US 12,251,601 B2
Portable calf building machine
Jesus Gutierrez, Colorado Springs, CO (US)
Filed by Jesus Gutierrez, Colorado Springs, CO (US)
Filed on Mar. 7, 2023, as Appl. No. 18/118,278.
Prior Publication US 2024/0299802 A1, Sep. 12, 2024
Int. Cl. A63B 23/08 (2006.01); A63B 21/00 (2006.01); A63B 21/02 (2006.01); A63B 21/04 (2006.01); A63B 23/035 (2006.01)
CPC A63B 23/08 (2013.01) [A63B 21/00069 (2013.01); A63B 21/023 (2013.01); A63B 21/0421 (2013.01); A63B 21/4034 (2015.10); A63B 21/4047 (2015.10); A63B 23/03508 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An exercise device comprising:
a base plate and a foot plate connected by a hinge on a respective end of the base plate and the foot plate, each of the base plate and foot plate having lateral sides, an outside surface and a shared inside surface;
a chassis configured to receive the base plate and the foot plate and to define an angle adjustment track resembling an arc for a control of a movement of the foot plate relative to the base plate in the chassis;
a plurality of graduated springs comprising a common displacement length between the base plate and the foot plate; and
an adjustment knob configured to fix a lever rod received in the adjustment track and set a maximum displacement length of the graduated springs.