US3750740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible closure for log steaming vat
Assignee: Yakima Tent and Awning Co Ltd
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Filing: 1971-11-02
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Granted: 1973-08-07
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Expires: 1991-11-02
Abstract
Abstract A free-hanging flexible closure for the discharge end of a log steaming vat retains steam in the vat while permitting logs to roll from the vat without damage to the closure. The closure is constructed to resist the corrosive effects of steam, petroleum and acids and is also highly resistant to scuffing and chafing caused by contact with the rolling logs. It is weighted so that it will normally and automatically assume a vat-sealing position.
Inventors
- 👤 V Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:44
CPC Classifications
A; A47; A47H; A47H23/00; A47H23/02; E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/262; E06B9/02; E06B9/08; E06B9/11; E06B9/13; E06B2009/135; E06B2009/2622
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A closure for a log steaming vat comprising a free-hanging flexible sheet body portion formed of rubberized nylon, plurAl vertically spaced horizontal pocket-forming strips secured to the interior side only of said sheet body portion and forming therewith open-ended pockets which extend for the full width of the sheet body portion, weight bars disposed in the bottoms of said pockets, retainer pins for the weight bars extending transversely through said bars, pockets and sheet body portion near opposite ends of the pockets, said pocket-forming strips being of substantial width and extending considerably above the weight bars and forming reinforcements on the interior side of said sheet body portion, and plural vertically extending laterally spaced parallel wide wear-resistant strips on the interior side of said sheet body portion and extending continuously from top-to-bottom thereof and crossing over said pocket-forming strips and being secured thereto in right angular relationship forming therewith a wear-resistant gridwork of wide strips on the interior side of the sheet body portion, said reinforcing gridwork including double thickness regions at the crossing areas of the pocket-forming and wear-resistant strips.
Claim 2
Dependent Claim
181 words
A closure for a log steaming vat comprising a free-hanging flexible sheet body portion formed of rubberized nylon, plurAl vertically spaced horizontal pocket-forming strips secured to the interior side only of said sheet body portion and forming therewith open-ended pockets which extend for the full width of the sheet body portion, weight bars disposed in the bottoms of said pockets, retainer pins for the weight bars extending transversely through said bars, pockets and sheet body portion near opposite ends of the pockets, said pocket-forming strips being of substantial width and extending considerably above the weight bars and forming reinforcements on the interior side of said sheet body portion, and plural vertically extending laterally spaced parallel wide wear-resistant strips on the interior side of said sheet body portion and extending continuously from top-to-bottom thereof and crossing over said pocket-forming strips and being secured thereto in right angular relationship forming therewith a wear-resistant gridwork of wide strips on the interior side of the sheet body portion, said reinforcing gridwork including double thickness regions at the crossing areas of the pocket-forming and wear-resistant strips.
References Cited (Backward Citations)
US2122532A
Cited
US3006352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |