US 12,257,805 B2
Spot presser assembly
Russell A. Kempka, Jr., Grafton, WI (US)
Assigned to Blanking Systems, Inc., Grafton, WI (US)
Filed by Blanking Systems, Inc., Grafton, WI (US)
Filed on Jan. 18, 2023, as Appl. No. 18/098,429.
Prior Publication US 2024/0239077 A1, Jul. 18, 2024
Int. Cl. B31B 50/14 (2017.01); B31B 50/20 (2017.01)
CPC B31B 50/142 (2017.08) [B31B 50/20 (2017.08)] 18 Claims
OG exemplary drawing
 
1. A spot presser assembly for supporting carton blanking scrap, comprising:
a housing including an inner surface defining a cavity therein, the housing having a closed end and an open end communicating with the cavity;
an intermediate plunger telescopically received in the housing, the intermediate plunger having:
an inner wall defining a passage extending therethrough; and
an outer wall radially spaced from the inner wall and having an outer surface forming a slidable interface with the inner surface of the housing, the inner and outer walls defining a biasing structure receipt cavity therebetween, wherein the intermediate plunger is slidable between a first retracted position wherein the intermediate plunger is at least substantially received with the cavity in the housing and an extended position wherein the intermediate plunger projects from the open end of the housing;
a presser plunger telescopically received in the passage of the intermediate plunger, the presser plunger having an inner surface defining a spring receipt passage, the presser plunger being slidable between a retracted position wherein the presser plunger is at least substantially received with the passage of the intermediate plunger and an extended position wherein the presser plunger projects from the passage of the intermediate plunger;
a first biasing structure having a first end received in the cavity of the housing and a second end received within the biasing structure receipt cavity of the intermediate plunger, the first biasing structure urging the intermediate plunger toward the extended position; and
a second biasing structure having a first end received in the passage of the intermediate plunger and a second end received within the spring receipt passage of the presser plunger, the second biasing structure urging the presser plunger toward the extended position.