Method of making a steel cable reinforced conveyor belt

Details Method of making a steel cable reinforced conveyor belt Method of making a steel cable reinforced conveyor belt

2000-06-01

2002-12-03

Echols, P. W. (Department: 3726)

Metal working

Method of mechanical manufacture

With testing or indicating

C264S401000, C264S229000, C156S064000, C156S137000, C156S161000, C156S179000, C073S862410

Reexamination Certificate

active

06487764

ABSTRACT:

BACKGROUND
When making steel cable reinforced conveyor belts, it is desirable to maintain the tensions on each cable at a predetermined level. This invention provides a method of making a steel cable reinforced conveyor belt while monitoring the tension of each of the cables going into the construction.
Methods and apparatuses for measuring the tension in wires and cables have been known for some time. Most are based on determining the natural frequency of vibration of a known length of cable between two fixed points and calculating the tension according to the following formula:
T=
4
L
2
F
2
M
where T is tension, L is the length between the two fixed points, F is the natural frequency of vibration and M is the mass per unit of length of the cable. See e.g. U.S. Pat. Nos. 3,871,217; 3,540,271; 3,394,587; 2,618,970 and 3,889,525.


REFERENCES:
patent: 3394587 (1968-07-01), Freeman
patent: 3862559 (1975-01-01), Richter et al.
patent: 3871217 (1975-03-01), Miley
patent: 4570118 (1986-02-01), Tomczak et al.
patent: 20 55 456 (1972-05-01), None
patent: 0 785 420 (1997-07-01), None

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