Conveyor belt and a method of making same

• US 20060151303A1
• Filed: 01/12/2005
• Published: 07/13/2006
• Est. Priority Date: 01/12/2005
• Status: Active Grant

• Current Assignee: San-Ai Industries Incorporated
• Original Assignee: San-Ai Industries Incorporated
• Inventors: Motoda, Shuho
• Granted Patent: US 7,140,487 B2
• Time in Patent Office: Days
• US Class Current: 198/844.200
• CPC Class Codes: B65G 15/30 Belts or like endless load-carriers co-operating with rails or the like B65G21/22; co-operating with rollers B65G39/20
• CPC Class Codes: Y10T 24/162 Pintle pin connected belt ends

Abstract

A conveyor belt comprises one or more elongate pieces of material joined together to form an endless belt. The or each joint extends across the belt at an angle non-perpendicular to the direction of intended travel of the belt. Adjoining ends of the belt are connected together by a plurality of generally U-shaped gripping elements. The free ends of each gripping element grip an adjoining end of the belt and the closed ends of the gripping elements protrude beyond the respective adjoining end of the belt. A hinge pin extends through the protruding parts of the gripping elements of each of the adjoining ends of each belt to connect the adjoining ends of the belt together.

Claims

1. A conveyor belt comprising one or more elongate pieces of material joined together to form an endless belt, the or each joint extending across the belt at an angle non-perpendicular to a direction of intended travel of the belt, adjoining ends of the belt being connected together by a plurality of generally U-shaped gripping elements, free ends of each of which grip a respective adjoining end of the belt and which at their closed ends protrude beyond a respective adjoining end of the belt and a hinge pin extending through protruding parts of the gripping elements of each of the adjoining ends of the belt to connect the adjoining ends of the belt together.

2. A conveyor belt as claimed in claim 1, wherein the generally U-shaped gripping elements extend in or substantially in the intended direction of travel of the belt.

3. A conveyor belt as claimed in claim 1, wherein each generally U-shaped gripping element has a claw at each of its free ends for insertion into material of the belt.

4. A conveyor belt as claimed in any one of claims 1, wherein the gripping elements attached to one of the adjoining ends alternate with the gripping elements attached to the other adjoining end across the width of the belt.

5. A conveyor belt as claimed in claim 1, wherein the or each joint extends across the belt at an angle of between 15°

and 60°

to a line extending perpendicularly to the intended direction of travel of the belt.

6. A method of attaching gripping elements of a conveyor belt to an adjoining end of the belt, comprising the steps of:

a. providing an elongate support having an upper web portion and two depending flank portions,

b. hanging the gripping elements in spaced relationship with each element on the flank portions of the support,

c. placing the gripping elements in a compressor with closed ends of the gripping elements supported by the compressor and open ends of the gripping elements between two closable jaws of the compressor,

d. removing the support, and

e. inserting the respective adjoining end of the belt between jaws of the compressor and closing the jaws of the compressor to attach the gripping elements to said adjoining end of the belt.

7. A method as claimed in claim 6, wherein the support holds the gripping elements at an angle to a plane normal to a longitudinal extent of the support so that, when attached to the respective adjoining end of the belt, the gripping elements will, in use, extend in or substantially in a direction of intended travel of the belt.

8. A method as claimed in claim 7, wherein at least one flank portion of the support has a plurality of comb-like teeth for holding the gripping elements at the aforesaid angle to a plane normal to the longitudinal extent of the support.

9. A method as claimed in claim 6, wherein the closed ends of the gripping elements are located in spaced apart slots in a base component of the compressor and are held in place in the slots by an elongate holding member which is inserted through the base component after placing the gripping elements in the compressor and which is removed after step (e) to allow the adjoining end of the belt and the gripping elements to be removed from the compressor.

10. A method as claimed in claim 6, wherein the support is a paper support.