Brakes – Internal-resistance motion retarder – Resistance alters relative to direction of thrust member
Patent
1996-11-14
1998-09-22
Ballato, Josie
Brakes
Internal-resistance motion retarder
Resistance alters relative to direction of thrust member
18832215, F16F 946
Patent
active
058101276
ABSTRACT:
A proportional valve for a hydraulic dashpot with a piston and cylinder. The piston travels back and forth in the cylinder on the end of a rod, accommodates pressure-dependent valves for hydraulic fluid to travel back and forth through during both the compression and decompression phases, separates the interior of the cylinder into two dynamics chambers, accommodates channels that provide a route for the fluid that actuates the valves to flow through directly, and accommodates a series of bypass channels. The bypass channels accommodate an electromagnetically actuated bolt. The bolt slides back and forth in the bypass channels, regulating how much fluid can flow through them. The end of each valve facing away from the direct-route channels accommodates a compartment for generating pressure in. Each pressure-generation compartment communicates through the bypass channels with the dynamics chamber on the other side of the piston. The pressure-generation compartment is resiliently sealed off from its associated dynamics chamber. The pressure-generation compartment is demarcated by the valve's disk, by a component that resiliently seals it off from its associated dynamics chamber, by the areas of the piston wall that accommodate the entrances to the bypass channels, and/or by rings inserted into the piston. The resiliently sealing component in the pressure-generation compartment associated with the dynamics chamber at the other end is forced out of the way by the fluid in that dynamics chamber.
REFERENCES:
patent: 2158645 (1939-05-01), Willard
patent: 5392883 (1995-02-01), Huang et al.
August Bilstein GmbH & Co. KG
Ballato Josie
Fogiel Max
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