at least one printed circuit board is located and which has a light-conducting member, which at least partially closes the housing i... | 05/31/2005 |
| 5744711 | Winter precipitation measuring system A winter precipitation measuring system for quantifying the precipitation rate of winter precipitation at a given point on the Earth's surface. The winter precipitation measuring system includes an elongated tube, a thermal plate within the elongated tube... | 04/28/1998 |
| 5533391 | Electric rain sensor and method of manufacturing a sensor member thereto An electrical rain sensor to be mounted on the outside of a main frame of an openable window, particularly a skylight, comprising a sensing element with two electrodes mounted opposite one another in an insulating holder, the distance between the electrod... | 07/09/1996 |
| 5440483 | Process and device for evaluating the precipitations over an area of terrain Automatic rain gauges (P00-P0n) are employed within the area of terrain (ZT). A meteorological radar (R1) provides, with a given radar periodicity, a radar image representing rain-bearing cells of concern to the area of terrain. By analyzing the successio... | 08/08/1995 |
| 5284052 | Moisture gauge A rain gauge for collecting and measuring precipitation and capable of measuring the amount of collected precipitation that has evaporated. The rain gauge is also capable of measuring precipitation during an interim period of time without discharging the ... | 02/08/1994 |
| 4895022 | Arrangement in precipitation gauges The invention relates to an arrangement in precipitation gauges of the type comprising a transducer tube having an inlet opening (2) at the top. In association with the inlet opening (2) of the tube (1), there is provided a collar or disc (3) extending tr... | 01/23/1990 |
| 4893506 | Method for estimating rainfall and a sensing device therefor An apparatus and method for estimating rainfall. A rainfall sensing device is used to generate rain signal Vo; when it is raining (Vo=1), a number of consecutive sampled rain signals are picked up within a given period of time. The conditions (shower, hea... | 01/16/1990 |
| 4884440 | Process for the elimination of noise from data A process for eliminating noise from an actual data stream, and plotting the actual data stream with a superimposed set of interpolated data values is disclosed. The set of interpolated data values represent an estimate of the actual data stream which is ... | 12/05/1989 |
| 4799379 | Apparatus for measuring the moisture content of snow particles An apparatus for measuring the moisture content of falling snow has a sheet of water-absorbing material containing a material which generates a color upon having water added thereto and which is movable from a snow receiving position to a first observatio... | 01/24/1989 |
| 4583399 | Precipitation gauge A precipitation gauge in which precipitation is absorbed by a suitable material having two pairs of grids also disposed therein to form two capacitances. An ac signal is applied to the grids to measure the impedance between the grids and hence the volume ... | 04/22/1986 |
| 4499761 | Snow scale/rate meter A snow scale/rate meter having a highly accurate weight sensing device enclosed in a thermally controlled environment. A clear plastic collection bucket is operably connected by means of an elongated shaft to the weight sensing device. In addition, a plur... | 02/19/1985 |
| 4305280 | Rainfall intensity sensor An instrument having a logarithmic response is provided which continuously easures rates of rainfall over a range of from 0.3 to 350 mm/hr by determining the electrical power required to evaporate the water as it arrives on an exposed sensor. The sensor de... | 12/15/1981 |
| 4140011 | Automatic precipitation sampler An automatic precipitation sampler contains a precipitation detector which signals a control system to remove a cover above the collector surface at initiation of precipitation. Water flows from the inert collector surface, through a sample distributor ha... | 02/20/1979 |
