Brakes – Internal-resistance motion retarder – Controlled by an operator remote from retarder
Patent
1991-07-18
1993-04-27
Halvosa, George A.
Brakes
Internal-resistance motion retarder
Controlled by an operator remote from retarder
188319, F16F 934
Patent
active
052053857
ABSTRACT:
An adjustable damping force hydraulic shock absorber includes a cylinder, a piston slidably disposed in the cylinder, two partitioned chambers communicating with each through a plurality of passages, a damping force generating mechanism for generating a damping force by controlling a flow of hydraulic fluid through the passages, and a valve for adjusting the damping force by selectively opening and closing one of the passages. The shock absorber is set in a hard mode where a relatively large damping force is generated when the one passage is closed and is set in a soft mode where a relatively small damping force is generated when the one passage is open. The valve includes a valve body axially movable to seat on and to be raised from a valve seat formed in the one passage, a spring for biasing the valve body away from the valve seat, a plunger of magnetic material connected to the valve body at one end thereof, and a solenoid into which the plunger is inserted. The solenoid displaces the plunger against the force of the spring to seat the valve body on the valve seat when energized. The shock absorber is set in the soft mode when the solenoid is not supplied with any current, and is set in the hard mode when current is supplied to the solenoid.
REFERENCES:
patent: 4638896 (1987-01-01), Poyser
patent: 4696379 (1987-09-01), Yamamoto et al.
patent: 4723640 (1988-02-01), Beck
patent: 4729459 (1988-03-01), Inagaki et al.
patent: 4826205 (1989-05-01), Kouda et al.
patent: 5035306 (1991-07-01), Ashiba
patent: 5064032 (1991-11-01), Ashiba
Halvosa George A.
Tokico Ltd.
LandOfFree
Adjustable damping force hydraulic shock absorber does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable damping force hydraulic shock absorber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable damping force hydraulic shock absorber will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2320482