| 摘要 |
<p>A hydraulic buffer especially suitable for heavy duty uses has a minimum number of rugged parts including a metering orifice cylinder closed at one end and enclosed within a housing providing a hydraulic fluid reservoir, with a piston reciprocable in fluid displacing relation within the cylinder and having a hollow piston within which is received a coil spring seated on the cylinder end closure and normally biasing the piston and rod into protracted relation relative to the housing to receive force to be damped against the head of the piston rod. A piston ring serves as a check valve controlling displacement ports through the piston.</p> |
