Patent US3371331A successfully refreshed from Google Patents.
US3371331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detection system for sheets of paper or the like
Assignee: Mailmen Inc
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Filing: 1965-07-12
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Granted: 1968-02-27
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Expires: 1985-07-12
Abstract
No abstract record available.
Inventors
- 👤 Buckholz Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:30
CPC Classifications
B; B65; B65H; B65H7/00; B65H7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A NO-SHEET AND MULTIPLE-SHEET DETECTOR COMPRISING A VOLTAGE SOURCE, A FIXED METAL ROLLER MOUNTED IN THE PATH OF A SHEET, A MOVABLE METAL ROLLER CARRIED ON A PIVOTED LEVER, MEANS URGNG THE MOVABLE ROLLER INTO CONTACT WITH THE FIXED ROLLER, A CONTACT CARRIED AND MOVED BY THE PIVOTED LEVER, A FIXED CONTACT ENGAGED BY SAID MOVABLE CONTACT WHEN SAID MOVABLE ROLLER IS MOVED AWAY FROM THE FIXED ROLLER BY MULTIPLE SHEETS PASSING THEREBETWEEN, SAID FIXED ROLLER BEING ELECTRICALLY CONNECTED TO SAID FIXED CONTACT AND BOTH TO SAID VOLTAGE SOURCE, THE MOVABLE ROLLER
Claim 2
Dependent Claim
92 words
A NO-SHEET AND MULTIPLE-SHEET DETECTOR COMPRISING A VOLTAGE SOURCE, A FIXED METAL ROLLER MOUNTED IN THE PATH OF A SHEET, A MOVABLE METAL ROLLER CARRIED ON A PIVOTED LEVER, MEANS URGNG THE MOVABLE ROLLER INTO CONTACT WITH THE FIXED ROLLER, A CONTACT CARRIED AND MOVED BY THE PIVOTED LEVER, A FIXED CONTACT ENGAGED BY SAID MOVABLE CONTACT WHEN SAID MOVABLE ROLLER IS MOVED AWAY FROM THE FIXED ROLLER BY MULTIPLE SHEETS PASSING THEREBETWEEN, SAID FIXED ROLLER BEING ELECTRICALLY CONNECTED TO SAID FIXED CONTACT AND BOTH TO SAID VOLTAGE SOURCE, THE MOVABLE ROLLER
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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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |