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US RE51,044 E1Granted
Filtration assembly and system
AssigneeWalk Industrial, Inc.
InventorsTyler G. Walk, Mitch P. Walk
Life of this patent
Estimating the term…
Abstract
A filter includes filter media and defines an inner plenum. The inner plenum has a cross-sectional dimension extending crosswise of the filter. The cross-sectional dimension decreases from adjacent the upstream side toward to downstream wall to a location disposed intermediate the upstream side and the downstream wall. The cross-sectional dimension of the inner plenum increases from adjacent the intermediate location toward the downstream wall.
Claims19
A filter assembly comprising:
- a main filter having an upstream side and a downstream side through which air is configured to flow, the main filter including
- at least one sidewall comprising filter media and extending between the upstream side and the downstream side,
- a back wall comprising filter media and disposed at the downstream side of the main filter, wherein the back wall and the at least one sidewall define an interior of the main filter, and
- an upstream opening defined by the upstream side of the main filter in communication with the interior of the main filter;
- and
- a front filter at the upstream side of the main filter, the front filter configured to restrict airflow into the interior of the main filter, the front filter defining an aperture in communication with the interior of the main filter and configured to allow air to bypass the front filter and flow unimpeded therethrough and into the interior of the main filter,
- wherein the front filter is inverted toward the downstream side of the main filter,
- wherein the back wall of the main filter is convex toward the front filter.
5 more elements
A filter assembly comprising:
- a main filter having an upstream side and a downstream side through which air is configured to flow, the main filter including a back wall comprising filter media and disposed at the downstream side of the main filter;
- and
- a front filter at the upstream side of the main filter, the front filter configured to restrict airflow into the interior of the main filter, the front filter defining an aperture in communication with the main filter and configured to allow air to bypass the front filter and flow unimpeded therethrough and to the main filter,
- wherein the front filter is inverted toward the downstream side of the main filter,
- wherein the back wall of the main filter is convex toward the front filter.
2 more elements
Dependencies are inferred from the claim text.