Bobbin and sewing machine
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsKenichi MIZUNO, Rino NAKAMA, Akifumi NAKASHIMA
Life of this patent
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Abstract
A bobbin detachably installed into an inner hook of a sewing machine is disclosed. The bobbin includes a bobbin shaft; and a pair of flanges that are provided at both axial ends of the bobbin shaft. The bobbin shaft is cylindrical and includes a first opening and a second opening defined on axial ends thereof, the bobbin shaft being provided with a restriction member in a proximity of either of the first and the second opening to allow attachment of the bobbin to the inner hook through the first opening.
Claims7
A bobbin detachably installed into an inner hook of a sewing machine comprising:
- a bobbin shaft;
- a pair of flanges that are provided at both axial ends of the bobbin shaft;
- wherein the bobbin shaft is cylindrical and includes a first opening and a second opening defined on the axial ends thereof, the bobbin shaft being provided with a restriction member in a proximity of either of the first and the second opening to allow attachment of the bobbin to the inner hook through the first opening.
A sewing machine comprising:
- an inner hook that detachably installs a bobbin provided with a bobbin shaft and a pair of flanges at both axial ends of the bobbin shaft;
- wherein the bobbin shaft is cylindrical and includes a first opening and a second opening defined on axial ends thereof, the bobbin shaft being provided with a restriction member in a proximity of either of the first and the second opening to allow attachment of the bobbin to the inner hook through the first opening, and
- wherein the inner hook is provided with a first fitting section that fits with the first opening and not with the second opening, the bobbin being attached to the inner hook only through the first opening by the fitting of the first fitting section and the first opening.
Dependencies are inferred from the claim text.