US 12,070,643 B1
Supplemental resistance device for selectorized weight training machines
Alexander Kim, Valencia, CA (US); and Robert Simerson, III, Stanton, CA (US)
Assigned to Stack Bands, LLC, Valencia, CA (US)
Filed by Stack Bands LLC, Valencia, CA (US)
Filed on Dec. 5, 2023, as Appl. No. 18/529,238.
Claims priority of provisional application 63/518,437, filed on Aug. 9, 2023.
Int. Cl. A63B 21/04 (2006.01); A63B 21/055 (2006.01); A63B 21/062 (2006.01)
CPC A63B 21/0428 (2013.01) [A63B 21/0557 (2013.01); A63B 21/0628 (2015.10)] 9 Claims
OG exemplary drawing
 
1. A supplemental resistance device for selectorized weight training machines, comprising:
a dual-sided top pin assembly having:
a first side comprising a first base plate and a first plurality of pins attached to the first base plate, each pin of the first plurality of pins having a first diameter and having a first pin spacing distance between the pins;
a second side comprising a second base plate and a second plurality of pins attached to the second base plate, each pin of the second plurality of pins having a second diameter and having a second pin spacing distance between the pins;
a first attachment point for attachment of an elongatable resistance component, the first attachment point connecting the first base plate and the second base plate on the first and second sides of the top pin assembly;
a dual-sided bottom pin assembly having:
a first side comprising a third base plate and a third plurality of pins attached to the third base plate, each pin of the third plurality of pins having the first diameter and having the first pin spacing distance between the pins;
a second side comprising a fourth base plate and a fourth plurality of pins attached to the fourth base plate, each pin of the fourth plurality of pins having the second diameter and having the second pin spacing distance between the pins;
a second attachment point for attachment of an elongatable resistance component, the second attachment point connecting the third base plate and the fourth base plate on the first and second sides of the bottom pin assembly; and
an elongatable resistance component configured to be attached between the first attachment point of the dual-sided top pin assembly and the second attachment point of the dual-sided bottom pin assembly;
wherein:
insertion of the top pin assembly into a weight stack of a selectorized weight training machine provides a top anchor for the elongatable resistance component;
insertion of the bottom pin assembly into the weight stack at a position below the inserted top pin assembly provides a bottom anchor for the elongatable resistance component; and
attachment of the elongatable resistance component between the top pin assembly and the bottom pin assembly provides supplemental resistance to an amount of weight selected on the selectorized weight training machine.