US3332404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual engine
Assignee: Individual
•
Filing: 1965-02-15
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Granted: 1967-07-25
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Expires: 1985-02-15
Abstract
No abstract record available.
Inventors
- 👤 Charles L Lovercheck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:50
CPC Classifications
F; F02; F02B; F02B61/00; F02B61/04; F02B73/00; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; F02B2275/00; F02B2275/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
AN ENGINE COMPRISING A FIRST CRANKSHAFT AND A SECOND CRANKSHAFT, SAID ENGINE HAVING A CRANKCASE MADE OF TWO SEPARABLE HALVES, EACH SAID HALF HAVING MEANS TO SUPPORT A PART OF EACH OF THE MAIN BEARINGS FOR SAID CRANKSHAFTS, AND MEANS TO FIX SAID TWO HALVES TOGETHER WHEREBY SAID CRANKSHAFTS ARE SUPPORTED BY SAID MAIN BEARINGS, SEALING MEANS ON SAID CRANKCASE SEPARATING SAID CRANKSHAFTS INTO SEPARATE SEALED COMPARTMENTS, TWO OIL SUPPLIES, ONE IN EACH SAID COMPARTMENT, A FIRST AND A SECOND OIL CIRCULATING MEANS, MEANS CONNECTED TO A FIRST HALF OF SAID CRANKCASE FOR OPERATING SAID FIRST OIL CIRCULATING MEANS, AND MEANS CONNECTING SAID SECOND OIL CIRCULATING MEANS TO A SECOND HALF OF SAID CRANKCASE.
Claim 2
Dependent Claim
114 words
AN ENGINE COMPRISING A FIRST CRANKSHAFT AND A SECOND CRANKSHAFT, SAID ENGINE HAVING A CRANKCASE MADE OF TWO SEPARABLE HALVES, EACH SAID HALF HAVING MEANS TO SUPPORT A PART OF EACH OF THE MAIN BEARINGS FOR SAID CRANKSHAFTS, AND MEANS TO FIX SAID TWO HALVES TOGETHER WHEREBY SAID CRANKSHAFTS ARE SUPPORTED BY SAID MAIN BEARINGS, SEALING MEANS ON SAID CRANKCASE SEPARATING SAID CRANKSHAFTS INTO SEPARATE SEALED COMPARTMENTS, TWO OIL SUPPLIES, ONE IN EACH SAID COMPARTMENT, A FIRST AND A SECOND OIL CIRCULATING MEANS, MEANS CONNECTED TO A FIRST HALF OF SAID CRANKCASE FOR OPERATING SAID FIRST OIL CIRCULATING MEANS, AND MEANS CONNECTING SAID SECOND OIL CIRCULATING MEANS TO A SECOND HALF OF SAID CRANKCASE.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |