US3830489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Veneer conveying method
Assignee: NAT BANK OF PORTLAND
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Filing: 1972-04-24
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Granted: 1974-08-20
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Expires: 1992-04-24
Abstract
Abstract A wide-belt overhead vacuum conveyor for carrying veneer sheets along a path with the sheets extending transversely of the path. The conveyor includes an endless, elongated, perforate conveyor belt having a width substantially spanning the length of the veneer sheets to be carried. The belt has a lower reach extending in the direction of the path and is driven under power along the path. A vacuum manifold having a width spanning the width of the belt overlies the lower reach of the belt. The underside of the chamber is formed of spaced-apart support rollers disposed with their undersides in a common, substantially horizontal plane. Evacuation of the vacuum chamber draws air through the perforate belt, with the support rollers preventing the belt from being drawn into the manifold. The belt also is trained over an adjustment roller which may be selectively canted to produce tracking of the belt toward either side of the path to keep it centered on the path.
Inventors
- 👤 J Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:02
CPC Classifications
B; B65; B65H; B65H5/00; B65H5/22; B65H5/222; B65H5/224; B65H3/00; B65H3/08; B65H3/12; B65H3/124; B65H3/126; B65H2404/00; B65H2404/20; B65H2404/25; B65H2404/255; B65H2406/00; B65H2406/30; B65H2406/32; B65H2406/323; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/1092; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1751; Y10T156/1761
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
277 words
A method of laying up veneer sheets in the making of plywood panels comprising providing a stack of veneer core sheets where the sheets in the stack have substantially the same width and length dimensions and are aligned vertically in the stack and the grain of said sheets have a common direction which extends across one dimension of the sheets, providing another stack of veneer sheets to one side of said stack of core sheets with the sheets of said other stack to be interspersed with the core sheets, the sheets in said other stack having the width and length dimension of the core sheets and being vertically aligned in the stack, the grain of said sheets in said other stack having a common direction which extends across a dimension of the sheets which is normal to said one dimension, said one and said other stacks of sheets being arranged with a common dimension of the sheets in the two stacks paralleling each other and with the stacks aligned in a direction extending transversely of this common dimension, and with a vacuum lifting successive sheets from the two stacks into a common substantially horizontal support plane and moving sheets while so lifted and occupying such plane to one side of the stacks of sheets with such movement being in a direction extending transversely of said common dimension, to produce a series of sheets moving in said support plane comprising core sheets interspersed with sheets from said other stack of sheets, the moving of such sheets in said support plane being done while supporting upper faces of the sheets from the two stacks throughout their said common dimension.
Claim 2
Independent Claim
277 words
A method of laying up veneer sheets in the making of plywood panels comprising providing a stack of veneer core sheets where the sheets in the stack have substantially the same width and length dimensions and are aligned vertically in the stack and the grain of said sheets have a common direction which extends across one dimension of the sheets, providing another stack of veneer sheets to one side of said stack of core sheets with the sheets of said other stack to be interspersed with the core sheets, the sheets in said other stack having the width and length dimension of the core sheets and being vertically aligned in the stack, the grain of said sheets in said other stack having a common direction which extends across a dimension of the sheets which is normal to said one dimension, said one and said other stacks of sheets being arranged with a common dimension of the sheets in the two stacks paralleling each other and with the stacks aligned in a direction extending transversely of this common dimension, and with a vacuum lifting successive sheets from the two stacks into a common substantially horizontal support plane and moving sheets while so lifted and occupying such plane to one side of the stacks of sheets with such movement being in a direction extending transversely of said common dimension, to produce a series of sheets moving in said support plane comprising core sheets interspersed with sheets from said other stack of sheets, the moving of such sheets in said support plane being done while supporting upper faces of the sheets from the two stacks throughout their said common dimension.
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |