Hydraulic system for bucket self-leveling during raising and low

Motors: expansible chamber type – Plural relatively movable or rigidly interconnected working... – Motors connected in series

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

91535, 414700, F15B 1100, F15B 1300, B66C 2300

Patent

active

054470943

ABSTRACT:
A hydraulic system having a first bucket leveling circuit for controlling leveling of the bucket during raising of the boom and a second bucket leveling circuit for controlling leveling of the bucket during lowering of the boom. The second bucket leveling circuit includes a motor-type flow divider having first and second shaft connected motor sections. Controls are operative when the boom control valve supplies fluid under pressure to the rod end of the boom cylinder for passing fluid from the piston end of the boom cylinder to the inlet of the first and second sections of the motor-type flow divider, and for preventing passage of fluid from the piston end of the boom cylinder to the inlet of the first flow divider. Although the pressure at the piston end of the boom cylinder is low during lowering of the boom, the motor-type flow divider is operative to supply fluid to the rod end of the bucket cylinder at a pressure that is substantially higher than the pressure at the piston end of the boom cylinder during lowering of the boom, and sufficient to move the bucket at a rate to maintain the latter substantially level.

REFERENCES:
patent: 2988891 (1961-06-01), Hemings
patent: 3563137 (1971-02-01), Graber et al.
patent: 3811587 (1974-05-01), Seaberg
patent: 4034649 (1977-07-01), Harvey
patent: 4085857 (1978-04-01), Smith
patent: 4408518 (1983-10-01), Diel et al.
patent: 4561342 (1985-12-01), Calvert
patent: 4709618 (1987-12-01), Zongker
patent: 4723847 (1988-02-01), Diel et al.
patent: 4799851 (1989-01-01), Swanson
patent: 4923362 (1990-05-01), Fryk
patent: 5234312 (1993-08-01), Hirose

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Hydraulic system for bucket self-leveling during raising and low does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic system for bucket self-leveling during raising and low, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic system for bucket self-leveling during raising and low will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-466778

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.