Patent US3309900A successfully refreshed from Google Patents.
US3309900A
Expired / Lapsed
US
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Knitting machines for the production of pile fabrics
Assignee: Naehwirkmaschinenbau Malimo Karl Marx Stadt VEB
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Filing: 1964-11-18
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Granted: 1967-03-21
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Expires: 1984-11-18
Abstract
No abstract record available.
Inventors
- 👤 Wunsch Wolfgang
- 👤 Kreisel Hartmut
- 👤 Ruger Gerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:21
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/02; D04B23/00; D04B23/08; D04B27/00; D04B27/06; D04B27/08; D04B27/10; D04B27/24; D04B27/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN A MACHINE FOR PRODUCING PILE FABRICS FROM A FOUNDATION AND AT LEAST TWO THREAD CHAINS, AND HAVING THEREIN A PLURALITY OF RECIPROCABLE NEEDLES POSITIONED FOR PIERCING THE BACK SIDE OF SAID FOUNDATION AND A PLURALITY OF THREAD GUIDES POSITIONED ON THE FRONT SIDE OF SAID FOUNDATION, THE IMPROVEMENT COMPRISING EYE NEEDLES HAVING HOOKS THEREIN BETWEEN THE EYE AND THE POINT OF THE NEEDLE, MEANS FOR RECIPROCATING SAID NEEDLES TO DRAW A LOOP FROM ONE THREAD CHAIN FROM SAID BACK SIDE TO SAID FRONT SIDE, MEANS FOR APPLYING ANOTHER THREAD CHAIN INTO SAID HOOKS TO DRAW A LOOP FROM SAID FRONT SIDE TO SAID BACK SIDE, AND MEANS TO FORM PILE LOOPS AT LEAST FROM ONE OF SAID THREAD CHAINS ON RECIPROCATION OF SAID NEEDLES.
Claim 2
Dependent Claim
125 words
IN A MACHINE FOR PRODUCING PILE FABRICS FROM A FOUNDATION AND AT LEAST TWO THREAD CHAINS, AND HAVING THEREIN A PLURALITY OF RECIPROCABLE NEEDLES POSITIONED FOR PIERCING THE BACK SIDE OF SAID FOUNDATION AND A PLURALITY OF THREAD GUIDES POSITIONED ON THE FRONT SIDE OF SAID FOUNDATION, THE IMPROVEMENT COMPRISING EYE NEEDLES HAVING HOOKS THEREIN BETWEEN THE EYE AND THE POINT OF THE NEEDLE, MEANS FOR RECIPROCATING SAID NEEDLES TO DRAW A LOOP FROM ONE THREAD CHAIN FROM SAID BACK SIDE TO SAID FRONT SIDE, MEANS FOR APPLYING ANOTHER THREAD CHAIN INTO SAID HOOKS TO DRAW A LOOP FROM SAID FRONT SIDE TO SAID BACK SIDE, AND MEANS TO FORM PILE LOOPS AT LEAST FROM ONE OF SAID THREAD CHAINS ON RECIPROCATION OF SAID NEEDLES.
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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |