Air transfer system

• US 4,856,826 A
• Filed: 04/27/1988
• Issued: 08/15/1989
• Est. Priority Date: 04/27/1988
• Status: Expired due to Term

• Current Assignee: Donaldson Company Incorporated
• Original Assignee: Donaldson Company Incorporated
• Inventors: Engel, Donald F., Gieseke, Steven S.
• Primary Examiner(s): Falk, Joseph
• Application Number:
  US07/186,585
• Time in Patent Office: 475 Days
• Field of Search: 285/253, 285/181, 285/903, 285/259
• US Class Current: 285/181
• CPC Class Codes: F02M 35/02 Air cleaners
• CPC Class Codes: F02M 35/10137 Flexible ducts, e.g. bellows or hoses
• CPC Class Codes: F02M 35/10144 Connections of intake ducts to each other or to another device
• CPC Class Codes: F02M 35/164 Heavy duty vehicles, e.g. trucks, trains, agricultural or construction machines
• CPC Class Codes: F16L 37/084 combined with automatic locking
• CPC Class Codes: Y10S 285/903 Corrugated

Abstract

An air flow conduit system is presented for air flow communication between an air filter mechanism and an engine intake manifold. The conduit system comprises first, second and third substantially rigid conduit members. Engagement between conduit members is provided by means of a rib system on a narrow end of a conduit member being received within a broad end of a next adjacent conduit member. Sealing engagement occurs by means of an elastomeric seal member positioned between the ribs and an end of a conduit member within which the ribs are received. A preferred rib arrangement is provided, to insure a flexible, multi-point, seal system.

Claims

1. A conduit system for providing air flow communication between an air filter assembly and an air intake manifold, said conduit system comprising:

(a) a substantially rigid first conduit member having;

inner and outer surfaces;

first and second opposite ends, and first and second opposite end portions;

(i) said first conduit member first end portion being constructed and arranged for air flow communication with an exit port on the air filter assembly;

(ii) said first conduit member second end portion comprising a narrow end portion with a plurality of spaced annular ribs thereon, each of said ribs having a sharply defined central ridge;

(b) a central conduit arrangement having;

inner and outer surfaces;

first and second opposite ends; and

, first and second opposite end portions;

(i) said central conduit arrangement first end portion being a broad end portion constructed and arranged for receipt of said first conduit member second end portion therein, through said central conduit arrangement first end;

(ii) said central conduit arrangement second end portion comprising a narrow end portion with a plurality of spaced annular ribs thereon, each of said ribs having a sharply defined central ridge;

(c) a substantially rigid end conduit member having;

inner and outer surfaces;

first and second opposite conduit ends; and

, first and second opposite end portions;

(i) said end conduit member first end portion being a broad end portion constructed and arranged for receipt of said central conduit arrangement second end portion therein, through said end conduit member first end;

(ii) said end conduit member second end portion being constructed and arranged for air flow communication with an inlet port on the air intake manifold;

(d) a first elastomeric seal member positionable between annular ribs on said first conduit member second end portion, and said central conduit-arrangement first end portion; and

,

(e) a second elastomeric seal member positionable between annular ribs on said central conduit arrangement second end portion and said end conduit member first end portion.

2. A system according to claim 1 wherein:

(a) said first conduit member includes a first bend between said first and second end portions; and

,

(b) said end conduit member includes a second bend between said first and second end portions.

3. A system according to claim 2 wherein:

(a) said central conduit arrangement includes at least one bend between said first and second end portions.

4. A system according to claim 3 wherein:

(a) said central conduit arrangement comprises a second, unitary, conduit member;

including a third bend therein.

5. A system according to claim 4 wherein each of said first, second and third bends is a right angle bend.

6. A conduit system for providing air flow communication between an air filter assembly and an air intake manifold;

said conduit system comprising;

(a) a substantially rigid first conduit member having;

inner and outer surfaces;

first and second opposite ends; and

, first and second opposite end portions separated by a first bend,

(i) said first conduit member first end portion being constructed and arranged for air flow communication with an exit port on the air filter assembly;

(ii) said first conduit member second end portion comprising a narrow end portion with a plurality of spaced annular ribs thereon, each of said ribs having a sharply defined central ridge;

(iii) said first conduit member second end portion having a first, central, longitudinal axis and each of said ribs on said first conduit member second end portion extending in a plane substantially perpendicular to said first longitudinal axis;

