Conveyor with hinge pin retention plug with snap fit

• US 5,960,937 A
• Filed: 10/27/1997
• Issued: 10/05/1999
• Est. Priority Date: 10/27/1997
• Status: Expired due to Term

• Current Assignee: Rexnord Corporation
• Original Assignee: Rexnord Corporation
• Inventors: Koeferl, Paul, Stebnicki, James C.
• Primary Examiner(s): Terrell, William E.
• Assistant Examiner(s): Bower, Kenneth W.
• Application Number:
  US08/958,115
• Time in Patent Office: 708 Days
• Field of Search: 198/853, 198/852, 198/851, 998/851, 998/852, 998/853
• US Class Current: 198/851
• CPC Class Codes: B65G 17/08 the surface being formed by the traction element
• CPC Class Codes: B65G 2201/02 Articles
• CPC Class Codes: B65G 2207/12 Chain pin retainers

Abstract

Disclosed herein is a conveyor having an intended direction of travel and comprising a link module extending transversely of the intended direction of conveyor travel and comprising a plurality of ears including a laterally located outer side ear having a bore extending transversely of the direction of intended conveyor travel, and a pair of gripping surfaces extending in spaced parallel relation to each other to define a gripping portion extending along the direction of intended conveyor travel, and a plug fabricated of resilient material and including a cylindrical barrel portion extending in said bore, and spaced surfaces extending parallel to and inwardly of said outer side surface to define a notch resiliently engaging said gripping portion of said outer side ear.

Claims

1. A conveyor having an intended direction of travel comprising:

a first link module extending transversely of the intended direction of conveyor travel and including a trailing portion, said trailing portion including a plurality of spaced apart ears defining therebetween a first series of spaces;

a second link module extending transversely of the intended direction of conveyor travel, said second link module including a leading portion including a plurality of spaced apart ears located in said spaces defined by said plurality of ears of said trailing portion of said first link module, wherein one of said leading and trailing plurality of ears includes a laterally located outer side ear having an outer side surface extending along the direction of intended conveyor travel, said outer side ear includes a bore extending from said outer side surface transversely of the direction of intended conveyor travel;

a retention plug including a cylindrical barrel portion extending in said bore, said retention plug including an outer end and inter-engaging surfaces, said inter-engaging surfaces releasably preventing outward withdrawal of said retention plug from said bore; and

wherein said outer side surface includes an elongated recess extending from said bore in the direction of intended conveyor travel and said retention plug includes a flange portion extending from said outer end of said barrel portion in said elongated recess.

2. A conveyor in accordance with claim 1 wherein said leading and trailing pluralities of ears respectively include bores in axial alignment with said bore in said end ear, and wherein said barrel portion extends in a plurality of said bores of said leading and trailing pluralities of ears.

3. A conveyor in accordance with claim 1 wherein said first and second link modules are fabricated from plastic.

4. A conveyor in accordance with claim 1 wherein said plug is fabricated from plastic.

5. A conveyor in accordance with claim 1 wherein said first and second link modules and said plug are fabricated from plastic.

6. A conveyor having an intended direction of travel comprising:

a link module extending transversely of the intended direction of conveyor travel, said link module including a plurality of ears, wherein one of said plurality of ears is a laterally located outer side ear having an outer side surface, said outer side ear including a bore extending from said outer side surface transversely of the direction of intended conveyor travel and a first gripping surface in communication with said bore, said first gripping surface extends along the direction of intended conveyor travel, wherein said outer side ear also includes a second gripping surface in spaced parallel relation to said first gripping surface, said second gripping surface is positioned along the same direction of intended conveyor travel as said first gripping surface; and

a retention plug fabricated of resilient material, said retention plug including a cylindrical barrel portion extending in said bore, wherein said retention plug also includes a pair of spaced surfaces engaging said first gripping surface and said second gripping surface.

7. A conveyor having an intended direction of travel comprising:

a first link module extending transversely of the intended direction of conveyor travel and including a trailing portion, said trailing portion including a plurality of ears spaced apart at distances to define therebetween a first series of spaces;

a second link module extending transversely of the intended direction of conveyor travel, said second link module including a leading portion having a plurality of ears spaced apart at distances to define therebetween a second series of spaces, said plurality of ears on said second link module are located in said spaces defined by said plurality of ears of said trailing portion of said first link module, wherein one of said leading and trailing plurality of ears includes a laterally located outer side ear having an outer side surface extending along the direction of intended conveyor travel, said outer side ear includes a bore extending from said outer side surface transversely of the direction of intended conveyor travel and an elongated recess located in said outer side surface and extending radially from said bore along the direction of intended conveyor travel, said outer side ear also includes an aperture extending in said outer side ear transversely to said bore, said aperture communicates with said bore and is defined, in part, by an abutment surface spaced inwardly from said outer side surface, said abutment surface extends along the direction of intended conveyor travel;

a retention plug including a cylindrical barrel portion extending in said bore, said retention plug includes an outer end and a flange portion extending from said outer end, said flange portion is located in said elongated recess; and

wherein said retention plug also includes a resilient tab portion extending radially from said barrel portion in inwardly spaced relation from of said flange portion, said resilient tab portion is in engagement with said abutment surface of said outer side ear.

8. A conveyor in accordance with claim 7 wherein said leading and trailing pluralities of ears respectively include bores in axial alignment with said bore in said end ear, and wherein said barrel portion extends in a plurality of said bores of said leading and trailing pluralities of ears.

