US 9,809,912 B2
Vibration reduction mechanism for a sewing machine
James Adelbert McKinney, American Fork, UT (US); Bryan K. Ruggles, Riverton, UT (US); and Gary James Konzak, Salem, UT (US)
Assigned to Handi Quilter, Inc., North Salt Lake, UT (US)
Filed by HANDI QUILTER, INC., North Salt Lake, UT (US)
Filed on Oct. 16, 2014, as Appl. No. 14/516,053.
Prior Publication US 2016/0108572 A1, Apr. 21, 2016
Int. Cl. D05B 69/32 (2006.01); D05B 11/00 (2006.01)
CPC D05B 69/32 (2013.01) [D05B 11/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A vibration reduction mechanism for a sewing machine, the vibration reduction mechanism comprising:
a rotational counterweight configured to be coupled to a driveshaft of a sewing machine and configured to be rotated by rotation of the driveshaft;
a needle bar of the sewing machine configured to be coupled to the driveshaft and configured to be substantially linearly reciprocated by rotation of the driveshaft; and
a reciprocating counterweight coupled to the rotational counterweight, a first portion of the reciprocating counterweight configured to be rotated by the rotation of the rotational counterweight, a second portion of the reciprocating counterweight configured to be substantially linearly reciprocated in a first substantially linear reciprocating motion that is substantially opposite to a second substantially linear reciprocating motion of the needle bar along a length of a structure by the rotation of the rotational counterweight.