US 9,809,411 B2
Integral anti-rollback for injection molded tape dispensers
Larry E. Tiedemann, Winona, MN (US); and Robert J. Harter, La Crosse, WI (US)
Filed by Larry E. Tiedemann, Winona, MN (US); and Robert J. Harter, La Crosse, WI (US)
Filed on Jun. 5, 2015, as Appl. No. 14/731,614.
Prior Publication US 2015/0266692 A1, Sep. 24, 2015
Int. Cl. B65H 35/00 (2006.01); B29C 33/00 (2006.01); B29C 45/16 (2006.01)
CPC B65H 35/0026 (2013.01) [B29C 33/005 (2013.01); B29C 45/1676 (2013.01); Y10T 156/1795 (2015.01)] 2 Claims
OG exemplary drawing
 
1. A tape dispenser method involving the use of at least one of a first mold block, a second mold block and a plastic material, the tape dispenser method comprising:
the first mold block defining a first cavity system;
the second mold block defining a second cavity system;
forcing the first mold block and the second mold block together such that the first mold block and the second mold block engage each other at a mold interface;
upon forcing the first mold block and the second mold block together, the first cavity system and the second cavity system creating a total cavity;
injecting the plastic material into the total cavity;
solidifying the plastic material in the total cavity, thereby creating a tape dispenser frame comprising a first sidewall, a first flange on the first sidewall, a second sidewall, a second flange on the second sidewall, a bridge extending between the first sidewall and the second sidewall, and a first pawl extending from at least one of the first sidewall and the first flange;
the first sidewall at least momentarily extending into both the first cavity system and the second cavity system;
the second sidewall at least momentarily extending into both the first cavity system and the second cavity system;
removing the tape dispenser frame from the total cavity;
resiliently splaying the first sidewall and the second sidewall to widen a spool- receiving chamber between the first sidewall and the second sidewall;
inserting the spool into the spool-receiving chamber;
at least one of the first sidewall and the second sidewall flexing toward the spool;
the first flange and the second flange supporting the spool;
the first pawl engaging an inner diameter of the spool such that the spool can rotate more freely in one direction than in an opposite direction; and
the mold interface creating a parting line on the first pawl at a point where the first pawl engages the inner diameter of the spool.