Results 241 to 250 of about 516,133 (284)
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The Journal of the Acoustical Society of America, 1985
The present invention relates to shock absorber-actuators. The shock absorber-actuator is characterized essentially by the fact that it comprises at least one cylinder (101), a hollow rod (102) sliding in the cylinder (101), a gas chamber (153) delimited by a separating piston (141), and means (140, 156, 154) for positioning this piston between ...
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The present invention relates to shock absorber-actuators. The shock absorber-actuator is characterized essentially by the fact that it comprises at least one cylinder (101), a hollow rod (102) sliding in the cylinder (101), a gas chamber (153) delimited by a separating piston (141), and means (140, 156, 154) for positioning this piston between ...
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The Journal of the Acoustical Society of America, 1981
A shock absorbing subassembly, for use in an oil well drilling string above a drilling bit to absorb and reduce bit induced vibration and impact loads, wherein a shock absorber element is provided which includes at least one set of ring springs. The ring springs comprise alternating closed outer rings and closed inner rings with tapered contact ...
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A shock absorbing subassembly, for use in an oil well drilling string above a drilling bit to absorb and reduce bit induced vibration and impact loads, wherein a shock absorber element is provided which includes at least one set of ring springs. The ring springs comprise alternating closed outer rings and closed inner rings with tapered contact ...
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The Journal of the Acoustical Society of America, 1983
Richard G. Dressell, Robert J. Heidman
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Richard G. Dressell, Robert J. Heidman
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The Journal of the Acoustical Society of America, 1984
Naoto Fukushima +2 more
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Naoto Fukushima +2 more
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Additively manufactured negative stiffness structures for shock absorber applications
Mechanics of Advanced Materials and Structures, 2022Sara Bagassi +2 more
exaly