IP Library Granted Patent US 12,539,445
Granted Patent B2
US 12,539,445 · App. 18/182,487 · Granted Feb 3, 2026

Squat and spinal fitness and rehabilitation device

Inventor: Richard Duenas (West Hartford, CT)
Assignee: Richard Duenas
A63B23/0405A63B21/0552A63B21/4011A63B2023/0411A63B2208/0223A63B2225/093
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Quick Facts
Patent No.
US 12,539,445
App. No.
18/182,487
Granted
Feb 3, 2026
Kind
B2
Abstract

An exercise device including a frame extending across a first plane, the frame defining vertical stabilization bars extending in a second plane, the frame further defining a horizontal cross bar connecting the vertical stabilization bars and configured for supporting a lower leg of a user. A swivel base couples to the frame for supporting a foot of the user. The swivel base may be fixed in a variety of positions as well as set to somewhat freely rotate while coupled to a bias spring.

Claims (34)

1 . An exercise device comprising:

a frame extending across a first plane;

a vertical stabilization bar extending in a second plane, the first and second plane perpendicular to each other;

a plurality of supporting legs extending opposite the vertical stabilization bar relative to the frame, and forming a clearance underneath the frame; and

a swivel base disposed within the frame, the swivel base pivotably connected to the frame such that the swivel base is configured to swing into the clearance along a travel arc, below the first plane.

2 . The exercise device of claim 1 , wherein:

the swivel base includes a toe and heel portion,

the heel portion is pivotably connected to the frame via an axle, and

the toe portion is connected to the frame via a spring.

3 . The exercise device of claim 2 , wherein the axle propagates from a first socket in the frame, through the swivel base along a dimension perpendicular to a span between the toe and heel portion, and terminates at a second socket in the frame opposite the first socket.

4 . The exercise device of claim 1 , wherein upon force activation, the swivel base is configured to swing into the clearance along the travel arc, below the first plane.

5 . The exercise device of claim 1 , further comprising a locking assembly, configured for locking the swivel base to be substantially in-line with the frame.

6 . An exercise device comprising:

a frame encompassing a platform for supporting a foot of a user;

two vertical stabilization bars coupled to the frame;

a lower leg support brace mounted to the platform; and

a plurality of supporting legs extending opposite the two vertical stabilization bars relative to the frame, and forming a clearance underneath the frame;

wherein the platform is configured to pivot relative to the frame into the clearance.

7 . The exercise device of claim 6 , wherein:

the platform includes a toe and heel portion,

the heel portion is pivotably connected to the frame via an axle, and

the toe portion is connected to the frame via a spring.

8 . The exercise device of claim 7 , wherein the axle propagates from a first socket in the frame, through the platform along a dimension perpendicular to a span between the toe and heel portion, and terminates at a second socket in the frame opposite the first socket.

9 . The exercise device of claim 6 , wherein upon force activation, the platform is configured to pivot into the clearance.

10 . The exercise device of claim 6 , further comprising a locking assembly, configured for locking the platform to the frame.

11 . The exercise device of claim 10 , wherein the locking assembly includes an alcove defined in both the frame and the rotatable standing platform, and a dual hook clip for fastening to each alcove.

12 . An exercise device comprising:

a frame extending across a first plane, elevated by a support to form a clearance; and

a rotatable standing platform disposed within the frame, the rotatable standing platform having a toe and heel portion, the heel portion pivotably connected to the frame via an axle, and the toe portion connected to the frame via a spring,

wherein upon force activation, the rotatable standing platform is configured to pivot into the clearance, distancing from the frame along a travel arc path.

13 . The exercise device of claim 12 , wherein the axle propagates from a first socket in the frame, through the rotatable standing platform along a dimension perpendicular to a span between the toe and heel portion, and terminates at a second socket in the frame opposite the first socket.

14 . The exercise device of claim 12 , further comprising a locking assembly, configured for locking the rotatable standing platform to the frame.

15 . The exercise device of claim 14 , wherein the locking assembly includes an alcove defined in both the frame and the rotatable standing platform, and a dual hook clip for fastening to each alcove.

16 . The exercise device of claim 12 , further comprising a leg support structure for cradling and supporting the lower leg of a user.

Continuity (6)
Continuation In Part 17368408 · Jul 6, 2021
Continuation 16593270 · Oct 4, 2019
Division 15167728 · May 27, 2016
Provisional Application 62169188 · Jun 1, 2015
Provisional Application 62169174 · Jun 1, 2015
Related Publication 20230211204A1 · Jul 6, 2023
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