US3310062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web tensioning device
Assignee: International Business Machines Corp
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Filing: 1965-05-27
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Granted: 1967-03-21
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Expires: 1985-05-27
Abstract
No abstract record available.
Inventors
- 👤 John B Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:47
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/135; D; D06; D06B; D06B3/00; D06B3/10; D06B3/20; D06B3/201; D06B3/34; D06B3/345; G03D3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A WEB TENSIONING APPARATUS COMPRISING: (A) MEANS FOR GUIDING THE WEB TO FORM A FREELY HANGING PENDULOUS LOOP THEREIN; (B) A PAIR OF WALLED MEMBERS STRADDLING THE EDGES OF THE WEB, COEXTENSIVE WITH THE LOOP THEREIN, AND SPACED APART A DISTANCE EQUAL TO THE WIDTH OF THE WEB TO FORM, TOGETHER WITH THE WEB, A LIQUID-RETAINING CHAMBER; (C) AND MEANS FOR INDUCING A CONTINUOUS FLOW OF LIQUID INTO THE CHAMBER FORMED BY SAID WALLED MEMBERS AND SAID LOOPS; WHEREBY A VOLUME OF LIQUID WILL BE ENTRAPPED IN SAID CHAMBER TO TENSION THE WEB, AND THE LOOP WILL AUTOMATICALLY SAG UNDER THE WEIGHT OF THE ENTRAPPED LIQUID TO A POSITION BENEATH THE SAID WALLED MEMBERS WHEREIN THE OPENINGS THUS PRODUCED WILL PROVIDE AN EFFLUX OF LIQUID FROM SAID CHAMBER EQUAL TO THE FLOW OF LIQUID INDUCED THEREINTO.
Claim 2
Dependent Claim
136 words
A WEB TENSIONING APPARATUS COMPRISING: (A) MEANS FOR GUIDING THE WEB TO FORM A FREELY HANGING PENDULOUS LOOP THEREIN; (B) A PAIR OF WALLED MEMBERS STRADDLING THE EDGES OF THE WEB, COEXTENSIVE WITH THE LOOP THEREIN, AND SPACED APART A DISTANCE EQUAL TO THE WIDTH OF THE WEB TO FORM, TOGETHER WITH THE WEB, A LIQUID-RETAINING CHAMBER; (C) AND MEANS FOR INDUCING A CONTINUOUS FLOW OF LIQUID INTO THE CHAMBER FORMED BY SAID WALLED MEMBERS AND SAID LOOPS; WHEREBY A VOLUME OF LIQUID WILL BE ENTRAPPED IN SAID CHAMBER TO TENSION THE WEB, AND THE LOOP WILL AUTOMATICALLY SAG UNDER THE WEIGHT OF THE ENTRAPPED LIQUID TO A POSITION BENEATH THE SAID WALLED MEMBERS WHEREIN THE OPENINGS THUS PRODUCED WILL PROVIDE AN EFFLUX OF LIQUID FROM SAID CHAMBER EQUAL TO THE FLOW OF LIQUID INDUCED THEREINTO.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |