US3677035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch needle for knitting machines
Assignee: Groz Beckert KG
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Filing: 1969-12-10
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Granted: 1972-07-18
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Expires: 1989-12-10
Abstract
Abstract A latch needle for knitting machines having a latch provided with a hole and pivotably located in a longitudinal slot formed between faces of the needle shaft, and having a steel axle pin inserted through the hole, the ends of the pin being rotatably mounted in holes in the shaft faces, wherein the axle pin ends have a larger diameter in the region of the shaft faces than the portion of the pin in the latch hole.
Inventors
- 👤 Wolfgang Wiederhut
- 👤 Helmut Landenberger
- 👤 Ulrich Hofmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:10
CPC Classifications
D; D04; D04B; D04B35/00; D04B35/02; D04B35/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
136 words
A latch needle for knitting machines, comprising: a needle shaft, having a longitudinal slot at one end, and at least one pair of apertures disposed in said shaft opening on the inside surfaces of said slot, said apertures being enlarged conically outwardly from the inner surface of said longitudinal slot to the outside surface of said needle shaft; a needle latch, having an aperture at one end, disposed in said longitudinal slot; and an axle pin, inserted through said aperture in said latch and secured to said latch so that said latch and said pin are united, having end members enlarged conically outwardly from the center of said axle pin towards the ends of said pin, and disposed in said conical apertures provided in said needle shaft for rotating in said apertures with said needle latch.
Claim 2
Dependent Claim
136 words
A latch needle for knitting machines, comprising: a needle shaft, having a longitudinal slot at one end, and at least one pair of apertures disposed in said shaft opening on the inside surfaces of said slot, said apertures being enlarged conically outwardly from the inner surface of said longitudinal slot to the outside surface of said needle shaft; a needle latch, having an aperture at one end, disposed in said longitudinal slot; and an axle pin, inserted through said aperture in said latch and secured to said latch so that said latch and said pin are united, having end members enlarged conically outwardly from the center of said axle pin towards the ends of said pin, and disposed in said conical apertures provided in said needle shaft for rotating in said apertures with said needle latch.
Claim 3
Dependent Claim
63 words
The latch needle as recited in claim 1, wherein said axle pin has an annular groove circumscribing said pin, and wherein said latch aperture has an inwardly directed, annular bulge, having a polygonal cross-sectional shape, disposed in said groove on said axle pin, for securing said latch on said axle pin, and preventing rotational movement of said pin with respect to said latch.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |