Abdominal Strengthening Apparatus

Abstract

An abdominal strengthening apparatus is an apparatus to allow a user to perform core abdominal muscle exercises from a seated position. The abdominal strengthening apparatus includes a stationary base, a tilting arm, a supporting member, a handlebar, and a foot-supporting bar. The tilting arm is pivotably mounted to the stationary base. The supporting member is pivotably mounted to the tilting arm. The foot-supporting bar supports the user's feet and is positioned opposite to the supporting member. The handlebar is adjacently connected to the supporting member opposite to the tilting arm. In implementation, the user grasps the handlebar and exerts the user's body weight onto the handlebar. The force on the handlebar forces the supporting member downward to lever the foot-supporting bar. Therefore, the user engages the user's core muscles through use of the user's body weight to strengthen the user's core muscles.

What is claimed is: 
     
         1 . An abdominal strengthening apparatus comprises:
 a stationary base;   a tilting arm;   a supporting member;   a handlebar;   a foot-supporting bar;   the supporting member comprises a mounting rod and an adjustable tube;   the tilting arm being pivotably connected to the stationary base;   the mounting rod being pivotably connected to the tilting arm;   the adjustable tube being telescopically engaged with the mounting rod;   the adjustable tube being positioned opposite to the tilting arm, along the mounting rod;   the handlebar being adjacently connected to the adjustable tube;   the handlebar being positioned opposite to the tilting arm, along the adjustable tube;   the foot-supporting bar being perpendicularly and adjacently connected to the tilting arm; and   the mounting rod and the foot-supporting bar being positioned opposite to each other along the tilting arm.   
     
     
         2 . The abdominal strengthening apparatus, as claimed in  claim 1 , comprises:
 a rotation mechanism;   the rotation mechanism being mechanically integrated along the adjustable tube;   the rotation mechanism being positioned between the mounting rod and the handlebar; and   a rotation axis of the rotation mechanism being collinear to the mounting rod.   
     
     
         3 . The abdominal strengthening apparatus, as claimed in  claim 1 , comprises:
 a rotation mechanism;   the mounting rod being pivotably connected to the tilting arm through the rotation mechanism;   the rotation mechanism being positioned opposite to the adjustable tube, along the mounting rod; and   a rotation axis of the rotation mechanism being collinear to the mounting rod.   
     
     
         4 . The abdominal strengthening apparatus, as claimed in  claim 1 , comprises:
 the adjustable tube comprises a first tubular portion and a second tubular portion;   the first tubular portion telescopically engaging the mounting rod; and   the second tubular portion being connected to the handlebar.   
     
     
         5 . The abdominal strengthening apparatus, as claimed in  claim 4 , comprises:
 the first tubular portion being hingedly and adjacently connected to the second tubular portion.   
     
     
         6 . The abdominal strengthening apparatus, as claimed in  claim 4 , comprises:
 a tension cord;   the tension cord comprises a first cord end and a second cord end;   the first cord end being internally mounted to the first tubular portion; and   the second cord end being internally mounted to the second tubular portion.   
     
     
         7 . The abdominal strengthening apparatus, as claimed in  claim 1 , comprises:
 a pair of handgrips;   the pair of handgrips being fixed to the handlebar; and   the pair of handgrips being positioned opposite to each other along the handlebar.   
     
     
         8 . The abdominal strengthening apparatus, as claimed in  claim 1 , comprises:
 a pair of foot pedals;   the pair of foot pedals being adjacently connected to the foot-supporting bar; and   the pair of foot pedals being positioned opposite to each other along the foot-supporting bar.   
     
     
         9 . The abdominal strengthening apparatus, as claimed in  claim 8 , comprises:
 the pair of foot pedals being rotatably connected to the foot-supporting bar.   
     
     
         10 . The abdominal strengthening apparatus, as claimed in  claim 1 , comprises:
 the stationary base comprises a first base member, a second base member, and a mounting bracket;   the first base member being perpendicularly connected to the second base member;   the second base member being terminally positioned to the first base member;   the mounting bracket being centrally connected along the first base member;   the tilting arm being pivotably connected to the mounting bracket; and   the tilting arm being positioned coplanar to the first base member.   
     
     
         11 . The abdominal strengthening apparatus, as claimed in  claim 10 , wherein the mounting bracket is permanently connected to the first base member. 
     
     
         12 . The abdominal strengthening apparatus, as claimed in  claim 10 , wherein the mounting bracket is removably connected to the first base member. 
     
     
         13 . The abdominal strengthening apparatus, as claimed in  claim 1 , comprises:
 an elastic resistance mechanism;   the elastic resistance mechanism being mounted to the stationary base; and   the elastic resistance mechanism being selectively tethered to the foot-supporting bar.   
     
     
         14 . The abdominal strengthening apparatus, as claimed in  claim 13 , comprises:
 the stationary base comprises a first base member; and   the elastic resistance mechanism being mounted onto the first base member.   
     
     
         15 . The abdominal strengthening apparatus, as claimed in  claim 13 , comprises:
 the stationary base comprises a second base member; and   the elastic resistance mechanism being mounted across the second base member.   
     
     
         16 . The abdominal strengthening apparatus, as claimed in  claim 1 , comprises:
 a locking pin;   the mounting rod comprises a height-fixing aperture;   the adjustable tube comprises a plurality of mounting apertures;   the plurality of mounting apertures laterally traversing through the adjustable tube;   the plurality of mounting apertures being positioned opposite to the handlebar along the adjustable tube;   the plurality of mounting apertures being offset from each other;   the height-fixing aperture laterally traversing through the mounting rod;   the height-fixing aperture being positioned opposite to the tilting arm along the mounting rod;   the height-fixing aperture being concentrically positioned to a selected aperture of the plurality of mounting apertures; and   the locking pin engaging the selected aperture and the height-fixing aperture.   
     
     
         17 . The abdominal strengthening apparatus, as claimed in  claim 1 , comprises:
 a pivoting pin;   the stationary base comprises a mounting bracket;   the mounting bracket comprises a support aperture;   the tilting arm comprises a plurality of moment-adjusting apertures;   the plurality of moment-adjusting apertures laterally traversing through the tilting arm;   the plurality of moment-adjusting apertures being centrally positioned along the tilting arm;   the plurality of moment-adjusting apertures being positioned perpendicularly to the mounting rod;   the plurality of moment-adjusting apertures being offset from each other;   a selected aperture of the plurality of moment-adjusting apertures being concentrically positioned to the support aperture; and   the pivoting pin engaging the selected aperture and the support aperture.   
     
     
         18 . The abdominal strengthening apparatus, as claimed in  claim 1 , comprises:
 a magnetic sensor;   a permanent magnet;   a computing device;   the permanent magnet being adjacently connected to the tilting arm;   the permanent magnet being positioned between the foot-supporting bar and the mounting bracket;   the magnetic sensor being mounted onto the stationary base; and   the magnetic sensor being electronically connected to the computing device.   
     
     
         19 . The abdominal strengthening apparatus, as claimed in  claim 18 , comprises:
 wherein the magnetic sensor, the permanent magnet and the computing device are in a repetition detection state;   the permanent magnet is positioned adjacent to the magnetic sensor; and   the permanent magnet being magnetically engaged with the magnetic sensor.   
     
     
         20 . The abdominal strengthening apparatus, as claimed in  claim 18 , comprises:
 an output display;   the output display being electronically connected to the computing device; and   the output display being centrally connected to the handlebar.