Climbing exercise apparatus

1. An exercise apparatus, comprising:

a) a frame;

b) a first pair of pulleys and a second pair of pulleys are rotatably connected to said frame, said first pair of pulleys and said second pair of pulleys each including an upper pulley vertically spaced from a lower pulley;

c) a first endless belt routed about said first pair of pulleys and a second endless belt routed about said second pair of pulleys;

d) a first pair of carriage members and a second pair of carriage members coupled to said first endless belt and said second endless belt, respectively;

e) a rack pin movably secured to each said first and second pair of carriage members; and

f) a pinion gear rotatably supported by each said first and second pair of carriage members, said pinion gear actuable to move said rack pin for selectively coupling said first and second pair of carriage members to respective said first endless belt and said second endless belt.

2. The exercise apparatus of claim 1 further including a handlebar and a foot support member connected to respective said first and second pair of carriage members.

3. The exercise apparatus of claim 1 wherein each carriage member of said first and second pair of carriage members includes a carriage chassis and further including rollers rotatably secured to each said carriage member.

4. The exercise apparatus of claim 1 further including a transverse cross shaft rotatably coupled to said frame, right and left timing pulleys rigidly secured proximate to opposite distal ends of said transverse cross shaft, said right and left timing pulleys engaging each said first and second endless belt, respectively.

5. The exercise apparatus of claim 4 further including a resistance unit coupled to said transverse cross shaft.

6. The exercise apparatus of claim 5 wherein said resistance unit includes mechanical friction resistance or magnetic resistance.

7. The exercise apparatus of claim 1 wherein said pinion gear is fixedly secured to a distal end of a pinion shaft, and further including a knob fixedly secured to an opposite distal end of said pinion shaft, wherein rotation of said knob translates to lateral movement of said rack pin.

8. The exercise apparatus of claim 1 further including a first clamp and a second clamp fixedly secured to opposite sides of each said first pair of carriage members and said second pair of carriage members, said first clamp configured to connect to a first span of said first endless belt and said second endless belt, respectively, and said second clamp configured to connect to a second span of said first endless belt and said second endless belt, respectively.

9. An exercise apparatus, comprising:

a) a frame;

b) a first endless belt rotatably secured to said frame;

c) a second endless belt rotatably secured to said frame; and

d) a pair of hand grip carriage members secured to said first endless belt, and a pair of foot support carriage members secured to said second endless belt;

e) wherein said first pair of hand grip carriage members include a right hand grip secured to a right span of said first endless belt and a left hand grip secured to a left span of said first endless belt, and said pair of foot support carriage members include right and left foot platforms fixedly secured to respective right and left spans of said second endless belt; and

f) wherein said left hand grip includes a swing arm selectively engageable with a respective said right and left spans of said second endless belt.

10. The exercise apparatus of claim 9 further including a first pair of stop members fixedly secured to said left span of said second endless belt and a second pair of stop members fixedly secured to said right span of said second endless belt, said first pair of stop members and said second pair of stop members spaced apart from one another defining a first gap and a second gap therebetween, respectively.

11. The exercise apparatus of claim 10 wherein said left hand grip includes a swing arm selectively engageable with said first pair of stop members and said second pair of stop members, respectively.