Brakes – Internal-resistance motion retarder – With means for locking parts together temporarily
Reexamination Certificate
2000-06-20
2001-06-19
Butler, Douglas C. (Department: 3613)
Brakes
Internal-resistance motion retarder
With means for locking parts together temporarily
C267S064120, C092S028000, C303S002000, C188S271000, C188S07700R
Reexamination Certificate
active
06247564
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention relates to an automotive suspension-locking device for preventing a vehicle suspension from bouncing while passengers get on or off.
(b) Description of the Related Art
An air suspension is adapted to a heavy weight vehicle like a bus because its shock absorbing efficiency is superior to other types of suspensions. Typically, the air suspension system comprises an air chamber filled with compressed air and a piston rod for constituting an air spring and a shock absorber. The air spring has a low elastic modulus and low damping force so as to be used for a high volume shock absorber.
However, the air suspension has drawbacks in that a vehicle equipped with the air suspension bounces up and down when the passengers get on or off when the vehicle is stopped, because it adapts an air spring mechanism having a low elastic modulus and a low damping force.
SUMMARY OF THE INVENTION
The present invention has been made in an effort to solve the above problems of the prior art.
It is an object of the present invention to provide an automotive air suspension-locking device for preventing a vehicle from bouncing up and down when passengers get on or off the vehicle.
To achieve the above object, the automotive suspension-locking device is mounted to a shock absorber having a cylinder and a piston rod, the suspension-locking device comprising, a brake band provided around the piston rod of the shock absorber for locking and unlocking the shock absorber, a means for controlling the brake band, the control means being connected to both end portions of the brake band, and an actuator connected to the control means by means of a piston rod thereof for actuating the control means.
REFERENCES:
patent: 1848775 (1932-03-01), Girling
patent: 2868482 (1959-01-01), Westcott, Jr.
patent: 3658159 (1972-04-01), Mallinger
patent: 3756354 (1973-09-01), Clark
patent: 4015862 (1977-04-01), Bahrman et al.
patent: 4067417 (1978-01-01), Ostrowski
patent: 4449702 (1984-05-01), Hasagawa
patent: 4930373 (1990-06-01), Nakawaki et al.
patent: 5103944 (1992-04-01), Severinsson
patent: 5331718 (1994-07-01), Gilbert et al.
patent: 5505475 (1996-04-01), Turner
patent: 5575448 (1996-11-01), Battocchio
patent: 6178870 (2001-01-01), Takahashi
patent: 2540402 (1977-03-01), None
patent: 19806500 (1999-08-01), None
patent: 19806498 (1999-08-01), None
Butler Douglas C.
Christie Parker & Hale LLP
Hyundai Motor Company
LandOfFree
Automotive suspension locking device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automotive suspension locking device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automotive suspension locking device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2468164