Normally-open and Normally-closed For instance, the following diagram shows a normally-open pushbutton switch controlling a lamp on a 120 volt AC circuit (the “hot” and “neutral” poles of the AC power source labeled L1 and L2, respectively): We can tell this switch is a normally-open...
A retaining mechanism is releasably held to resist stop movement and so prevent valve disc opening but is operable under a predetermined condition to permit stop movement from said one position to a second position. When the stop is in the second position, unequal pressure forces on either side...
aThese devices are called sprinkler heads. The sprinkler heads are normally closed by a disk or cap. This cap is held in place by a heat sensitive releasing element. 这些设备称洒水喷头。 洒水喷头由盘或盖帽通常关闭。 这个盖帽由热敏感发布的元素拿着到位。[translate]...
The pistol is provided with a valve (4) activated by a lever (3) normally held closed by a spring (5). The lever can be held open by a catch (9) activated by an electric motor. In the tube which is submerged in the barrel to be filled is an internally welded tube (6) which ...
Device making it possible to actuate the mechanism of a security or anti-theft system normally held in closed position, exhibiting the form of a disc or "token" (1) the dimensions of which are such that it can be inserted inside a corresponding slot arranged at the entry of the security ...
Device making it possible to actuate the mechanism of a security or anti-theft system normally held in closed position, exhibiting the form of a disc or "token" (1) the dimensions of which are such that it can be inserted inside a corresponding slot arranged at the entry of the security ...
Push button switch normally closed having contact carriers isolating material held and conductor strip forming contact/button activated with carriers released when button pushed.The electrical switch (10) has a lower section (12) with contact carriers (30A,30B) in an isolating material. There is a...