US3244418A
Expired / Lapsed
US
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Edge sensing device
Assignee: Individual
•
Filing: 1963-11-26
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Granted: 1966-04-05
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Expires: 1983-11-26
Abstract
No abstract record available.
Inventors
- 👤 James G Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:10
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/02; B65H23/032; B65H23/0204; B65H23/0208; B65H7/00; B65H7/02; B65H7/06; B65H7/10; Y; Y10; Y10T; Y10T83/00; Y10T83/525; Y10T83/536
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
AN EDGE SENSING DEVICE FOR A SHEET COMPRISING: (A) AN ELECTRICAL CONTROL APPARATUS FOR RESTORING A WORK PROCESS TO A PREDETERMINED CONDITION, (B) A SENSING FINGER FOR DETERMINING THE CONDITION OF SAID PROCESS, (C) FIRST SWITCH MEANS ADAPTED TO BE OPENED BY SAID FINGER WHEN SAID PREDETERMINED CONDITION HAS BEEN ESTABLISHED AND TO CLOSE SAID FIRST SWITCH MEANS TO DEVIATION IN SAID CONDITION, (D) A FIRST ELECTRONIC VALVE, (E) MEANS FOR NORMALLY BIASING SAID FIRST VALVE SO IT WILL NOT CONDUCT, (F) SAID FIRST SWITCH MEANS BEING CONNECTED TO SAID FIRST VALVE TO REDUCED SAID BIAS SO SAID FIRST VALVE WILL CONDUCT,
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |