STUMP ARMOUR
With the help of a prosthetist, friend, and co-inventor Zach Harvey as well as feedback from others, we came up with the Stump Armour concept. This was based on my original idea of this device that could be bolted directly onto industry standard prosthetic components.
I am a combat wounded Marine with trans-femoral double above knee (AK) amputations. The development of this foot began whilst trying to find a better way to do mechanical work on the ground after injury. Every prosthetic foot that I had got in the way and I had to take them off. I also moved around on a moving dolly and creeper but my driveway was not level making working difficult. While using dolly and creeper I had to dismount to the ground so I would be able to apply any sort of pressure. I decided I needed a round foot that would allow me to walk as close as possible to the ground, on my nubs, and make getting up and down as effortless as possible. This maximizes mobility while reducing stress on the back.
I have now utilized Stump Armour in a myriad of tasks to include climbing ladders, climbing/descending steep trails, traversing loose soil on construction sites, forward/backward rolls, flipping logs, climbing piles of lumber, and I am always exploring more uses of this multipurpose foot design.
MATERIALS AND MANUFACTURING
Casting these parts has become the best option for manufacturing. We currently have stainless steel as the primary option and silicon bronze is also on the list. The new design for weaker alloys is complete so Aluminum pairs just need to be tested.. We are currently using polyurethane elastomer for the round bottom piece of the foot to replace the dense foam pictured on the prototype. For traction the whole thing gets sprayed with Rhino Liner.
Stainless steel
ASTM A 351
PSI yield: 32,100
PSI tensile 75,500
Hardness Rb 81
Aluminum
ALMAG 35
35,000 psi tensile strength
Brinell hardness 70
Silicon Bronze
95% copper
4% silicon
1% manganese
STUMP ARMOUR
With the help of a prosthetist, friend, and co-inventor Zach Harvey as well as feedback from others, we came up with the Stump Armour concept. This was based on my original idea of this device that could be bolted directly onto industry standard prosthetic components.
I am a combat wounded Marine with trans-femoral double above knee (AK) amputations. The development of this foot began whilst trying to find a better way to do mechanical work on the ground after injury. Every prosthetic foot that I had got in the way and I had to take them off. I also moved around on a moving dolly and creeper but my driveway was not level making working difficult. While using dolly and creeper I had to dismount to the ground so I would be able to apply any sort of pressure. I decided I needed a round foot that would allow me to walk as close as possible to the ground, on my nubs, and make getting up and down as effortless as possible. This maximizes mobility while reducing stress on the back.
I have now utilized Stump Armour in a myriad of tasks to include climbing ladders, climbing/descending steep trails, traversing loose soil on construction sites, forward/backward rolls, flipping logs, climbing piles of lumber, and I am always exploring more uses of this multipurpose foot design.
MATERIALS AND MANUFACTURING
Casting these parts has become the best option for manufacturing. We currently have stainless steel as the primary option and silicon bronze is also on the list. The new design for weaker alloys is complete so Aluminum pairs just need to be tested.. We are currently using polyurethane elastomer for the round bottom piece of the foot to replace the dense foam pictured on the prototype. For traction the whole thing gets sprayed with Rhino Liner.
Stainless steel
ASTM A 351
PSI yield: 32,100
PSI tensile 75,500
Hardness Rb 81
Aluminum
ALMAG 35
35,000 psi tensile strength
Brinell hardness 70
Silicon Bronze
95% copper
4% silicon
1% manganese
NEW STAINLESS STEEL TEST CAST (MOD 2) STAINLESS WITH POLYURETHANE ELASTOMER
ORIGINAL PROTOTYPE STILL IN USE
SILICON BRONZE OPTION WITH MOD 2 DESIGN
FUTURE STUMP ARMOUR DEVELOPMENTS:
COMPLETELY RUBBERIZED (OR EQUIVALENT) MODEL FOR USE INDOORS, ON BOATS, AND POSSIBLY ROOFS.
BOLT ON CLIMBING ATTACHMENTS
ELONGATED VERSION (POSSIBLY FOR SNOW?)
ICE CLIMBING VERSION
ROBOTIC FOOT ADAPTATION
COMPLETELY RUBBERIZED (OR EQUIVALENT) MODEL FOR USE INDOORS, ON BOATS, AND POSSIBLY ROOFS.
BOLT ON CLIMBING ATTACHMENTS
ELONGATED VERSION (POSSIBLY FOR SNOW?)
ICE CLIMBING VERSION
ROBOTIC FOOT ADAPTATION
WATCH STUMP ARMOUR VIDEOS ON YOUTUBE:
STUMP ARMOUR BASIC MOBILITY ADVANTAGES
SHEET METAL UP INCLINE USING STUMP ARMOUR
STUMP ARMOUR LOG FLIPPING WORKOUT
CLIMBING LADDER USING STUMP ARMOUR
WATCH STUMP ARMOUR VIDEOS ON VIMEO:
STUMP ARMOUR BASIC MOBILITY ADVANTAGES
SHEET METAL UP INCLINE USING STUMP ARMOUR
STUMP ARMOUR LOG FLIPPING WORKOUT
CLIMBING LADDER USING STUMP ARMOUR
STUMP ARMOUR BASIC MOBILITY ADVANTAGES
SHEET METAL UP INCLINE USING STUMP ARMOUR
STUMP ARMOUR LOG FLIPPING WORKOUT
CLIMBING LADDER USING STUMP ARMOUR
WATCH STUMP ARMOUR VIDEOS ON VIMEO:
STUMP ARMOUR BASIC MOBILITY ADVANTAGES
SHEET METAL UP INCLINE USING STUMP ARMOUR
STUMP ARMOUR LOG FLIPPING WORKOUT
CLIMBING LADDER USING STUMP ARMOUR