The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 1993
Filed:
Jan. 21, 1992
John A Catanese, Seward, PA (US);
Michael A McClarren, New Alexandria, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
An automatic stop apparatus for use in combination with a cold-pilger mill to reduce the amount of tube scrap generated during a cold-pilgering operation includes a first control scheme for stopping the advancement of the pilger mill feed carriage and the operation of the mill's upper and lower pilger dies when the feed carriage pushing a tube through the pilger dies is a predetermined distance from the axis extending between the centers of the pair of pilger dies. The predetermined distance is selected to provide that facing end portions of the pushed and pusher tubes are positioned between the pilger dies. A second control scheme stops the retraction of the feed carriage after the feed carriage has moved the same predetermined distance measured from the trailing end of the pusher tube towards the inlet end of the pilger mill so that the next pusher tube provides that the upper and lower pilger dies are again stopped when the facing end portions of the succeeding pushed and pusher tubes are also between the pilger dies.