U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Apparatus for straightening and orientating projections or nipples of anodes

Patent 5471860 Issued on December 5, 1995. Estimated Expiration Date: Icon_subject May 3, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3696656

Apparatus for straightening electrode rods
Patent #: 4667501
Issued on: 05/26/1987
Inventor: Martin

Apparatus for straightening cast anodes
Patent #: 4903519
Issued on: 02/27/1990
Inventor: Hukkanen, et al.

Method for straightening cast anodes
Patent #: 4903520
Issued on: 02/27/1990
Inventor: Hukkanen, et al.

5117672

Inventors

Assignee

Application

No. 237606 filed on 05/03/1994

US Classes:

72/316, Clamp structure constitutes sole initial metal-deforming force-reaction means (i.e., is passive tool)72/293BY USE OF NON-DEFORMING WORK-GRIPPING CLAMP AND RELATIVELY MOVABLE CLAMP, TOOL OR WORK-FORCER

Examiners

Primary: Crane, Daniel C.

Attorney, Agent or Firm

International Class

B21D 003/16

Foreign Application Priority Data

1993-05-12 DE

Abstract

Apparatus for straightening and orientating the deformed nipples of an anode employs framework through which each anode suspended by its anode rod is passed. A hollow casing with openings for receiving the nipples is raised relative to the framework to locate the nipples in the openings. A yoke of the anode is supported by pressure-pieces driven by self-locking spindle drives to engage the yoke from the outside and by support members engaging the yoke from the underside. The casing carries mechanisms each composed of piston and cylinder units with the piston rods and cylinders interconnected by yokes. One of these yokes has recesses for applying force to a central nipple and the other of these yokes carries a force-applying element with a socket for receiving the outermost nipples. The yokes and force applying elements are guided within the casing and serve to bend the nipples back into the desired orientation. Stops serve to control and limit the displacement of the piston and cylinder units.

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