Bobbin case assembly with thread tensioning assembly

Details Bobbin case assembly with thread tensioning assembly Bobbin case assembly with thread tensioning assembly

2005-05-24

2005-05-24

Izaguirre, Ismael (Department: 3765)

Sewing

Elements

Revolving hooks

Reexamination Certificate

active

06895879

ABSTRACT:
A bobbin case assembly having a wall structure mountable operably upon a support and defining a first receptacle for a supply of thread, and a tensioning assembly. The tensioning assembly has a first surface that bears against the thread. At least one of the wall structure and tensioning assembly has a second surface. The thread resides between the first and second surfaces through which the frictional force on the thread is generated. A body is bendable to so that one of the first and second surfaces is movable selectively towards and away from the other. A flexing portion on the body is bendable relative to mounting portion and has first and second flexing regions. The second flexing region is more flexible relative to the first flexing region than the first flexing region is flexible relative to the mounting portion. The first surface is on the second flexing region.

REFERENCES:
patent: 3381642 (1968-05-01), Bono
patent: 3940089 (1976-02-01), Lindquist
patent: 4235178 (1980-11-01), Ackermann
patent: 4478162 (1984-10-01), Bierweller
patent: 4884519 (1989-12-01), Dreier
patent: 5433159 (1995-07-01), Muramatsu

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