Patent US3220057A successfully refreshed from Google Patents.
US3220057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of sheet materials
Assignee: Individual
•
Filing: 1961-10-27
•
Granted: 1965-11-30
•
Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
- 👤 Richard R Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:35
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/12; B31F1/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A MACHINE FOR LONGITUDINALLY CREPING A CONTINUOUS WEB WHICH COMPRISES A CURVED ROLL COMPOSED OF A SERIES OF SIDE-BY-SIDE ROTATABLE ELEMENTS, REVOLUABLE ON A CURVED AXIS ABOUT WHICH SAID WEB IS PASSED FROM THE CONVEX TO THE CONCAVE SIDE THEREOF, SAD ELEMENTS ADAPTED TO GATHER SAID WEB WIDTHWISE WITH STRESSES AND STRAINS SUBSTANTIALLY EQUALIZED ACROSS THE WIDTH OF THE WEB, AT LEAST ONE PAIR OF INTERMESHING CIRCUMFERENTIALLY GROOVED ROLLS SPACED FROM SAID CONCAVE SIDE, MEANS FOR DRAWING SAID WEB BETWEEN SAID INTERMESHING ROLLS AFTER IT LEAVES SAID FIRST-NAMED ROLL, AND A PAIR OF SMOOTH SQUEEZE ROLLS ARRANGED TO RECEIVE SAID WEB WHEN IT IS DISCHARGED FROM SAID INTERMESHING ROLLS TO CRUSH THE CORRUGATIONS WHICH HAVE BEEN FORMED THEREIN.
Claim 2
Dependent Claim
118 words
A MACHINE FOR LONGITUDINALLY CREPING A CONTINUOUS WEB WHICH COMPRISES A CURVED ROLL COMPOSED OF A SERIES OF SIDE-BY-SIDE ROTATABLE ELEMENTS, REVOLUABLE ON A CURVED AXIS ABOUT WHICH SAID WEB IS PASSED FROM THE CONVEX TO THE CONCAVE SIDE THEREOF, SAD ELEMENTS ADAPTED TO GATHER SAID WEB WIDTHWISE WITH STRESSES AND STRAINS SUBSTANTIALLY EQUALIZED ACROSS THE WIDTH OF THE WEB, AT LEAST ONE PAIR OF INTERMESHING CIRCUMFERENTIALLY GROOVED ROLLS SPACED FROM SAID CONCAVE SIDE, MEANS FOR DRAWING SAID WEB BETWEEN SAID INTERMESHING ROLLS AFTER IT LEAVES SAID FIRST-NAMED ROLL, AND A PAIR OF SMOOTH SQUEEZE ROLLS ARRANGED TO RECEIVE SAID WEB WHEN IT IS DISCHARGED FROM SAID INTERMESHING ROLLS TO CRUSH THE CORRUGATIONS WHICH HAVE BEEN FORMED THEREIN.
References Cited (Backward Citations)
US1921455A
Cited
US2055877A
Cited
US2245014A
Cited
US2130007A
Cited
US2257429A
Cited
GB521149A
Cited
US2335313A
Cited
US2429706A
Cited
US2995481A
Cited
US3014832A
Cited
US2915109A
Cited
FR1248905A
Cited
US3040379A
Cited
US3071917A
Cited
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 |