Patent US3097993A successfully refreshed from Google Patents.
US3097993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatic knock-off shower for paper machine
Assignee: Library and Archives Canada
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Filing: 1961-05-23
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Granted: 1963-07-16
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Expires: 1981-05-23
Abstract
No abstract record available.
Inventors
- 👤 Denis A Goddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:17
CPC Classifications
D; D21; D21F; D21F7/00; D21F7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN A PAPER MACHINE HAVING A COUCH ROLL, A FOURDRINIER WIRE CARRIED THEREBY AND A VACUUM CHAMBER, THE COMBINATION COMPRISING A NORMALLY NON-OPERATION SHOWER ADAPTED TO BE ACTUATED TO PREVENT THE PAPER WEB FROM CLINGING TO SAID WIRE IN THE EVENT OF BREAKAGE OF SAID PAPER WEB AND A VACUUM SENSOR MEANS ADJACENT SAID WIRE AND CONNECTED TO SAID VACUUM CHAMBER, MEANS FOR CONTROLLING THE SUPPLY OF WATER TO SAID SHOWER SAID MEANS BEING ADAPTED TO BE ACTUATED UPON BLOCKAGE OF SAID VACUUM SENSOR UPON BREAKAGE OF SAID PAPER WEB, SAID VACUM SENSOR MEANS BEING POSITIONED AT SAID COUCH ROLL AND SAID SHOWER BEING POSITIONED ADJACENT SAID COUCH ROLL.
Claim 2
Dependent Claim
109 words
IN A PAPER MACHINE HAVING A COUCH ROLL, A FOURDRINIER WIRE CARRIED THEREBY AND A VACUUM CHAMBER, THE COMBINATION COMPRISING A NORMALLY NON-OPERATION SHOWER ADAPTED TO BE ACTUATED TO PREVENT THE PAPER WEB FROM CLINGING TO SAID WIRE IN THE EVENT OF BREAKAGE OF SAID PAPER WEB AND A VACUUM SENSOR MEANS ADJACENT SAID WIRE AND CONNECTED TO SAID VACUUM CHAMBER, MEANS FOR CONTROLLING THE SUPPLY OF WATER TO SAID SHOWER SAID MEANS BEING ADAPTED TO BE ACTUATED UPON BLOCKAGE OF SAID VACUUM SENSOR UPON BREAKAGE OF SAID PAPER WEB, SAID VACUM SENSOR MEANS BEING POSITIONED AT SAID COUCH ROLL AND SAID SHOWER BEING POSITIONED ADJACENT SAID COUCH ROLL.
References Cited (Backward Citations)
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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) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |