Weaving shuttle

• US 6,123,115 A
• Filed: 11/10/1999
• Issued: 09/26/2000
• Est. Priority Date: 08/14/1998
• Status: Expired due to Fees

• Current Assignee: Prodesco, Inc. (Compagnie Generale DES Etablissements Michelin SCA)
• Original Assignee: Prodesco, Inc. (Compagnie Generale DES Etablissements Michelin SCA)
• Inventors: Greenhalgh, E. Skott
• Primary Examiner(s): FALIK, ANDREW M
• Application Number:
  US09/437,876
• Time in Patent Office: 321 Days
• Field of Search: 139/384 R, 139/54, 139/196.1, 139/DIG. 1, 139/22, 139/29, 139/206
• US Class Current: 139/196.1
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: D03D 11/02 Fabrics formed with pockets, tubes, loops, folds, tucks or flaps fabrics consisting of a single tube D03D3/02
• CPC Class Codes: D03D 13/00 Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
• CPC Class Codes: D03J 5/00 Shuttles swivel shuttles D03D31/00; shuttles for smallware looms D03D35/00; circular loom shuttles D03D37/00; selvedge shuttles D03D47/46
• CPC Class Codes: D10B 2401/046 Shape recovering or form memory
• CPC Class Codes: D10B 2509/06 Vascular grafts; stents
• CPC Class Codes: Y10S 139/01 Bias fabric digest

Abstract

Embodiments of weaving shuttles are disclosed which are adapted for use in producing woven textile structures. The shuttles may be used to dispense weft yarns when weaving with a loom, and are particularly adapted to insert a wire-like structural member integrally into the woven textile.

Claims

1. A weaving shuttle for use in dispensing weft yarns when weaving with a loom, said shuttle comprising:

a main body portion adapted to move in a transverse direction through a shed formed of warp yarns on the loom;

a spool mounted for rotation, with respect to said main body portion, about an axis substantially perpendicular to said transverse direction and substantially parallel to the warp yarns, said spool being adapted to store the weft yarns and dispense the weft yarns when said main body portion moves through the shed; and

a weft yarn guide secured to said main body portion, said weft yarn guide being adapted to receive and guide weft yarn being dispensed from said spool;

said guide including an eyelet which receives the weft yarn and a cantilevered portion having first and second ends, said first end being secured to said main body portion, said second end being secured to said eyelet, said eyelet being suitably dimensioned and having a suitable coefficient of friction such that it receives a first frictional force applied by the weft yarn when the weft yarn is being dispensed, said cantilevered portion having a span and flexural rigidity selected to deflect with application of said first fictional force and to recoil when said first frictional force is removed as dispensing of the weft yarn is completed, said eyelet also being suitably dimensioned and having said coefficient of friction so as to apply a second frictional force to the weft yarn as said cantilevered portion recoils, whereby at least a portion of the weft yarn is recaptured.

2. A weaving shuttle for use in dispensing weft yarns when weaving with a loom, said shuttle comprising:

a main body portion adapted to move in a transverse direction through a shed formed of warp yarns on the loom;

a spool mounted for rotation, with respect to said main body portion, about an axis substantially perpendicular to said transverse direction and substantially parallel to the warp yarns, said spool being adapted to store the weft yarns and dispense the weft yarns when said main body portion moves through the shed; and

a weft yarn guide secured to said main body portion, said weft yarn guide being adapted to receive and guide weft yarn being dispensed from said spool and being spring-loaded so as to bias said guide to a desired position and return said guide to said desired position upon deflection thereof.

3. A weaving shuttle for use in dispensing weft yarns when weaving with a loom, said shuttle comprising:

a main body portion adapted to move in a transverse direction through a shed formed of warp yarns on the loom;

a spool mounted for rotation, with respect to said main body portion, about an axis substantially perpendicular to said transverse direction and substantially parallel to the warp yarns, said spool being adapted to store the weft yarns and dispense the weft yarns when said main body portion moves through the shed; and

an anti-reverse mechanism which permits said spool to rotate in a first rotational sense for dispensing of said yarn but which prevents rotation in a second rotational sense which is opposite to said first rotational sense.

4. The weaving shuttle of claim 3, wherein said anti-reverse mechanism is configured to apply a drag to said spool to prevent overrunning thereof.

5. A weaving shuttle for use in dispensing weft yarns when weaving with a loom, said shuttle comprising:

a main body portion adapted to move in a transverse direction through a shed formed of warp yarns on the loom;

a spool mounted for rotation, with respect to said main body portion, about an axis substantially perpendicular to said transverse direction and substantially parallel to the warp yarns, said spool being adapted to store the weft yarns and dispense the weft yarns when said main body portion moves through the shed; and

a recapture mechanism which permits the weft yarn to be dispensed when said shuttle is moved in said transverse direction through the shed and which recaptures unused weft yarn when said shuttle is moved in a direction opposite to said transverse direction.

6. The weaving shuttle of claim 5, wherein said recapture mechanism comprises:

a motor which is coupled to said spool for rotational driving; and

a controller which is coupled to said motor to enable said rotational driving when it is desired to recapture the weft yarn.

7. The weaving shuttle of claim 6, wherein said controller comprises a clutch.

8. The weaving shuttle of claim 5, wherein the loom includes a batten with a rack portion thereon, said weaving shuttle further comprising a pinion portion mounted to said main body portion and operatively interconnected with said spool so as to rotate said spool for recapture of the unused weft yarn upon engagement with the rack of the batten.