IP Library Granted Patent US 8,978,877
Granted Patent B2
US 8,978,877 · App. 13/220,048 · Granted Mar 17, 2015

Sound dampening conveyor chain flight

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Quick Facts
Patent No.
US 8,978,877
App. No.
13/220,048
Granted
Mar 17, 2015
Kind
B2
Abstract

A conveyor flight for a chain comprising at least two spaced apart links, and two side plates that connect the links, with each side plate including two spaced apart extension pins extending from the side plate. The flight comprises a metal support, and the metal support includes two spaced apart cylindrical portions adapted to receive the two spaced apart extension pins. The flight also includes a flexible casing surrounding the metal support.

Claims (12)

1. A chain flight assembly of a conveyor chain, the assembly comprising:

a pair of parallel flight pins spaced apart by a distance, each pin having an outer surface and a length;

a pair of spaced apart, parallel side plates mounted on the pins;

at least one flight including a pair of openings spaced apart by the distance, each opening having an inner surface and receiving an associated pin; and

adhesive between the inner surface of each opening and the outer surface of the associated pin to connect the at least one flight to the pins,

wherein the at least one flight includes

a flight core including an arm and a pair of parallel tubes spaced apart by the distance, the arm being between and coupled to each tube, each tube having a first end and a second end, each tube defining one of the pair of openings, the adhesive being between the inner surface of each tube and the outer surface of the associated pin, and

a flight coating encapsulating and secured to the flight core, the coating including a first end and a second end, the first end including a pair of openings,

the flight core and the flight coating forming a unitary flight, the unitary flight being connectable to the pins, the first end of each tube receiving a portion of the length of an associated pin, each opening in the flight coating receiving therethrough a portion of the associated pin.

2. The assembly of claim 1 , wherein the flight is formed of ductile iron.

3. The assembly of claim 1 , wherein the flight is removably connectable to the pins.

4. The assembly of claim 3 , wherein the adhesive is melted to remove the flight from the pins.

Assignments (2)
MERGER Recorded Sep 17, 2018
From: JOY MM DELAWARE, INC.
To: JOY GLOBAL UNDERGROUND MINING LLC
Reel/Frame 047096/0399 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 29, 2011
From: O'NEILL, MICHAEL L.
To: JOY MM DELAWARE, INC.
Reel/Frame 026823/0361 →