Patent US3544909A successfully refreshed from Google Patents.
US3186902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-stressed cantilevered fourdrinier for paper machines
Assignee: Library and Archives Canada
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Filing: 1962-08-16
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Granted: 1965-06-01
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Expires: 1982-08-16
Abstract
No abstract record available.
Inventors
- 👤 Grater Vivian Somers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:39
CPC Classifications
D; D21; D21F; D21F7/00; D21F7/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A PAPER MACHINE FOURDRINIER OF THE TYPE INCLUDING, TRANSVERSE BEAM MEANS, FULCRUM PAD MEANS SUPPORTING ONE END OF SAID TRANSVERSE BEAM MEANS, AND SUPPORTING MEANS FOR SUPPORTING THE OPPOSITE END OF SAID TRANSVERSE BEAM MEANS, THE IMPROVEMENT COMPRISING SECURING MEANS FOR SECURING SAID OPPOSITE END OF SAID TRANSVERSE BEAM MEANS TO SAID SUPPORTING MEANS, WITH SAID TRANSVERSE BEAM MEANS BEING PRE-STREES TO PROVIDE A CLEARANCE BETWEEN SAID OPPOSITE END OF SAID TRANSVERSE BEAM MEANS AND SAID SUPPORTING MEANS WHEN SAID SECURING MEANS IS RELEASED.
Claim 2
Dependent Claim
85 words
IN A PAPER MACHINE FOURDRINIER OF THE TYPE INCLUDING, TRANSVERSE BEAM MEANS, FULCRUM PAD MEANS SUPPORTING ONE END OF SAID TRANSVERSE BEAM MEANS, AND SUPPORTING MEANS FOR SUPPORTING THE OPPOSITE END OF SAID TRANSVERSE BEAM MEANS, THE IMPROVEMENT COMPRISING SECURING MEANS FOR SECURING SAID OPPOSITE END OF SAID TRANSVERSE BEAM MEANS TO SAID SUPPORTING MEANS, WITH SAID TRANSVERSE BEAM MEANS BEING PRE-STREES TO PROVIDE A CLEARANCE BETWEEN SAID OPPOSITE END OF SAID TRANSVERSE BEAM MEANS AND SAID SUPPORTING MEANS WHEN SAID SECURING MEANS IS RELEASED.
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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |