Sewing – Elements – Frames
Reexamination Certificate
2008-03-25
2008-03-25
Izaguirre, Ismael (Department: 3765)
Sewing
Elements
Frames
Reexamination Certificate
active
07347152
ABSTRACT:
A sewing machine includes a main frame including a needle seat, a beam, and a head supported by the beam. The head includes elements for sewing operation in association with the needle seat. A fixed seat is fixed to the beam and a rotational seat is fixed to the head to turn therewith. The rotational seat and the fixed seats include aligned axial holes. A shaft sleeve extends from the rotational seat and rotatably extends through the axial hole of the fixed seat. The head and the rotational seat are movable relative to the fixed seat between an operative position allowing sewing operation and an inoperative position angularly spaced from the operative position. A distance between the head and the needle seat is increased when the head is moved from the operative position to the inoperative position, allowing easy insertion and removal of thick materials during a sewing operation.
REFERENCES:
patent: 290162 (1883-12-01), Winchell
patent: 349438 (1886-09-01), Looker
patent: 361426 (1887-04-01), Looker
patent: 364769 (1887-06-01), Palmer, Jr.
patent: 418890 (1890-01-01), Dimond et al.
patent: 2709978 (1955-06-01), Adler
patent: 4333410 (1982-06-01), Taketomi
patent: 4787324 (1988-11-01), Fischer et al.
Chang Hsien-Chin
Wu Jui-Yi
Izaguirre Ismael
Kamrath Alan
Kamrath & Associates PA
Sewtech Corporation
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