US3553862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable stretch frame for biaxially stressing sheet material
Assignee: Individual
•
Filing: 1969-01-17
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Granted: 1971-01-12
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Expires: 1989-01-17
Abstract
Abstract A STRETCH FRAME FOR BIAXIALLY STRESSING SHEET MATERIAL, SUCH AS PRINTING SCREEN, IN MUTUALLY PERPENDICULAR EDGEWISE DIRECTIONS. THE FRAME HAS A RECTANGULAR FRAME STRUCTURE MOUNTING FLOATING BARS FOR ATTACHMENT TO THE MARGINAL EDGES OF THE SHEET MATERIAL TO BE STRESSED, AND MEANS FOR INDEPENDENTLY ADJUSTING THE FLOATING BARS RELATIVE TO THE FRAME STRUCTURE TO STRESS THE SHEET MATERIAL IN MUTUALLY PERPENDICULAR EDGEWISE DIRECTIONS. THE MAJOR CONTRIBUTION OF THE INVENTION RESIDES IN THE SHEET GRIPPING STRUC- TURE OF THE FLOATING BARS, WHEREBY A SHEET TO BE STRESSED MAY BE FIRMLY ATTACHED TO THE BARS AND YET READILY RELEASED FROM THE BARS, WHEN DESIRED.
Inventors
- 👤 Kaino J Hamu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:17
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/14; B41F15/34; B41F15/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |