Back to results
US 9,139,942 B2Granted
Needle plate of sewing machine
AssigneeJanome Sewing Machine Co., Ltd.
InventorKazuyoshi Azeyanagi
Life of this patent
Estimating the term…
Abstract
A needle plate of a sewing machine mounted on an upper surface of a bed of the sewing machine includes a support surface for supporting a fabric pressed by a presser foot, a needle opening through which a needle passes, and a feed dog slot through which a feed dog moves up and down and back and forth. The support surface has small projections and recesses.
Claims20
A needle plate of a sewing machine mounted on an upper surface of a bed of the sewing machine, the needle plate comprising:
- a support surface for supporting a fabric pressed by a presser foot;
- a needle opening through which a needle passes;
- and
- a feed dog slot through which a feed dog moves up and down and back and forth,
- wherein the support surface has small projections and recesses,
- wherein the support surface has a rough surface portion instead of the small projections and recesses only in a region surrounding the needle opening.
3 more elements
A needle plate of a sewing machine mounted on an upper surface of a bed of the sewing machine, the needle plate comprising:
- a support surface for supporting a fabric pressed by a presser foot;
- a needle opening through which a needle passes;
- and
- a feed dog slot through which a feed dog moves up and down and back and forth,
- wherein the support surface has small projections and recesses, and
- wherein a surface of the small projections and recesses has a surface treatment layer made of a self-lubricating coating.
3 more elements
Dependencies are inferred from the claim text.