US3101438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Model train electrical motor control system
Assignee: Individual
•
Filing: 1961-05-01
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Granted: 1963-08-20
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Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 William A Mccall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:18
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/288
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
AN ELECTRIC MOTOR COASTING SYSTEM COMPRISING AN ELECTRIC MOTOR, A NEGATIVE D.C. LEAD CONNECTED TO ONE SIDE OF SAID MOTOR, TRANSISTOR DISPOSED IN SAID NEGATIVE LEAD WITH ITS COLLECTOR CONNECTED TO SAID LEAD AND ITS EMITTER CONNECTED TO SAID MOTOR SIDE, A POSITIVE D.C. LEAD CONNECTED TO THE OTHER SIDE OF SAID MOTOR, A MULTIPLE SELECTOR SWITCH DISPOSED AHEAD OF SAID TRANSISTOR HAVING A SECONDARY TERMINAL CONNECTED TO SAID TRANSISTOR BASE AND A PRIMARY TERMINAL CONNECTED TO SAID POSITIVE D.C. LEAD; A CROSS RESISTANCE DISPOSED BETWEEN SAID SWITCH PRIMARY TERMINAL AND SAID POSITIVE D.C. LEAD, CROSS CAPACITANCE DISPOSED BETWEEN SAID POSITIVE AND NEGATIVE D.C. LEADS AHEAD OF SAID SWITCH, A LINE RESISTANCE IN SAID POSITIVE LEAD AHEAD OF SAID LINE CAPACITANCE; SAID CROSS CAPACTANCE, AND LINE RESISTANCE SMOOTHING OUT THE D.C. CURRENT FLOW TO PREVENT CURRENT LEAKAGE DUE TO RESIDUAL A.C. WAVE UNDULATIONS; SAID SWITCH HAVING MULTIPLE TERTIARY TERMINALS BETWEEN SAID PRIMARY AND SECONDARY TERMINALS, A ROTOR ON SAID SWITCH, A PRIMARY SECTOR ON SAID ROTOR IN CONSTANT CONTACT WITH SAID PRIMARY TERMINAL, A SECONDARY SECTOR ON SAID ROTOR IN CONSTANT CONTACT WITH SAID SECONDARY TERMINAL, TERTIARY LINES BETWEEN SAID TERTIARY TERMINALS AND SAID NEGATIVE D.C. LEAD, CAPACITORS DISPOSED IN SAID TERTIARY LINES; SAID ROTOR AND SECTORS BEING CAPABLE OF SELECTIVE CONNECTING SAID TERTIARY TERMI-
Claim 2
Dependent Claim
215 words
AN ELECTRIC MOTOR COASTING SYSTEM COMPRISING AN ELECTRIC MOTOR, A NEGATIVE D.C. LEAD CONNECTED TO ONE SIDE OF SAID MOTOR, TRANSISTOR DISPOSED IN SAID NEGATIVE LEAD WITH ITS COLLECTOR CONNECTED TO SAID LEAD AND ITS EMITTER CONNECTED TO SAID MOTOR SIDE, A POSITIVE D.C. LEAD CONNECTED TO THE OTHER SIDE OF SAID MOTOR, A MULTIPLE SELECTOR SWITCH DISPOSED AHEAD OF SAID TRANSISTOR HAVING A SECONDARY TERMINAL CONNECTED TO SAID TRANSISTOR BASE AND A PRIMARY TERMINAL CONNECTED TO SAID POSITIVE D.C. LEAD; A CROSS RESISTANCE DISPOSED BETWEEN SAID SWITCH PRIMARY TERMINAL AND SAID POSITIVE D.C. LEAD, CROSS CAPACITANCE DISPOSED BETWEEN SAID POSITIVE AND NEGATIVE D.C. LEADS AHEAD OF SAID SWITCH, A LINE RESISTANCE IN SAID POSITIVE LEAD AHEAD OF SAID LINE CAPACITANCE; SAID CROSS CAPACTANCE, AND LINE RESISTANCE SMOOTHING OUT THE D.C. CURRENT FLOW TO PREVENT CURRENT LEAKAGE DUE TO RESIDUAL A.C. WAVE UNDULATIONS; SAID SWITCH HAVING MULTIPLE TERTIARY TERMINALS BETWEEN SAID PRIMARY AND SECONDARY TERMINALS, A ROTOR ON SAID SWITCH, A PRIMARY SECTOR ON SAID ROTOR IN CONSTANT CONTACT WITH SAID PRIMARY TERMINAL, A SECONDARY SECTOR ON SAID ROTOR IN CONSTANT CONTACT WITH SAID SECONDARY TERMINAL, TERTIARY LINES BETWEEN SAID TERTIARY TERMINALS AND SAID NEGATIVE D.C. LEAD, CAPACITORS DISPOSED IN SAID TERTIARY LINES; SAID ROTOR AND SECTORS BEING CAPABLE OF SELECTIVE CONNECTING SAID TERTIARY TERMI-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |