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US 2013/0199813 A1Published application
Hydraulic Hammer
AssigneeGlobal Piling Solutions, L.L.C.
InventorsRobert James Zimmerman, Bryce Everett Huff, Kurt N. Winters
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AssigneeGlobal Piling Solutions, L.L.C.
InventorsRobert James Zimmerman, Bryce Everett Huff, Kurt N. Winters
Estimating the term…
A piston cylinder is formed inside a ram and is fitted with a piston attached to a stationary hollow piston rod, creating a upper piston chamber for receiving pressurized hydraulic fluid, which causes the ram to rise as the volume of the upper piston chamber is expanded due to the hydraulic pressure and increasing volume of hydraulic fluid. When the ram reaches predetermined desired height, hydraulic pressure is released by opening a directional valve, allowing the ram to drop. A lower piston chamber is sealed and filled with gas. A moveable shuttle member that reciprocates up and down inside a hollow piston rod in response to the changing volume of the lower piston cylinder, facilitating the evacuation of hydraulic fluid from the upper piston chamber. An alternative embodiment uses a single fluid and has no shuttle member.
A hydraulic hammer comprising a ram and a piston cylinder formed inside said ram, a piston seated in said cylinder, with said piston fixed to a lower end of a connecting rod with an upper end of said connecting rod fixed to a support member above said ram and hydraulic means operatively connected to said ram for moving said ram between a first position and a second position.
A hydraulic hammer comprising;
A hydraulic hammer comprising;
Dependencies are inferred from the claim text.