Patent US3353520A successfully refreshed from Google Patents.
US3353520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for heating the cylinders of diesel engines
Assignee: Robert Bosch GmbH
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Filing: 1965-09-08
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Granted: 1967-11-21
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Expires: 1985-09-08
Abstract
No abstract record available.
Inventors
- 👤 Haag Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:42
CPC Classifications
F; F02; F02P; F02P19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
AN ARRANGEMENT FOR HEATING AIR WHICH IS SUCKED INTO A DIESEL ENGINE, COMPRISING AN AIR CONVEYING PIPE; A GLOW PLUG COMPRISING ELECTRIC HEATING MEANS AND NOZZLE MEANS POSITIONED TO EXCHANGE HEAT WITH SAID HEATING MEANS AND DISCHARGING INTO SAID PIPE; CONDUIT MEANS FOR SUPPLYING FUEL TO SAID NOZZLE MEANS SO THAT SUCH FUEL IS HEATED AND PRODUCES FLAMES ON ENTRY INTO SAID PIPE; NORMALLY CLOSED ELECTRIC VALVE MEANS PROVIDED IN SAID CONDUIT MEANS; A SOURCE OF ELECTRICAL ENERGY; SWITCH MEANS ARRANGED TO BE CLOSED AND TO THEREBY CONNECT SAID HEATING HEANS IN CIRCUIT WITH SAID SOURCE; AND CONTROL MEANS INCLUDING MEANS FOR INTERMITTENTLY OPENING AND CLOSING SAID VALVE MEANS IN RESPONSE TO COMPLETION OF SAID CIRCUIT SO AS TO PRODUCE INTERMITTENT FLAMES.
Claim 2
Dependent Claim
122 words
AN ARRANGEMENT FOR HEATING AIR WHICH IS SUCKED INTO A DIESEL ENGINE, COMPRISING AN AIR CONVEYING PIPE; A GLOW PLUG COMPRISING ELECTRIC HEATING MEANS AND NOZZLE MEANS POSITIONED TO EXCHANGE HEAT WITH SAID HEATING MEANS AND DISCHARGING INTO SAID PIPE; CONDUIT MEANS FOR SUPPLYING FUEL TO SAID NOZZLE MEANS SO THAT SUCH FUEL IS HEATED AND PRODUCES FLAMES ON ENTRY INTO SAID PIPE; NORMALLY CLOSED ELECTRIC VALVE MEANS PROVIDED IN SAID CONDUIT MEANS; A SOURCE OF ELECTRICAL ENERGY; SWITCH MEANS ARRANGED TO BE CLOSED AND TO THEREBY CONNECT SAID HEATING HEANS IN CIRCUIT WITH SAID SOURCE; AND CONTROL MEANS INCLUDING MEANS FOR INTERMITTENTLY OPENING AND CLOSING SAID VALVE MEANS IN RESPONSE TO COMPLETION OF SAID CIRCUIT SO AS TO PRODUCE INTERMITTENT FLAMES.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |