US3335672A - Multiple cartridge pumping apparatus - Google Patents

Multiple cartridge pumping apparatus Download PDF

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Publication number
US3335672A
US3335672A US427366A US42736665A US3335672A US 3335672 A US3335672 A US 3335672A US 427366 A US427366 A US 427366A US 42736665 A US42736665 A US 42736665A US 3335672 A US3335672 A US 3335672A
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Prior art keywords
housing
cylinders
cartridge
outlet
cartridges
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US427366A
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English (en)
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Robert E Raymond
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MILL AND MINE SERVICES Inc A CORP OF
Hydrokinetics Inc
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Hydrokinetics Inc
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Priority to US427366A priority Critical patent/US3335672A/en
Priority to DE19661528442 priority patent/DE1528442A1/de
Priority to CH74566A priority patent/CH447819A/de
Priority to BE675433D priority patent/BE675433A/xx
Priority to GB2944/66A priority patent/GB1140586A/en
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Publication of US3335672A publication Critical patent/US3335672A/en
Assigned to MILL AND MINE SERVICES, INC., A CORP. OF PA reassignment MILL AND MINE SERVICES, INC., A CORP. OF PA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SCOVILL INC., A CT CORP.
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/16—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having two or more sets of cylinders or pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
    • F04B1/124—Pistons
    • F04B1/126—Piston shoe retaining means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/143—Cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/145—Housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members

Definitions

  • FIG. 10 MULTIPLE CARTRIDGE PUMPING APPARATUS Filed Jan. 22, 1965 9 Sheets-Sheet V 24-- .r I- ⁇ J R. E. RAYMOND MULTIPLE CARTRIDGE PUMPING APPARATUS Aug. 15 1967 .9 Sheets-Sheet 8 Filed Jan. 22, 1965 INVENTOR. ROBERT ERAYMOND x M" FIG. 10
  • the present invention in one of its aspects relates to a plurality of pumping cartridges, that can be removably mounted in various envelopes such as a pump housing means, the base frame of a machine tool, the engine block of mobile equipment, or in components of other machines that require hydraulic power.
  • each of the pumping cartridges combine in one assembly, a cylinder barrel, pumping pistons, inlet and outlet valve mechanisms, a manifold, and a piston return means.
  • the multiple cartridge pumping apparatus permits the use of a standard pumping cartridge for all size pumps that eliminates the development of larger mechanisms and makes possible building block pump packaging.
  • the standardized cartridge concept reduces the need for large inventories for all pump sizes as a standard size cartridge may be installed in multiples in various sizes of housing to provide pumps of various flow capacities.
  • the novel combination of a plurality of removable pumping cartridges in a single housing means permits lower costs in manufacturing and fabrication due to the standardization of the units.
  • the novel construction employing standardized removable pumping cartridges permits fixed or variable displacement operation with a standard unit for all size pumps as well as making possible divided flow operation wherein fixed displacement operation or variable displacement operation, or both can be achieved from a single pump housing.
  • novel multiple cartridge construction permits the adjustment of flow and pressure to any load requirements with a standard unit.
  • the multiple cartridge construction permits greater flexibility of circuit application with a greater variety of control possibilities.
  • the novel multiple cartridge construction permits much cooler operation at deadhead pressure as compared to conventional pumps because one cartridge may be allocated to hold pressure while the other cartridges are unloaded and circulate cooling fluid through the pump without loss of performance and with a great reduction in power requirements. This feature also reduces normal wear thus promoting longer pump life.
  • FIG. 1 is a side sectional elevational view of a multicartridge pumping apparatus constructed in accordance with the present invention
  • FIG. 2 is an end sectional elevational view of the apparatus illustrated in FIG. 1, the section being taken along line 2-2 of FIG. 1;
  • FIG. 3 is a front sectional elevational view of the apparatus illustrated in FIG. 1, the section being taken along line 33 of FIG. 1;
  • FIG. 4 is an end sectional elevational view of the apparatus illustrated in FIG. 1, the section being taken along line 4-4 in FIG. 1;
  • FIG. 5 is an end sectional elevational view of the apparatus illustrated in FIG. 1, the section being taken along the line 5-5 in FIG. 1;
  • FIG. 6 is an end sectional elevational view of the apparatus illustrated in FIG. 1, the section being taken along the line .6-6 in FIG. 1;
  • FIG. 7 is a side elevational view of the apparatus illustrated in FIG. 1;
  • FIG. 8 is a front elevational view of the apparatus illustrated in FIG. 1;
  • FIG. 9 is an end elevational view of the apparatus illustrated in FIG. 1;
  • FIG. 10 is a diagrammatic view of a typical control valve for controlling variable displacement operation of the pumping apparatus of the present invention.
  • FIG. 11 is a side sectional view of a pumping cartridge constructed in accordance with the present invention.
  • the cartridge being shown in isolated relationship from the housing means, the section being taken along the centerline of the cartridge;
  • FIG. 12 is an elevational view of a pumping cartridge constructed in accordance with the present invention, the cartridge being shown in isolated relationship from the housing means.
  • FIG. 1 illustrates an axial piston type pump constructed in accordance with the present invention that comprises a housing means, indicated generally at 20, which includes front and rear housing portions 22 and 24 joined to opposite ends of a middle casing portion 26 at interfaces 28 and 29.
  • Middle casing portion 26 may be divided into 2 porportions along interface 19 for convenience in manufacturing and fabrication.
  • Housing means 20 includes a plurality of inner surfaces 21 that form chambers for receiving a standardized cylinder barrel cartridge indicated generally at 23.
  • One of said cartridges 23 is shown in isolated relationship in FIGS. 11 and 12.
  • each cylinder barrel cartridge 23 is keyed against rotation in housing means 20 and slidably mounted therein by means of longitudinally extending side rail bearings 76.
  • Rail bearings 76 are mounted in guide grooves 72 and 74 and function not only to absorb piston side thrust reaction imposed on the cylinder barrel cartridge 23 but, in addition function as keys against cylinder barrel rotation and thereby serve to absorb torque.
  • Side rail bearings 76 are of substantially the same length as cylinder barrel 23, and ar preferably formed from standard steel dowel pins.
  • the standardized cartridge 23 includes a plurality of open-ended circumferentially spaced bores that form cylinders 30 which slidably receive a plurality of piston means indicated generally at '32.
  • each cylinder is closed by a reaction plug indicated generally at 34 that forms an outlet valve cartridge and includes a recess 36 containing an outlet ball check valve 38, the end of passage 36 being closed by a threaded plug 40 that is screwed into a threaded bore 44.
  • Plug 40 is provided with an axial outlet passage 42.
  • reaction plugs 34 are joined together as a subassembly by a plug connector plate member 200 that includes holes 202 for receiving shoulders 204 formed on the rear ends of the plug members.
  • a front snap ring 206 and a rear snap ring 208 secure each reaction plug in self-aligning mounted relationship to plate member 200.
  • reaction plug assembly including the reaction plugs 34 and plate member 200, is retained in cartridge 23, against spring pressures, when the cartridge is removed from the housing means 20 by diametrically opposed pins 270 which are screwed into threaded bores 272.
  • the inner ends 274 of pins 270 are extended into annular recesses 276 formed in the periphery of reaction plugs 34.
  • each cartridge 23 is axially positioned by a respective compression spring 280 that is interposed between a spring retainer 140 and a shoulder 282 on the respective cartridges 23.
  • compression spring 280 biases the forward end 290 of a respective cartridge against a respective annular shoulder 292 formed on an annular cylinder barrel cartridge driving piston 146, FIG. 1 which is to be described fully later in the specification.
  • Annular driving piston 146 operates solely as a spacer when fixed rather than variable displacement operation is desired.
  • one or more of the cartridges 23 may be adapted for either fixed or variable displacement operation and it is not necessary that all cartridges 23 operate unanimously one way or the other.
  • reaction plugs '34 further include a plurality of radially extending outlet passages 46 that connect valve chamber 42 with an annular groove 48 in the plug that in turn communicates with an annular manifold passage 50, the latter being core molded in housing portion 26 as seen in FIG. 2.
  • annular manifold 50 includes integrally molded manifold outlet passages 230 and 232 that discharge fluid to hollow outlet members indicated generally at 234 and 236, the latter including inner surfaces 238 that are constantly biased against extending flat surfaces 240 formed on cartridge 23.
  • Compression springs 242 bias hollow outlet members 234 and 236 in sealed relationship against longitudinally extending flat surfaces 240 at the outset of operation of the pump and these springs 242 are retained in place by threaded plugs 250.
  • Hollow outlet members 234 and 236 are each further provided with an annular outer surface 254 that is exposed to the outlet pressure from annular manifold 50 and thereby pressure biases surfaces 238 against surfaces 240 after the pump is in operation.
  • hollow outlet members 234 and 236 serve as pressure relief valves for dumping the instantaneous high flows to tank thereby preventing damage to the apparatus.
  • Outlet check valve 38 is biased against an outlet valve seat 52 on the end of plug 40 by a compression spring 54, the latter being provided with a guide pin 56.
  • each of the cylinders 30 in a respective cartridge 23 includes an inlet port 25 that receives fluid via a housing inlet port 27, inner chamber 31 formed by housing means 20 and a respective passage 33.
  • pressurized oil from a respective annular manifold 50 is delivered to the load, not illustrated, via main housing outlet port 116 that is formed in end port plate portion 24 through a respective port 100 and passage 102 which communicate with a respective cartridge 23 through a respective hollow outlet member 234.
  • each of the piston means 32 includes a spherical foot portion 77 on which is mounted a piston shoe means indicated generally at 80.
  • the shoe means 80 rides on an inclined drive surface 82 of a cam means 84 that is keyed to a driven shaft 86 at a key 88, the cam means being retained on shaft 86 by a nut 90.
  • Each shaft 86 is rotatably mounted in middle casing portion 26 by conventional tapered roller bearings 94 and 96 that are pressed into recesses 98 and 103, said :bearings being disposed in back to back relationship.
  • cam means 84 and shaft 86 are identically mounted in housing means 20.
  • Each driven shaft 86 is operatively connected to a main driving shaft 87 by a connecting link 91 which is retained on shaft 87 by a nut 89.
  • Shaft 87 is rotatably mounted in front casing portion 22 by conventional tapered roller bearings 95 and 97 that are pressed into recesses 99 and 101. Bearings 95 and 97 are also disposed in back to back relationship. It should also be pointed out that the forward end of driving shaft 87 is provided with a wiper type seal assembly 117.
  • each cartridge 23 the piston means 32 disposed in each cartridge 23 are returned to the bottom of their strokes by a yoke, indicated generally at 124, said yoke being molded from low friction resinous material such as nylon or the like.
  • Each yoke 124 includes an integrally molded spherical central socket 125 for receiving a spherical bearing portion 127 on the end of an axially shiftable yoke driving member 136 the latter being mounted in a bore 129.
  • Driving member 136 is constantly urged against yoke 124 by a compression spring 158 the ends of which are centered by spring positioners 140 and 142.
  • the periphery of yoke 124 is provided with a plurality of circumferentially spaced holes 131 that are large enough to permit free oscillation of neck portions 128 of piston means 32.
  • the periphery of yoke 124 further includes a plurality of piston shoe mounting recesses 133 that are shaped to form snugly fitting sockets for the tops of the piston shoe means 80.
  • FIG. 11 illustrates in detail the previously mentioned shoe means 80.
  • the shoe means is of composite construction and includes a lower bearing portion 144 that forms an upper spherical surface 145 for receiving spherical piston foot 77 and a lower bearing surface 148 that engages the upper surface 82 of the cam means.
  • a pair of upper bearing segments 151 include spherical surfaces 156 that conform with the upper portion of ballshaped piston foot 77 and a metal casing indicated generally at 160 includes an upper edge 163 that is crimped over upper bearing segments 151.
  • the lower edge of metal casing 160 is provided with an inner shoulder 165 that surrounds a recess 167 of reduced diameter provided on the lower end of lower bearing portion 144.
  • each cartridge 23 in the variable displacement embodiment is constantly biased towards the front of housing means by a compression spring 280 which also functions as a control spring furnishing the biasing force against which a respective cylinder barrel cartridge may be hydraulically shifted by means of a respective annular cylinder barrel cartridge driving piston 146.
  • Each piston 146 is mounted in a respective cylindrical surface 148 and forms therewith a control cylinder 150 for receiving pressurized oil in a manner later to 'be described.
  • a small annular piston surface 152 of large diameter on each cartridge driving piston 146 provides sufficient axial force with relatively low control pressures to shift the cylinder barrel cartridges 23 against the force of compression springs 280.
  • a main control port 164 communicates with a centrally disposed feedback chamber 162 which is connected to each control cylinder 150- through angularly drilled ports 161, 166 and 168.
  • Auxiliary control ports 170 and 172 which communicate with the respective control cylinders 150 for cartridges 23-B and 23-C, FIG. 5, may be connected to hydraulic control units, not shown, operating from different control signals with a still different control signal feeding a control unit connected to main control port 164 which communicates with the control cylinder 150 for cartridge 23A.
  • Cartridges 23-B and 23-C are isolated from port 164 and chamber 162 by threaded plugs not illustrated which may be inserted into ports 166 and 168. With this arrangement it can be readily seen that each cartridge may be individually controlled for variable displacement operation by supplying each cartridge with control signals from separate sources.
  • FIGURE diagrammatically illustrates a typical hydraulic pressure control mechanism which may be used to control variable displacement of the annular piston 146 and cartridges 23 just described.
  • a three-way pressure control valve 251 biased at a predetermined pressure by a spring means 252 is connected to .main control port 160 and receives pressure signals from the outlet flow from port 116 via line 253.
  • a spool 254 progressively opens as pressure increases to permit pressurized oil to flow to control cylinder 150 which causes cartridges 23 to shift axially to the left to reduce flow output as the effective piston stroke is reduced. As the output pressure drops, spool 254 closes the outlet to port 164 and opens the outlet to tank 260. This permits cartridges 23 to move back to the right under the bias of spring 280 to increase the effective piston stroke.
  • Control valves other than the typical control valve 251 may be used and may be mounted on the housing means 20 or at a location remote therefrom. Such modified control valves can be made responsive to pressure, flow, horsepower, or other load conditions depending on the particular requirements.
  • one or two cartridges 23 may operate under variable displace ment while the remaining cartridges operate under fixed displacement conditions. This is simply provided for by selectively plugging any of the ports 161, 166 or 168 leading to the cartridges from which fixed displacement flow is required.
  • FIGS. 1, 2, 9 and 11 a typical outlet porting arrangement will be described.
  • FIG. 6 A typical divided flow program is illustrated in FIG. 6 where a separate outlet port is provided for the outlet of oil from one of the cartridges 23..
  • a plug 182 is disposed in passage 106-A to isolate the flow from passages 102-A and 106-A from main housing outlet port 116. Then the pressurized oil flows from port 180 to a separate load, not shown. The remaining cartridges 23 release pressurized oil to the main load via outlet port 116 as previously described.
  • a typical cantilever type mechanism for driving the respective cam means 84 is illustrated generally at 185 and includes driven gears 186 mounted on respective driven shafts 86 of the respective cartridges.
  • a centrally disposed main driving gear 187 engages driven gears 186 and is mounted on a shaft 87. It will be understood that it is relatively simple to provide a variety of gear-ratios between driven shafts 86 and driving shaft 87 merely by selecting the proper diameters for the gears 186 and 187.
  • manifold outlet passage 230 always remains in communication with passage 231 in outlet member 234 notwithstanding axial movement of cylinder barrel 23.
  • Inner surfaces 238 of member 234 are always in sealed slideable engagement with axially extending flat surfaces 240 formed on cartridge 23.
  • driven shafts 86 each rotate a respective cam means 84 which drive its respective pistons.
  • each piston draws oil into cylinders 30 via housing inlet 27, radial distributing chamber 31, passages 33 and intake ports 25.
  • pistons 32 deliver oil from cylinders 30 to outlet port 116 via valve chamber 4-2, passages 46, 48, manifold 50, passages 230 and 231, outlet port 100 and passages 102 and 106.
  • variable displacement operation some of the pressurized oil in manifold 50 is delivered to a variable displacement control apparatus such as shown in FIG. 10 for shifting annular driving pistons 146 and cartridge 23 in the manner previously described.
  • variable displacement may be used without departing from the spirit of the present invention.
  • a housing means including a housing inlet and housing outlet ports and a main control inlet port; a plurality of pumping cartridges axially slideably mounted in said housing, each of said cartridges including a plurality of cylinders, pistons mounted for reciprocation in said cylinders, and cylinder inlet and outlet ports; control cylinder and piston means mounted in said housing for axially shifting each I of said cylinder inlet ports relative to said pistons; first passage means connecting said cartridge inlet ports with said housing inlet port; second passage means connecting said cartridge outlet port with said housing outlet port; third passage means connecting each of said control cylinders to said main control inlet port including a centrally disposed control distributing chamber in said housing for radial distributon of control flud to said control cylinders.
  • the hydraulic machine defined in claim 1 including at least one auxiliary control inlet port in said housing which bypasses said centrally disposed chamber and communicates directly with one of said control cylinders; and means for selectively closing the communication between said control distributing chamber and any one of said control cylinders.
  • a housing means including housing inlet and outlet ports; a plurality of pumping cartridges removably mounted in said hous ing means, each of said pumping cartridges including a plurality of axially disposed cylinders, pistons mounted for reciprocation in said cylinders, cartridge inlet ports and an axially extending side wall provided with cartridge outlet ports; means for connecting said cartridge inlet ports with said housing inlet port including a chamber centrally disposed in said housing means for radial distribution of fluid to a respective one of said cartridges; means for connecting said cartridge outlet ports with said housing outlet port; and drive shaft means rotatably mounted in said housing and operatively connected to each of said pumping cartridges.
