Air cleaner for motorcycles
AssigneeAkira Sasaki
InventorAkira Sasaki
Life of this patent
Estimating the term…
Abstract
A conical frustum shaped air cleaner comprised of a porous foam material in multiple layers. A cavity opening is formed at the center section of the flat bottom surface of the cleaner. The airflow resistance through the aforementioned foam material formed in the tapered side section of the cleaner is different from the airflow resistance through the foam material comprising the upper-surface section of the air cleaner. The desired airflow resistance is also controlled by selecting the appropriate number of layers, the appropriate thickness and the appropriate foaming ratio of the applicable foam materials that comprise the side-surface section and upper-surface section of the air cleaner.
Claims7
An air filter for a combustion engine, comprising:
- a filtration membrane;
- a continuous side surface and a bottom surface, wherein
- said side surface has at least two layers of said filtration membrane, and
- said bottom surface has at least one layer less than said side surface of said filtration membrane and where said side surface is more air resistant than said bottom surface.
An air filter for a combustion engine, comprising:
- an outer filtration membrane and an inner filtration membrane;
- a continuos side surface and a bottom surface both made of said filtration membranes, wherein
- said side surface filtration membrane is thicker and more airflow resistant than said bottom surface filtration membrane;
- wherein at least said outer filtration membrane covers said inner filtration membrane and;
- where said outer filtration membrane has a coarser foaming ratio than said inner filtration membrane.
An air filter for a combustion engine, comprising:
- a first conical filtration membrane and a second conical filtration membrane;
- a continuous side surface made from said first conical filtration membrane and a bottom surface made from said second conical filtration membrane;
- wherein the porosity of said bottom surface of said conical second filtration membrane is greater than the porosity of said side surface first conical filtration membrane and a foaming ratio of said side surface is finer than a foaming ratio of said bottom surface such that said side surface has greater airflow resistance than said bottom surface.
Dependencies are inferred from the claim text.