US3256928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder cord for venetian blinds
Assignee: Hunter Douglas International Quebec Ltd
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Filing: 1964-03-09
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Granted: 1966-06-21
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Expires: 1984-03-09
Abstract
No abstract record available.
Inventors
- 👤 Hensel Erich Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:04
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/38; E06B9/382; D; D04; D04B; D04B21/00; D04B21/10; D10; D10B; D10B2403/00; D10B2403/03; D10B2403/031; D10B2403/0311; D10B2503/00; D10B2503/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A LADDER ASSEMBLY FOR MOUNTING THE SLATS IN A VENETIAN BLIND, SAID ASSEMBLY COMPRISING AT LEAST TWO PARALLEL SPACED LONGITUDINAL CORDS AND PAIRS OF TRANSVERSE CORDS EXTENDING BETWEEN AND CONNECTING SAID LONGITUDINAL CORDS TOGETHER, SAID PAIRS OF TRANSVERSE CORDS BEING LONGITUDINALLY SPACED APART AT SUBSTANTIALLY EQUAL INTERVALS ALONG THE LENGTH OF SAID LONGITUDINAL CORDS AND THE TRANSVERSE CORDS IN EACH PAIR BEING LONGITUDINALLY SPACED APART FROM EACH OTHER, SAID PAIRS OF TRANSVERSE CORDS BEING CONSTITUTED BY A SINGLE CONTINUOUS LENGTH OF CORD MATERIAL WHICH IS INTERLACED LONGITUDINALLY ALONG THE LENGTH OF ONE OF SAID LONGITUDINAL CORDS AND AT SAID INTERVALS PASSES FROM SAID ONE LONGITUDINAL CORD TO THE OPPOSITE LONGITUDINAL CORD AND IS THERE INTERLACED ALONG A LONGITUDINAL EXTENT THEREOF EQUAL ONLY TO THE LONGITUDINAL SPACING BETWEEN THE TRANSVERSE CORDS IN EACH SAID PAIR AND SAID CONTINUOUS MATERIAL IS THEN PASSED BACK TO SAID FIRST LONGITUDINAL CORD AND IS INTERLACED THEREWITH ALONG ANOTHER LONGITUDINAL EXTENT THEREOF EQUAL TO ONE OF SAID INTERVALS, SAID CONTINUOUS LENGTH THEN BEING PASSED TO SAID OPPOSITE LONGITUDINAL CORD AND BEACK TO SAID ONE CORD TO FORM A SECOND OF SAID PAIRS OF TRANSVERSE CORDS.
Claim 2
Dependent Claim
189 words
A LADDER ASSEMBLY FOR MOUNTING THE SLATS IN A VENETIAN BLIND, SAID ASSEMBLY COMPRISING AT LEAST TWO PARALLEL SPACED LONGITUDINAL CORDS AND PAIRS OF TRANSVERSE CORDS EXTENDING BETWEEN AND CONNECTING SAID LONGITUDINAL CORDS TOGETHER, SAID PAIRS OF TRANSVERSE CORDS BEING LONGITUDINALLY SPACED APART AT SUBSTANTIALLY EQUAL INTERVALS ALONG THE LENGTH OF SAID LONGITUDINAL CORDS AND THE TRANSVERSE CORDS IN EACH PAIR BEING LONGITUDINALLY SPACED APART FROM EACH OTHER, SAID PAIRS OF TRANSVERSE CORDS BEING CONSTITUTED BY A SINGLE CONTINUOUS LENGTH OF CORD MATERIAL WHICH IS INTERLACED LONGITUDINALLY ALONG THE LENGTH OF ONE OF SAID LONGITUDINAL CORDS AND AT SAID INTERVALS PASSES FROM SAID ONE LONGITUDINAL CORD TO THE OPPOSITE LONGITUDINAL CORD AND IS THERE INTERLACED ALONG A LONGITUDINAL EXTENT THEREOF EQUAL ONLY TO THE LONGITUDINAL SPACING BETWEEN THE TRANSVERSE CORDS IN EACH SAID PAIR AND SAID CONTINUOUS MATERIAL IS THEN PASSED BACK TO SAID FIRST LONGITUDINAL CORD AND IS INTERLACED THEREWITH ALONG ANOTHER LONGITUDINAL EXTENT THEREOF EQUAL TO ONE OF SAID INTERVALS, SAID CONTINUOUS LENGTH THEN BEING PASSED TO SAID OPPOSITE LONGITUDINAL CORD AND BEACK TO SAID ONE CORD TO FORM A SECOND OF SAID PAIRS OF TRANSVERSE CORDS.
References Cited (Backward Citations)
US2275273A
Cited
CH306933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |