In accordance with the present invention, a surface emitting laser includes a substrate, a first distributed feedback mirror formed on the substrate, and an active gain medium formed on the first mirror. The active gain medium includes at least one active, optically emitting layer and one barrier layer. A second distributed feedback mirror is formed on the active gain medium. The first and second ...

The present application relates to a key recognition device, of the type containing an electronic chip, particularly usable for motor vehicles provided with a coded anti-theft device. The recognition device consists of a box element comprising a transmitter for sending a first code detectable by the chip contained in the key, interacting with a signal receiver for detecting the presence of a secon...

This invention relates to a mechanical system applied to snowboards for the quick attachment of footwear and boots with multiple axial adjustment (in an angular direction with respect to the longitudinal axis of the board, known as the "stange angle", in the direction of the longitudinal inclination of the "lifting" plane supporting the boot, and finally in the direction of lateral inclination of ...

A chromatic dispersion compensation device is provided in the form of an etalon having first partially reflecting mirror providing an input and output port for porting a signal into and out of the etalon cavity. A second partially reflective mirror parallel to and spaced apart from the first mirror, being more reflective than the first mirror provides a monitoring port for monitoring energy within...

An intake manifold for a multicylinder internal combustion engine includes intake runners for conducting air or air and fuel to intake ports formed in the engine cylinder head and an EGR passage formed in the manifold and extending generally parallel to the crankshaft of the engine. Secondary EGR passages extend from the EGR supply passage to intake runners or intake ports, and a coolant passage f...

An electrode comprises a first catalytic component active at gas-phase reaction sites and a second catalytic component active at electrochemical reaction sites wherein each catalytic component is present either as a separate layer, or a single mixed layer or a combination of a separate layer and a single mixed layer. The electrode has an improved tolerance to poisons such as carbon monoxide and ca...

The flow measurement involves a measuring tube (4) contg. throttle and having two open ends, one of which is bent, which is placed in flow to measure pressure drop. The tube is positioned with its length axis lying in radial direction parallel with plane of pref. circular ventilation duct (1) inlet (1a1) so that bend end of tube faces and is near to the opening.

The spark is initially ignited by short high frequency pulse created by discharge from the charge condensator (4) and then prolonged by a lower voltage-condensator which is linked to first primary ignition system and charged up to high voltage using a high frequency oscillator (5). Prolonging of the spark is then carried out using the lower voltage from the oscillator which is supplied to another ...

The invention relates to an arrangement for the automatic adjustment of working height in various devices intended for growing and cultivation. It comprises a body 1 with attached tools 2, the height of which in relation to the surface of the soil has to be regulated, support wheels 4 attached in line with the body 1 for the purpose of moving the device, and drive members 5-8 for adjustment of the...

Carbonaceous insertion compounds and methods f or preparation are described wherein the compounds comprise a highly disordered, impurity free, hard pre-graphitic carbonaceous host. Carbonaceous insertion compounds can be prepared which have large reversible capacity for lithium yet low irreversible capacity and voltage hysteresis. Such insertion compounds can be prepared by simple pyrolysis of sui...