Brakes – Internal-resistance motion retarder – Valve structure or location
Patent
1988-03-07
1990-02-13
Oberleitner, Robert J.
Brakes
Internal-resistance motion retarder
Valve structure or location
1374938, 18832222, 251333, F16F 934, F16K 1600, F16K 1726
Patent
active
048998559
ABSTRACT:
The assembly, mounted on a piston rod, is constructed as a piston body (1) having a cylindrical skirt and oil passages (4a) between the skirt and a cylindrical core (3) for fastening to the piston rod, and a double-acting floating valve in the form of an annular plate mounted with a specific prestress between a bearing zone (8) of the cylindrical skirt of the piston body (1) on the outside and a bearing member on the inside. The outer part of the bearing zone of the cylindrical skirt is cut in such a way that the bearing surface (8) is different from a surface contained between two circles concentric relative to the axis of the piston body (1), for example delimited by a polygon with concave sides (19), so that the change from laminar flow to turbulent flow during a rapid compression movement does not take place simultaneously over the entire circumference of the divergent oil stream.
REFERENCES:
patent: 3003596 (1961-10-01), de Carbon
patent: 3088556 (1963-05-01), de Carbon
patent: 3365191 (1968-01-01), Ellis, Jr. et al.
patent: 3837445 (1974-09-01), Pierle
patent: 3844389 (1974-10-01), de Carbon
patent: 4512447 (1985-04-01), Miura
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