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Class Information
Number: 417/44A
Name: Pumps >
Description:










Sub-classes under this class:

Class Number Class Name Patents
417/1 Condition responsive control of pump drive motor 50
417/199.1 Diverse pumps 84
417/207 By heating of pumped fluid 86
417/210 Pump fluid biased overcenter load equalizer 4
417/211 Inertia-type pumping member or drive means 43
417/211.5 Liquid level responsive control of displacement, volumetric capacity, or drive transmission 14
417/212 Condition responsive control of drive transmission or pump displacement 142
417/225 Intensifier 56
417/228 With condition responsive control of coolant or lubricant 103
417/229 Operated by art device 39
417/234 Ambulant, body supported, or with carrying handle 371
417/236 Convertible to apparatus of a different class 32
417/238 Changeable by assembly or disassembly 91
417/240 Inertia liquid piston (e.g., momentum, etc.) 30
417/242 Position responsive bypass between plural pump chambers 8
417/243 With intercooler 116
417/244 Successive stages 188
417/269 Three or more cylinders arranged in parallel, radial, or conical relationship with rotary transmission axis 994
417/274 Condition responsive variable volumetric capacity expansible chamber pump (i.e., clearance control) 48
417/278 External condition responsive pumped fluid control 33
417/279 With condition responsive pumped fluid control 102
417/312 With muffler acting on pump fluid 517
417/313 Combined 537
417/314 Single acting changeable to or from double acting 5
417/315 Reverse flow with unidirectional drive or unidirectional flow with reverse drive 57
417/316 Correlated pump and motor or clutch control 33
417/319 Including disengageable rotary or frangible drive connection 143
417/320 Serially formed pumping chambers (e.g., endless) 20
417/321 Motor driven 65
417/425 Separate manual and power driven pumping members 7
417/426 Plural pumps with individual or relative control 140
417/430 Including means to (1) agitate pump fluid, or (2) prevent foreign material settling from pump fluid 59
417/432 Including application of separate fluid to pump valve 10
417/434 Including separate port on noncyclic valve for draining pump portion 38
417/435 Including separate port on noncyclic valve for venting or filling pump portion 124
417/436 Transversely movable impelling member (e.g., paddle) 27
417/437 Expansible chamber type 136
417/48 Electrical or getter type 214
417/52 Expansion and contraction of pump fluid 43
417/53 Processes 1,206
417/56 Drilled well free piston-type pump 41
417/572 Miscellaneous 174
417/61 Buoyantly supported 54
417/62 Alternate series or parallel operation of plural pumps 59
417/63 With signal, indicator, or inspection means 610
417/64 Gas pressure exchange using rotary cellular conveyor 67
417/65 One fluid pumped by contact or entrainment with another 45
417/900 Slurry pumps (e.g., concrete) 258
417/901 Cryogenic pumps 196
417/902 Hermetically sealed motor pump unit 413
417/903 Treadle operated 14
417/904 Well pump driven by fluid motor mounted above ground 48
417/DIG.1 Materials digest 76


Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
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