Pneumatic-aided fitness equipment

Abstract

The structure of pneumatic aided fitness equipment includes a combined piston base at the piston made by the protruding tube of the second handle, which includes a protruding column and a piston, and the protruding column can be inserted and secured into to the protruding tube of the second handle. The piston can be slid inside the horizontal tube of the first handle. A limiting clamping ring includes a clamping part and a retracting hole, the limit clamping ring being positioned at an end opening of a horizontal tube of the first handle. The retracting hole is used for said protruding tube of the second handle, and a round edge is formed around the retracting hole to block the piston of the combined piston base. By so doing, the position of the piston of the second handle is more secure, durable and practical.

1 . A structure of pneumatic-aided fitness equipment comprising: 
 a first handle, being formed in a T-shape with a vertical tube and a horizontal tube, having a grip surface placed on an outside of said vertical tube, said horizontal tube protruding out in a middle of said vertical tube;    a second handle, having a vertical press and a protruding tube extended into an inside of a press bar, said protruding tube being inserted into said horizontal tube of said first handle;    a combined piston base, being comprised of a protruding part and a piston, said protruding part being placed inside said protruding tube of said second handle, said piston being placed inside said horizontal tube of said first handle, said piston having an annular groove placed thereon, forming an O-ring, an air tight seal being formed between said piston and an inner wall of said horizontal tube, an air compression space being formed between a surface of the piston and said horizontal tube of said first handle;    a limit clamping ring, being comprised of a clamping part and a retracting hole, said limit clamping ring being positioned at an end opening of said horizontal tube of said first handle by the clamping part, said retracting hole being placed for said protruding tube of said second handle to go through, a ring edge being formed on an edge of said retracting hole to block said piston of said combined piston base, preventing separation thereof; and    a ring, placed between said horizontal tube of said first handle and said surface of said piston of said combined piston base, supporting said second handle outwardly.    
   
   
       2 . The structure of pneumatic-aided fitness equipment defined in  claim 1 , further comprising: 
 a directional ring placed on an end opening of said horizontal tube of said first handle, said directional ring having several protruding blocks spaced through out a surface of said end opening of said horizontal tube, said end opening of said horizontal tube having several concave slots spaced through out said surface of said end opening of said horizontal tube to position said protruding blocks, said directional ring having a concave edge placed therein, said protruding tube of said second handle coordinating a protruding plate to extend in an axial direction corresponding to said concave edge, said protruding tube of said second handle and said combined piston base receiving a fixed directional effect when said horizontal tube of said first handle is sliding, said second handle not being able to turn.    
   
   
       3 . The structure of pneumatic-aided fitness equipment defined in  claim 1 , wherein the clamping part of the limit clamping ring has an inner screwing pattern, a section of an outer screwing pattern thereof being placed on an end opening of said horizontal tube of said first handle.  
   
   
       4 . The structure of pneumatic-aided fitness equipment defined in  claim 1 , further comprising: 
 a pressure regulating groove, being placed on one end of said vertical tube of said first handle, an outer end of said pressure regulating groove being an opening, said opening having a screw thread placed on an outside thereof, a partition being placed between said pressure regulating groove and said horizontal tube, said partition having a through air hole for connection, so that air pressure inside said air compression space formed between said horizontal tube and said piston releases from said through air hole, one side of said opening having an air hole placed thereon, an outer area thereof having an air hole to interconnect with said outer area; and    a knob, having a tube, placed inside said pressure regulating groove of said vertical tube inside a tube, and a regulating column placed in a center of a bottom of a tube corresponding to said through air hole of said partition of said pressure regulating groove, an expanded knob head being formed on a top end of said tube, the knob head having a screw slot being screwed with said screw thread of said opening of the pressure regulating groove, adjusting an upper and lower position of said tube by adjusting direction in clockwise and counter clockwise directions, making an opening and closing level of said regulation column and said through air hole achieve adjustment of air pressure.    
   
   
       5 . The structure of pneumatic-aided fitness equipment defined in  claim 4 , wherein said regulating column of said knob is a cone, said through hole of said pressure regulating groove being a cone.  
   
   
       6 . A structure of pneumatic-aided fitness equipment, comprising: 
 a middle base, being comprised of a vertical tube and two horizontal tubes, said two horizontal tubes protruding out both sides of said vertical tube;    press handles, each handle in a T-shaped tube with one press bar and a protruding bar extending inside said press bar, said T-shaped tube being inserted into the horizontal tube of said middle base;    two combined piston bases, each combined piston base being comprised of a protruding column and a piston, said protruding column being inserted and secured into the protruding T-shaped tube of each handle, said piston being slidable into the horizontal tube of said middle base, said piston having an O-ring sealed within an inner wall of said horizontal tube, an air compression space being formed between the inner wall of the horizontal tube for said first handle;    two limit clamping rings, each ring being comprised of a clamping part and a retracting hole, the limit clamping ring using said clamping part to position each ring on an end opening of said horizontal tube of said first handle, said retracting hole being used for said protruding T-shaped tube of said second handle, said retracting hole having a ring edge formed on an edge thereof, said piston of the combined piston base being kept from breaking off; and    two rings, placed between the horizontal tube of said middle base and a surface of said piston of said combined piston base to support the two handles outward.    
   
   
       7 . The structure of pneumatic-aided fitness equipment defined in  claim 6 , wherein said clamping part of each limit clamping ring having an inner screwing pattern, a section of said outer screwing pattern being placed on an end opening of a horizontal tube of said first handle.  
   
   
       8 . The structure of pneumatic-aided fitness equipment defined in  claim 6 , further comprising: 
 a pressure regulating groove being placed on one end of said vertical tube, an outer end of said pressure regulating groove being an opening, said opening having a screw thread placed on an outside of said opening, a partition being placed between said pressure regulating groove and said horizontal tube, said partition having only a through air hole for connection, air pressure inside an air compression space formed between said horizontal tube and said piston being released from a through air hole, an air hole being placed on one side of said opening of said pressure regulating groove and having an air hole to interconnect with an outer area thereof;    a knob, having a tube placed inside said pressure regulating groove of said vertical tube inside a tube and a regulating column placed in a center of a bottom of said tube corresponding to said through air hole of said partition of said pressure regulating groove, an expanded knob head being formed on a top end of said tube, said knob head having a screw slot being in screwing arrangement with a screw thread of said opening of said pressure regulating groove, adjusting an upper and lower position of said tube by adjusting direction in a clockwise and counter clockwise direction, making an opening and closing level of said regulation column and said through air hole to achieve adjustment of air pressure.    
   
   
       9 . The structure of pneumatic-aided fitness equipment defined in  claim 8 , wherein said regulating column of said knob is a cone, said through hole of said pressure regulating groove being a cone.  
   
   
       10 . The structure of fitness equipment defined in  claim 6 , further comprising: 
 a directional ring placed on an end opening of said horizontal tube of said first handle, said directional ring having several protruding blocks spaced through out a surface of said end opening of said horizontal tube, said end opening of said horizontal tube having several concave slots spaced through out said surface of said end opening of said horizontal tube to position said protruding blocks, said directional ring having a concave edge placed therein, said protruding tube of a second handle coordinating a protruding plate to extend in an axial direction corresponding to said concave edge, said protruding tube of said second handle and said combined piston base receiving a fixed directional effect when said horizontal tube of said first handle is sliding, said second handle not being able to turn.