Backhoe boom cylinder bleed circuit

Details Backhoe boom cylinder bleed circuit Backhoe boom cylinder bleed circuit

1987-09-28

1988-08-30

Spar, Robert J.

Material or article handling

Vertically swinging load support

Shovel or fork type

91402, 414719, E02F 342

Patent

active

047672552

ABSTRACT:
A bleed circuit for a backhoe boom cylinder which minimizes cylinder pressure during over-center movement of the boom while permitting the maintenance of sufficient cylinder pressure during other boom operations. The boom cylinder is provided with a retract port, a head end port, and a small bleed port with a bleed line connecting the bleed and head end ports. As the boom cylinder crosses over-center, the fluid pressure in the retract side of the boom cylinder may be transmitted from the rod end to the head end of the cylinder thereby reducing cylinder pressure and improving the over-center controlability of the boom.

REFERENCES:
patent: 3376984 (1968-04-01), Long et al.
patent: 3853368 (1974-12-01), Eichelsheim
patent: 4074821 (1978-02-01), Long
patent: 4358240 (1982-11-01), Shumaker
patent: 4718325 (1988-01-01), Shore
patent: 4728251 (1988-03-01), Takashima et al.

Affiliated with

Also associated with

Rating

Backhoe boom cylinder bleed circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Backhoe boom cylinder bleed circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Backhoe boom cylinder bleed circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2084882