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US 5,762,012 AGranted
Sewing machine with thread exchange device
AssigneeAisin Seiki Kabushiki Kaisha
InventorsYoshimi Kawamura, Moriya Ochi
Life of this patent
Estimating the term…
Abstract
A sewing machine which includes a main shaft motor for driving a main shaft; a needle bar for moving up and down by rotation of the main shaft motor; a thread exchanging mechanism, having a swinging member swingable by rotation of the main shaft motor, for exchanging a thread by moving a thread barrel having an opening through which a thread is passed, from a standby position to an exchange position; and a controller for controlling the rotation of the main shaft motor.
Claims16
A sewing machine comprising:
- a main shaft motor for driving a main shaft;
- a needle bar for moving up and down by rotation of said main shaft motor;
- a thread exchanging mechanism, having a swinging member swingable by rotation of said main shaft motor, for exchanging a thread by moving a thread barrel having an opening through which a thread is passed, from a standby position to an exchange position;
- and
- a controller for controlling the rotation of said main shaft motor.
2 more elements
Dependencies are inferred from the claim text.