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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 7948612 | Measurement system A measurement system 1 for measuring a distance to an object to be measured, includes: a half mirror 10; a measurement light emitting unit 11; a projection unit 12; a light-receiving unit 13; a distance calculation unit 14; ... | 05/24/2011 |
| 7355724 | Three-dimensional measurement system The invention relates to a three-dimensional measurement system comprising a hardware part and a software part, in which the hardware part includes a mobile two-axis assembly (12) associated with a remote measurement device (13) installed on a fixed pa... | 04/08/2008 |
| 7336346 | Distance measuring device and method thereof A distance measuring device is provided that reduces the time required for a distance measurement without degrading accuracy of the measured value. The distance measuring device includes a reference signal oscillator (26) that generates a reference signal (K)... | 02/26/2008 |
| 7075626 | Laser distance measuring device The invention is based on a laser range finder that has a transmitter unit (10) with at least one laser, a receiver unit (12), and a single sideband modulation unit (14) that can use a first single sideband modulation frequency (ZF1) gene... | 07/11/2006 |
| 7023531 | Laser distance measuring device with phase delay measurement A laser distance measuring device (1) includes a laser diode (4) for emitting a high frequency intensity modulated measurement light beam (3) and connected with a signal generating unit (SGU) that generates a high frequency measurement signal ( | 04/04/2006 |
| 6586748 | Non-invasive water current measurement system and method A method and system are provided for measuring water current direction and magnitude. A plurality of beams of radiation are transmitted radially outward from a location above a body of water. Each beam is incident on the water's surface at an angle with r... | 07/01/2003 |
| 6369880 | Device for measuring distance using a semiconductor laser in the visible wavelength range according to the running time method A device for distance measurement using a semiconductor laser in the visible wavelength range, which functions according to the echo time method, includes a collimation objective for bundling the transmitted measuring beam bundle, a circuit arrangement fo... | 04/09/2002 |
| 5886777 | Electronic distance measuring device An electronic distance measuring device that measures a distance from the electronic distance measuring device to an objective station. The electronic distance measuring device includes a radiation source for emitting frequency-modulated radiation towards... | 03/23/1999 |
| 5880822 | Light wave distance measuring apparatus and method for determining distance of an object A light wave distance measuring apparatus includes a light-sending optical system and a light-receiving optical system, which are preferably arranged to be parallel to each other. Intensity-modulated light of the light-sending optical system is transforme... | 03/09/1999 |
| 5608514 | High range resolution ladar In a high range resolution ladar, a chirp signal waveform is propagated as a divergent laser light waveform and the target reflected return is collected and converted to a current proportional to power. An undelayed chirp signal is added in a mixer to the... | 03/04/1997 |
| 5241360 | Distance measuring device utilizing semiconductor laser A laser distance measuring device includes a semiconductor source, such as a laser diode, that produces a laser beam, preferably in the visible range. A driver selectively drives the semiconductor source at a minimum of two different driving frequencies. ... | 08/31/1993 |
| 4229102 | Method and apparatus for balancing out disturbances in distance measuring systems A method and apparatus are provided for balancing out interference caused by stray coupling between the internal circuits of a distance measuring apparatus of the phase-type in a simple manner which produces a substantial increase of the usable measuring ... | 10/21/1980 |
| 4113381 | Surveying instrument and method A tacheometer utilizes a gallium arsenide laser diode in a phase shifting distance encoder, a sinusoidal interpolator in a phase shifting shaft angle encoder, a mercury pool in a phase shifting two axis off-level encoder, a shared phase to digital decoder... | 09/12/1978 |
