Matra

About: Matra is a based out in . It is known for research contribution in the topics: Signal & Detector. The organization has 1330 authors who have published 1216 publications receiving 17967 citations.

Firearm percussion device for firing cartridges of two different calibres

Abstract: The invention relates to a percussion device making it possible to adapt to two munitions of different calibres, of which one has central percussion and the other annular percussion. According to the invention, the device comprises: - a cylindrical seat (7) mounted rotatably in the body (1) of the firearm; - a striker (11) which can slide in a stepped recess of the cylindrical seat (7) and the axis (13) of which is parallel to the axis of rotation (9) of the cylindrical seat, but offset in relation to this; - a transverse stop pin (16) which is mounted in the cylindrical seat (7) and against which the striker (11) bears by means of a spring (17); - a locking member mounted transversely in the body and capable of locking the cylindrical seat (7) in either one of the two positions of the latter. The invention is used particularly for percussion devices on revolvers and pistols with an interchangeable barrel.

Un Stereorestituteur Analytique : Le Traster 77

Abstract: The fundamental characteristics of analytical stereoplotters compared to the analog stereoplotters is their facility to use them and the versatility given by the on-line of a mini-computer. Analog stereoplotters, even those classified universal, are generally designed at the beginning for cartographic plotting from aerial photographies. Few of them have the capability to be used in non cartographic field such as biostereometrics applications. Analytical stereoplotters are usable in all kind of restitution, monoculary or stereoscopically. The main particularity of TRASTER, the analytical stereoplotter built by Matra, is its stereo viewing system obtained by an optical projection in polarized light of the photographies in place of the conventionnal binocular system. This feature increases the operator comfort, gives a better facility of the stereophoto-grammetry adaptation to not confirmed operators and allows the stereo view by several people in the same time. Thanks to the incorporated computer, specific softwares can be easily adapted to Traster. Restitution of stereopairs are possible in on-line mode on the drafting table. Three dimensional coordinates of objects to be plotted can be stored in numerical form for further processing.© (1980) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Tyre deflation detector for a guiding trolley

Abstract: not available for EP0078751Abstract of corresponding document: US4588977A transportation vehicle for a transit system has a supporting structure provided with wheels moving on parallel tracks and inflated tires in rolling contact with stationary guide bars for guiding the structure. An apparatus for providing an indication of deflated or flat rubber tire is provided on the roadway. It detects lateral offset of the support structure with respect to the tracks from a set position responsive to deflation of one tire. The sensors are connected to a circuit which provides an alarm when the amount of offset exceeds a predetermined value.