US 9,814,096 B2
Power management for hot melt dispensing systems
Mark J. Brudevold, Fridley, MN (US)
Assigned to Graco Minnesota Inc., Minneapolis, MN (US)
Filed by Graco Minnesota Inc., Minneapolis, MN (US)
Filed on Jun. 2, 2015, as Appl. No. 14/728,746.
Application 14/728,746 is a division of application No. 13/705,406, filed on Dec. 5, 2012, granted, now 9,119,230.
Claims priority of provisional application 61/718,235, filed on Oct. 25, 2012.
Prior Publication US 2015/0264745 A1, Sep. 17, 2015
Int. Cl. B67B 7/00 (2006.01); G01F 11/00 (2006.01); B67D 1/00 (2006.01); B67D 7/14 (2010.01); B67D 7/80 (2010.01); H05B 1/02 (2006.01); B67D 99/00 (2010.01)
CPC H05B 1/0225 (2013.01) [B67D 99/00 (2013.01); H05B 1/0244 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of controlling heating of hot melt adhesive within a hot melt dispensing system having heaters in a plurality of zones, the method comprising:
receiving input AC electric power;
determining on a half cycle-by-half cycle basis which heaters will receive AC electric power during the next half cycle; and
distributing the AC electric power to the heaters on a time sharing basis, wherein distributing AC electric power to the heaters further includes maintaining an RMS total current draw over time at or below the total current target.