US3748215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow tubular windlace
Assignee: Schlegel Manufacturing Co
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Filing: 1971-11-26
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Granted: 1973-07-24
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Expires: 1991-11-26
Abstract
Abstract A WINDLACE IS EXTRUDED OF A FLEXIBLE, THERMOPLASTIC MATERIAL TO FORM A HOLLOW TUBULAR BODY WITH AN INTEGRAL FLANGE. THE INTERIOR OF THE TUBULAR PORTION HAS A PLURALITY OF LONGITUDINAL RIDGES SEPARATED BY LONGITUDINAL GROOVES TO ALLOW BENDING OF THE WINDLACE WITHOUT COLLAPSING THE TUBULAR PORTION. THE WINDLACE IS PREFERABLY EXTRUDED IN A GENERALLY FLAT CONFIGURATION, EMBOSSED, AND THEN FORMED INTO A TUBE WITH TWO HALVES OF THE FLANGE JOINED TOGETHER IN A LONGITUDINAL PLANE GENERALLY RADIAL TO THE TUBE AND EXTENDING BETWEEN TWO HALVES OF ONE OF THE INTERNAL RIDGES TO SUPPORT THE WINDLACE IN THE DESIRED SHAPE.
Inventors
- 👤 A Lenzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:55
CPC Classifications
B; B60; B60J; B60J10/00; B60J10/20; B60J10/24; B60J10/246; B60J10/80; Y; Y10; Y10S; Y10S29/00; Y10S29/044; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038; Y10T156/1039; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139; Y10T428/24; Y10T428/24479; Y10T428/2457; Y10T428/24595; Y10T428/24744
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |