In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 8164472 | System and method for monitoring a jump landing area A jump safety system and method for monitoring a jump landing area is described. The system of examining a landing area associated with the jump includes a camera, a memory, a processor, an image processing module, and a light emitting output. The camera is position... | 04/24/2012 |
| 7898428 | Safety for mobile device users while driving A mobile device configured to have at least one function disabled when a speed of the mobile device exceeds a threshold. The mobile device includes an output component configured to provide a notification related to disabling the at least one function. The mobile de... | 03/01/2011 |
| 7317393 | Object tracking method and system with object identification and verification A system and method for tracking and controlling access to objects such as keys includes a lockable storage cabinet adapted to receive, store, and dispense objects within transparent security containers. A control computer is operably coupled to the cabinet. Informa... | 01/08/2008 |
| 7253610 | Self-powered bicycle signal output device and display apparatus using same A bicycle signal output device comprises a magnet structured to be mounted to one of a first part and a moving part of a bicycle, a coil structured to be mounted to the other one of the first part and the moving part of the bicycle, and a signal generating unit that... | 08/07/2007 |
| 7180425 | Drop detection device or abnormality detection device and portable apparatus equipped with said device The invention is aimed at preventing apparatus damage, loss of data, accidental firing of a firearm due to dropping or subjection to an impact, and other mishaps caused by accidental dropping or improper handling of the apparatus, firearm, etc. due to carelessness o... | 02/20/2007 |
| 7145461 | System and method for analyzing activity of a body The present invention comprises a system and method of operation for evaluating body activity relative to an environment. According to an exemplary embodiment, the system comprises a processor that is associable with a sensor for sensing dynamic and static accelerat... | 12/05/2006 |
| 7075446 | Method and apparatus for monitoring motor rotation speed The invention concerns a method for generating an alarm signal in a motor which comprises a rotor (50) whose actual rotation speed during operation lies in a normal zone (nSoll, TSoll), can deviate from that normal zone in the event of a fault, and is to be m... | 07/11/2006 |
| 6864796 | Systems within a communication device for evaluating movement of a body and methods of operating the same The present invention introduces systems, as well as methods of operating such systems, within a communication device for evaluating movement of a body relative to an environment. According to an exemplary embodiment, the system comprises a sensor and a processor. T... | 03/08/2005 |
| 6441745 | Golf club swing path, speed and grip pressure monitor The golf club has a head and a shaft. A three axis linear accelerometer is mounted on the shaft adjacent to the head. The axis of one accelerometer is in parallel alignment with an axis of the shaft. A circuit board is attached to the shaft and the accele... | 08/27/2002 |
| 6384733 | Temperature monitoring apparatus for microprocessor cooling devices A temperature monitoring apparatus for microprocessors, having a fan device for producing an air stream for cooling the microprocessor. The temperature of the microprocessor is sensed by means of a heat sensing resistor mounted in the area of the surface ... | 05/07/2002 |
| 6311328 | Apparatus and method for enlarging/reducing a video picture size A picture processing apparatus for picture-in-picture applications where the number of pixels n in the horizontal direction of an original picture, the number of pixels m in the vertical direction thereof, the number of pixels N in the horizontal directio... | 10/30/2001 |
| 6144314 | Selective call receiver with motion detector A wireless selective-call receiver makes use of detection or absence of any to-and-fro movement of the receiver indicating that the receiver has been left somewhere thereby improving the security function of the receiver. When a motion detector detects no... | 11/07/2000 |
| 6087934 | Velocity-discriminating cable motion transducer system A system for monitoring motion includes a cable-encoder combination to create an electrical signal indicating distance and a microprocessor monitoring system to provide time measurement in conjunction with distance information and to provide alarms whenev... | 07/11/2000 |
| 6087947 | Allergen detector system and method An allergen particle detecting apparatus has a sample area through which environmental air is directed. A light beam is directed through the air sample so that portions of the beam will be scattered if any particles are present in the path of the beam. A ... | 07/11/2000 |
| 6005485 | Arrangement for recognising the type of occupation of a vehicle seat An arrangement, having at least one motion sensor in the vehicle seat, detects with a high reliability whether or not the vehicle seat is occupied by a person. For this purpose, the sensor output signal is analyzed into multiple signal components by frequ... | 12/21/1999 |
| 5424714 | Hydroplaning detecting system A hydroplaning detecting system comprises wheel rotational speed detecting apparatus for detecting a wheel rotational speed of a wheel of a vehicle, reference pattern storage apparatus for previously storing a reference pattern of wheel rotational speed w... | 06/13/1995 |
| 5422824 | Computerized diagnostic system for microprocessor-based, portable machinery A computerized diagnostic system includes a microprocessor-based electronic controller which controls a portable machine. Electronic sensors provide raw, operating parameters to a RAM type memory of the controller. A locator locates predetermined RAM addr... | 06/06/1995 |
| 5341129 | Zero-motion detection proximity switch An apparatus for detecting of the loss of motion in a transporting system regardless of the position in which the system stops. The apparatus incorporates one or more detection switches coupled with two timers operating in series or parallel and determine... | 08/23/1994 |
| 5319352 | Speed monitoring of in-plant, operator controlled vehicles The speed of in-plant vehicles such as forklift trucks and the like is monitored to provide for the lighting of a warning light where a first speed threshold is reached, the sounding of a horn when a second speed is reached, and for the disabling of the v... | 06/07/1994 |
