Conveyor assembly with compressible layer

• US 6,062,379 A
• Filed: 04/30/1998
• Issued: 05/16/2000
• Est. Priority Date: 04/30/1998
• Status: Expired due to Term

• Current Assignee: Fenner Incorporated (Compagnie Generale DES Etablissements Michelin SCA)
• Original Assignee: Fenner Incorporated (Compagnie Generale DES Etablissements Michelin SCA)
• Inventors: Trafford, Susan I., Turek, Michael H., Marshall, Howard E., Seymour, Shaun A. II, Geib, Randall R.
• Primary Examiner(s): Ellis, Christopher P.
• Assistant Examiner(s): DILLON JR, JOSEPH A
• Application Number:
  US09/070,093
• Time in Patent Office: 747 Days
• Field of Search: 198/844.1, 198/846, 198/847, 198/850, 198/690.2
• US Class Current: 198/844.1
• CPC Class Codes: B65G 17/38 Chains or like traction elements drive chains F16G13/00; Connections between traction elements and load-carriers
• CPC Class Codes: B65G 2201/02 Articles

Abstract

A conveyor assembly comprising a series of belt links arranged in superimposed successive overlapping relation secured together by interlocking belt link fasteners and apertures, combined with a compressible layer to reduce the noise produced when material is placed on the conveyor assembly. The compressible layer is formed of a plurality of cushioning links that interlock with the links of the belt forming a surface which contacts the materials being conveyed.

Claims

1. A conveyor assembly for transporting materials on the top side of the assembly comprising:

an interlocking link belt comprising a series of belt links arranged in superimposed successive overlapping relation, said belt having a thickness between its top and bottom sides corresponding to the thickness of at least two belt links, each of said belt links having;

a body portion with a lateral width, a longitudinal length, at least one aperture, and an integral fastener at the leading end of said body portion and longitudinally-aligned with said aperture, said fastener comprising;

a laterally constricted fastener neck portion; and

a fastening tab connected to said body portion through said neck portion;

said belt links of said series being secured together in overlapping relation to form a belt by the neck of said fastener extending from one of said sides of the belt through said aperture in the preceding belt link, said fastening tab engaging the other of said sides of said belt at the preceding belt link to secure the belt links together; and

a shock absorbing layer connected to the upper surface of the link belt, operable to resiliently deform to absorb the impact of material when material is placed on the top side of the conveyor assembly comprising a series of cushioning members each having a cushion body portion having a length positioned on the top side of the belt and an integral connector with a laterally constricted connector neck portion and a connecting tab connected to said cushion body portion through said connector neck portion;

said cushioning members being connected to said belt links by said connector neck extending through an aperture in at least one of said belt links, whereby said connecting tab is engaged on the other side of said belt,

the length of said body portion being bowed outwardly from the top side of the belt to form a compressible pocket for cushioning and shock absorption.

2. A conveyor assembly according to claim 1 wherein each belt link has an associated cushioning member having an aperture, the cushioning members being connected to the belt links by the connector of each cushioning member extending through the cushioning aperture associated with the preceding cushioning member and a link aperture in at least one of the belt links.

3. A conveyor assembly according to claim 1 wherein the tensile strength of the belt links is higher than the tensile strength of the cushioning members.

4. A conveyor assembly according to claim 1, wherein the cushioning members are made of thermoplastic urethane.

5. A conveyor assembly having an interlocking link belt, comprising:

a plurality of interconnected belt links arranged in overlapping relation forming a belt having an upper surface;

a plurality of fasteners connecting adjacent belt links; and

a noise reduction layer connected to the link belt operable to dampen the audible noise produced by material impacting the belt, comprising a plurality of noise reduction elements each having at least one end connected to the belt and having a portion overlapping the upper surface of the belt and bowed outwardly therefrom forming a noise-reducing pocket between said bowed out portion and said upper surface.

6. A conveyor assembly according to claim 5 comprising a plurality of noise reduction fasteners operable to interlock the noise reduction elements with the belt links.

7. A conveyor assembly according to claim 6 wherein each of the noise reduction elements includes an aperture and one of said plurality of noise reduction fasteners, each belt link includes an aperture, and said noise reduction fastener of each element extends through the aperture of an associated belt link and the aperture of the preceding noise reduction element to fasten each noise reduction element to the corresponding belt link and the preceding noise reduction element.

8. A conveyor assembly according to claim 5 wherein the plurality of noise reduction elements are connected in series in overlapping relation overlying the belt links.

9. A conveyor assembly according to claim 8 wherein said bowed out body portion has an upper surface with a coefficient of friction higher than the coefficient of friction of the upper surface of the belt links.

10. A conveyor assembly according to claim 8 wherein the tensile strength of the belt links is higher than the tensile strength of the noise reduction elements.

11. A conveyor assembly according to claim 8 wherein the noise reduction elements are made of thermoplastic urethane.

12. A conveyor assembly according to claim 8 wherein each belt link is connected to a corresponding noise reduction element in the series so that the number of noise reduction elements is substantially the same as the number of belt links.

13. A conveyor assembly according to claim 8 wherein the bowed out body portion of the noise reduction elements are spaced above the upper surface of the belt, forming a series of compressible hollow pockets.

14. A conveyor assembly according to claim 13 wherein the belt links comprise a body portion having a thickness and the bowed out body portion of the hollow pockets have a maximum spacing from the upper surface of the belt more than twice the thickness of the belt link portion.

15. A conveyor assembly for conveying material, comprising:

a belt having a continuous length with an upper surface; and

a plurality of flexible elements having a body portion with a length having leading and trailing ends, and extending along the continuous length of the belt between said leading and trailing ends, said ends being connected to the belt at points which are longitudinally spaced by a distance less than the length of the body portion, causing the body portion to flex and bow outwardly, forming a series of resiliently compressible pockets outwardly of the upper surface of the belt to dampen audible noise.

16. A conveyor assembly according to claim 15 wherein the plurality of elements are connected in series in overlapping relation overlying the belt.

17. A conveyor assembly according to claim 15 comprising a plurality f fasteners operable to connect the plurality of elements with the belt, each body portion having a one of said fasteners at one of the leading and trailing ends, and a receptacle at the other of the leading and trailing ends to receive the fastener of an adjacent body portion in said series.

18. The conveyor assembly of claim 15 wherein the coefficient of friction of the upper surface of the plurality of elements is higher than the coefficient of friction of the upper surface of the belt.

19. The conveyor assembly of claim 15 wherein the tensile strength of the belt is higher than the tensile strength of the plurality of elements.

20. The conveyor assembly of claim 15 wherein the plurality of elements are made of thermoplastic urethane.

21. The conveyor assembly of claim 15 wherein the belt is made of a material having a thickness and the thickness of the pocket formed between the bowed body portion and the belt upper surface is at least twice the belt material thickness.