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US3580291A Expired / Lapsed US ⏱️ 0.0 years remaining

Filling carrier for use in shuttleless looms

Assignee: Promatech SpA
•
Filing: 1968-08-05
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Granted: 1971-05-25
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Expires: 1988-08-05
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Abstract

Abstract A feeding gripper that transfers weft yarn to a drawing gripper in the warp sheds of a shuttleless loom comprises an open boxtype structure or main body of plastic with a laterally projecting front wing. The wing is bifurcated by a forwardly opening horizontal slot, into superposed lower and upper jaws that receive between them the weft yarn. The upper jaw is in two laterally spaced portions one of which extends forwardly from the forward end of the main body and the other of which, at a lower level, overlies the lower jaw. The forward ends of the two portions of the upper jaw are interconnected by a downwardly laterally outwardly inclined portion, and a vertical fin having a forwardly downwardly inclined upper edge is disposed on the inner side of the forward end of the lower jaw. A resilient yarnchecking device is provided on the lower jaw, between the two portions of the upper jaw, comprising metallic laminae and an adjustable leaf spring which presses them against the lower jaw.

Inventors

  • 👤 Mario Piccoli

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 23:35
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/20; D03D47/23; D03D47/233; D03J; D03J5/00; D03J2700/00; D03J2700/10; D03J2700/14; D03J2700/16

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 176 words
A feeding gripper for transferring weft yarn to a drawing gripper in the warp sheds of a shuttleless loom, comprising an open box-type main body having thereon a laterally projecting front wing bifurcated by a forwardly opening horizontal slot into superposed lower and upper jaws that receive between them the weft yarn, said upper jaw being in two laterally spaced portions one of which extends forwardly from the forward end of said main body and other other of which is disposed at a lower level than said one portion and overlies said lower jaw, the forward ends of said two portions of said upper jaw being interconnected by a downwardly laterally outwardly inclined portion, a vertical fin on the inner side of the forward end of said lower jaw, said fin having a forwardly downwardly inclined upper edge, a resilient yarn-checking device on the lower jaw between said two portions of said upper jaw, said resilient device comprising at least one metallic lamina and an adjustable leaf spring which presses said lamina against the lower jaw.
Claim 2
Dependent Claim 176 words
A feeding gripper for transferring weft yarn to a drawing gripper in the warp sheds of a shuttleless loom, comprising an open box-type main body having thereon a laterally projecting front wing bifurcated by a forwardly opening horizontal slot into superposed lower and upper jaws that receive between them the weft yarn, said upper jaw being in two laterally spaced portions one of which extends forwardly from the forward end of said main body and other other of which is disposed at a lower level than said one portion and overlies said lower jaw, the forward ends of said two portions of said upper jaw being interconnected by a downwardly laterally outwardly inclined portion, a vertical fin on the inner side of the forward end of said lower jaw, said fin having a forwardly downwardly inclined upper edge, a resilient yarn-checking device on the lower jaw between said two portions of said upper jaw, said resilient device comprising at least one metallic lamina and an adjustable leaf spring which presses said lamina against the lower jaw.

References Cited (Backward Citations)

US3159186A Cited
US3081796A Cited
US3390707A Cited
FR1444834A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-05-24 1974-11-23 1975-05-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-24 1978-11-23 1979-05-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-24 1982-11-23 1983-05-25 $7700.00 Window Closed / Lapsed

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