Hydraulic fluid system with piston and vane pumps

Details Hydraulic fluid system with piston and vane pumps Hydraulic fluid system with piston and vane pumps

1985-09-30

1986-11-11

Howard, Jacqueline V.

Compositions

Electrolytes for electrical devices

252 45, 252 785, 252 486, C10M13710, C10M14112

Patent

active

046221573

ABSTRACT:
In a hydraulic system containing a piston-type and vane-type pump and wherein said piston-type pump contains wear surfaces containing copper or a copper alloy and the vane-type pump contains wear surfaces containing steel, the improvement comprising utilizing a common sump for the hydraulic fluid used in said piston and vane pumps, said hydraulic fluid composition comprising a major amount of an oil of lubricating viscosity and 0.1 to 2.5 weight percent of a zinc dithiophosphate and 0.01 to 5.0 weight percent of a sulfurized ester-olefin containing at least 13 weight percent sulfur.

REFERENCES:
patent: 4053427 (1977-10-01), Hotten
patent: 4148737 (1979-04-01), Liston et al.
patent: 4200543 (1980-04-01), Liston et al.

Affiliated with

Also associated with

Rating

Hydraulic fluid system with piston and vane pumps 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 fluid system with piston and vane pumps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic fluid system with piston and vane pumps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-376004