Patent US1080177A successfully refreshed from Google Patents.
US3261963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic electric fluid heating apparatus
Assignee: COMMERCIAL FACTORS Ltd
•
Filing: 1963-12-06
•
Granted: 1966-07-19
•
Expires: 1983-12-06
Abstract
No abstract record available.
Inventors
- 👤 Weinstein Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:16
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2007; F24H9/2014; F24H9/2028; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1912; G05D23/275; F24H15/00; F24H15/20; F24H15/238
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
AN AUTOMATIC ELECTRICAL FLUID HEATING APPARATUS COMPRISING, A CONDUIT TO RECEIVE THE FLUID THERETHROUGH, A PLURALITY OF ELECTRICAL RESISTORS WITHIN THE CONDUIT FOR HEATING THE FLUID AS IT FLOWS THROUGH THE CONDUIT, A TEMPERATURE SENSITIVE TRANSDUCER WITHIN THE CONDUIT FOR PRODUCING A MECHANICAL MOVEMENT PROPORTIONAL TO THE TEMPERATURE OF THE FLUID IN THE CONDUIT, FOR MAINTAINING THE FLUID TEMPERATURE AT A PREDETERMINED VALUE, A REVERISBLE MOTOR CONNECTED TO A SOURCE OF ELECTRICAL POWER, A CAM SHAFT, A MAGNETIC CLUTCH COUPLING THE SAID CAM SHAFT TO THE MOTOR, A PLURALITY OF CAMS SECURED TO THE SHAFT A FIRST SET OF ELECTRICAL SWITCHING CONTACTS RESPONSIVE TO THE MOVEMENT OF THE TRANSDUCER FOR REVERSING THE MOTOR WHEN THE TEMPERATURE RISES ABOVE A PREDETERMINED VALUE, A SECOND SET OF NORMALLY OPEN CONTACTS OPERATIVELY POSITIONED WITH RESPECT TO THE CAMS, MEANS TO COUPLE THE SECOND CONTACTS TO THE ELECTRICAL RESISTORS FOR SENDING CURRENT THROUGH THE SAID RESISTORS, SAID CAMS BEING ARRANGED FOR SEQUENTIAL OPERATION OF THE SECOND SET OF CONTACTS
Claim 2
Dependent Claim
165 words
AN AUTOMATIC ELECTRICAL FLUID HEATING APPARATUS COMPRISING, A CONDUIT TO RECEIVE THE FLUID THERETHROUGH, A PLURALITY OF ELECTRICAL RESISTORS WITHIN THE CONDUIT FOR HEATING THE FLUID AS IT FLOWS THROUGH THE CONDUIT, A TEMPERATURE SENSITIVE TRANSDUCER WITHIN THE CONDUIT FOR PRODUCING A MECHANICAL MOVEMENT PROPORTIONAL TO THE TEMPERATURE OF THE FLUID IN THE CONDUIT, FOR MAINTAINING THE FLUID TEMPERATURE AT A PREDETERMINED VALUE, A REVERISBLE MOTOR CONNECTED TO A SOURCE OF ELECTRICAL POWER, A CAM SHAFT, A MAGNETIC CLUTCH COUPLING THE SAID CAM SHAFT TO THE MOTOR, A PLURALITY OF CAMS SECURED TO THE SHAFT A FIRST SET OF ELECTRICAL SWITCHING CONTACTS RESPONSIVE TO THE MOVEMENT OF THE TRANSDUCER FOR REVERSING THE MOTOR WHEN THE TEMPERATURE RISES ABOVE A PREDETERMINED VALUE, A SECOND SET OF NORMALLY OPEN CONTACTS OPERATIVELY POSITIONED WITH RESPECT TO THE CAMS, MEANS TO COUPLE THE SECOND CONTACTS TO THE ELECTRICAL RESISTORS FOR SENDING CURRENT THROUGH THE SAID RESISTORS, SAID CAMS BEING ARRANGED FOR SEQUENTIAL OPERATION OF THE SECOND SET OF CONTACTS
References Cited (Backward Citations)
US1920284A
Cited
DE726434C
Cited
US2553212A
Cited
US2700505A
Cited
US2788416A
Cited
US2993106A
Cited
US3165625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |