| ReturnTo Theme-Group-Choice | Onelevelup |
| 3H070 | Reciprocating pumps | |
| F04B1/00 -7/06 | ||
| F04B1/00-7/06 | AA | AA00 ACTUATION FLUIDS |
AA01 | AA02 | AA03 | AA04 | AA05 | AA07 | ||||
| . Oil | . Fuel | . Water | . Corrosive fluids | . Air | . Others | |||||||
| BB | BB00 FORMS OF RECIPROCATING PUMPS |
BB01 | BB02 | BB03 | BB04 | BB05 | BB06 | BB07 | ||||
| . Pumps with cylinders | . . Pumps with cylinders in a radial arrangement | . . . Driving force that is applied from outside the cylinders | . . Cylinders with an axial arrangement (e.g., use of oblique plates) | . . . Cylinders that are inclined with relation to the main shaft | . . Movable cylinders | . . Stationary cylinders | ||||||
| BB11 | BB12 | BB13 | BB14 | BB15 | BB16 | BB17 | ||||||
| . Types of pistons | . . Interconnected pistons that form a single actuation chamber | . . . Opposing pistons | . . . Nested pistons | . . Integrated pistons that form multiple actuation chambers | . . Multiple pistons of different types | . . Spring-loaded pistons | ||||||
| BB21 | BB22 | BB23 | BB25 | |||||||||
| . Multiple pumps | . . Multiple pumps arranged in a straight line relative to the drive source | . . Multiple pumps arranged in a line parallel to the drive source | . Pumps that discharge multiple times in a single operation | |||||||||
| CC | CC00 PURPOSE AND EFFECTS OF IMPROVEMENTS |
CC01 | CC02 | CC03 | CC04 | CC05 | CC06 | CC07 | CC08 | |||
| . Prevention of noise and vibration | . . Prevention of noise and vibration from mechanical causes | . . Prevention of noise and vibration from fluid dynamic causes | . Prevention of cavitation | . Adjustment of thrust | . Reduction of the pressure on the sliding surface | . Improvement of durability | . Improvement of separation, discharge, and elimination capabilities (i.e., including measures for eliminating foreign matter and for the extraction of gases) | |||||
| CC11 | CC12 | CC13 | CC14 | CC15 | CC16 | CC17 | CC18 | CC19 | ||||
| . Control | . . Volume control | . . . Control of pressure-flow rate (P-Q) characteristics | . . . . Change of characteristics | . . . . Fixed horsepower control | . . . . Cut-off control | . . . . . Variable pressure control | . . . . Combined control | . . . Pressure control | ||||
| CC21 | CC22 | CC23 | CC24 | CC25 | CC27 | CC28 | CC29 | |||||
| . Improvement of pump capabilities and efficiency | . . Improvement of efficiency with regards to capacity | . . . Reduction of dead volume | . . Increase of piston speed | . . Increase of discharge pressure | . Lubrication | . Measures to prevent cooling or heating | . Sealing | |||||
| CC31 | CC32 | CC33 | CC34 | CC35 | CC37 | |||||||
| . Manufacturing and processing | . Assembly characteristics | . Maintenance, inspection, and testing | . Size and weight reduction | . Simplification | . Others | |||||||
| DD | DD00 STRUCTURES OF RECIPROCATING PUMPS |
DD01 | DD02 | DD03 | DD04 | DD05 | DD06 | DD07 | DD08 | DD09 | ||
| . Pump structures with characteristic cylinders | . . Rotary driving by means of a drive shaft | . . . Pump structures with a characteristic means for transmitting driving force | . . . . Drive force transmission by means of engagement of gear-like members | . . . . . Engagement of splines | . . . . Transmission by use of free joints | . . . Rotary driving by means of the pistons | . . Pump structures with a characteristic circulation opening | . . Pump structures with characteristic sliding units | ||||
| DD11 | DD12 | DD13 | DD14 | DD15 | DD16 | DD17 | ||||||
| . Pump structures with characteristic pistons | . . Pistons with shoes | . . . Separate shoes for each piston | . . . Common shoes for all pistons | . . . Shoes that are maintained or held on the cam | . . . . Shoe-holding units are provided on the cam | . . . . Shoes that are held by being pressed against the cam | ||||||
| DD22 | DD23 | DD24 | DD26 | DD27 | DD28 | |||||||
| . . Pistons with characteristic motion | . . . Pistons with oscillating motion | . . . Pistons that rotate around a rotary axis | . . Pistons with characteristic shapes | . . . Spherical pistons | . . Pistons with characteristic sliding parts | |||||||
| DD31 | DD32 | DD33 | DD34 | DD35 | DD36 | DD38 | DD39 | |||||
| . Pump structures with characteristic processing cams | . . Cams with characteristic sliding surfaces | . . . Cams with curved surfaces | . . . Cam surfaces with steps | . . . Sliding surfaces that are on the outer surface of the cam | . . . Sliding surfaces that are on the inner surface of the cam | . . Cams that are adjustable in stages | . . . Cams with variable adjustability | |||||
| DD42 | DD43 | DD44 | DD45 | DD46 | DD47 | DD48 | ||||||
| . . Cams with characteristic adjustment operations | . . . Linear adjustment | . . . Inclined rotary adjustment | . . . . Inclined rotary adjustment using the center shaft | . . . . Semi-spherical inclined rotary sliding surfaces | . . . . Semi-tubular inclined rotary sliding surfaces | . . . . Inclined rotary cam surfaces | ||||||
| DD52 | DD53 | DD54 | DD55 | DD56 | DD57 | DD58 | DD59 | DD60 | ||||
| . . Cams with a characteristic adjustment means | . . . Feedback of discharge pressure | . . . . Feedback through the pressure-control valve | . . . Adjustment by fluid actuators | . . . . Adjustment through the pressure-control valve | . . . Manual adjustment | . . . Electrical adjustment | . . Cams with a characteristic position-detection means | . . . Position detection using an electrical means | ||||
| DD61 | DD62 | DD63 | DD64 | DD65 | DD66 | DD68 | DD69 | |||||
| . Pump structures with a characteristic distribution means | . . Distribution valves that are separate from the pistons and cylinders | . . . Distribution valves that are mechanically actuated | . . . Distribution valves that are actuated by fluid pressure | . . . Distribution valves that are electrically actuated | . . Distribution systems that use check valves | . . Distribution systems with characteristic flow-opening shapes or connection grooves | . . Distribution systems with characteristic sliding units | |||||
| DD72 | DD73 | DD74 | DD75 | DD76 | DD77 | DD78 | DD79 | |||||
| . . Distribution by means of cooperative movement of the pistons and cylinders | . . . Relative reciprocating movement and relative rotation of the pistons and cylinders | . . . . Reciprocating motion and rotary motion that occur at different times | . . . Cooperative movement of the pistons and cylinders by means of the cam | . . . . Interlocking grooves and pins | . . . . Integration of the cam members and cylinders | . . . . Integration of the cam members and pistons | . . . Cooperatvive movement of the pistons and cylinders by the crankshaft | |||||
| DD81 | DD82 | DD83 | DD84 | DD85 | DD86 | DD87 | DD88 | DD89 | ||||
| . Pump structures with a characteristic means of pressure adjustment | . . Pressure-adjusting chambers or pockets | . . Pressure-adjusting paths | . . . Paths that are notched or grooved | . . . Paths that are connected with the intake side | . . . Paths that are connected with the discharge side | . . Pressure-control valves | . . . Relief valves | . . . Pressure-reduction valves | ||||
| DD91 | DD92 | DD93 | DD94 | DD96 | ||||||||
| . Pump structures with characteristic housings | . Pump structures with characteristic power-transmission shafts | . . Pump drive shafts | . Pump structures with characteristic bearings | . Others | ||||||||
| EE | EE00 MATERIALS |
EE01 | EE02 | EE03 | EE04 | EE05 | EE06 | EE07 | EE08 | EE09 | ||
| . Use of specific kinds of metals | . . Use of specific kinds of metals for the pistons | . . Use of specific kinds of metals for the cylinders | . . Use of sintered metals | . . . Use for pistons | . . . Use for cylinders | . Use of synthetic resins | . . Use for pistons | . . Use for cylinders | ||||
| EE11 | EE12 | EE13 | EE15 | |||||||||
| . Use of ceramics | . . Use for pistons | . . Use for cylinders | . Other materials |