Mark L Zauhar

US Patent:

7107811, Sep 19, 2006

Filed:

Oct 14, 2005

Appl. No.:

11/251395

Inventors:

Mark L. Zauhar - Lakeville MN, US

International Classification:

B21D 22/00

US Classification:

72349, 72467, 724668

Abstract:

A tool pack assembly for use in the manufacture of two piece metal can bodies. The tool pack assembly of the present invention is constructed and arranged for use in a body maker assembly to form parts of metal cans. The tool pack assembly of the invention includes an improved die module structure. The improved die module includes compressible dampening structures to thereby float a die element to center and align the metal body with the die element.

US Patent:

7290428, Nov 6, 2007

Filed:

Feb 2, 2006

Appl. No.:

11/346132

Inventors:

Mark L. Zauhar - Lakeville MN, US

International Classification:

B21D 22/00

US Classification:

72348, 7245313

Abstract:

A can bottom forming assembly for use in forming the bottom of metal cans, such as steel and aluminum two piece cans. The bottom forming assembly is lightweight and comprises outer and cylinder housing assemblies which house a clamp ring retainer assembly, a transfer piston assembly and a spring member. The clamp ring retainer assembly includes biasing members to float a clamp ring thereby centering the clamp ring and domer die plug with respect to the ram of a bodymaker.

US Patent:

7526937, May 5, 2009

Filed:

Sep 28, 2007

Appl. No.:

11/904861

Inventors:

Mark L. Zauhar - Lakeville MN, US

International Classification:

B21D 22/00

US Classification:

72347, 724667, 413 69

Abstract:

A can bottom forming assembly for use in forming the bottom of metal cans, such as steel and aluminum two piece cans. The bottom forming assembly is lightweight, compact and comprises outer and cylinder housing assemblies which house a clamp ring retainer assembly, a transfer piston assembly and an annular spring member. The clamp ring retainer assembly includes biasing members to float a clamp ring thereby centering the clamp ring and domer die plug with respect to the ram of a bodymaker. Increased piston size, spring position and size are provided to permit increased clamp ring pressure.

US Patent:

20020170334, Nov 21, 2002

Filed:

May 15, 2001

Appl. No.:

09/858242

Inventors:

Mark Zauhar - Lakeville MN, US

International Classification:

B21D022/21

US Classification:

072/348000

Abstract:

An improved double action bottom former for forming and shaping a metal can blank includes an integral cylinder housing having sidewalls forming first and second axial chambers, wherein the second axial chamber houses a piston suspension assembly for resilient positioning of a clamp ring and the first axial chamber houses a dome plug, which is resiliently positioned through use of a donut spring. In addition to serving means to bias the dome plug, the donut spring includes an interior cylindrical space defining a third axial chamber to increase the volumetric capacity of the second axial chamber for added capability in controlling the resilient positioning of the clamp ring to permit high cyclic operation of the bottom former for a sustained period of time without deleterious impact on other operating components comprising bodymaking equipment.