US3176557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cut-off knife control
Assignee: Beazer East Inc
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Filing: 1962-10-15
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Granted: 1965-04-06
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 John W Drenning
- 👤 James P Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:38
CPC Classifications
B; B23; B23D; B23D36/00; B23D36/0008; B23D36/0033; B23D36/0041; Y; Y10; Y10T; Y10T83/00; Y10T83/141; Y10T83/159; Y10T83/465; Y10T83/4693; Y10T83/4766; Y10T83/4775; Y10T83/4795; Y10T83/483
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
250 words
A DEVICE FOR SELECTIVELY CUTTING A CONTINUOUSLY MOVING WEB OF MATERIAL INTO LENGTHS COMPRISING MEANS FOR FEEDING THE WEB, ROTATABLE MEANS FOR PERIODICALLY CUTTING THE WEB, ADJUSTABLE VARIABLE SPEED MEANS CONNECTED TO SAID WEB FEEDING MEANS AND TO SAID CUTTING MEANS FOR PROVIDING A SELECTED OPERATING SPEED RATIO BETWEEN SAID WEB FEEDING MEANS AND SAID CUTTING MEANS SO THAT THE WEB MAY BE SELECTIVELY CUT INTO LENGTHS WHICH VARY DIRECTLY WITH THE SPEED RATIO, MEANS CONNECTED TO SAID CUTTING MEANS FOR GENERATING A SIGNAL CORRESPONDING TO THE CUTTING SPEED, MEANS CONNECTED TO SAID WEB FEEDING MEANS FOR GENERATING A SIGNAL CORRESPONDING TO THE SPEED OF WEB FEED, MEANS FOR RECEIVING THE SIGNALS SO GENERATED, ADJUSTABLE MEANS FOR SELECTING THE SHEET LENGTH TO BE SEVERED, SAID ADJUSTABLE MEANS BEING OPERATIVELY CONNECTED TO SAID SIGNAL RECEIVING MEANS TO DETERMINE THEREIN A REFERENCE VALUE, SAID SIGNAL RECEIVING MEANS BEING OPERATIVE TO COMPARE THE RELATIVE VALUES OF THE SIGNALS WITH THE REFERENCE VALUE, A NULL SIGNAL RESULTING FROM SUCH COMPARISON WHEN SAID WEB FEEDING MEANS AND SAID CUTTING MEANS OPERATE AT A SPEED RATIO WHEREAT THE SEVERED SHEET LENGTH CORRESPONDS TO THE SELECTED SHEET LENGTH AND AN ERROR SIGNAL RESULTING FROM SUCH COMPARISON WHEN THE SPEED RATIO CHANGES TO SEVER A SHEET LENGTH DEVIATING FROM THE SELECTED SHEET LENGTH AND MEANS CONNECTED TO SAID VARIABLE SPEED MEANS RESPONSIVE TO THE ERROR SIGNAL FOR AUTOMATICALLY RESTORING THE SPEED RATIO TO A VALUE WHEREAT THE SEVERED SHEET LENGTH AGAIN CORRESPONDS SUBSTANTIALLY TO THE SELECTED SHEET LENGTH.
Claim 2
Independent Claim
250 words
A DEVICE FOR SELECTIVELY CUTTING A CONTINUOUSLY MOVING WEB OF MATERIAL INTO LENGTHS COMPRISING MEANS FOR FEEDING THE WEB, ROTATABLE MEANS FOR PERIODICALLY CUTTING THE WEB, ADJUSTABLE VARIABLE SPEED MEANS CONNECTED TO SAID WEB FEEDING MEANS AND TO SAID CUTTING MEANS FOR PROVIDING A SELECTED OPERATING SPEED RATIO BETWEEN SAID WEB FEEDING MEANS AND SAID CUTTING MEANS SO THAT THE WEB MAY BE SELECTIVELY CUT INTO LENGTHS WHICH VARY DIRECTLY WITH THE SPEED RATIO, MEANS CONNECTED TO SAID CUTTING MEANS FOR GENERATING A SIGNAL CORRESPONDING TO THE CUTTING SPEED, MEANS CONNECTED TO SAID WEB FEEDING MEANS FOR GENERATING A SIGNAL CORRESPONDING TO THE SPEED OF WEB FEED, MEANS FOR RECEIVING THE SIGNALS SO GENERATED, ADJUSTABLE MEANS FOR SELECTING THE SHEET LENGTH TO BE SEVERED, SAID ADJUSTABLE MEANS BEING OPERATIVELY CONNECTED TO SAID SIGNAL RECEIVING MEANS TO DETERMINE THEREIN A REFERENCE VALUE, SAID SIGNAL RECEIVING MEANS BEING OPERATIVE TO COMPARE THE RELATIVE VALUES OF THE SIGNALS WITH THE REFERENCE VALUE, A NULL SIGNAL RESULTING FROM SUCH COMPARISON WHEN SAID WEB FEEDING MEANS AND SAID CUTTING MEANS OPERATE AT A SPEED RATIO WHEREAT THE SEVERED SHEET LENGTH CORRESPONDS TO THE SELECTED SHEET LENGTH AND AN ERROR SIGNAL RESULTING FROM SUCH COMPARISON WHEN THE SPEED RATIO CHANGES TO SEVER A SHEET LENGTH DEVIATING FROM THE SELECTED SHEET LENGTH AND MEANS CONNECTED TO SAID VARIABLE SPEED MEANS RESPONSIVE TO THE ERROR SIGNAL FOR AUTOMATICALLY RESTORING THE SPEED RATIO TO A VALUE WHEREAT THE SEVERED SHEET LENGTH AGAIN CORRESPONDS SUBSTANTIALLY TO THE SELECTED SHEET LENGTH.
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |