Sewing – Elements – Fly wheels
Reexamination Certificate
2007-07-26
2008-10-21
Izaguirre, Ismael (Department: 3765)
Sewing
Elements
Fly wheels
Reexamination Certificate
active
07438009
ABSTRACT:
A sewing machine having a locking pin clutch mechanism allowing the user to selectively engage the flywheel or balance wheel for transmitting power to the main drive shaft. The locking pin may also have a line of weakness to function as a shear pin. The locking pin may be removable from the flywheel, and the flywheel retaining locking knob may include an aperture for storing the locking pin. In alternate embodiments, the locking pin may be held captive in the flywheel when the clutch is disengaged.
REFERENCES:
patent: 194067 (1877-08-01), Baker et al.
patent: 241180 (1881-05-01), Barker
patent: 247398 (1881-09-01), Parcelle
patent: 1853110 (1932-04-01), Ball
patent: 3224398 (1965-12-01), Greulich
patent: 3869030 (1975-03-01), Masaki
patent: 4453624 (1984-06-01), Graham
patent: 4523794 (1985-06-01), Peterman
patent: 5148754 (1992-09-01), Lahti et al.
Izaguirre Ismael
Sailrite Enterprises, Inc.
Wood Phillips Katz Clark & Mortimer
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