9. A conveyor in accordance with claim 7 wherein said first and second link modules are fabricated from plastic.

10. A conveyor in accordance with claim 7 wherein said plug is fabricated from plastic.

11. A conveyor in accordance with claim 7 wherein said first and second link modules and said plug are fabricated from plastic.

12. A conveyor in accordance with claim 7 wherein said flange portion includes an outer end which is manipulatable to facilitate removal of said retention plug from said link module.

13. A conveyor having an intended direction of travel comprising:

a first link module extending transversely of the intended direction of conveyor travel and including a trailing portion, said trailing portion including a plurality of ears spaced apart at distances to define therebetween a first series of spaces;

a second link module extending transversely of the intended direction of conveyor travel, said second link module including a leading portion including a plurality of ears spaced apart at distances to define therebetween a second series of spaces, said plurality of ears on said second link module are located in said spaces defined by said plurality of ears of said trailing portion of said first link module, wherein one of said leading and trailing plurality of ears includes a laterally located outer side ear having an outer side surface extending along the direction of intended conveyor travel, said outer side car includes a bore extending from said outer side surface transversely of the direction of intended conveyor travel and an elongated recess located in said outer side surface, said elongated recess extends radially from said bore along the direction of intended conveyor travel and is defined, in part, by a recessed surface extending radially from said bore parallel to said outer side surface, said recessed surface includes an end spaced from said bore, wherein said outer side ear also includes an edge surface extending from said end of said recessed surface parallel to said bore and a gripping surface extending parallel to said recessed surface from said edge surface to define with said recessed surface and said edge surface a gripping portion; and

a retention plug including a cylindrical barrel portion extending in said bore, said retention plug includes an outer end and a flange portion extending from said outer end, said flange portion is located in said elongated recess and includes an arm portion extending inwardly from said flange portion in parallel relation to said barrel portion, wherein said retention plug also includes an outer enlarged portion projecting toward said barrel portion such that said flange portion, said arm portion and said outer enlarged portion form a notch resiliently engaging said gripping portion of said outer side ear.

14. A conveyor in accordance with claim 13 wherein said leading and trailing pluralities of ears respectively include bores in axial alignment with said bore in said end ear, and wherein said barrel portion extends in a plurality of said bores of said leading and trailing pluralities of ears.

15. A conveyor in accordance with claim 13 wherein said first and second link modules are fabricated from plastic.

16. A conveyor in accordance with claim 13 wherein said plug is fabricated from plastic.

17. A conveyor in accordance with claim 13 wherein said first and second link modules and said plug are fabricated from plastic.

18. A conveyor in accordance with claim 13 wherein said flange portion includes an outer end which is manipulatable to facilitate removal of said retention plug from said link module.

19. A conveyor having an intended direction of travel comprising:

a first link module extending transversely of the intended direction of conveyor travel and including a trailing portion, said trailing portion including a plurality of ears spaced apart at distances to define therebetween a first series of spaces;

a second link module extending transversely of the intended direction of conveyor travel, said second link module including a leading portion including a plurality of ears spaced apart at distances to define therebetween a second series of spaces, said plurality of ears on said second module are located in said spaces defined by said plurality of ears of said trailing portion of said first link module, wherein one of said leading and trailing plurality of ears includes a laterally located outer side ear having an outer side surface extending along the direction of intended conveyor travel, said outer side ear includes a bore extending from said outer side surface transversely of the direction of intended conveyor travel and an elongated recess located in said outer side surface, said elongated recess extends radially from said bore along the direction of intended conveyor travel and is defined, in part, by a recessed surface extending radially from said bore parallel to said outer side surface, said elongated recess includes an end spaced from said bore, said outer side ear also includes an edge surface extending from said end of said recessed surface parallel to said bore and a first gripping surface extending parallel to said recessed surface from said edge surface to define with said recessed surface and said edge surface a gripping portion, wherein said outer side ear also includes an aperture extending in said outer side ear transversely to said bore, said aperture communicates with said bore and is defined, in part, by a second gripping surface spaced inwardly from, and parallel to, said outer side surface to define with said recessed surface a second gripping portion; and

a retention plug including a cylindrical barrel portion extending in said bore, said retention plug includes an outer end and a flange portion extending from said outer end, said flange portion is located in said elongated recess and includes an outer end spaced from said barrel portion, said retention plug also includes an arm portion extending inwardly from said outer end of said flange portion in parallel relation to said barrel portion, wherein said retention plug also includes an outer enlarged portion projecting toward said barrel portion said outer enlarged portion defining with said flange portion and said arm portion a first notch, said first notch resiliently engaging said first gripping portion of said outer side ear, wherein said retention plug also includes a tab portion extending radially from said barrel portion, said tab portion is in inwardly spaced relation from said flange portion, said tab portion defining with said flange portion and said cylindrical barrel portion a second notch, said second notch resiliently engaging said second gripping portion of said outer ear.

20. A conveyor in accordance with claim 19 wherein said tab portion includes a side surface facing said arm portion and normally extending in inclined relation to said flange portion, wherein said enlarged portion includes a side surface facing said barrel portion and normally extending in inclined relation to said flange portion, and wherein said side surfaces of said tab portion and said enlarged portion extend in outwardly divergent relation from said flange portion.

21. A conveyor in accordance with claim 19 wherein said leading and trailing pluralities of ears respectively include bores in axial alignment with said bore in said end ear, and wherein said barrel portion extends in a plurality of said bores of said leading and trailing pluralities of ears.

22. A conveyor in accordance with claim 19 wherein said first and second link modules and said plug are fabricated from plastic.

23. A conveyor in accordance with claim 19 wherein said flange portion includes an outer end which is manipulatable to facilitate removal of said retention plug from said link module.