| 摘要 |
<p>CUSHIONING DEVICE FOR A HYDRAULIC JACK A cushioning device, for cushioning the impact between a closed end portion of a cylindrical member of a hydraulic jack and an end portion of an inner member reciprocable within the cylindrical member, including a blind bore provided in one of the end portions, an elongated plunger attached to the other end portion for telescopic entrance into the blind bore as the end portions approach each other and an orifice for metering fluid forced from the blind bore by the progressive ingress of the plunger into the bore.</p> |
