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2. Cooper vane - Wikipedia

   en.wikipedia.org/wiki/Cooper_vane

   The Cooper vane is a very simple device: It consists of a spring-loaded paddle connected to a plate that prevents the ventral airstair of an aircraft from being lowered in flight. [1] When the aircraft is on the ramp, the spring keeps the paddle perpendicular to the fuselage, and the attached plate does not block the stairway. As the aircraft ...

3. Railroad switch - Wikipedia

   en.wikipedia.org/wiki/Railroad_switch

   A right-hand railroad switch with point indicator pointing to right Animated diagram of a right-hand railroad switch. Rail track A divides into two: track B (the straight track) and track C (the diverging track); note that the green line represents direction of travel only, the black lines represent fixed portions of track, and the red lines depict the moving components.

4. Cam switch - Wikipedia

   en.wikipedia.org/wiki/Cam_switch

   • Switch setting independent of other switches in stack • Switching angles cane be set and locked in seconds • Adjustments can be made while shaft is either stationary or rotating • Only 1-1/16" diameter; equivalent of BuOrd Size 11. The PMC Model CS 402 Cam Switch combines in a compact 1-1/16" diameter unit all the functions of a ...

5. Switch - Wikipedia

   en.wikipedia.org/wiki/Switch

   A switch normally maintains its set position once operated. A biased switch contains a mechanism that springs it into another position when released by an operator. The momentary push-button switch is a type of biased switch. The most common type is a "push-to-make" (or normally-open or NO) switch, which makes contact when the button is pressed ...

6. Spring-loaded camming device - Wikipedia

   en.wikipedia.org/wiki/Spring-loaded_camming_device

   A spring-loaded camming device (also SLCD, cam or friend) is a piece of rock climbing or mountaineering protection equipment. It consists of two, three, or four cams mounted on a common axle or two adjacent axles, so that pulling on the axle forces the cams to spread further apart.

7. PMN mine - Wikipedia

   en.wikipedia.org/wiki/PMN_mine

   The PMN-1 has a bakelite case (brown or black in colour) with a black rubber pressure-plate and contains TNT explosive. The PMN-1 mine is armed by removing a steel ring-pull at the end of the horizontal fuze. When in position, the pin on the end of the ring-pull holds a spring-loaded striker back from the stab-detonator.

8. Buffer (rail transport) - Wikipedia

   en.wikipedia.org/wiki/Buffer_(rail_transport)

   The first ones consisted of a steel rod that carried the buffer plate at one end. The buffer rod pushed backwards on a spiral volute spring (coil spring), which was supported by a strong sheet metal cylindrical sleeve. Compressing the spring absorbed the impact. The first spring-loaded buffers were invented by John Baillie in 1846. [3]

9. Miniature snap-action switch - Wikipedia

   en.wikipedia.org/wiki/Miniature_snap-action_switch

   Even though the flat spring unflexes as it moves downward, the switch is designed so the net effect is acceleration. This "over-center" action produces a very distinctive clicking sound and a very crisp feel. In the actuated position the curved spring provides some upward force. If the actuator is released this will move the flat spring upward.