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US 4,825,960 AGranted
Synchronized hydraulic hammer arrangement
AssigneeMolex Incorporated
InventorJohn J. Krone
Life of this patent
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AssigneeMolex Incorporated
InventorJohn J. Krone
Estimating the term…
Hydraulic hammers are useful for transmitting high impact blows to a tool for fracturing hard material. When two hammers are used in combination the impact blows delivered to a common tool by the hammers should be synchronized for maximum effectiveness. The subject synchronized hydraulic hammer arrangement includes a valve arrangement for alternately directing pressurized fluid to a variable volume chamber in each of a pair of hydraulic hammers to simultaneously retract a piston of each hydraulic hammer against the bias of pressurized gas in a gas chamber of each hydraulic hammer and exhausting the variable volume hydraulic chambers in response to at least one of the pistons reaching a predetermined position. The gas chambers are interconnected for equalizing the gas pressure therein. This arrangement of components provides synchronized movement of the pistons in an outward direction so that they simultaneously impact against the common tool.
A synchronized hydraulic hammer arrangement comprising:
A synchronized hydraulic hammer arrangement comprising:
A synchronized hydraulic hammer arrangement of comprising:
Dependencies are inferred from the claim text.