US3784880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for effecting pulse-wise control over a direct current motor
Assignee: Individual
•
Filing: 1971-08-02
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Granted: 1974-01-08
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Expires: 1991-08-02
Abstract
Abstract Systems for effecting control over direct-current electric drives, and, more particularly, to pulse-type control means included into the circuits of the armature windings of motors. Apparatus for effecting pulse-wise control over a direct-current motor, consists in connecting the winding of the armature of the motor in parallel with two opposing rectifiers through limiting saturation chokes, thyristors and power diodes, the thyristors being electrically connected to each other through a two-windings transformer and capacitor means, the inputs of the recrifiers being connected to the secondary windings of the supply transformer.
Inventors
- 👤 V Stakhno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:27
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/29
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
117 words
An apparatus for effecting pulse-wise control over a direct current motor through the armature winding thereof, comprising two rectifiers each having a positive terminal connected to an opposite side of said armature winding; a series circuit comprising limiting saturation choke means and power thyristors connected respectively between said positive rectifier terminals and said armature winding and connected directly to the negative terminals of the other rectifier; diodes in parallel and oppositely connectedto said series circuit; capacitors respectively connected in series with said choke means and in parallel with said power thyristors; and a two-winding transformer means having each winding thereof respectively connected with one of said power thyristors for electromagnetically coupling said power thyristors with each other.
Claim 2
Independent Claim
117 words
An apparatus for effecting pulse-wise control over a direct current motor through the armature winding thereof, comprising two rectifiers each having a positive terminal connected to an opposite side of said armature winding; a series circuit comprising limiting saturation choke means and power thyristors connected respectively between said positive rectifier terminals and said armature winding and connected directly to the negative terminals of the other rectifier; diodes in parallel and oppositely connectedto said series circuit; capacitors respectively connected in series with said choke means and in parallel with said power thyristors; and a two-winding transformer means having each winding thereof respectively connected with one of said power thyristors for electromagnetically coupling said power thyristors with each other.
Claim 3
Dependent Claim
42 words
An apparatus as claimed in claim 1, said capacitors being respectively connected between the anodes of said power thyristors and to a side of said windings, said power thyristors having the cathodes thereof respectively connected to the other side of said windings.
Claim 4
Dependent Claim
35 words
An apparatus as claimed in claim 1, each of the windings of said two-windng transformer means and each of said capacitors forming a series circuit connected respectively in parallel with one of said power thyristors.
Claim 5
Dependent Claim
25 words
An apparatus as claimed in claim 1, with said capacitors connected respectively in parallel with said power thyristors, and said windings respectively connected in series.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |