Situated Learning: Legitimate Peripheral Participation Cambridge University Press
Published on Jan 1, 1991
Hydraulic members connect two relatively movable parts exemplified by a pickup bed and a camper mounted thereon, said members being extensible and contractable in response to movement of the parts. A cylinder connected to one part cooperates with a piston axially movable in the cylinder and connected to the other part. Oppositely biased poppets are carried by the piston. One poppet, during piston movement in one direction, bypasses hydraulic fluid from one end of the cylinder to the other end, and the other poppet, during movement in the opposite direction, bypasses hydraulic fluid from said other end to the first mentioned end of the cylinder. Bias-regulating springs for each poppet are capable of being adjusted to regulate the bypass flow.