Manual of U.S. Patent Classification
as of June 30, 2000

Class
363
ELECTRIC POWER CONVERSION SYSTEMS

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Subclass definitions may be accessed by clicking on the subclass number, below.

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Subclass		Title
ClassTitle		===> ELECTRIC POWER CONVERSION SYSTEMS
1		CASCADED OR COMBINED, DIVERSE CONVERSIONS IN WHICH THE FREQUENCY OR PHASE OR COMBINED CONVERSION IS WITHOUT INTERMEDIATE CONVERSION TO D.C.
2		. Current and phase (e.g., D.C.-Ph1-Ph2)
3		. . Phase 1 to phase 2 to D.C.
4		. . . Single phase to polyphase to D.C.
5		. . . With interphase transformer
6		. . . . Including plural anode/single cathode device
7		. . . With dynamic rectifier in phase 2 to D.C. stage (e.g., commutator type)
8		. Current and frequency (e.g., f1-f2-D.C.)
9		. Combined phase and frequency conversion (i.e., Ph1f1-Ph2f2)
10		. . By semiconductor device converter
11		. . By electron tube converter
12		. . By saturable reactor converter
13		CURRENT CONVERSION
14		. Cryogenic
15		. Including D.C.-A.C.-D.C. converter
16		. . Having transistorized inverter
17		. . . Bridge type
18		. . . Single ended self oscillating type
19		. . . . With automatic control of the magnitude of the output voltage or current
20		. . . Single ended separately driven type
21		. . . . With automatic control of the magnitude of the output voltage or current
22		. . . Double ended (i.e., push-pull) self oscillating tye
23		. . . . With automatic control of the magnitude of the output voltage or current
24		. . . Double ended (i.e., push-pull) separately driven type
25		. . . . With automatic control of the magnitude of the output voltage or current
26		. . . . . Using pulse with modulation
27		. . Having thyristor inverter (e.g., SCR)
28		. . . With automatic control of the magnitude of the output voltage or current
29		. . Having electron tube inverter
30		. . . Single ended type
31		. . . Double ended type (i.e., push-pull)
32		. . Rotary-commutator-type inverter
33		. . Vibrator-type inverter
34		. Including an A.C.-D.C.-A.C. converter
35		. . For transfer of power via a high voltage D.C. link (i.e., HVDC transmission system)
36		. . For change of phase (e.g., number of phases)
37		. . By semiconductor rectifier and inverter
38		. . By electron tube rectifier and inverter
39		. With means to introduce or eliminate frequency components
40		. . In inverter systems
41		. . . By pulse modulation technique (e.g., PWM, PPM, etc.)
42		. . . . Including notching
43		. . . By step-wave, amplitude summation technique
44		. . In rectifier systems
45		. . . Including means for reducing ripples from the output
46		. . . . With ripple responsive, automatic control
47		. . . . With low pass L or LC filter
48		. . . . . For semiconductor rectifier
49		. With starting arrangement
50		. Including automatic or integral protection means
51		. . For high voltage D.C. transmission systems
52		. . For rectifiers
53		. . . Semiconductor type
54		. . . . Thyristor
55		. . For inverters
56		. . . Semiconductor type
57		. . . . Thyristor
58		. . . . . Bridge
59		. With voltage multiplication means (i.e., V out > V in)
60		. . Including semiconductor means
61		. . . For rectifying
62		. With voltage division by storage type impedance (i.e., V out)
63		. With means to selectively provide D.C. of either polarity
64		. With interphase transformer
65		. Having plural converters for single conversion
66		. . Including plural anodes and single cathode (e.g., vapor arc device)
67		. . Plural rectifiers
68		. . . In series (e.g., series SCR's, bridge circuits, etc.)
69		. . . In parallel
70		. . . . Including semiconductor device
71		. . Plural inverters
72		. . . Master-slave
73		. Constant current to constant voltage or vice versa
74		. With condition responsive means to control the output voltage or current
75		. . Including inductive integral sensing and control means (e.g., ferroresonant circuit)
76		. . Including integral sensing and control means for rectifier
77		. . . With semiconductor conversion means
78		. . Cooperating separate sensing and control means
79		. . . Including plural sensing or control means