(iv) said ribs on said first conduit member each having a forward side and a rearward side defining one of said central ridges therebetween;

said first conduit member rib forward sides generally each facing toward said first conduit member first end portion and each projecting outwardly from said first conduit member outer surface at a first obtuse angle with respect to said first longitudinal axis, and said first conduit member rearward sides each facing generally oppositely from said forward facing sides and projecting outwardly from said first conduit member outer surface at a second obtuse angle with respect to said first longitudinal axis;

(b) a substantially rigid second conduit member having;

inner and outer surfaces;

first and second opposite ends; and

, first and second opposite end portions separated by a second bend;

(i) said second conduit member first end portion being a broad end portion constructed and arranged for receipt of said first conduit member second end portion therein, through said second conduit member first end;

(ii) said second conduit member second end portion comprising a narrow end portion with a plurality of spaced annular ribs thereon, each of said ribs having a sharply defined central ridge;

(iii) said second conduit member second end portion having a second, central, longitudinal axis and each of said ribs on said second conduit member second end portion extending in a plane substantially perpendicular to said second longitudinal axis;

(iv) said ribs on said second conduit member each having a forward side and a rearward side defining one of said central ridges therebetween;

said second conduit member rib forward sides generally each facing toward said second conduit member first end portion and each projecting outwardly from said second conduit member outer surface at a third obtuse angle with respect to said second longitudinal axis;

said second conduit member rearward sides each facing generally oppositely from said forward facing sides and projecting outwardly from said second conduit member outer surface at a fourth obtuse angle with respect to said second longitudinal axis;

(c) a substantially rigid third conduit member having;

inner and outer surfaces;

first and second opposite conduit ends; and

, first and second opposite end portions separated by a third bend;

(i) said third conduit member first end portion being a broad end portion constructed and arranged for receipt of said second conduit member second end portion therein, through said third conduit member first end;

(ii) said third conduit member second end portion being constructed and arranged for air flow communication with an inlet port on the air intake manifold;

(d) a first elastomeric seal member positionable between annular ribs, on said first conduit member second end portion, and said second conduit member first end portion; and

,

(e) a second elastomeric seal member positionable between annular ribs, on said second conduit member second end portion, and said third conduit member first end portion;

(f) whereby sealing engagement between adjacent conduit members is obtainable along engagement between selected ones of said ribs and an associated seal member by means of compression clamps positionable around portions to be sealed.

7. The conduit system according to claim 6 wherein each of said first, second and third bends is about a right angle bend.

8. The conduit system according to claim 6 including:

(a) a first elastomeric collar member having an exterior flange and an interior flange separated by a mounting groove;

said elastomeric collar member being constructed and arranged for mounting on said second conduit member first end portion;

with said interior flange member projecting inwardly of said second conduit member first end and along said second conduit member inner surface; and

, with said exterior flange member extending along said second conduit member outer surface; and

(b) a second elastomeric collar member having an exterior flange and an interior flange separated by a mounting groove;

said elastomeric collar member being constructed and arranged for mounting on said third conduit member first end portion;

with said interior flange member projecting inwardly of said third conduit member first end and along said third conduit member inner surface; and

, with said exterior flange member extending along said third conduit member outer surface.

9. The conduit system according to claim 8 wherein:

(a) said second conduit member first end portion has an exterior annular bead thereon;

said exterior bead being operationally positioned beneath said first elastomeric collar exterior flange; and

,

(b) said third conduit member first end portion has an exterior annular bead thereon;

said exterior bead being operationally positioned beneath said second elastomeric collar member exterior flange.

10. The conduit system according to claim 8 wherein:

(a) said first elastomeric collar member interior flange tapers downwardly in thickness as it extends inwardly of said second conduit member; and

,

(b) said second elastomeric collar member interior flange tapers downwardly in thickness as it extends inwardly of said third conduit member.

11. The conduit system according to claim 6 wherein:

(a) said second obtuse angle is greater than said first obtuse angle; and

(b) said fourth obtuse angle is greater than said third obtuse angle.

12. The conduit system according to claim 11 wherein:

(a) said first obtuse angle is between 95° and

115°

;

(b) said second obtuse angle is between about 120° and

about 130°

;

(c) said third obtuse angle is between about 95° and

about 115°

; and

,

(d) said fourth obtuse angle is between about 120° and

about 130°

.

13. The conduit system according to claim 6 wherein:

(a) each of said ribs on said first conduit member is spaced between 1/8 inch and 1/2 inch from a next adjacent rib; and

(b) each of said ribs on said second conduit member is spaced between 1/8 and 1/2 inch from a next adjacent rib.

