| Class Number |
Class Name |
Patents |
| 417/1 |
Condition responsive control of pump drive motor |
33 |
| 417/199.1 |
Diverse pumps |
73 |
| 417/207 |
By heating of pumped fluid |
72 |
| 417/210 |
Pump fluid biased overcenter load equalizer |
2 |
| 417/211 |
Inertia-type pumping member or drive means |
40 |
| 417/211.5 |
Liquid level responsive control of displacement, volumetric capacity, or drive transmission |
10 |
| 417/212 |
Condition responsive control of drive transmission or pump displacement |
109 |
| 417/225 |
Intensifier |
50 |
| 417/228 |
With condition responsive control of coolant or lubricant |
73 |
| 417/229 |
Operated by art device |
38 |
| 417/234 |
Ambulant, body supported, or with carrying handle |
307 |
| 417/236 |
Convertible to apparatus of a different class |
25 |
| 417/238 |
Changeable by assembly or disassembly |
83 |
| 417/240 |
Inertia liquid piston (e.g., momentum, etc.) |
28 |
| 417/242 |
Position responsive bypass between plural pump chambers |
7 |
| 417/243 |
With intercooler |
99 |
| 417/244 |
Successive stages |
154 |
| 417/269 |
Three or more cylinders arranged in parallel, radial, or conical relationship with rotary transmission axis |
890 |
| 417/274 |
Condition responsive variable volumetric capacity expansible chamber pump (i.e., clearance control) |
41 |
| 417/278 |
External condition responsive pumped fluid control |
22 |
| 417/279 |
With condition responsive pumped fluid control |
86 |
| 417/312 |
With muffler acting on pump fluid |
454 |
| 417/313 |
Combined |
457 |
| 417/314 |
Single acting changeable to or from double acting |
5 |
| 417/315 |
Reverse flow with unidirectional drive or unidirectional flow with reverse drive |
53 |
| 417/316 |
Correlated pump and motor or clutch control |
24 |
| 417/319 |
Including disengageable rotary or frangible drive connection |
110 |
| 417/320 |
Serially formed pumping chambers (e.g., endless) |
20 |
| 417/321 |
Motor driven |
42 |
| 417/425 |
Separate manual and power driven pumping members |
6 |
| 417/426 |
Plural pumps with individual or relative control |
116 |
| 417/430 |
Including means to (1) agitate pump fluid, or (2) prevent foreign material settling from pump fluid |
47 |
| 417/432 |
Including application of separate fluid to pump valve |
7 |
| 417/434 |
Including separate port on noncyclic valve for draining pump portion |
37 |
| 417/435 |
Including separate port on noncyclic valve for venting or filling pump portion |
117 |
| 417/436 |
Transversely movable impelling member (e.g., paddle) |
25 |
| 417/437 |
Expansible chamber type |
108 |
| 417/48 |
Electrical or getter type |
171 |
| 417/52 |
Expansion and contraction of pump fluid |
38 |
| 417/53 |
Processes |
1,002 |
| 417/56 |
Drilled well free piston-type pump |
36 |
| 417/572 |
Miscellaneous |
145 |
| 417/61 |
Buoyantly supported |
41 |
| 417/62 |
Alternate series or parallel operation of plural pumps |
46 |
| 417/63 |
With signal, indicator, or inspection means |
557 |
| 417/64 |
Gas pressure exchange using rotary cellular conveyor |
60 |
| 417/65 |
One fluid pumped by contact or entrainment with another |
32 |
| 417/900 |
Slurry pumps (e.g., concrete) |
241 |
| 417/901 |
Cryogenic pumps |
188 |
| 417/902 |
Hermetically sealed motor pump unit |
370 |
| 417/903 |
Treadle operated |
13 |
| 417/904 |
Well pump driven by fluid motor mounted above ground |
34 |
| 417/DIG.1 |
Materials digest |
75 |
