The document describes a new air-shock spoke wheel called a "shweel" that is being developed as an alternative to pneumatic tires for large mining trucks. Some key points: 1) Shweels are made of steel and rubber and are always in stock locally, unlike tires which can experience shortages. 2) They are expected to last 10 times longer than tires and be completely recyclable. 3) By reducing rolling resistance by 30%, shweels are estimated to save mining operators 15% on fuel costs per truck over standard tires.

1. Air-Shock -Spoke Wheel
for the
CAT 797 Trucks
Copyright ©, 2014 LLC, 2012.
Pat. Pend. All rights reserved.

2.  Occasional supply shortages
 Regulated shipping
 $40K / 8 months use (6,000 hrs)
 Fire, heat, cuts and wear problems
 Regulated disposal (5T of rubber)

3.  Always in stock -- Local mfg
 Shipped in segments on flatbeds
 Mfg cost 1/3 of current tire price ($ 14K)
 10x useful life (60,000 hrs - 7 years)
 Completely recyclable (5 tons of steel)
 Airless, fireproof, saves 15% fuel

5. The hub leads the rim.
The load gains eccentricity.
Its torque assist rolling.
Reduced rolling radius,
preserved contact radius.

6.  30% reduction of rolling resistance
 15% fuel savings (& CO2, NOx)
 Works against slippage and digging-in
on snow, sand and mud
300 15%
Equivalent Grade (%)
Rolling Resistance
10%
(lbs/ton)
200
Inflated
100 5%
Shweel
0 0%
Concrete, Erath, Earth, Mud,
smooth maintained muddy loose sand

7.  Improves riding stability, safety
and comfort
 Gripper-block-inserts or
traction-belt and shocks are
individually replaceable
 Reduces impacts on drivetrain

8. The shweel segments negotiate
obstacles independently
2 or 3 segments make up for
one 797 wheel

10. XYZ3 Pre-Mold by Michelin
Ships in rolls

13.  Is there any performance grading?
 GR 5 -15, corresponding to RA 5-15%
 Does lower-grade shweel costs less?
 GR 15 →100%, GR 10 →90%, …, GR 5 →80%
 How much fuel a CAT797 can save on shweels?
 15% (30 gal/hr)

14. Kinetics Kinematics
Gravity adds torque . Small rolling radius, high contact radius.

15. Tweel (Tire Wheel) rubber spokes
Spare
Tire
Wheel
Machine

17. One set of shweels pays for two new trucks by fuel savings.
For more on shweels, please
visit www.shweel.us or
email to 2014LLC@cox.net.