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US 6,183,544 B2Granted
Air filter with reinforced pressure tap
AssigneeNelson Industries, Inc.
InventorsTheodore W. Ormond, Mark V. Holzmann, Jeffrey S. Morgan
Life of this patent
Estimating the term…
Abstract
An air filter (102) is provided by a housing (104) having an air inlet (106) and an air outlet (108), a main filter element (110) in the housing, a plastic outlet tube (116) having a sidewall (118) with a pressure tap opening (120) therethrough, a plastic fitting tube (122) extending from the plastic outlet tube at the pressure tap opening for receiving a pressure sensor connector (126), and an internal reinforcement member (128,146) in the plastic fitting tube resisting breakage of the latter.
Claims18
An air filter comprising:
- a housing having an air inlet and an air outlet;
- a main filter element in said housing and filtering air passing from said air inlet to said air outlet, said main filter element having a dirty side receiving air from said air inlet, and having a clean side passing filtered air to said air outlet;
- a plastic outlet tube extending from said air outlet and conducting air therefrom, said plastic outlet tube having a sidewall with a pressure tap opening therethrough communicating between the interior and exterior of said plastic outlet tube, for sensing pressure in said plastic outlet tube;
- a plastic fitting tube extending from said plastic outlet tube at said pressure tap opening for receiving a pressure sensor connector;
- an internal reinforcement member in said plastic fitting tube resisting breakage of the latter.
2 more elements
An air filter comprising:
- a housing having an air inlet and an air outlet;
- a main filter element in said housing and filtering air passing from said air inlet to said air outlet, said main filter element having a dirty side receiving air from said air inlet, and having a clean side passing filtered air to said air outlet;
- a plastic outlet tube extending from said air outlet and conducting air therefrom, said outlet tube having a sidewall with a pressure tap opening therethrough communicating between the interior and exterior of said plastic outlet tube, for sensing pressure in said plastic outlet tube;
- a plastic fitting tube extending from said plastic outlet tube at said pressure tap opening for receiving a pressure sensor connector;
- an internal reinforcement member in said plastic fitting tube resisting breakage of the latter;
- and
- an auxiliary filter element in said plastic fitting tube.
4 more elements
Dependencies are inferred from the claim text.