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High pressure open discharge pump systemRelated Patent Categories: Pumps, Condition Responsive Control Of Drive Transmission Or Pump Displacement, By Changing Phasing Of Plural Pistons In Single ChamberHigh pressure open discharge pump system description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060127228, High pressure open discharge pump system. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] Not applicable. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] Not applicable. REFERENCE TO A "SEQUENCE LISTING" [0003] Not applicable. BACKGROUND OF THE INVENTION [0004] 1. Field of the Invention [0005] The present invention relates to high pressure pump systems, and more particularly, to a cam driven high pressure open discharge pump system providing substantially constant pressure output with increased efficiency, and reduced maintenance downtime. [0006] 2. DESCRIPTION OF RELATED ART [0007] Pumps have been historically used for a variety of applications typically involving the transfer of liquids. The development of pumps has provided increased availability of pumping pressures. As pumping pressures have increased, the applications for such high pressure streams have increased. [0008] Reciprocating piston pumps have been used to provide elevated flow rate pressures. However, the reciprocating piston pumps generate an undesirable pulse in the output pressure. Many recently developed applications for high-pressure systems require minimal spikes in the output pressure. [0009] Centrifugal pumps are typically able to provide relatively constant output pressures, but cannot sufficiently produce high pressure and are relatively inefficient. [0010] Therefore, the need exists for a high pressure pump system which can provide a relatively high and stable output pressure efficiently. The need also exists for a high pressure pump system that can provide component interchange, without extended downtime. The need further exists for a pump system that can be tailored to a specific application, without requiring complete retooling for manufacture of the system. BRIEF SUMMARY OF THE INVENTION [0011] The present pump system provides a substantially constant flow rate at a desired high pressure output. In addition, the pump system is capable of delivering high-pressure liquids such as water, water with additives, liquid nitrogen as well as vegetable oils at constant elevated pressures and flow rates over substantial periods of operation. As used herein, the term "constant" is taken to be within 10% of a given predetermined value. The constant flow high-pressure liquid supply from the present pump system can be used for material cutting in the abrasive jet and fluid jet industries. In addition, applications which do not require through cutting of material such as cleaning, surface preparation, surface removal, milling, cleaning, sterilization and etching can employ a constant high-pressure liquid supply. [0012] The present pump system includes a base plate; a cam shaft rotatably mounted to the base plate; a cam affixed to the cam shaft for rotation with the cam shaft; at least two pressurizing subassemblies in contact with the cam, each pressurizing subassembly including: (i) a piston guide block connected relative to the base plate; (ii) a piston rod slidably connected to the piston guide block; (iii) a cam follower support releasably connected to the piston rod; (iv) a cam follower connected to the cam follower support to contact the cam; and (v) a high pressure cylinder assembly releasably connected to the guide block to receive a length of the piston rod, the high pressure cylinder assembly including at least one sealed interface between the piston rod and the high-pressure cylinder assembly; a linear guide bearing connecting the cam follower support to the base plate; and a tie brace connected to each piston guide block. In a further configuration, the tie brace is rotatably connected to the camshaft, and in another construction at least one tie brace is connected to the base plate. [0013] Further constructions of the pump system can include a plurality of pressurizing subassemblies, inlet and outlet check valves located upstream and downstream of the pump assembly, respectively; linear guide bearings connecting the cam follower support to the base plate. BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S) [0014] FIG. 1 is a perspective view of a high pressure pump system. [0015] FIG. 1b is a perspective view of the high pressure pump system of FIG. 1, with the tie brace removed. [0016] FIG. 2 is an exploded perspective view of the high pressure pump system of FIG. 1. [0017] FIG. 3 is an exploded perspective view of a portion of the high pressure pump system. [0018] FIG. 4 is an exploded perspective view of a portion of the high pressure pump system with the tie brace not shown. Continue reading about High pressure open discharge pump system... Full patent description for High pressure open discharge pump system Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this High pressure open discharge pump system patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like High pressure open discharge pump system or other areas of interest. ### Previous Patent Application: Hydraulically driven oil recovery system Next Patent Application: Variable displacement pump and control therefor Industry Class: Pumps ### FreshPatents.com Support Thank you for viewing the High pressure open discharge pump system patent info. 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