  • a housing means including housing inlet and outlet ports; a plurality of axially extending side rail bearings mounted in said housing means; a plurality of pumping cartridges disposed in said housing means, each of said cartridges being slideably mounted on a pair of said side rail bearings and including an axially extending side wall provided with pumping cartridge outlet ports; and a plurality of hollow fluid outlet members mounted in said housing, a respective pair of said members being diametrically opposed in sealed slideable engagement with said axially extending side wall of a respective one of said cartridges, certain of said members including passage means communicating with said housing outlet port.
  • a housing means including an end port housing portion, cartridge housing portion, a gear train housing portion and a drive shaft housing portion, each of said portions being removably connected together; said housing means also including housing inlet and housing outlet ports; a plurality of axially extending side rail bearings mounted in said housing means; a plurality of pumping cartridges disposed in said housing means, each of said cartridges being slideably mounted on a pair of said side rail bearings and including an axially extending side wall provided with pumping cartridge outlet ports; and a plurality of hollow fluid outlet members mounted in said housing, a respective pair of said members being diametrically opposed in sealed slideably engagement with said axially extending side wall of a respective one of said cartridges, certain of said members including passage means communicating with said housing outlet port.
  • a multiple cartridge hydraulic machine comprising, in combination, housing means including a plurality of chambers, a housing inlet port, and a housing outlet port; a plurality of cylinder barrels disposed in said chambers, each of said cylinder barrels being slideably disposed in said housing means and including a plurality of cylinders, an annular manifold, an axially extending side wall provided with a barrel inlet port communicating with said cylinders and a barrel outlet port connecting said manifold with said housing outlet port, a plurality of pistons disposed in said cylinders, a plurality of reaction plugs having inner ends slideably disposed in said cylinders and outer ends freely engaging said housing means, outlet valve means disposed in said barrel for conducting fluid from said cylinders to said manifold, and piston return means engaging said pistons; a plurality of cam means, each of which includes a driven shaft means rotatably mounted in said housing means in driving engagement with said pistons in a respective one of said barrels; means for shifting said barrels in said housing means;
  • a multiple cartridge hydraulic machine comprising, in combination, housing means including a plurality of pressurized passages, a housing inlet port, and a housing outlet port; a plurality of cylinder barrels disposed in said pressurized passages, each of said cylinder barrels being disposed in said housing means and including a plurality of cylinders provided with intake and outlet ports and a manifold, each of said outlet ports having an outlet at an axially extending outer surface of said cylinder barrel, a plurality of pistons disposed in said cylinders, and piston return means engaging said pistons; a plurality of hollow outlet members radially shiftably mounted in said housing means, each of which includes an inner surface slideably engaging an outer surface of a respective one of said cylinder barrels and an outlet passage connecting a respective one of said pressurized passages in said housing means with a respective one of said manifold, a plurality of cam means, each of which includes a driven shaft means rotatably mounted in said housing means and in driving engagement with said pistons; means for shifting
  • a multiple cartridge hydraulic machine comprising, in combination, housing means including a plurality of chambers, a housing inlet port, and a housing outlet port;
  • each of said cylinder barrels being slideably disposed in said housing means and including a plurality of cylinders provided with intake ports and a manifold, a plurality of pistons disposed in said cylinders; and piston return means engaging said pistons; a plurality of control cylinders in said housing means; an annular piston disposed in each of sad control cylinders and engaging a respective one of said cylinder barrels for varying the location of said intake ports relative to said pistons; a plurality of cam means, each of which includes a driven shaft means rotatably mounted in said housing means and in driving engage with said pistons in a respective one of said barrels; means for conducting fluid from said manifold to said outlet port; and drive shaft means in driving engagement with said driven shaft means.
  • a multiple cartridge hydraulic machine comprising, in combination, housing means including a plurality of chambers, a housing inlet port, and a housing outlet port; a plurality of cylinder barrels disposed in said chambers, each of said cylinder barrels being slideably disposed in said housing means and including an annular manifold and a plurality of cylinders provided with intake ports, a plurality of pistons disposed in said cylinders; a plurality of driven shaft means each including a cam engaging said pistons in a respective one of said barrels; means for conducting fluid from said manifold to said outlet port; means for shifting said barrels in said housing means; and drive shaft means in driving engagement with said driven shaft means.
  • a multiple cartridge hydraulic machine comprising, in combination, housing means including a plurality of chambers, a housing inlet port, and a housing outlet port; a plurality of cylinder barrels disposed in said chambers, each of said cylinder barrels being slideably disposed in said housing means and including a plurality of cylinders provided with intake ports, a manifold, an outer wall provided with a plurality of axially extending guides, and piston return means engaging said pistons; a plurality of bearing members disposed between said guides and said housing means; a plurality of cam means, each of which includes a driven shaft means rotatably mounted in said housing means and in driving engagement with said pistons in a respective one of said barrels; means for conducting fiuid from said manifolds to said outlet port; means for shifting said barrels in said housing means; and drive shaft means in driving engagement with said driven shaft means.
  • a multiple cartridge hydraulic machine comprising, in combination, housing means including a plurality of pressurized passages, a housing inlet port, and a housing outlet port; a plurality of cylinder barrels disposed in said pressurized passages, each of said cylinder barrels being slideably mounted in said housing means and including a plurality of cylinders, a plurality of axially extending outer surfaces, a plurality of intake and outlet ports each of which communicates with one of said cylinders and extends to one of said outer surfaces, a plurality of pistons disposed in said cylinders and piston return means engaging said pistons; a plurality of shaft means each including a cam engaging said pistons in a respective one of said barrels; a plurality of hollow members movably mounted in said housing means each of which includes an inner surface slideablyengaging one of said surfaces on a respective one of said cylinder barrels and a passage means connecting one of said pressurized passages in said housing means with one of said outlet ports; means for axially shifting said cylinder barrels
  • a hydraulic machine comprising, in combination, housing means including a plurality of control cylinders; a plurality of cylinder barrels slideably mounted in said housing means, each of which includes a plurality of cylinders, a central axially extending bore, a plurality of axially extending outer surfaces, and a plurality of outlet ports each of which communicates with one of said cylinders and extends to one of said outer surfaces, and a plurality of pistons disposed in said cylinders; a plurality of shaft means each including a cam engaging said pistons in a respective one of said barrels; a barrel driving piston in each of said control cylinder and engaging a respective one of said cylinder barrels; a plurality of hollow members movably mounted in said housing means, each of which includes an inner surface slideably engaging one of said outer surfaces of a respective one of said cylinder barrels and a passage means having an inner passage end communicating with a respective one of said outlet ports and an outer passage end communicating with a respective one of said control cylinders; a
  • a multiple cartridge hydraulic machine comprising, in combination, housing means including a plurality of pressurized passages, a housing inlet port, and a housing outlet port; a plurality of cylinder barrels disposed in said pressurized passages, each of said cylinder barrels being slideably mounted in said housing means and including a plurality of cylinders, a central axially extending bore, a plurality of axially extending outer surfaces, a plurality of intake and outlet ports each of which communicates with one of said cylinders and extends to one of said outer surfaces, a plurality of pistons disposed in said cylinders, a plurality of reaction plugs including inner ends disposed in said cylinders and outer ends engaging an end of said housing means; a plurality of driven shaft means each including a cam in driving engagement with said pistons in a respective one of said barrels; a plurality of piston return means each including a member slideably carried in said axially extending bore for biasing pistons in a respective one of said barrels against a respective
  • a multiple cartridge hydraulic machine comprising, in combination, housing means including a plurality of chambers, a housing inlet port, and a housing outlet port; a plurality of cylinder barrels disposed in said chambers, each of said cylinder barrels being slideably disposed in said housing means and including a central axially extending bore, a plurality of axially extending cylinders, a plurality of intake ports, and a plurality of pistons disposed in said cylinders; a plurality of driven shaft means each including a cam engaging said piston in a respective one of said barrels; a piston return yoke engaging said pistons in a respective one of said barrels, a piston return.
  • a multiple cartridge hydraulic machine comprising, in combination, a housing means including an inner wall forming a plurality of chambers, an end wall, an end opening opposite said end wall, and housing inlet and outlet ports; a plurality of cylinder barrel cartridges, removeably mounted in said chambers, each of said cartridges including a plurality of axially extending cylinders, an axially extending side wall provided with a barrel outlet port communicating with said cylinders, a plurality of pistons mounted for reciprocation in said cylinders, a plurality of reaction plugs extending into said cylinders and including outer ends in force transmitting relationship with said end wall of said housing means, reaction plug connecting means, means attaching the outer ends of said reaction plugs to said connecting means to form a reaction plug assembly, means for retaining said reaction plug assembly on said cartridge and exhaust valve means for said cylinders; means connecting each of said barrel outlet ports with said housing outlet port; and means for keying each of said cartridges against rotation in said housing means.
  • a multiple cartridge hydraulic machine comprising, in combination, a housing means including an inner wall forming a plurality of chambers, an end wall, an end opening opposite said end wall, and housing inlet and outlet ports; a plurality of cylinder barrel cartridges, removably mounted in said chambers, each of said cartridges including a plurality of axially extending cylinders, an axially extending side wall provided with a barrel outlet port communicating with said cylinders, a plurality of pistons mounted for reciprocation in said cylinders, a plurality of reaction plugs extending into said cylinder and including outer ends in force transmitting relationship with said end wall of said housing means, reaction plug connecting means, means attaching the outer ends of said reaction plugs to said connecting means to form a reaction plug assembly, means for retaining said reaction plug assembly on said cartridge and exhaust valve means for said cylinders; means connecting each of said barrel outlet ports with said housing outlet port; means for keying each of said cartridges against rotation in said housing means; a plurality of cam means each of which includes a driven
  • a multiple cartridge hydraulic machine comprising, in combination, a housing means including an inner wall forming a plurality of chambers, an end wall, an end opening opposite said end wall, and housing inlet and outlet ports; a plurality of cylinder barrel cartridges removably mounted in said chambers, each of said cartridges including a plurality of axially extending cylinders, an axially extending side wall provided with a barrel outlet port communicating with said cylinders, a plurality of pistons mounted for reciprocation in said cylinders, a plurality of reaction plugs extending into said cylinders and including outer ends in force transmitting relationship with said end wall of said housing means, reaction plug connecting means, means attaching the outer ends of said reaction plugs to said connecting means to form a reaction plug assembly, means for retaining said reaction plug assembly on said cartridge and exhaust valve means for said cylinders; a plurality of hollow fluid outlet members mounted in said housing, each of which includes an inner end in sealed engagement with an axially extending side wall of a respective one of said cartridges and
  • a multiple cartridge hydraulic machine comprising, in combination, a housing means including an inner wall forming a plurality of chambers, an end wall, an end opening opposite said end wall, and housing inlet and outlet ports; a plurality of cylinder barrel cartridges removably mounted in said chambers, each of said cartridges including a plurality of axially extending cylinders, a central bore, a plurality of pistons mounted for reciprocation in said cylinders, yoke means engaging said pistons, a member slideably mounted in said bore and engaging said yoke means, exhaust valve means for said cylinders; a plurality of reaction plugs extended into said cylinders and including outer ends extending outwardly of said cylinders; reaction plug connecting means; means attaching the outer ends of said reaction plugs to said connecting means to form a reaction plug assembly; means for retaining said reaction plug assembly on said cylinder barrel; and spring means in said cylinder barrel and operative between said reaction plug assembly and said slideably mounted member.
  • a multiple cartridge hydraulic machine comprising, in combination, a housing means including an inner wall forming a plurality of chambers, an end wall, an end opening opposite said end wall, and housing inlet and outlet ports; a plurality of cylinder barrel cartridges, each of said cartridges being removably mounted in a respective one of said chambers and including a plurality of axially extending cylinders, an axially extending side wall provided with a barrel outlet port communicating with said cylinders, an integrally formed annular manifold including manifold inlet ports connected to each of said cylinders and a manifold outlet port connected to said barrel outlet port, a plurality of pistons mounted for reciprocation in said cylinders, exhaust valve means for said cylinders, said exhaust valve means being disposed within said cartridge; and a plurality of reaction plugs extending into said cylinders and including outer ends in force transmitting relationship with said end wall of said housing means; and means for keying each of said cartridges against rotation in said housing means.
  • a multiple cartridge hydraulic machine comprising, in combination, a housing means including an inner wall forming a plurality of chambers, an end wall, an end opening opposite said end wall, and housing inlet and outlet ports; a plurality of cylinder barrel cartridges, each of said cartridges being removably mounted in a respective one of said chambers and including a plurality of axially extending cylinders, an axially extending side wall provided with a barrel outlet port communicating with said cylinders, an integrally formed annular manifold including manifold inlet ports connected to each of said cylinders and a manifold outlet port connected to said barrel outlet port, a plurality of pistons mounted for reciprocation in said cylinders and exhaust valve means for said cylinders; a plurality of hollow fluid outlet members, each being mounted in said housing means and including an inner end in sealed engagement with an axially extending side wall of a respective one of said cartridges and means for keying said cylinder barrel against rotation in said housing means.
