Patent
Rotary vane pump with pressure biased flow directing end plate
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TLDR
In a sliding vane type of rotary pump usable for power steering systems, a seal of hour glass shape is provided between the flow directing plate, on the outlet side of the vane rotor and the outlet pressure chamber, to confine exposure of the high pressure of the outlet chamber to the downstream side of a plate within a predetermined area only partially balanced by exposure of downstream side to such high pressure as mentioned in this paper.Abstract:
In a sliding vane type of rotary pump usable for power steering systems a seal of hour glass shape is provided between the flow directing plate, on the outlet side of the vane rotor and the outlet pressure chamber, to confine exposure of the high pressure of the outlet chamber to the downstream side of the plate within a predetermined area only partially balanced by exposure of the upstream side to such high pressure and to also isolate suction passages from the outlet chamber pressure. The result is a flexing of the flow directing plate at the center toward the pump rotor to reduce rotary clearance and permit the use of thinner and lighter weight flow directing plates.read more
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Power steering pump with balanced porting
TL;DR: The balanced vane hydraulic pump designed for automotive power steering applications employs a two-piece aluminum housing construction, a cam ring, rotor flow regulating valve, a high pressure gallery and a pressure plate, all located in the rear housing section, and a set of needle bearings located in front housing section for supporting the pump drive shaft from one end only as mentioned in this paper.
Patent
Rotary vane type of pump with elongated damping chambers
Peter Friedrich,Johann Merz +1 more
TL;DR: A vane type pump has an elongated pump housing through which the drive shaft of the pump passes as mentioned in this paper, and very large volume damping chambers are provided for smoothing out pump pulsations.
Patent
Recessed pressure plate
Douglas G. Snow,Jerry L. Wilson +1 more
TL;DR: The balanced vane hydraulic pump designed for automotive power steering applications employs a two-piece aluminum housing construction, a cam ring, rotor flow regulating valve, a high pressure gallery and a pressure plate, all located in the rear housing section, and a set of needle bearings located in front housing section for supporting the pump drive shaft from one end only.
Patent
Rotary vane machine
TL;DR: A rotary-vane machine as mentioned in this paper has a stationary tubular housing having a lubricated pump with an oil carter, and an oil-free section, with two pairs of ports through which a working medium enters or exits, a housing cover plate, a sun gear attached to a boss, a bearing and oil transferring member, a cover disc attachable to the end of the oil free housing section, and a tubular rotor inside of which are fixedly attachable, two tapering vanes rotatable, together with the rotor, at a uniform speed.
Patent
Rotary piston pump end pressure regulation system
TL;DR: A rotary piston pump for fluids as mentioned in this paper is a type of pump where the ends of the housing are configured so as to provide reduced pressure differentials between opposite sides of the rotor end disks.
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Stack-up assembly
TL;DR: In this article, a stack-up pump is provided with a pressure generating area ported through a pressure plate and a separator plate to a valve plate, the separatorplate contacting the pressure plate on one side and open to high pressure channels on the other side.