Back to results
US 2004/0000836 A1Published application
Brush and electric rotary device having the same
OwnerMasashi Okubo, Morinobu Endoinventors
Life of this patent
Estimating the term…
Abstract
The brush is capable of reducing contact resistance between the brush and a commutator, improving efficiency of a motor and restricting exhaustion of the brush. The brush includes carbon nano fibers and/or carbon nano tubes whose outermost layers have electric conductivity.
Claims14
A brush including carbon nano fibers whose outermost layers have electric conductivity.
A brush including carbon nano tubes whose outermost layers have electric conductivity.
An electric rotary device,
- comprising a brush including carbon nano fibers whose outermost layers have electric conductivity.
An electric rotary device,
- comprising a brush including carbon nano tubes whose outermost layers have electric conductivity.
Dependencies are inferred from the claim text.