Connector system for air transfer ducts

• US 5,129,685 A
• Filed: 02/23/1990
• Issued: 07/14/1992
• Est. Priority Date: 04/27/1988
• Status: Expired due to Fees

• Current Assignee: Donaldson Company Incorporated
• Original Assignee: Donaldson Company Incorporated
• Inventors: Engel, Donald F.
• Primary Examiner(s): Arola, Dave W.
• Application Number:
  US07/484,161
• Time in Patent Office: 872 Days
• Field of Search: 285/231, 285/232, 285/332.2, 285/332.3, 285/351, 285/424, 285/181
• US Class Current: 285/231
• 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

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 substantially rigid straight conduit members joined in fluid communication by connector systems having elbow-shaped conduit members. A narrow end of a conduit member is received within a broad end of a next adjacent conduit member. Sealing engagement occurs via an elastomeric seal member having ribs thereon positioned radially between the inner and outer conduits. A preferred rib arrangement is provided, to insure a flexible, multi-point, seal system.

Claims

1. A conduit system for providing air flow;

said conduit system comprising;

(a) a substantially rigid first tubular member having;

an inner surface defining an internal passageway;

an outer surface; and

, a connector end portion with an end face;

(b) a substantially rigid second tubular member having a connector end portion with an internal surface and an outer end;

said second tubular member connector end portion being sized for receipt of said first tubular member connector end portion therein, and through said outer end, during use;

(i) said second tubular member connector end portion including an inner, annular shoulder therein;

said shoulder having a face directed toward said substantially rigid second tubular member connector end portion outer end;

(c) an elastomeric collar positionable between said first tubular member connector end portion and said second tubular member connector end portion;

(i) said elastomeric collar having a longitudinal bore extending therethrough, sized for receipt of said first tubular member connector end portion therein, during use;

(ii) said elastomeric collar including an annular shoulder thereon, constructed and arranged to receive said connector end portion end face abutted thereagainst during use;

(iii) said elastomeric collar having an outer surface with annular ribs thereon, oriented for direction against said second tubular member connector end portion, during use;

(iv) said elastomeric collar having an end portion constructed and arranged to abut said face of said second tubular member connector end portion inner, annular shoulder, during use; and

(d) means for applying radial pressure against said second tubular member connector end portion, directed toward said elastomeric collar and said first tubular member outer surface, for generation of a seal therebetween.

2. A conduit system according to claim 1 wherein:

(a) said second tubular member connector end portion has a cross-sectional dimension which increases, progressively from said inner, annular shoulder to said outer end.

3. A conduit system according to claim 1 wherein:

(a) said first tubular member connector end portion includes an outer, annular bead thereon.

4. A conduit system according to claim 1 wherein said means for applying radial pressure comprises a hose clamp.