Folding multi-purpose exercise apparatus with exchangeable engines

Abstract

An exercise machine that can fold up for storage in a closet, provides a complete set of different exercises, and allows change-out of different types of engines including weight stack or weight engines and extension engines where one or more elastic members is extended such as a bungee engine. The present invention can be supplied fully cabled so that no cable installation is needed. The lower frame can be assembled by pivoting into place and can be secured with fasteners or at most two bolts. The press arms and other features can also be secured with fasteners or at most two bolts. The bottom seat/back seat can be pre-assembled and easily removable. The weight stack or bungee rack can be removed and changed or re-installed. All parts can be held in place with either fasteners or a small number or easily removable bolts.

1 . A multi-purpose exercise apparatus comprising a frame, a seat, and a force engine, said force engine adapted for performing a plurality of exercises, said force engine being removable by a user and replaceable by a force engine of a different type. 
   
   
       2 . The multi-purpose exercise apparatus of  claim 1  wherein said force engine is a weight stack. 
   
   
       3 . The multi-purpose exercise apparatus of  claim 1  wherein said force engine is a bungee engine. 
   
   
       4 . The multi-purpose exercise apparatus of  claim 1  further comprising a central pivot point about which said machine can fold for storage. 
   
   
       5 . A multipurpose exercise machine comprising a vertical frame, a force engine coupled to said vertical frame, said force engine providing resistance force for a pull down bar, a press arm and a cable pull, said force engine being removable from said vertical frame and wherein said machine is foldable for storage. 
   
   
       6 . The multipurpose exercise machine of  claim 5  wherein said force engine is a weight stack. 
   
   
       7 . The multipurpose exercise machine of  claim 5  wherein said force engine is a bungee engine. 
   
   
       8 . The multipurpose exercise machine of  claim 5  wherein said force engine is attached to said vertical frame with a plurality of fasteners. 
   
   
       9 . The multipurpose exercise machine of  claim 5  wherein said engine is replaceable by an engine of a different type. 
   
   
       10 . A multipurpose exercise machine comprising a vertical frame, a force engine coupled to said vertical frame, said force engine providing resistance force for a pull down bar, a press arm and a cable pull, said multipurpose exercise machine also including an adjustable seat and an adjustable backpad, said multipurpose exercise machine being foldable for storage in a closet. 
   
   
       11 . The multipurpose exercise machine of  claim 10  wherein said force engine is a weight stack. 
   
   
       12 . The multipurpose exercise machine of  claim 10  wherein said force engine is a bungee engine. 
   
   
       13 . The multipurpose exercise machine of  claim 10  wherein said force engine is attached to said vertical frame with a plurality of fasteners. 
   
   
       14 . The multipurpose exercise machine of  claim 10  wherein said force engine is replaceable by an engine of a different type.