US3221116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition system for internal combustion engines
Assignee: Individual
•
Filing: 1962-07-24
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Granted: 1965-11-30
•
Expires: 1982-07-24
Abstract
No abstract record available.
Inventors
- 👤 Don M Mcallister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:49
CPC Classifications
F; F02; F02P; F02P7/00; H; H01; H01H; H01H1/00; H01H1/12; H01H1/36; H01H1/365; H01H19/00; H01H19/54; H01H19/60; H01H19/62; H01H19/635; H01H3/00; H01H3/32; H01H3/42; Y; Y10; Y10S; Y10S200/00; Y10S200/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A SWITCHING DEVICE FOR INTERNAL COMBUSTION ENGINES COMPRISING A MOUNTING PLATE PROVIDING PIVOT MEANS, A RELATIVELY ROTATABLE SHAFT EXTENDING BEYOND SAID PLATE AND CARRYING CAM MEANS INCLUDING A PLURALITY OF CAM SURFACES, A PAIR OF INDEPENDENTLY MOVABLE ARMS MOUNTED ON SAID PIVOT MEANS AND PROVIDING FOLLOWERS ENGAGING SAID CAM MEANS, SAID FOLLOWERS LYING IN THE PATH TRAVERSED BY SAID CAM SURFACES AND SPACED APART ALONG SAID PATH BY A DISTANCE LESS THAN THE LENGTH OF ONE OF SAID CAM SURFACES, EACH OF SAID ARMS CARRYING A PAIR OF CONTACTS TO PRODUCE A PAIR FO GAPS, ROTATION OF SAID SHAFT SUCCESSIVELY OPENING AND CLOSING SAID GAPS.
References Cited (Backward Citations)
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Cited
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FR1077428A
Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |