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  2. Jack (device) - Wikipedia

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

    A hydraulic jack uses hydraulic power. [1] The most common form is a car jack, floor jack or garage jack, which lifts vehicles so that maintenance can be performed. Jacks are usually rated for a maximum lifting capacity (for example, 1.5 tons or 3 tons). Industrial jacks can be rated for many tons of load.

  3. House raising - Wikipedia

    en.wikipedia.org/wiki/House_raising

    House raising (also called house lifting, house jacking, barn jacking, building jacking) is the process of separating a building from its foundation and temporarily raising it with hydraulic screw jacks. The process is the first step in structure relocation in which the building is moved to a different location. [1]

  4. Denison Hydraulics - Wikipedia

    en.wikipedia.org/wiki/Denison_Hydraulics

    Denison Hydraulics is a publicly traded U.S.-based company (Stock Symbol:DENHY) that manufactures industrial hydraulic fluid power systems (hydraulic pumps, motors, valves and engineered systems [1]) and components and is headquartered in Marysville, Ohio. Denison is owned by Parker Hannifin.

  5. Eastern span replacement of the San Francisco–Oakland Bay ...

    en.wikipedia.org/wiki/Eastern_span_replacement_of...

    Jack and tension 26 of 50 suspender groups on each side (8 at a time in the first 3 steps, 2 in the fourth step), followed then final adjustments (steps 5–18). In the first 8 steps, 80% of the load was transferred from the temporary truss to the cable. 2: Jack and tension 3 more suspender groups, bringing the total to 29 of 50 on each side. 3

  6. Hydraulic machinery - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_machinery

    The hydraulic fluid reservoir holds excess hydraulic fluid to accommodate volume changes from: cylinder extension and contraction, temperature driven expansion and contraction, and leaks. The reservoir is also designed to aid in separation of air from the fluid and also work as a heat accumulator to cover losses in the system when peak power is ...

  7. Richard Dudgeon - Wikipedia

    en.wikipedia.org/wiki/Richard_Dudgeon

    Richard Dudgeon (1819, Tain – 9 April 1895, New York City) [1] was a mechanic, noted for his inventions of the hydraulic jack and steam carriage. Born in Scotland, [ 2 ] he emigrated as a boy with his family to the United States , where he became a mechanic in New York.