David R Johansen

US Patent:

7225965, Jun 5, 2007

Filed:

Sep 22, 2003

Appl. No.:

10/667035

Inventors:

David K. Johansen - Lake in the Hills IL, US

Assignee:

Dukane Corporation - St. Charles IL

International Classification:

B23K 1/06
B23K 5/20
C29C 65/00

US Classification:

228 11, 2281101, 156 731

Abstract:

An ultrasonic welding probe power supply for powering more than one ultrasonic welding probe with power is provided. The power supply is adapted to provide power only to one welding probe at a time. A ringdown period is monitored between termination of provision of power to a first probe and the initiation of provision of power to a second probe during which provision of power to the second probe is disabled. Circuitry is provided within an ultrasonic welding probe controller to monitor probe activity and to control the interval between termination of provision of power to one probe and the initiation of provision of power to a second probe so that efficient and safe switching is made among ultrasonic probes.

US Patent:

7475801, Jan 13, 2009

Filed:

Dec 28, 2006

Appl. No.:

11/646865

Inventors:

David K. Johansen - Lake In The Hills IL, US
Charles L. Leonard - Naperville IL, US
Leo Klinstein - Glenview IL, US
William E. Jurkowski - Wheaton IL, US
Joseph Re - Lemont IL, US

Assignee:

Dukane Corporation - St. Charles IL

International Classification:

B23K 1/06
B29C 65/08

US Classification:

228 11, 228 8, 1565801

Abstract:

An ultrasonic generator comprising an input module for receiving a power signal. An output module for outputting an ultrasonic signal is also included in the generator. A motherboard is coupled to both the input module and the output module. The motherboard includes a digital controller adapted to control the input module and the output module.

US Patent:

20060011707, Jan 19, 2006

Filed:

Aug 30, 2005

Appl. No.:

11/214660

Inventors:

David Johansen - Lake In The Hills IL, US

International Classification:

B23K 1/06

US Classification:

228110100

Abstract:

A system for providing power to more than one ultrasonic welding probe from a single power supply. The system includes a first multiple probe subassembly having a first jack for connection to a first ultrasonic welding probe and a second jack for connection to a second ultrasonic welding probe. The system also includes a second multiple probe subassembly having a third jack for connection to a third ultrasonic welding probe and a fourth jack for connection to a fourth ultrasonic welding probe. At least one connector connects the first multiple probe subassembly to the second multiple probe subassembly.

US Patent:

20060213952, Sep 28, 2006

Filed:

May 24, 2006

Appl. No.:

11/440290

Inventors:

David Johansen - Lake In The Hills IL, US

International Classification:

B23K 1/06

US Classification:

228001100

Abstract:

A system for providing power to more than one ultrasonic welding probe from a single power supply. The system includes a first multiple probe subassembly having a first jack for connection to a first ultrasonic welding probe and a second jack for connection to a second ultrasonic welding probe. The system also includes a second multiple probe subassembly having a third jack for connection to a third ultrasonic welding probe and a fourth jack for connection to a fourth ultrasonic welding probe. At least one connector connects the first multiple probe subassembly to the second multiple probe subassembly.

US Patent:

58805800, Mar 9, 1999

Filed:

Jan 29, 1998

Appl. No.:

/015430

Inventors:

David K. Johansen - Lake in the Hills IL

Assignee:

Dukane Corporation - St. Charles IL

International Classification:

G05F 156
B32B 3118
B23K 106

US Classification:

323282

Abstract:

An ultrasonic generator has an output circuit for delivering ultrasonic power to a load through a transducer, the generator having an amplitude control input coupled to the output of a comparator, the inputs of which are coupled to a user interface circuit. The output circuit produces voltage and current signals which are applied to a multiplier in the interface circuit, which produces a power signal applied to an error input of the comparator, the interface circuit also having a signal processor which receives a user-input reference and applies it to a reference input of the comparator. The output of the comparator regulates the power output of the generator to the reference level, and is also coupled to an indicator circuit for providing an visual indication of whether or not the apparatus is in regulation.