| 5140305 | Speed sensor failure detection method and apparatus for an overspeed protection system An apparatus for detecting speed sensor failure in an overspeed protection device is disclosed. The apparatus comprises a plurality of tachometers having outputs for indicating the speed of rotation of a machine relative to plural setpoints. If the compar... | 08/18/1992 |
| 5132665 | Hub-mounted vehicle back-up alarm A self-powered back-up alarm for mounting to the wheel hub of a heavy truck or like vehicle. The alarm includes a housing adapted to be mounted to a vehicle wheel hub. Inside the housing is a magnetized stator that is held stable by a counterweight mounte... | 07/21/1992 |
| 5032821 | Motor vehicle stability monitoring and alarm system and method A stability monitoring and alarm system for a motor vehicle (e.g., a truck or a tractor trailer) provides an early warning to the driver of unsafe or potentially unsafe conditions. Front wheel desynchronization and rear load distribution are each monitore... | 07/16/1991 |
| 5008647 | Wireless bicycle wheel monitor system A wireless data display system has a receiver/display unit tuned to the same frequency as a sensor/transmitter unit for monitoring wheel rotation for a vehicle such as a bicycle. The two units are preferably battery powered, and their circuits are designe... | 04/16/1991 |
| 5003193 | Scan control circuit for hand-held type printer A scan control circuit for detecting a stable scanning movement of a hand-held type printer over a copy paper includes an encoder for producing pulses in response to the scan movement of the hand-held type printer. The pulses are applied to a stable scan ... | 03/26/1991 |
| 4982106 | Device for detecting at least one variable relating to the movement of a movable body A lever (6) is pushed by a cam profile (23) formed on an actuating member (9) fastened to a movable body (12), the movement of which is to be detected. A cam (13) fixed to the lever moves a plunger (16) which actuates a position switch (33). There is inte... | 01/01/1991 |
| 4953095 | Apparatus and method for measuring the frequency of a pulse signal An apparatus for measuring the frequency of a pulse train signal and method therefor applicable to a speedometer of a vehicle are disclosed in which a count value C of at least one counter which counts number of pulses in the pulse train signal for predet... | 08/28/1990 |
| 4876527 | Vehicle speed detecting device A vehicle speed detecting device utilizes two vehicle speed pulse generators, a vehicle speed memory device, pulse counters, abnormality detectors, pulse signal transfer devices and an alarm device which are all integrated into the electronic control circ... | 10/24/1989 |
| 4629980 | Testing limits of speed variations in motors Motor test circuit for supplying an error indication signal if the speed variations of a motor under test exceed predetermined limits. The circuit includes a frequency-to-voltage converter or other source of voltage proportional to the motor speed and a r... | 12/16/1986 |
| 4560928 | Velocity or distance measuring apparatus using magnetic dipoles A non-contact system suitable for measuring velocity/distance of an object travelling inside a ferromagnetic pipeline utilizes magnetic dipoles written into the pipe surface by a transmission coil. These dipoles can be detected by a magnetic detector situ... | 12/24/1985 |
| 4489305 | Monitor for hydraulic transmission A vehicle, such as an agricultural tractor, includes a hydraulic assist-type transmission with fluid control and lubricating circuits. A monitoring system senses the fluid pressure in the lubricating circuit, the hydraulic fluid temperature and the engine... | 12/18/1984 |
| 4489311 | Engine oil pressure monitor An engine oil pressure monitor includes an engine oil pressure sensor and an engine speed sensor. A plurality of pressure alarm values are generated to correspond to designated distinct ranges of engine speed. One of the alarm values is selected according... | 12/18/1984 |
| 4433746 | Vehicle speed control Apparatus for controlling speed of a vehicle having a retarder includes a receiver (1) for receiving signals from a transmitter (2) indicative of a reference speed and a processor (26) for comparing actual speed of the vehicle with the reference speed and... | 02/28/1984 |
| 4392122 | Magnetically triggered on-board elapsed time indicator A vehicle such as a speedboat or racing car is equipped with a magnetic sensing coil (22) for producing electrical signals in response to detection of magnets disposed at one or more positions along the course. In the case of buoy-mounted markers, the mag... | 07/05/1983 |
| 4380733 | Frequency and speed display device A device senses changes in a frequency or speed to be displayed. A display control circuit controls the time interval for updating the display, according to the magnitude of a sensed change in the frequency or speed, thereby avoiding flickering of the dis... | 04/19/1983 |
| 4371864 | Digital display device of vehicle use The digital display device of a vehicle is provided with a control facility for controlling other vehicle mounted electric equipment such as a warning device, an auto-door lock mechanism, or the like. The control is effected by using a control signal inte... | 02/01/1983 |
| 4365298 | Speed control systems for governing the speed of a vehicle A tachometer signal provides input to first and second parallel connected channels, each of the channels comprising in series operational amplifier, threshold detector, and counting devices. A comparator checks that the same count is registered by the cou... | 12/21/1982 |
| 4358757 | Seismic movement detector responsive in both vertical and horizontal planes A device for signalling seismic movements or the like, comprising a first pair of electric contacts, one of said contacts being vibratile relatively to a horizontal rest position and the other contact of said pair being adjustably spaceable from said rest... | 11/09/1982 |
| 4352062 | Digital display type tachometer for an automobile A digital display type tachometer for an automobile for numerically displaying a rotation speed of the engine comprises a numeric character display device having display sections for 1000's, 100's, 10's and 1's digits, the 1's digit display section being ... | 09/28/1982 |
| 4322712 | Elevator speed detecting apparatus An apparatus for detecting and controlling an elevator speed which includes a rotary disc rotated by a motor which moves an elevator cage and including a pulse generator which produces a pulse signal proportional to an elevator speed in cooperation with t... | 03/30/1982 |
| 4291295 | Vehicle speed enforcement signal In an on-board sensible signal that is activated by the speedometer of a vehicle when the vehicle speed exceeds a predetermined threshold and that remains activated when the speed is reduced below this threshold, the improvement consists of a combination ... | 09/22/1981 |