Karl F Graff

Author:

Karl Graff

ISBN #:

0198561180

Author:

Karl Graff

ISBN #:

0486667456

Author:

Karl Graff

ISBN #:

0814202322

Author:

Karl Graff

ISBN #:

3928999559

Address:

4120 Stoneroot Dr, Hilliard, OH 43026

VIN:

WDDNG71X57A062378

Make:

MERCEDES-BENZ

Model:

S-CLASS

Year:

2007

US Patent:

20060071054, Apr 6, 2006

Filed:

Sep 30, 2004

Appl. No.:

10/955134

Inventors:

David Bolser - Florissant MO, US
Karl Graff - Hilliard OH, US
Timothy Trapp - Upper Arlington OH, US

International Classification:

B23K 31/02

US Classification:

228124600

Abstract:

An aluminum tubular unit for long-term, leak-free storage of fluids is formed in which an aluminum cap is ultrasonically welded to an end of the aluminum tube. The ultrasonic weld is formed from a device capable of producing a torsional vibration pattern. The ultrasonic welding of the cap to the tube eliminates the use of seals and pins to seal the cap to the tube and further eliminates the need for having a hole in the cap to mechanically couple the respective end cap to the cylindrical tube. Furthermore, since ultrasonic welding does not generate significant heat, highly volatile and flammable fluids can be present within the tube when the caps are ultrasonically welded to the cylindrical body. In addition, one or more fins used may also be welded to the outside diameter of the cylindrical body using a related ultrasonic welding process.

US Patent:

20180154422, Jun 7, 2018

Filed:

Dec 5, 2016

Appl. No.:

15/369445

Inventors:

- Columbus OH, US
Karl F. GRAFF - Hilliard OH, US

International Classification:

B21D 35/00
B21D 22/02
B21D 53/88

Abstract:

A forming die that includes a body, wherein the body of the forming die includes at least one opening created therein; at least one die segment, wherein the at least one die segment is adapted to be inserted into the at least one opening in the body of the forming die, and wherein the at least one die segment is further adapted to receive ultrasonic vibrations; and at least one geometric feature formed within the at least one die segment, wherein the at least one geometric feature affects the ultrasonic vibrations in a predetermined manner.

US Patent:

20160016219, Jan 21, 2016

Filed:

Jul 17, 2015

Appl. No.:

14/802386

Inventors:

Karl GRAFF - Columbus OH, US

Assignee:

EDISON WELDING INSTITUTE, INC. - Columbus OH

International Classification:

B21D 22/02
B21D 37/20

Abstract:

A method for reducing areas of friction within a forming die that includes identifying at least one region of interest in the forming die, wherein the at least one region of interest further includes a problematic aspect of a predetermined nature; designing a die segment corresponding to the at least one region of interest, wherein the die segment further includes at least one ultrasonic transducer embedded therein; modifying the forming die to receive the die segment; installing the die segment in the forming die and acoustically isolating the die segment from the remainder of the forming die; and energizing the ultrasonic transducer to provide ultrasonic energy to the die segment, wherein providing ultrasonic energy to the die segment addresses the problematic aspect of the at least one region of interest in the forming die.