14. The conduit system according to claim 13 wherein:

(a) each rib on said first conduit member projects outwardly between 0.07 and 0.11 inches from said first conduit member; and

,

(b) each rib on said second conduit member projects outwardly between 0.07 and 0.11 inches from said second conduit member.

15. A conduit system for providing air flow communication between an air filter assembly and an air intake manifold;

said conduit system comprising;

(a) a substantially rigid first conduit member having;

inner and outer surfaces;

first and second opposite ends; and

, first and second opposite end portions separated by a first bend;

(i) said first conduit member first end portion being constructed and arranged for air flow communication with an exit port on the air filter assembly;

(ii) said first conduit member second end portion comprising a narrow end portion with a plurality of spaced annular ribs thereon, each of said ribs having a sharply defined central ridge;

(iii) said first conduit member second end portion having a first, central, longitudinal axis; and

, each of said ribs on said first conduit member second end portion extending in a plane substantially perpendicular to said first longitudinal axis;

(iv) said ribs on said first conduit member each having a forward side and a rearward side defining one of said central ridges therebetween;

said first conduit member rib forward sides generally each facing toward said first conduit member first end portion and each projecting outwardly from said first conduit member outer surface at a first obtuse angle with respect to said first longitudinal axis; and

, said first conduit member rearward sides each facing generally oppositely from said forward facing sides and projecting outwardly from said first conduit member outer surface at a second obtuse angle with respect to said first longitudinal axis;

(b) a substantially rigid second conduit member having;

an inner and outer surface, first and second opposite ends; and

, first and second opposite end portions separated by a second bend;

(i) said second conduit member first end portion being a broad end portion constructed and arranged for receipt of said first conduit member second end portion therein, through said second conduit member first end;

(ii) said second conduit member second end portion comprising a narrow end portion with a plurality of spaced annular ribs thereon, each of said rib having a sharply defined central ridge;

(iii) said second conduit member second end portion having a second, central, longitudinal axis;

(iv) said ribs on said second conduit member each having a forward side and a rearward side defining one of said central ridges therebetween;

said second conduit member rib forward sides generally each facing toward said second conduit member first end portion and each projecting outwardly from said second conduit member outer surface at a third obtuse angle with respect to said second longitudinal axis;

said second conduit member rearward sides each facing generally oppositely from said forward facing sides and projecting outwardly from said second conduit member outer surface at a fourth obtuse angle with respect to said second longitudinal axis;

(c) a substantially rigid third member having;

inner and outer surfaces;

first and second opposite conduit ends; and

, first and second opposite end portions separated by a third bend;

(i) said third conduit member first end portion being a broad end portion constructed and arranged for receipt of said second conduit member second end portion therein, through said third conduit member first end; and

,

(ii) said second conduit member second end portion comprising a narrow end portion with a plurality of spaced annular ribs thereon, each of said ribs having a sharply defined central ridge.

16. The conduit system according to claim 15 wherein:

(a) said second obtuse angle is greater than said first obtuse angle; and

,

(b) said fourth obtuse angle is greater than said third obtus angle.

17. The conduit system according to claim 16 wherein:

(a) said first obtuse angle is between 95° and

115°

;

(b) said second obtuse angle is between about 120° and

about 130°

;

(c) said third obtuse angle is between about 95° and

about 115°

; and

,

(d) said fourth obtuse angle is between about 120° and

about 130°

.

18. The conduit system according to claim 15 wherein:

(a) each of said ribs on said first conduit member is spaced between 0.125 inch and 0.5 from a next adjacent rib; and

,

(b) each of said ribs on said second conduit member is spaced between 0.125 and 0.5 inch from a next adjacent rib.

19. The conduit according to claim 18 wherein:

(a) each rib on said first conduit member projects outwardly between 0.07 and 0.11 inches from said first conduit member; and

,

(b) each rib on said second conduit member projects outwardly between 0.07 and 0.11 inches from said second conduit member.

20. A system according to claim 15 including:

(a) a first elastomeric seal member positionable between annular ribs on said first conduit member second end portion, and said second conduit member first end portion; and

,

(b) a second elastomeric seal member positionable between annular ribs, on said second conduit member second end portion, and said third conduit member first end portion;

(c) whereby sealing engagement between adjacent conduit members is obtainable along engagement between selected ones of said ribs and an associated seal member by means of compression clamps positionable around portions to be sealed.