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Class Information
Number: 290
Name: Prime-mover dynamo plants >
Description: This class includes patents for the production and transmission of electric power and does not include any specific use to which the power is put. (Note. The mere reference to or the inclusion in a claim of an energy-consuming device, broadly stated--as, for example, a "lamp", "heater", or "tool"--is not sufficient to exclude the patent from this class). It includes the following groups when the invention includes some motor other than a dynamo electric machine in combination with a dynamo electric machine:










Class Number Class Name No. of Patents
290/5

Alternating current, rotary field and armature

15
290/50

Battery

57
290/7

Electric control

57
290/30R

Demand starters

18
290/30B

Standby service

2
290/30A

Standby source

11
290/36R

Electric-starting motor with generator

72
290/36A

Automatic starters including centrifugally operated contactors

3
290/37R

Ignition

38
290/37A

Stop cranking responsive to generator output

22
290/38R

Electric-starting motor

375
290/38E

Automatic starter including pedal control

23
290/38A

Axially movable armatures

39
290/38B

Inertia starters

23
290/38C

Miscellaneous collection of automatic engine starters

80
290/38D

Stop cranking responsive to manifold conditions

15
290/40R

Engine control

326
290/40E

Circuit resonant at given frequency

14
290/40D

Control in response to a time standard

43
290/40F

Control in response to d. c. generator output

61
290/40A

Control in response to engine speed

225
290/40C

Control in response to generator and prime mover conditions

561
290/40B

Control in response to generator line conditions

221
290/41

Ignition

26
290/8

Excitation dynamo

15
290/43

Fluid-current motors

605
290/44

Wind

1538
290/39

Rotary field and armature

8
290/31

Starting and generating dynamo

140
290/34

Engine control

33
290/35

Ignition

9
290/32

With generator

29
290/33

Ignition

6
290/42

Tide and wave motors

437
 

Traction

 
290/9

Electric traction motor

18
290/18

As starter

5
290/19

As generator

5
290/20

Rotary field and armature

4
290/21

Engine control

3
290/14

With generator

44
290/16

Battery

32
290/17

Engine control

46
290/15

Rotary field and armature

5
290/10

With starting and generating dynamo

24
290/13

Ignition

5
290/12

Rotary field and armature

2
290/11

With generator

7
290/27

Electric-starting motor with generator

24
290/28

Electric-starting motor

17
290/29

Rotary field and armature

8
290/22

Starting and generating dynamo

27
290/25

Engine control

2
290/26

Ignition

2
290/23

Rotary field and armature

5
290/24

Engine control

6
290/47

Electric-starting motor with generator

28
290/48

Electric-starting motor

175
290/51

Engine control

54
290/54

Fluid-current motors

912
290/55

Wind

1605
290/2

Heating plants

204
290/1R

Miscellaneous

901
290/1B

Air-cooled generator

87
290/1D

Chain drive

9
290/1C

Drive gearing

106
290/1E

Spring motor

58
290/1A

Unitary plant

445
290/6

Multiple-armature dynamo

30
290/4R

Plural prime mover

148
290/4B

Induction generator

5
290/4D

Plural prime movers with fluid interconnection

27
290/4C

Plural with combined drive

74
290/4A

Tie with another generator

34
290/49

Rotary field and armature

13
290/46

Starting and generating dynamo

134
290/53

Tide and wave motors

703
290/45

Traction

121
290/3

Train

32
290/52

Turbogenerators

643
 
 
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