US3188618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive lockout control for oil and water baths
Assignee: Individual
•
Filing: 1962-05-21
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Granted: 1965-06-08
•
Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 John C Rentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:46
CPC Classifications
G; G08; G08B; G08B19/00; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1909; G05D23/275
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A POWER CONTROL DEVICE OF THE CHARACTER DESCRIBED COMPRISING IN COMBINATION TWO TERMINAL POWER INPUT MEANS, TWO TERMINAL POWER OUTPUT MEANS, CONTROL CIRCUIT MEANS INTERCONNECTING SAID POWER INPUT AND OUTPUT MEANS, SAID CONTROL CIRCUIT MEANS CONSISTING OF A DIRECT CURRENT SUPPLY, A THERMAL SWITCH, A SINGLE POLE RELAY AND A TWO POLE DOUBLE THROW RELAY, SAID DIRECT CURRENT SUPPLY, THERMAL SWITCH AND THE COIL OF SAID SINGLE POLE RELAY BEING SERIALLY CONNECTED, THE POLE OF SAID SINGLE POLE RELAY BEING CONNECTED TO ONE TERMINAL OF SAID TWO TERMINAL INPUT MEANS AND TO A FIRST POLE OF SAID TWO POLE RELAY, THE CONTACT OF SAID SINGLE POLE RELAY CONNECTED TO THE OTHER TERMINAL OF SAID TWO TERMINAL INPUT MEANS THROUGH THE COIL OF SAID TWO POLE RELAY, A SECOND POLE OF SAID TWO POLE RELAY CONNECTED TO SAID OTHER TERMINAL OF SAID TWO TERMINAL INPUT MEANS, SAID FIRST AND SECOND POLES NORMALLY IN CONTACT WITH A PAIR OF CONTACTS CONNECTED TO SAID TWO TERMINAL OUTPUT MEANS, A SECOND PAIR OF CONTACTS CONNECTED TO AN INDICATING LAMP, SAID SINGLE POLE RELAY IN RESPONSE TO THE CLOSING
Claim 2
Dependent Claim
184 words
A POWER CONTROL DEVICE OF THE CHARACTER DESCRIBED COMPRISING IN COMBINATION TWO TERMINAL POWER INPUT MEANS, TWO TERMINAL POWER OUTPUT MEANS, CONTROL CIRCUIT MEANS INTERCONNECTING SAID POWER INPUT AND OUTPUT MEANS, SAID CONTROL CIRCUIT MEANS CONSISTING OF A DIRECT CURRENT SUPPLY, A THERMAL SWITCH, A SINGLE POLE RELAY AND A TWO POLE DOUBLE THROW RELAY, SAID DIRECT CURRENT SUPPLY, THERMAL SWITCH AND THE COIL OF SAID SINGLE POLE RELAY BEING SERIALLY CONNECTED, THE POLE OF SAID SINGLE POLE RELAY BEING CONNECTED TO ONE TERMINAL OF SAID TWO TERMINAL INPUT MEANS AND TO A FIRST POLE OF SAID TWO POLE RELAY, THE CONTACT OF SAID SINGLE POLE RELAY CONNECTED TO THE OTHER TERMINAL OF SAID TWO TERMINAL INPUT MEANS THROUGH THE COIL OF SAID TWO POLE RELAY, A SECOND POLE OF SAID TWO POLE RELAY CONNECTED TO SAID OTHER TERMINAL OF SAID TWO TERMINAL INPUT MEANS, SAID FIRST AND SECOND POLES NORMALLY IN CONTACT WITH A PAIR OF CONTACTS CONNECTED TO SAID TWO TERMINAL OUTPUT MEANS, A SECOND PAIR OF CONTACTS CONNECTED TO AN INDICATING LAMP, SAID SINGLE POLE RELAY IN RESPONSE TO THE CLOSING
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |