IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0793006
(2013-03-11)
|
등록번호 |
US-8702831
(2014-04-22)
|
발명자
/ 주소 |
- Scott, James
- Gieseke, Steven
- Iddings, Douglas
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
117 |
초록
▼
The disclosure concern air cleaners. Preferred air cleaners are shown which include a housing and a removable and replacement primary filter cartridge. Optional and advantageous features are shown. The preferred primary filter cartridge is conical in shape. A preferred optional safety or secondary f
The disclosure concern air cleaners. Preferred air cleaners are shown which include a housing and a removable and replacement primary filter cartridge. Optional and advantageous features are shown. The preferred primary filter cartridge is conical in shape. A preferred optional safety or secondary filter cartridge is shown. Preferred methods of assembly and use are provided.
대표청구항
▼
1. An air filter cartridge comprising: (a) first and second, opposite, ends; (i) the first end having an air flow exit aperture therethrough;(b) a conical extension of filter media, extending between the first and second ends, surrounding an open interior and defining a central cartridge axis;(c) a
1. An air filter cartridge comprising: (a) first and second, opposite, ends; (i) the first end having an air flow exit aperture therethrough;(b) a conical extension of filter media, extending between the first and second ends, surrounding an open interior and defining a central cartridge axis;(c) a first, open, end cap adjacent the first end of the filter cartridge;(d) a housing seal positioned on the first end cap and including a seal surface directed radially, with respect to the cartridge central axis, to form a removable seal with a portion of an air cleaner, in use; and,(e) a second, closed, end cap adjacent the second end of the filter cartridge; (i) the second end cap having a central portion including: an inner surface portion in overlap with the central interior and directed toward the first end cap; and, an outer surface opposite the inner surface portion;(ii) the second end cap central portion axially projecting inwardly of the filter cartridge to a location surrounded by media and defining an outer surface recess in the outer surface thereof;(iii) the central portion including a central projection on the outer surface surrounding and defining an inner recess in the inner surface that is open toward the first end cap; and,(iv) the outer surface recess surrounding the central projection on the outer surface. 2. An air filter cartridge according to claim 1 wherein: (a) the first, open, end cap includes a molded-in-place portion with the housing seal formed integral therewith. 3. An air filter cartridge according to claim 2 wherein: (a) the inner recess in the inner surface extends at least 10 mm. 4. An air filter cartridge according to claim 2 wherein: (a) the central projection on the outer surface has a conical sidewall. 5. An air filter cartridge according to claim 2 wherein: (a) the second end cap includes a molded-in-place portion in which the second end of the media is embedded. 6. An air filter cartridge according to claim 5 wherein: (a) the second end cap comprises a preformed central section that includes a portion embedded in the molded-in-place portion. 7. An air filter cartridge according to claim 6 wherein: (a) the filter cartridge includes a liner extending from the first end cap to the second end cap. 8. An air filter cartridge according to claim 7 wherein: (a) the preformed central section is integral with the liner. 9. An air filter cartridge according to claim 7 wherein: (a) the liner is an outer liner. 10. An air filter cartridge according to claim 2 wherein: (a) the central portion of the second end cap extends inwardly of the filter cartridge a distance of at least 20 mm. 11. An air filter cartridge according to claim 1 wherein: (a) the media has a conical angle of 1-10°. 12. An air filter cartridge according to claim 1 wherein: (a) the media has a conical angle of 2-7°. 13. An air filter cartridge according to claim 1 wherein: (a) (a) the second, closed, end cap includes a preform including: (i) a central, imperforate, end region; and,(ii) an outer perforate region embedded in, and closed by, a molded-in-place portion of the second end cap. 14. An air filter cartridge according to claim 1 wherein: (a) the media is pleated. 15. An air filter cartridge according to claim 1 wherein: (a) the housing seal is a radially outwardly directed seal. 16. An air filter cartridge according to claim 14 wherein: (a) the first end cap has a larger outer perimeter cross-dimension than the second end cap. 17. An air cleaner comprising: (a) a housing having an interior and comprising a body section with an open end closed by a removable access cover; and,(b) a main filter cartridge operably positioned within the housing interior; the main filter cartridge comprising: (i) first and second, opposite, ends; (A) the first end having an air flow exit aperture therethrough;(ii) a conical extension of filter media, extending between the first and second ends, surrounding an open interior and defining a central cartridge axis;(iii) a first, open, end cap adjacent the first end of the main filter cartridge;(iv) a housing seal positioned on the first end cap and including a seal surface directed radially with respect to the cartridge central axis and forming a removable seal with a portion of an air cleaner; and,(v) a second, closed, end cap adjacent the second end of the filter cartridge; (A) the second end cap having a central portion including: an inner surface portion in overlap with the central interior and directed toward the first end cap; and, an outer surface opposite the inner surface portion;(B) the second end cap central portion axially projecting inwardly of the filter cartridge to a location surrounded by media and defining an outer surface recess in the outer surface thereof;(C) the central portion including a central projection on the outer surface surrounding and defining an inner recess in the inner surface portion that is open toward the first end cap; and,(D) the outer surface recess surrounding the central projection on the outer surface. 18. An air cleaner according to claim 17 wherein: (a) the access cover includes a projection extending into the outer surface recess to a location surrounding the central projection on the outer surface. 19. An air cleaner according to claim 17 wherein: (a) the projection on the access cover extends at least 15 mm into the cartridge; and,(b) the central projection on the outer surface extends at least 10 mm. 20. An air cleaner according to claim 17 including: (a) a safety filter cartridge having a conical extension of media and positioned with the media of the safety filter surrounded by the media of the main filter cartridge; the safety filter having an end with a central projection extending into the inner recess of the central projection on the main filter cartridge second end cap. 21. A method of preparing an air filter cartridge for use in an air cleaner assembly; the method comprising steps of: (a) forming pleated media around an open center and into a conical shape having first and second, opposite, ends; (i) the first end of the media having a larger outer perimeter size than a second end of the media;(b) molding a first open end cap onto the first end of the media; (i) the step of molding a first open end cap including molding a housing seal, with a radially directed housing seal surface, as part of the first end cap; and,(c) positioning a second end cap on the second end of the media; (i) the step of positioning including positioning a central preform, with a central closed section, at the second end of the media;(ii) the step of positioning including molding in place a portion of the second end cap to the first end of the media, with the media embedded therein, while securing the central preform in place; and,(iii) the step of positioning a central preform at the second end comprises positioning a preform having: (A) a central portion including: an inner surface portion facing toward the first end of the media; and, an opposite outer surface portion;(B) a portion extending toward the first end of the media a maximum distance of at least 15 mm; and,(C) the central portion including a central projection on the outer surface portion extending away from the first end of the media and surrounding an inner recess on the inner surface portion. 22. A method according to claim 21 wherein: (a) the step of molding a first open end cap is conducted before the step of positioning the second end cap. 23. A method according to claim 21 wherein: (a) the step of molding a first open end cap is conducted after the step of positioning the second end cap. 24. A method according to claim 21 wherein: (a) the step of molding the first end cap comprises molding the first end cap from foamed polyurethane; and,(b) the step of molding in place a portion of the second end cap comprises molding that portion from foamed polyurethane.
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