Patent US3441718A successfully refreshed from Google Patents.
US3441718A
Expired / Lapsed
US
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Stroke counting system for machine operations
Assignee: National Screw and Manufacturing Co
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Filing: 1966-04-06
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Granted: 1969-04-29
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Expires: 1986-04-06
Abstract
No abstract record available.
Inventors
- 👤 George A Hatherell
- 👤 John K Frantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:46
CPC Classifications
H; H03; H03K; H03K21/00; H03K21/02; G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/225; G07; G07C; G07C3/00; G07C3/08; G07C3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN A MACHINE FOR PERFORMING OPERATIONS ON PARTS, THE MACHINE HAVING A CHARACTERISTIC MAIN WORK BLOW AND WORK CYCLE, AND THE MACHINE HAVING A PORTION WHICH UNDERGOES MINUTE DIMENSIONAL CHANGES, THE MOST PRONOUNCED CHANGES OCCURRING DURING WORK BLOWS, THE COMBINATION OF: A STRAIN GAUGE TO BE MOUNTED ON THE AFOREMENTIONED PORTION OF THE MACHINE AND ADAPTED TO UNDERGO CHANGES IN RESISTANCE CONFORMING TO THE DIMENSIONAL CHANGES THEREOF;
Claim 2
Dependent Claim
67 words
IN A MACHINE FOR PERFORMING OPERATIONS ON PARTS, THE MACHINE HAVING A CHARACTERISTIC MAIN WORK BLOW AND WORK CYCLE, AND THE MACHINE HAVING A PORTION WHICH UNDERGOES MINUTE DIMENSIONAL CHANGES, THE MOST PRONOUNCED CHANGES OCCURRING DURING WORK BLOWS, THE COMBINATION OF: A STRAIN GAUGE TO BE MOUNTED ON THE AFOREMENTIONED PORTION OF THE MACHINE AND ADAPTED TO UNDERGO CHANGES IN RESISTANCE CONFORMING TO THE DIMENSIONAL CHANGES THEREOF;
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) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |