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Class Information
Number: 60/325
Name: Power plants > Pressure fluid source and motor
Description: Apparatus having a means or source capable of flowing or pressurizing a liquid or gaseous motive fluid, and motor means responsive to the pressure of the flow or of the fluid to convert such pressure or flow to useful mechanical work, said motive fluid being capable of transmitting energy from said source to said motor.










Sub-classes under this class:

Class Number Class Name Patents
60/403 Apparatus having means responsive to or ameliorating the effects of breakage, plugging, mechanical failure or power failure 141
60/330 Coaxial impeller and turbine unit 120
60/457 Collapsible joined device having fluid trapping valve in joint 0
60/329 Condition responsive control means responsive to, or compensating for, motive fluid compressibility, temperature variation or viscosity variation driven master 108
60/459 Condition responsive control of motive fluid flow 122
60/431 Condition responsive control of or by input to input pump drive means 270
60/445 Condition responsive control of pump or motor displacement 297
60/368 Control by independently operated punch card, tape, digital computer, counter, template, or programmer cyclic control 53
60/395 Control relative to independently driven oscillator, speed standard or pacer device 22
60/369 Cyclically operable reciprocating or oscillating motor or output stroke device 46
60/387 Distinct structure metering and dispensing a stroke length determining volume of motive fluid to the motor 24
60/384 Expansible chamber type volumetric responsive measuring device in series with or driven by output motor operates the motor controller 161
60/470 Externally operated multiway valve or interconnected control elements control motive fluid for a limited stroke to-and-fro device 9
60/388 Full range correspondence of position of external manipulator and motor positioned member effected by feedback linkage 11
60/435 Having a mechanical clutch or brake device in the power train 76
60/328 Having a signal, indicator or inspection means 57
60/394 Having apparatus control by timer or delay means 25
60/458 Having assembly or repair structure 27
60/420 Having condition responsive control in a system of distinct or separately operable outputs or output drive units 155
60/428 Having condition responsive control in a system of separately operable power input pumps, pump motors, pump cylinders or pressure fluid sources 149
60/433 Having correlated or joint actuation of controller of input to motive fluid pressurizer and of controller of motive fluid floow 79
60/456 Having distinct cooling or lubricating structure 223
60/455 Having leakage collecting structure 25
60/469 Having means controlling or attenuating shock vibration, sticking or chattering 159
60/486 Having plural energy input means, pumps or diverse pump outlets 353
60/484 Having plural energy outputs (e.g., plural motors, etc.) 419
60/483 Having selecting means distributing motive fluid between plural motors or cylinders rotatating a common output shaft 39
60/494 Including by-pass or restrictor controlling flow circuit 263
60/487 Input pump and rotary output motor system having displacement varying type of direction or speed selector 472
60/393 Manipulator for motive fluid control valve having load feel or motor pressure feedback 13
60/385 Manual pump pressurizes fluid to position output motor motive fluid control valve 31
60/327 Methods of operation 179
60/419 Motor driven by motive fluid of system drives pump pressurizing motive fluid of system 63
60/407 Pneumatic motor with gas supply or removal device 128
60/533 Pulsator 129
60/473 Pump means moves motive fluid from one chamber to an opposite chamber of opposed expansible chambers having a common output 36
60/477 Ram driven by fluid pumped from reservoir 118
60/400 Selective or simultaneous power and manual energy inputs 16
60/443 Servo-motor having externally operated control valve sets motor or pump displacement 85
60/532 Shock or resonant wave type of energy transmission 14
60/399 Unsafeness, unreadiness or disarray prevent manual change or operative state 35
60/326 Utilizing a mixture, suspension, semisolid or electro-conductive liquid as motive fluid 24
60/396 Utilizing lubricant, starter motor, cooling fluid, or fluid used for combustion in an internal combustion engine 8
60/398 Utilizing natural energy or having a geographic feature 452
60/493 Valve means reverses flow from pump to reversible rotary motor 71
60/413 With control means for structure storing work driving energy (e.g., accumulator, etc.) 431
60/453 With means purging, cleaning or separating undesirables from motive fluid 104


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8621860 Control system for work vehicle Jan. 7, 2014
8545701 Induced symbiotic osmosis [ISO] for salinity power generation Oct. 1, 2013
8497589 Electricity production from static weight Jul. 30, 2013
8483898 Method and apparatus for controlling speed of an electric pump in a vehicle Jul. 9, 2013
8312618 Module system for manufacturing two and three stable positions fluid-operated actuators Nov. 20, 2012
8215111 Electrical generation from explosives Jul. 10, 2012
8134243 Energy converter Mar. 13, 2012
8109357 Method and apparatus for liquid driven turbine engine for vehicles Feb. 7, 2012
8056329 Tractor trailer power system Nov. 15, 2011
7959417 Hydraulic engine Jun. 14, 2011
7779627 Variable-displacement piston-cylinder device Aug. 24, 2010
7770331 Potential energy storage system Aug. 10, 2010
7455138 Integrated hydraulic system for motor vehicles Nov. 25, 2008
7159525 Hydraulic steering arrangement Jan. 9, 2007
7148581 Rail based electric power generation system Dec. 12, 2006
7047733 Compact electro-hydraulic generator to motorize cupola May. 23, 2006
6868925 Engine with integral actuator Mar. 22, 2005
6858952 Power conversion system Feb. 22, 2005
6813885 Electrohydraulic setting device Nov. 9, 2004
6761026 Water pressure driven generator Jul. 13, 2004
6666024 Method and apparatus for generating energy using pressure from a large mass Dec. 23, 2003
6601470 Cam mechanism Aug. 5, 2003
6474061 Water pressure driven generator Nov. 5, 2002
6336322 Method of controlling a pump turbine Jan. 8, 2002
6264571 Dynamically balanced modular putter with a sliding hosel Jul. 24, 2001
5958338 Mounting apparatus for blood handling systems Sep. 28, 1999
5953913 System for an electro-hydraulic pressure supply for a power-assist device in a motor vehicle Sep. 21, 1999
5943860 Pressure loss compensation device of a fluid pressure circuit and cam arrangement incorporating the same Aug. 31, 1999
5924283 Energy management and supply system and method Jul. 20, 1999
5921082 Magnetically powered hydro-buoyant electric power generating plant Jul. 13, 1999
5865086 Thermo-hydro-dynamic system Feb. 2, 1999
5809779 Auxiliary hydraulic power unit Sep. 22, 1998
5802850 Hydraulic machine having an improved air bag Sep. 8, 1998
5713202 Methods for producing hydro-electric power Feb. 3, 1998
5600951 Hydraulic transmission system Feb. 11, 1997
5497621 Plastic reservoir Mar. 12, 1996
5489765 Electrical heating system with air-driven electrical generator Feb. 6, 1996
5472312 Water level regulating system Dec. 5, 1995
5461858 Method of producing hydroelectric power Oct. 31, 1995
5417063 Underwater hydraulic system for reducing pump noise May. 23, 1995
5411386 Random orbital sander May. 2, 1995
5394693 Pneumatic/hydraulic remote power unit Mar. 7, 1995
5365737 Hydraulically-operated equipment for construction machinery Nov. 22, 1994
5363650 Hydraulic cylinder assembly for use in variable external pressure environments Nov. 15, 1994
5363649 Hydraulic dry valve control apparatus Nov. 15, 1994
5355674 Installation for generating utilizable energy from potential energy Oct. 18, 1994
5351485 Rotary actuator-operated pretensioner Oct. 4, 1994
5333448 Fluid control nozzle for conduit cleaner Aug. 2, 1994
5271225 Multiple mode operated motor with various sized orifice ports Dec. 21, 1993
5241819 Tappet valve assembly for automatic railway vehicle couplers Sep. 7, 1993

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