Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7372771 | Electronic distance measuring apparatus A portable and convenient electronic distance measuring apparatus using a laser beam and a supersonic wave is provided. A predetermined height is measured using a supersonic sensor and a laser pointer is rotated at the predetermined height to radiate a laser beam at... | 05/13/2008 |
| 7353137 | Shoe-based weight measuring system A shoe-based weight measuring system, comprising: a shoe; one or more weight sensitive detectors constructed and arranged with the shoe to sense weight of a person wearing the shoe and walking or standing; a processor for processing signals from the detectors to det... | 04/01/2008 |
| 7276669 | Payload overload control system A work machine may have a payload overload control system. The system may include a payload carrier and a lift mechanism configured to raise and lower the payload carrier. The system may further include a payload monitor configured to determine a payload in the payl... | 10/02/2007 |
| 7272893 | Rolling electronic length measuring device An electronic measuring device is disclosed which includes a pair of wheels connected to an axle that passes through a drive gear. The drive gear is enmeshed to a second gear which, in turn, is coaxially connected to an encoder disk. The encoder disk has spaced-apar... | 09/25/2007 |
| 7231722 | Lay out line A chalk line apparatus for marking regularly spaced locations. The apparatus comprises a casing for powdered chalk containing a rotatable reel, a wire rope wound on said reel, and an exit opening for the wire rope at one end of the holder. The wire rope is coated wi... | 06/19/2007 |
| 7193163 | Handheld electronic scale with background digital animation on display screen The hand held scale of the present invention comprises a rectangular casing with a weighing platform, for supporting items to be weighed, a display screen, for displaying the weight of the objects and to view the animation sequences. There are a series of digital an... | 03/20/2007 |
| 7194338 | Voltage collapse diagnostic and ATC system An analysis method for an electrical power system whereby the plurality of buses are grouped into agents, family lines of agents and families of agents based on the reactive reserves depleted when the buses are loaded. Contingencies are then applied to the electrica... | 03/20/2007 |
| 7127827 | Anatomical measuring display apparatus A method and apparatus is disclosed for calculating cup and band size for a brassiere comprising the steps of obtaining an under-the-bust measurement indicative of band size and a bust measurement indicative of cup size. If the under-the-bust measurement is even, th... | 10/31/2006 |
| 7086162 | Method and apparatus for distance measurement A device for measuring physical characteristics includes a beam generator component generating first and second beams at two points. The device further includes a protractor that measures the angle between the beams. The device measures the distances to the two poin... | 08/08/2006 |
| 6948252 | Light projecting goniometer This device is a handheld, battery-operated instrument that utilizes light beams to project visible lines for increasing the accuracy in determining angles. A linear potentiometer is incorporated at the pivot point between the two diodes and measures a voltage chang... | 09/27/2005 |
| 6904372 | Method of the identification of weak and/or strong nodes of an electric power system A method is disclosed for the identification of weak and/or strong nodes of an electric power transmission system. Electric parameters characterizing nodes and branches of an electric power transmission system are subject to computational treatment to obtain equatio... | 06/07/2005 |
| 6560560 | Apparatus and method for determining the distance between two points Measurement of respective distances to two remote points and measurement of the included angle, permit electronic calculation of the distance between the two remote points such as points on the opposed edges of an interior wall the length or other linear ... | 05/06/2003 |
| 6163266 | Fan operation detection circuit for a DC fan and method of operation thereof For use with a DC fan, a detection circuit and a method of detecting an operational condition thereof. In one embodiment, the detection circuit includes: (1) a sensor, coupled to the DC fan, that senses a current through the sensorless DC fan and produces... | 12/19/2000 |
| 5745368 | Method for voltage stability analysis of power systems A method for Voltage Stability Analysis of a bulk power supply system is taught. Briefly stated, a computationally efficient method is disclosed which is appropriate for low and high voltage applications as well as differing types of loads and load change... | 04/28/1998 |
| 5691923 | Digital measuring system A digital measuring device is provided for electronically determining measured distances, such as the dimensions of people or objects, as an integral part of a comprehensive system for manipulating and/or recording the measurement data. The digital measur... | 11/25/1997 |
| 5485410 | Measurement calculator A measurement calculator for storing and calculating measurement data comprising computer circuitry having central processing unit circuitry adapted for controlling the status of operations of the computer circuitry and manipulating measurement data there... | 01/16/1996 |
| 5457635 | Portable apparatus for determining cut positions in logs A portable tool (41) for determining diameters and lengths along fallen trees (stems). The tool (41) includes callipers (2,3) for measuring diameters at positions along the stem and a tape measure (5) for measuring distance along the stem. In use, spinnin... | 10/10/1995 |
| 5433122 | Method of measuring the length of winding material running onto a winding beam Method of measurement of the total length of a yarn formed winding material (3) running onto a wound package (1), in particular a yarn web running onto the winding beam of a winding machine. During continuous winding operation, the length is ascertained b... | 07/18/1995 |
