Hydraulic hammer having improved seal ring
A hydraulic hammer having an improved seal ring contacting with a piston. The hydraulic hammer having a cylinder having an inner surface where a fluid groove connected to a passage for passing the fluid is formed, a piston installed in the cylinder to be elevated, and a first seal ring for guiding t...
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Main Author | |
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Format | Patent |
Language | English |
Published |
19.09.2000
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | A hydraulic hammer having an improved seal ring contacting with a piston. The hydraulic hammer having a cylinder having an inner surface where a fluid groove connected to a passage for passing the fluid is formed, a piston installed in the cylinder to be elevated, and a first seal ring for guiding the elevation of the piston, installed in an inner surface of the cylinder under the fluid groove and contacting with the piston, includes one or more second seal rings having one or more grooves or holes for passing the fluid, installed on the fluid groove and/or between the fluid groove and the first seal ring. Accordingly, the length of use before replacement of the seal ring installed between the piston and the cylinder can be extended, to thereby reduce the cost for operating the hydraulic hammer. |
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Bibliography: | Application Number: US19980095454 |