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US 7,503,270 B2Granted
Bobbin system for use with a sewing machine
AssigneeIrvin Automotive Products, Inc.
InventorJoseph P. Wieczorek
Life of this patent
Estimating the term…
Abstract
A bobbin system for use with a sewing machine is disclosed. The system includes a bobbin and a thread wound around the bobbin. The system also includes an anti-unwinding member arranged around the thread to ensure that the thread does not dislodge and unwind off of the bobbin thus reducing or eliminating entanglements and jamming of the moving parts of the sewing machine.
Claims13
A bobbin system for use with a sewing machine, said system comprising:
- a bobbin;
- a thread wound around said bobbin;
- and
- C-shaped anti-unwinding member arranged around said thread, said anti-unwinding member surrounds said thread in a complete circular encapsulation except for a predetermined portion where a gap is defined in said anti-unwinding member, said anti-unwinding member having an outer diameter that is approximately equal to or less than an outside diameter of said bobbin.
1 more element
A sewing machine, said machine including:
- a bobbin post;
- a bobbin arranged over said bobbin post;
- a monofilament thread wound round said bobbin;
- and
- a generally C-shaped anti-unwinding member surrounding said thread, said C-shape member is arranged completely within a toroidal space of said bobbin.
2 more elements
A bobbin system for use with a sewing machine, said system comprising:
- a bobbin;
- a thread wound around said bobbin;
- and
- a C-shaped and-unwinding member arranged around said thread, said anti-unwinding member is arranged completely within a toroidal space of said bobbin.
1 more element
Dependencies are inferred from the claim text.