Fluid handling – Systems – Sequentially closing and opening alternately seating flow...
Patent
1991-06-06
1992-11-10
Nilson, Robert G.
Fluid handling
Systems
Sequentially closing and opening alternately seating flow...
251 80, 267 6416, 280714, B60G 1126
Patent
active
051615797
ABSTRACT:
A leveling valve for controlling the amount of air within an air spring for maintaining a constant level of a vehicle chassis or frame relative to its axles. The valve includes an elongated body in which a uniquely constructed actuating mechanism is located at one end and a valve means at the other end with a dampener and a pilot-operated means located therebetween. An elongated plunger extends from the actuating means to the valve means through the dampener and the pilot-operated dump means. The actuating mechanism at one end of the plunger includes a sleeve slidable on the plunger and biased at each end by coil springs for maintaining the neutral position of the plunger and valve means. The springs permit over-travel of the actuating mechanism when the plunger reaches its limit of travel and also assists a dump piston in overriding the actuating mechanism.
REFERENCES:
patent: 2942623 (1960-06-01), Schwartz
patent: 3006657 (1961-10-01), Augustin
patent: 3071393 (1963-01-01), Valentine
patent: 3071394 (1963-01-01), Miller
patent: 3181854 (1965-05-01), Backlund
patent: 3311389 (1967-03-01), Barton et al.
patent: 3399933 (1968-09-01), Alfieri et al.
patent: 3419315 (1968-12-01), Bueler
patent: 3442502 (1969-05-01), Fischer et al.
patent: 3464742 (1969-09-01), Cruse
patent: 3560017 (1971-02-01), Vogel et al.
patent: 3572747 (1971-03-01), Pollinger et al.
patent: 3580646 (1971-05-01), Terment
patent: 3635460 (1972-01-01), Shilton et al.
patent: 3889935 (1975-06-01), Palm et al.
patent: 3901267 (1975-08-01), Moon, Jr.
patent: 4017099 (1977-04-01), Hegel et al.
patent: 4231554 (1980-11-01), Ekonen et al.
patent: 4453736 (1984-06-01), Bergemann et al.
patent: 4499921 (1985-02-01), Stoll
patent: 4753328 (1988-06-01), Williams et al.
patent: 4886092 (1989-12-01), Barzelay
patent: 4973855 (1990-11-01), Kamimura et al.
Hadley Products, division of Nelson Metal Products, Corp.
Nilson Robert G.
LandOfFree
Leveling valve for air springs does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Leveling valve for air springs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leveling valve for air springs will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2287695