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2. Wheel chock - Wikipedia

   en.wikipedia.org/wiki/Wheel_chock

   Wheel chocks (or chocks) are wedges of sturdy material placed closely against a vehicle's wheels to prevent accidental movement. Chocks are placed for safety in addition to setting the brakes. The bottom surface is sometimes coated in rubber to enhance grip with the ground. For ease of removal, a rope may be tied to the chock or a set of two ...

3. Block (sailing) - Wikipedia

   en.wikipedia.org/wiki/Block_(sailing)

   In sailing, a block is a single or multiple pulley. One or a number of sheaves are enclosed in an assembly between cheeks or chocks. In use, a block is fixed to the end of a line, to a spar, or to a surface. A line (rope) is reeved through the sheaves, and maybe through one or more matching blocks at some far end, to make up a tackle.

4. Chock - Wikipedia

   en.wikipedia.org/wiki/Chock

   Wheel chock, tool to prevent accidental movement; Chock (climbing), anchor; Chock, component of a sailing block; Other uses. Chock (surname)

5. Overrun brake - Wikipedia

   en.wikipedia.org/wiki/Overrun_brake

   Therefore, the inertia of the trailer provides the force to apply the brakes. Some systems have a ball hitch that is normally straight, but when the lead vehicle starts braking, the trailer pushes forward on the ball hitch, pitching it up which then activates a variable hydraulic brake system. Upon activating the trailer slows down pulling back ...

6. Block and tackle - Wikipedia

   en.wikipedia.org/wiki/Block_and_tackle

   A block and tackle [1] [2] or only tackle [3] is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads.. The pulleys are assembled to form blocks and then blocks are paired so that one is fixed and one moves with the load.

7. Beadlock - Wikipedia

   en.wikipedia.org/wiki/Beadlock

   A standard beadlock is designed to clamp the tire bead between an outer and an inner ring. The inner ring may be welded onto a standard wheel increasing wheel width by anywhere from 1 + 1 ⁄ 2 to 2 inches (3.8 to 5.1 cm) or may be formed as part of the wheel when the wheel is made in the factory. The outer ring is then bolted onto the inner ...