US3326097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming tube
Assignee: West Virginia Pulp and Paper Co
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Filing: 1964-03-30
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Granted: 1967-06-20
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Expires: 1984-03-30
Abstract
No abstract record available.
Inventors
- 👤 Burke P Lokey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:20
CPC Classifications
B; B65; B65B; B65B51/00; B65B51/02; B32; B32B; B32B37/00; B32B37/12; B32B37/1284; B32B37/1292; B65B1/00; B65B1/20; B65B1/22; B65B41/00; B65B41/12; B65B41/16; B65B61/00; B65B61/02; B65B61/04; B65B61/12; B65B61/28; B65B9/00; B65B9/10; B65B9/20; B65B9/213; B65B9/22; B29; B29C; B29C53/00; B29C53/36; B29C53/38; B29C53/48; B29L; B29L2009/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
APPARATUS FOR CONTINUOUSLY FORMING A WEB OF SHEET MATERIAL OF INDEFINITE LENGTH INTO A TUBE, THE FORMING SURFACES OF SAID APPARATUS INCLUDING AN APPROACH SURFACE, A FORWARD THROAT SURFACE AND A RECTANGULAR REAR THROAT SURFACE AND WHEREIN THE IMPROVEMENT COMPRISES: (A) ALL OF SAID FORMING SURFACES ARE SUBSTANTIALLY FLAT, PLANAR SURFACES, (B) SAID APPROACH SURFACE IS SUBSTANTIALLY TRAPEZOIDAL IN CONFIGURATION, (C) SAID REAR THROAT SURFACE IS JOINED ALONG ONE OF ITS SIDES TO THE SHORTER PARALLEL SIDE OF SAID APPROACH SURFACE, AND (D) THE DIMENSIONS OF SAID FORMING SURFACES ARE PROPORTIONED RELATIVE TO EACH OTHER SUCH THAT SAID TUBE FORMING APPARATUS MAY BE DEVELOPED FROM A RECTANGULAR SHEET OF MATERIAL HAVING A LENGTH EQUAL TO THE TOTAL LENGTH OF SAID APPROACH SURFACE AND SAID REAR THROAT SURFACE AND A WIDTH EQUAL TO THE WIDTH OF THE LONGER PARALLEL SIDE OF SAID APPROACH SURFACE.
Claim 2
Dependent Claim
143 words
APPARATUS FOR CONTINUOUSLY FORMING A WEB OF SHEET MATERIAL OF INDEFINITE LENGTH INTO A TUBE, THE FORMING SURFACES OF SAID APPARATUS INCLUDING AN APPROACH SURFACE, A FORWARD THROAT SURFACE AND A RECTANGULAR REAR THROAT SURFACE AND WHEREIN THE IMPROVEMENT COMPRISES: (A) ALL OF SAID FORMING SURFACES ARE SUBSTANTIALLY FLAT, PLANAR SURFACES, (B) SAID APPROACH SURFACE IS SUBSTANTIALLY TRAPEZOIDAL IN CONFIGURATION, (C) SAID REAR THROAT SURFACE IS JOINED ALONG ONE OF ITS SIDES TO THE SHORTER PARALLEL SIDE OF SAID APPROACH SURFACE, AND (D) THE DIMENSIONS OF SAID FORMING SURFACES ARE PROPORTIONED RELATIVE TO EACH OTHER SUCH THAT SAID TUBE FORMING APPARATUS MAY BE DEVELOPED FROM A RECTANGULAR SHEET OF MATERIAL HAVING A LENGTH EQUAL TO THE TOTAL LENGTH OF SAID APPROACH SURFACE AND SAID REAR THROAT SURFACE AND A WIDTH EQUAL TO THE WIDTH OF THE LONGER PARALLEL SIDE OF SAID APPROACH SURFACE.
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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |