Method of controlling the speed of a laying head in a...

Details Method of controlling the speed of a laying head in a... Method of controlling the speed of a laying head in a...

2011-04-05

2011-04-05

Ekiert, Teresa M (Department: 3725)

Metal deforming

Coiling by work-guide member orbiting about longitudinal...

C072S010300, C072S135000, C242S361000

Reexamination Certificate

active

07918119

ABSTRACT:
A method is disclosed for controlling the speed of a curved rotatably driven laying pipe through which a longitudinally moving product is directed to exit from the delivery end of the pipe as a helical formation of rings. The method comprises determining the maximum and minimum internal radii Rmax, Rminof the pipe at the location of the maximum radius R of the pipe as measured from its rotational axis; continuously measuring the velocity Vpof the product entering the laying pipe; and, controlling the rotational speed of the laying pipe such that the rotational velocities Vmax, Vminof the pipe at said maximum and minimum internal radii bracket a range containing the velocity Vpof the product.

REFERENCES:
patent: 4109879 (1978-08-01), Properzi
patent: 5238199 (1993-08-01), Ossoinig et al.
patent: 2006/0217831 (2006-09-01), Butterworth et al.
patent: 3023308 (1981-02-01), None
patent: 57154320 (1982-09-01), None
patent: 61123417 (1986-06-01), None

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