80		. . . . With transistor as control means in the line circuit
81		. . . . By rectifier
82		. . . . . With inductive control means in the line circuit
83		. . . . . With electron tube or valve as control means in the line circuit
84		. . . For rectifier system
85		. . . . With thyristor control means in the line circuit
86		. . . . . External to rectifier (e.g., pre or post regulation)
87		. . . . . For plural phase to D.C. rectifier
88		. . . . . For full wave rectifier with at least 1 three electrode device
89		. . . . With transistor control means in the line circuit
90		. . . . With inductive control means in the line circuit
91		. . . . . Saturable reactor (e.g., magnetic amplifier)
92		. . . . . . In plural phase to D.C. system
93		. . . . . . With plural control windings
94		. . . . With electron tube or valve control means in the line circuit
95		. . . For inverter
96		. . . . With thyristor control means in the line circuit
97		. . . . With transistor control means in the line circuit
98		. . . . . For bridge-type inverter
99		. . . . With electron tube or valve control means in the line circuit
100		. With manual control of the output voltage or current
101		. With auxiliary bucking or boosting EMF
102		. Using dynamoelectric machine converter
103		. . Plural collector type
104		. . . Having plural field windings
105		. . . Having auxiliary motor drive
106		. By circuit interrupter type
107		. . Rotating
108		. . . Rectifier (i.e., A.C.-D.C.)
109		. . . Inverter (i.e., D.C.-A.C.)
110		. . Vibrating
111		. Using electronic tube converter
112		. . With gap in open atmosphere
113		. . With cathode element control
114		. . In rectifier systems
115		. . . With retarding or delaying control means
116		. . . With discharge control means (e.g., grid)
117		. . . . D.C. bias control
118		. . . . Phase angle control
119		. . . . Particular waveform grid excitation
120		. . In inverter systems
121		. . . With discharge control means (e.g., grid)
122		. . . . Grid-like electrode
123		. Using semiconductor-type converter
124		. . In chopper converter systems
125		. . In rectifier systems
126		. . . Diode
127		. . . Transistor
128		. . . Thyristor
129		. . . . Plural phase to D.C.
130		. . . . With magnetic control means
131		. . In transistor inverter systems
132		. . . Bridge type
133		. . . Double ended (i.e., push-pull) type
134		. . . . Separately driven
135		. . In thyristor inverter systems
136		. . . Bridge type
137		. . . . D.C. to plural phase
138		. . . . . With commutation means
139		. . . Double ended (i.e., push-pull) type
140		. Using impedance-type converter
141		. With cooling means
142		. With means to connect the input to diverse power sources
143		. . 110/220 Volts A.C. in, constant 110 Volts D.C. out
144		. With conductive support mounting
145		. . Adapted for use with alternators
146		. Encased in plug housing
147		. Integrated circuit
148		PHASE CONVERSION (Ph1-Ph2) WITHOUT INTERMEDIATE CONVERSION TO D.C.
149		. With automatic voltage magnitude or phase angle control
150		. By dynamoelectric machine converter
151		. By electron tube converter
152		. By induction-type converter
153		. . Transformer type
154		. . . Stationary
155		. . . . With passive phase shift element
156		. By passive phase shift elements
157		FREQUENCY CONVERSION (f1-f2) WITHOUT INTERMEDIATE CONVERSION TO D.C.
158		. By varactor
159		. By semiconductor converter
160		. . Thyristor type
161		. . . Positive and negative groups
162		. . . . Including blanking or inhibiting means
163		. . Transistor type
164		. With automatic voltage magnitude control
165		. With automatic frequency control
166		. By electron tube converter
167		. . With discharge control means
168		. . . Including plural anodes and single cathode device (e.g., vapor arc device)
169		. . . Thyratron type
170		. By induction-type converter
171		. . Transformer
172		. . . Saturable core
173		. . LC circuit
174		. . Dynamoelectric machine
175		. . . Motor generator type
176		. . . Including induction motor
177		. By circuit interrupter converter
178		MISCELLANEOUS

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Last Modified: 6 October 2000