| 5001658 | Pipe length tally system A system for use in measuring the lengths of individual pipes in a disassembled pipe string and automatically computing and recording the individual lengths and their cumulative total. The system 20 includes a measuring tape 21 on a spool 22 journalled fo... | 03/19/1991 |
| 4896280 | Electronic tape rule An electronic tape rule comprising a housing (6), a tape (1) that may be extended from the housing and which carries a position track (3, 4) therealong, a reading system (30, 31) in the housing past which the position track travels during movement of the ... | 01/23/1990 |
| 4779212 | Distance measuring device A distance-measuring device, comprises a housing; a flexible measuring tape reelable into and out of the housing for measuring lengths; a shaft encoder rotatable by the flexible-measuring tape when reeled into and out of the housing and outputting digital... | 10/18/1988 |
| 4586150 | Electronic measuring device A hand held device for taking measurements. The disclosed invention has particular utility for use in taking measurements for tailoring an article of clothing such as a suit. Two embodiments of the device are disclosed. One takes only length measurements ... | 04/29/1986 |
| 4535415 | Measurement conversion and visual display instrument A compact measuring instrument having an extensible measuring means connected to accurately input a signal to a potentiometer, that signal being representative of a distance over which the extensible measuring means has extended, a calculator logic circui... | 08/13/1985 |
| 4411008 | Method and apparatus for controlling tape transport apparatus in search sequence Method and apparatus for controlling tape movement to a given position by utilizing the combination of periodic determinations of tape position by calculation based on reel speed ratios, and monitoring positions represented by counts in a pulse count memo... | 10/18/1983 |
| 4282571 | Electronic distance measurement and displaying apparatus An electronic apparatus for measuring, computing, and displaying linear or angular displacements suited in particular to drafting applications. In display mode, the distance data is entered into the apparatus via a keypad and based on previously entered o... | 08/04/1981 |
| 4280159 | Method of and apparatus for indicating length and remaining recording capacity of a recording tape A method and apparatus for indicating the type, such as in terms of overall recording capacity, and remaining recording capacity of a recording tape. The tape is transported at a predetermined speed from a supply reel to a take-up reel. The rotations of t... | 07/21/1981 |
| 4233749 | Apparatus for measuring and marking preselected measurements Apparatus for marking preselected measurements on an object includes a device for receiving and storing data. A measurement device measures preselected distance on the object and registers the measured distance with the stored data. A marking device marks... | 11/18/1980 |
| 4232371 | Apparatus for indicating the amount of tape wound upon a reel Apparatus is provided for indicating the amount of tape wound upon a reel, such as a supply reel or a take-up reel, in a two-reel cartridge when the cartridge is loaded into a processing device of the type which includes a loading device for withdrawing f... | 11/04/1980 |
| 4213035 | Electronic combined protractor and calculator capable of measuring length and angle of an object An extensible tape member is provided for measuring a voluntary angle or for measuring length of an object. The extensible tape member may be pulled out of the housing of an electronic combined protractor and calculator in measuring either angle or length... | 07/15/1980 |
| 4195348 | Combined electronic digital scale and calculator storing selectable programs A selectable program unit is stored within a combined electronic digital scale and calculator. The selectable program unit includes three programs to obtain the area of a triangle or a circle, and the volume of a rectangular solid. Selection keys for sele... | 03/25/1980 |
| 4185390 | Electronic tape measure with comparison capabilities In an electronic tape measure wherein the results of measurements are visually displayed on a display through the use of a counter, there is provided a keyboard unit for introducing a specific quantity into the tape measure. It further includes alarm mean... | 01/29/1980 |
| 4181959 | Stored information transferable means for a combined electronic digital scale and calculator A plurality of memories are provided for respectively storing a series of distance information measured by extending the length of an extensible tape member which is attached to the length of an object to be measured. The memory is selected through the us... | 01/01/1980 |
| 4181960 | Tape reel and detector assembly for an electronic combined digital scale and calculator A spring loaded reel is provided for accommodating and storing an extensible tape member which is useful in identifying the length of an object to be measured while being pulled out of an electronic combined digital scale and calculator. A plurality of ho... | 01/01/1980 |
| 4181848 | Electronic digital scale with a memory An electronic digital read-out scale having an extensible tape member is disclosed having a memory designed to store first measurement information for calculation with the subsequent measurement information. A memory key is included within the scale funct... | 01/01/1980 |
| 4161781 | Digital tape rule In a measuring device such as a coilable tape rule, the movable elongated measuring element or blade is provided with a series of optical markings to indicate passage of distance. Photoelectric sensing means in the form of a pair of sensors carried by the... | 07/17/1979 |
