Brakes – Internal-resistance motion retarder – Cylinder structure
Patent
1982-05-26
1985-04-02
Butler, Douglas C.
Brakes
Internal-resistance motion retarder
Cylinder structure
18832218, F16F 934, F16F 936
Patent
active
045082014
ABSTRACT:
In a cylinder piston device having an axis and two end walls, a cavity is defined between the two end walls. A piston rod is axially movable with respect to the cylinder member and passes through one of the end walls. The piston rod is at least partially defined by a piston rod tube. A piston unit is defined by a radially widened portion of the piston rod tube. The piston unit separates the cavity into two working chambers adjacent respective end walls, one of the working chambers being an annular working chamber radially extending between a radially outer surface of the piston rod and a radially inner surface of the cylinder member. Fluid passages extend between the working chambers across the piston unit. The fluid passages includes at least one opening extending through the piston rod tube.
REFERENCES:
patent: 2637414 (1953-05-01), Patriquin
patent: 2818942 (1958-01-01), Bliven
patent: 3621949 (1971-11-01), Watson
patent: 3633966 (1972-01-01), Epple et al.
patent: 3724615 (1973-04-01), Stormer
patent: 4270635 (1981-06-01), Wossner
patent: 4356898 (1982-11-01), Guzder et al.
patent: 4401196 (1983-08-01), Grundei
Axthammer Ludwig
Wossner Felix
Butler Douglas C.
Fichtel & Sachs AG
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