Motor pulley for overlock sewing machine
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United States of America Patent
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-
Aug 6, 2013
Grant Date -
May 10, 2012
app pub date -
Nov 2, 2011
filing date -
Nov 4, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A motor pulley for an overlock sewing machine is provided. The motor pulley includes a frame which forms a body of the pulley, and a plurality of ribs which are integrally formed with the frame. Each rib is oriented in a radial direction at a predetermined angle displaced from an axial center line of the pulley. The motor pulley further includes a ramp which is formed on one side surface of each of the ribs, and a slot which is formed in the pulley so that outside air can enter the motor pulley. The motor pulley of the present invention increases the flow rate of air that is blown from the pulley to a motor of the overlock sewing machine. Furthermore, the path of air flow of the motor pulley is improved, thus reducing a loss of air flow and increasing the flow rate of air.
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