Edward C Maeder

US Patent:

42890144, Sep 15, 1981

Filed:

Oct 11, 1979

Appl. No.:

6/083950

Inventors:

Edward G. Maeder - Minnetonka MN
John M. Tovey - Circle Pines MN

Assignee:

National Can Corporation - Chicago IL

International Classification:

B21D 2224

US Classification:

72348

Abstract:

A domer assembly for use with a punch reciprocable along a path on a frame of an ironing machine to reform an end wall of a container includes a center domer element surrounded by an annular element that projects beyond the surface of the center element with separate support means for the respective elements. The support means consists of a first support member carrying the center domer element with resilient compressible members interposed between the support member and the frame and a second support member supporting the annular element and also having a resilient member between the frame and the support. The respective resilient compressible members are identical in construction and are exposed so that they can readily be inspected, with independent separately pressurizable means for the respective compressible members.

US Patent:

41932790, Mar 18, 1980

Filed:

Apr 26, 1978

Appl. No.:

5/900269

Inventors:

Edward G. Maeder - Minnetonka MN

Assignee:

National Can Corporation - Chicago IL

International Classification:

B21D 2200

US Classification:

72 44

Abstract:

A cup holder sleeve and its support assembly for use in a drawing and ironing machine that has a circular bore and is supported for radial as well as tilting movement of the axis of the elongated bore with respect to the support. The support includes a pair of members that cooperate to define a recess surrounding a circular opening and an enlarged portion of the cup holder sleeve is received into the recess and cooperates with a cupper support element. The cup holder support element and cup holder sleeve are normally radially centered with respect to the opening by centering springs and the cup holder sleeve is normally maintained in engagement with the support element by hold-down springs. The cup holder sleeve and support element can be moved radially while the cup holder sleeve can be tilted with respect to the support element and all of the elements are normally maintained in a predetermined position by the centering springs and the hold-down springs.

US Patent:

42625122, Apr 21, 1981

Filed:

Apr 26, 1978

Appl. No.:

5/900272

Inventors:

Edward G. Maeder - Minnetonka MN

Assignee:

National Can Corporation - Chicago IL

International Classification:

B21B 4502

US Classification:

72 45

Abstract:

A drawing and ironing assembly consists of a redraw assembly, at least one ironing assembly and a stripper assembly that cooperate with a punch to redraw a cup and then iron the sidewall thereof. The redraw assembly includes a support and a redraw ring which are also biased to a centered position and a floating air bearing is defined between the support and the frame surface to reduce friction while a nesting ring is located adjacent the redraw ring. Lubricating means are provided for creating a generally circumferential flow into the opening in the nesting ring. The stripper assembly includes a support which carries the stripper elements and the support is biased to a centered position with respect to a predetermined axis or path for the punch and fluid is supplied to relatively movable surfaces to assist in reducing friction.

US Patent:

43241247, Apr 13, 1982

Filed:

Jun 16, 1980

Appl. No.:

6/160067

Inventors:

Edward G. Maeder - Minnetonka MN

Assignee:

National Can Corporation - Chicago IL

International Classification:

B21D 4500

US Classification:

72345

Abstract:

A drawing and ironing assembly consists of a redraw assembly, at least one ironing assembly and a stripper assembly that cooperate with a punch to redraw a cup and then iron the sidewall thereof. The redraw assembly includes a support and a redraw ring which are also biased to a centered position and a floating air bearing is defined between the support and the frame surface to reduce friction while a nesting ring is located adjacent the redraw ring. Lubricating means are provided for creating a generally circumferential flow into the opening in the nesting ring. The stripper assembly includes a support which carries the stripper elements and the support is biased to a centered position with respect to a predetermined axis or path for the punch and fluid is supplied to relatively movable surfaces to assist in reducing friction.

US Patent:

41482085, Apr 10, 1979

Filed:

Oct 11, 1977

Appl. No.:

5/840519

Inventors:

Edward G. Maeder - Minnetonka MN

Assignee:

National Can Corporation - Chicago IL

International Classification:

B21D 2220

US Classification:

72342

Abstract:

A process and apparatus for making a drawn and ironed container from a circular blank is disclosed herein. The process contemplates flowing a fluid medium through the punch of a drawing and ironing machine and maintaining the fluid medium at a predetermined temperature above the initial ambient temperature of a cup that is converted into a drawn and ironed container. The process also includes cooling the ironing dies by flowing a liquid through grooves located in the rings of the dies and the rings are made of tungsten carbide. The grooves in the ironing dies are non-radial with respect to the center of the opening in the ring so that the fluid has a tangential component of flow and flows in a generally circular pattern within the peripheral confines of the die opening.

US Patent:

41799097, Dec 25, 1979

Filed:

Apr 26, 1978

Appl. No.:

5/900270

Inventors:

Edward G. Maeder - Minnetonka MN

Assignee:

National Can Corporation - Chicago IL

International Classification:

B21B 4502
B21D 2200

US Classification:

72 45

Abstract:

A domer assembly which cooperates with the punch of a drawing and ironing machine to reform an end wall of a container includes a support that has a flat supporting surface defined in the bottom of a recess and a carrier element having a cooperating surface engaging the flat bottom surface. A domer element is supported on the carrier element and both are movable as a unit radially of the path of movement of the punch and are normally centered with respect to the axis of the punch through biasing springs which will accommodate radial movement. The assembly also includes means for supplying air between the surfaces to act as a fluid bearing and reduce friction.

Author:

Edward Maeder

ISBN #:

0500014221

Author:

Edward Maeder

ISBN #:

0810908646

Author:

Edward Maeder

ISBN #:

0847814963

Author:

Edward Maeder

ISBN #:

0875871100

Author:

Edward Maeder

ISBN #:

0875871119

Author:

Edward Maeder

ISBN #:

0875871216

Author:

Edward Maeder

ISBN #:

0875871399