PISTON-AND-CYLINDER ARRANGEMENT WITH RADIALLY-YIELDABLE PISTON HEAD.

摘要

a combination of piston and cylinder (101) comprises a piston head (104) is balanced by pressure, and mounted on a drive shaft (21). the piston head is mounted so as to move axially with the shaft and radially in relation thereto.the annular sealing rings (118, 119, 120) are arranged between the cylindrical surfaces (111, 112, 112, 115, 124, 128, 131) in front of the head and of the piston rod.this reduces the maximum interference due to the friction of the piston head radial movement relative to the stem, and the device has a longitudinal friction reduced by average maximum stroke of the piston.