David K 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:

44397194, Mar 27, 1984

Filed:

Jul 9, 1982

Appl. No.:

6/396675

Inventors:

Frederic J. Lambert - Morrisville PA
Donald J. Bosack - Barrington IL
David K. Johansen - Lake in the Hills IL

Assignee:

GNB Batteries Inc. - Mendota Heights MN

International Classification:

H02J 704

US Classification:

320 31

Abstract:

A timing circuit for charging motive power batteries (B). The timing control circuit (25) provides different times of charge in accordance with the time at which a predetermined voltage/current state of the battery is achieved. Control circuit (25) cooperates with a controller (18) in causing termination of the charging operation immediately upon reaching of the voltage/current state if this occurs in a first time slot of an initial control time period. The timing circuit (25) provides an automatic finish time period of charge if the battery (B) reaches the predetermined voltage/current state at some time during the initial control time period. The control includes a switch (23) permitting the user to cause an automatic additional amount of charging upon completion of the normal charging cycle effected by the control, such as for effecting a weekend charge. The control further includes structure for terminating the charging operation in the event the battery being charged does not reach the predetermined voltage/current state at the end of a preselected maximum time. A signal light (24) signals such a fault condition in the charging operation.

US Patent:

44504012, May 22, 1984

Filed:

Jul 9, 1982

Appl. No.:

6/396951

Inventors:

Frederic J. Lambert - Morrisville PA
Donald J. Bosack - Barrington IL
David K. Johansen - Lake in the Hills IL

Assignee:

GNB Batteries Inc. - Mendota Heights MN

International Classification:

H02J 700

US Classification:

320 22

Abstract:

An improved battery charger apparatus having a control circuit providing different charging periods which are automatically correlated with the type of battery connected to the charge for charging the connected battery to a preselected full charge state. The apparatus has a charging circuit for charging the battery, a sensing circuit for sensing the state of the battery during charging thereof by the charging circuit and a circuit for determining first and second predetermined reference voltage/current states. The apparatus causes the charging of the battery at a preselected initial charging level for an initial time period and establishes a first finish time period. The apparatus further determines a first time at which the state of the battery reaches the first predetermined referenced voltage/current state during the initial time period, and causes the charging circuit to continue to charge the battery at a preselected first charging level after the determination of the first time for a first finish time period. The apparatus further establishes a second finish time period and determines a second time at which the state of the battery reaches the second predetermined referenced voltage/current state during the first finish time period. The apparatus terminates charging of the battery if the state of the battery does not reach the second predetermined referenced voltage/current state during the first finish time period, and causes the charging circuit to continue to charge the battery at a preselected second charging level after the determination of the second time for a second finish time period.

US Patent:

42186447, Aug 19, 1980

Filed:

Sep 19, 1978

Appl. No.:

5/943874

Inventors:

Robert F. Bourke - Kamiah ID
David K. Johansen - Lake In The Hills IL

Assignee:

Gould Inc. - Rolling Meadows IL

International Classification:

H02J 704

US Classification:

320 21

Abstract:

In a charger for the battery of an electric vehicle, a stable time of day clock is provided to initiate charging at a preselected time of day, and to control at least a portion of the charge cycle. The clock can be set in accordance with the schedule established for the vehicle so that charging will be accomplished automatically during the scheduled time of day when the vehicle is not in use. In the case of a fleet of such vehicles, at the termination of use, each driver simply parks the vehicle and connects an AC power line; charging for each vehicle will be initiated as determined by the clock associated therewith. An indicating system is provided to advise the driver that power has been properly connected and charging will commence at the appropriate time.

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.