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2. Jack (device) - Wikipedia

   en.wikipedia.org/wiki/Jack_(device)

   Jackscrews are integral to the scissor jack, one of the simplest kinds of car jack still used. A scissor jack use the mechanical advantage of a leadscrew and 4-bar linkage to allow a human to lift a vehicle by manual force alone. They are inexpensive and are common in manufacturer-supplied breakdown kits. The jack shown at the left is made for ...

3. Jackscrew - Wikipedia

   en.wikipedia.org/wiki/Jackscrew

   After World War II, improvements to the grinding of hydraulic rams and the use of O ring seals reduced the price of low-cost hydraulic jacks and they became widespread for use with domestic cars. Screw jacks still remain for minimal-cost applications, such as the little-used tyre-changing jacks supplied with cars, or where their self-locking ...

4. Scissors mechanism - Wikipedia

   en.wikipedia.org/wiki/Scissors_mechanism

   This mechanism is used in devices such as lift tables and scissor lifts.Modern low-profile computer keyboards make an extensive use of it as well, installing each key on a scissor support to ensure their smooth vertical movement, allowing the use of a cheap and reliable rubber dome contact set, instead of expensive and complex array of mechanical switches.

5. Vehicle recovery - Wikipedia

   en.wikipedia.org/wiki/Vehicle_recovery

   To solve this problem, recovery operators often use air bags to at least start the lift of the casualty. A number of bags can be used and this spreads the load throughout the length of the vehicle. Only a low pressure is used, which means in the event a bag is punctured, it just gently deflates and does not explode.

6. Laboratory scissor jack - Wikipedia

   en.wikipedia.org/wiki/Laboratory_scissor_jack

   Manual laboratory scissor jack, or laboratory lifting platform for other laboratory equipments. Laboratory scissor jacks are lifting stages for beakers, flasks, water baths, stirrer, or other lab tools used to elevate equipment height to the user's needs, usually around 5 to 20 cm. It consists of metal pieces connected together in a scissor ...

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   mail.aol.com

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