Air cleaner assembly
AssigneeBriggs & Stratton Corporation
InventorsMichael Honisch, Clian Campbell, Derron Bohne, John McDonald
Life of this patent
Estimating the term…
Abstract
An air cleaner that includes a first housing portion having a non-circular attachment fit. A second housing portion is attached to the first housing portion to define a filter space. A filter element includes a non-circular filter aperture that defines a perimeter that is completely defined by four equal arc length segments. The filter aperture is engageable with the attachment fit. The attachment fit and the filter aperture are sized to provide substantially equal contact pressure around the perimeter of the filter aperture when engaged with one another.
Claims37
An air cleaner comprising:
- a first housing portion including a non-circular attachment fit;
- a second housing portion attached to the first housing portion to define a filter space;
- and
- a filter element including a non-circular filter aperture having a perimeter, the perimeter engageable with the attachment fit, the attachment fit and the filter aperture sized to provide substantially equal contact pressure around the perimeter when the perimeter is engaged with the attachment fit.
A filter element for use in an air cleaner having an attachment fit, the filter element comprising:
- a substantially oval filter perimeter defining an outlet, the perimeter including a filter end portion having a filter end stiffness and a filter side portion having a filter side stiffness, the filter perimeter engageable with the attachment fit;
- and
- a stiffening member disposed outside of the outlet and adjacent the filter side portion such that the filter side stiffness is substantially equal to the filter end stiffness when the filter perimeter is engaged with the attachment fit.
A filter element for use with an air cleaner having an attachment perimeter, the filter element comprising:
- a first end cap;
- a second end cap including a perimeter that defines a first side portion having a side stiffness, a first end portion having an end stiffness, and an outlet aperture;
- a filter media disposed between the first end cap and the second end cap;
- and
- a stiffening member positioned to increase the side stiffness relative to the end stiffness.
Dependencies are inferred from the claim text.