  • housing means including an inner wall, an end wall, an end opening opposite said end wall, a plurality of cylinder barrel locating shoulders, and housing inlet and outlet ports; a plurality of cylinder barrel cartridges, each of which being removably mounted in said housing means and including a plurality of axially extending cylinders, a central spring mounting recess provided with an inner end forming a cylinder barrel shoulder, a plurality of pistons mounted for reciprocation in said cylinders, a plurality of reaction plugs extended into said cylinders and including outer ends extending outwardly of said cylinder, and a plate member connecting said Outer ends of said reaction plugs; and spring means in each of said recesses and operative between a respective one of said cylinder barrel shoulders and plate members for urging a respective one of said cylinder barrel cartridges against a respective one of said barrel locating shoulders.
  • a housing including a housing inlet port and a main housing outlet port; a plurality of pumping cartridges mounted in said housing, each of said cartridges including a plurality of cylinders, pistons mounted for reciprocation in said cylinders, and a cartridge outlet port communicating with said cylinders; a plurality of outlet valve members mounted in said housing and communicating with a respective one of said cartridge outlet ports; first passage means integrally formed with said housing and communicating with a respective one of said outlet valve members; second passage means integrally formed with said housing and communicating with at least one of said hollow outlet members; and at least one auxiliary housing outlet port in said housing communicating with said second passage means whereby the outlet flow from certain of said pumping cartridges may be separated from certain other of said cartridges.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
US427366A 1965-01-22 1965-01-22 Multiple cartridge pumping apparatus Expired - Lifetime US3335672A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US427366A US3335672A (en) 1965-01-22 1965-01-22 Multiple cartridge pumping apparatus
DE19661528442 DE1528442A1 (de) 1965-01-22 1966-01-17 Axialkolbenpumpe,die aus einer Mehrzahl von einzelnen,in einem gemeinsamen Gehaeuse angebrachten und durch eine gemeinsame Antriebswelle angetriebenen Pumpeneinheiten besteht
CH74566A CH447819A (de) 1965-01-22 1966-01-20 Axialkolbenpumpe
BE675433D BE675433A (no) 1965-01-22 1966-01-21
GB2944/66A GB1140586A (en) 1965-01-22 1966-01-21 Hydraulic reciprocating pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US427366A US3335672A (en) 1965-01-22 1965-01-22 Multiple cartridge pumping apparatus

Publications (1)

Publication Number Publication Date
US3335672A true US3335672A (en) 1967-08-15

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Application Number Title Priority Date Filing Date
US427366A Expired - Lifetime US3335672A (en) 1965-01-22 1965-01-22 Multiple cartridge pumping apparatus

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US (1) US3335672A (no)
BE (1) BE675433A (no)
CH (1) CH447819A (no)
DE (1) DE1528442A1 (no)
GB (1) GB1140586A (no)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510969A (en) * 1967-07-31 1970-05-12 Clark Equipment Co Hydraulic drive for scraper elevator
US3597115A (en) * 1969-03-19 1971-08-03 Caterpillar Tractor Co Hydraulic pump mounting assembly
US10487826B2 (en) * 2014-06-30 2019-11-26 Danfoss Power Solutions GmbH & Co., OHG Integrated lubrication pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432825A (en) * 1946-02-08 1947-12-16 Goodman Mfg Co Mounting for fluid pumps
US2699725A (en) * 1952-04-23 1955-01-18 Orion T Quinn Jr Fluid pumping apparatus
US2800082A (en) * 1955-10-27 1957-07-23 Thompson Prod Inc Variable volume pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432825A (en) * 1946-02-08 1947-12-16 Goodman Mfg Co Mounting for fluid pumps
US2699725A (en) * 1952-04-23 1955-01-18 Orion T Quinn Jr Fluid pumping apparatus
US2800082A (en) * 1955-10-27 1957-07-23 Thompson Prod Inc Variable volume pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510969A (en) * 1967-07-31 1970-05-12 Clark Equipment Co Hydraulic drive for scraper elevator
US3597115A (en) * 1969-03-19 1971-08-03 Caterpillar Tractor Co Hydraulic pump mounting assembly
US10487826B2 (en) * 2014-06-30 2019-11-26 Danfoss Power Solutions GmbH & Co., OHG Integrated lubrication pump

Also Published As

Publication number Publication date
BE675433A (no) 1966-05-16
DE1528442A1 (de) 1971-06-09
GB1140586A (en) 1969-01-22
CH447819A (de) 1967-11-30

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