Christian Daehler

US Patent:

6794963, Sep 21, 2004

Filed:

Apr 24, 2002

Appl. No.:

10/063457

Inventors:

Thomas Gary OKeeffe - Farmington CT
Christian Daehler - Avon CT
Shridhar Champaknath Nath - Niksayuna NY
Anitha Bochala - Andhra Preadesh, IN

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01H 900

US Classification:

335 21, 335172, 335174, 335176

Abstract:

A magnetic trip unit for actuating a latching mechanism to trip a circuit breaker upon an overcurrent condition, the magnetic trip unit includes: a flux return component in electromagnetic communication with an electrically conductive strap; a tube disposed within the flux return component; a stator disposed at a first end of the tube and connected to the flux return component, the stator having a stator surface at one end; and a plunger slidably extending from a second end of the tube, the plunger comprises a plunger surface at one end facing the stator surface, the plunger further includes another end adapted to operably interact with the latching mechanism, the plunger is biased to a predetermined gap position.

US Patent:

6980069, Dec 27, 2005

Filed:

Apr 18, 2002

Appl. No.:

10/063401

Inventors:

Thomas Gary O'Keeffe - Farmington CT, US
Christian Daehler - Avon CT, US
Biranchi Narayana Sahu - Orissa, IN
Varma Dantuluri - Secunderabad, IN

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01H075/12

US Classification:

335 35, 335174, 335 38

Abstract:

A method and magnetic trip unit for actuating a latching mechanism to trip a circuit breaker upon an overcurrent condition, the magnetic trip unit including: a first electrically conductive strap configured to conduct an electrical current; a first magnet yoke disposed proximate to the first electrically conductive strap; and a first armature pivotally disposed proximate to the first magnetic yoke in operable communication with the latching mechanism; the first armature providing a magnetic path having a reluctance to magnetic flux; and the reluctance is adjusted to prevent saturation of the magnetic flux when the current through the strap is a first number times a rated current of the circuit breaker and the reluctance is adjusted to promote saturation of magnetic flux when the current through the strap is a second number times the rated current of the circuit breaker, wherein the first number is a number smaller than the second number.

US Patent:

6980071, Dec 27, 2005

Filed:

Sep 24, 2003

Appl. No.:

10/671302

Inventors:

Navin Kumar - Karnataka, IN
Christian Daehler - Greensburg PA, US
Ronald Ciarcia - Bristol CT, US
Narender Macha - Hyderabad, IN
Anantharam Subramanian - Secunderabad, IN
Luis A. Brignoni - Vega Alta PR, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01H009/00

US Classification:

335172, 335176, 335174

Abstract:

A trip system for a circuit breaker having a support frame, a trip unit, a crossbar, and a trip bar, is disclosed. The trip unit is responsive to an electric current for generating a trip force, the crossbar is directly coupled to the trip unit and to the support frame, and the trip bar is directly coupled to the support frame. The electric current at the trip unit generates a trip force that acts upon the trip bar to trip the circuit breaker. The crossbar remains substantially stationary during the tripping action.

US Patent:

8440913, May 14, 2013

Filed:

Apr 16, 2010

Appl. No.:

12/761430

Inventors:

Jason Stull - Mount Pleasant PA, US
Vince Rogers - Del Mar CA, US
Christian Daehler - Greensburg PA, US

Assignee:

ABB Technology AG - Zurich

International Classification:

H01B 17/16
H01H 33/00

US Classification:

174161R, 174163 R, 218 97, 218134, 218139, 218155

Abstract:

A pole assembly for a three phase breaker includes a center pole and a pair of outer poles positioned on opposed sides of the center pole. A pair of brackets are positioned at opposed ends of the pole, and include a center groove and a pair of outer grooves. The center pole is positioned in the center groove. The outer poles are secured in the outer groove in a shipping configuration and an installed configuration. When in the shipping configuration the bushings of all the poles are parallel. When in the installed configuration the bushings of the outer poles are angled away from the bushings of the center pole.

US Patent:

20030174033, Sep 18, 2003

Filed:

Mar 12, 2002

Appl. No.:

10/095637

Inventors:

Christian Daehler - Avon CT, US
Biranchi Sahu - Orissa, IN
Varma Dantuluri - Secunderabad, IN
Tom O'Keeffe - Southlake TX, US

International Classification:

H01H075/12
H01H077/00

US Classification:

335/035000

Abstract:

A motor protection trip unit for a circuit breaker includes an electrically conductive strap, a yoke including a body including a first side wall, a second side wall, a third side wall, and a fourth side wall. The third side wall extends between the first and second side walls, the fourth side wall extending from the first and second side walls and comprising a yoke gap extending therethrough. A motor protection trip unit for a circuit breaker also includes a flapper holder coupled to the strap, a flapper pivotally coupled to the flapper holder, and a biasing mechanism coupled between the flapper holder and the flapper. The biasing mechanism is configured to maintain the flapper a distance from the yoke such that a yoke-flapper gap is defined between the yoke and the flapper.

US Patent:

20050045595, Mar 3, 2005

Filed:

Sep 3, 2003

Appl. No.:

10/654671

Inventors:

Christian Daehler - Greensburg PA, US

International Classification:

H01H033/88

US Classification:

218057000

Abstract:

Another preferred embodiment of a valve for a puffer interrupter assembly includes a body for mounting in the puffer interrupter assembly. The body has a through hole formed therein and extending between a first and a second major surface thereof. The valve also includes a ring member having a first major surface contacting the second major surface of the body and covering the through hole on a selective basis. The valve also includes a wave spring contacting a second major surface of the ring member.

US Patent:

20150311017, Oct 29, 2015

Filed:

Apr 29, 2014

Appl. No.:

14/264343

Inventors:

- Zurich, CH
Christian Daehler - Greensburg PA, US
Elizabeth L. Dahm - Pittsburgh PA, US

International Classification:

H01H 33/53

Abstract:

Mounting structure is provided for mounting a tank to support structure. The tank has a flange extending from a body thereof. The mounting structure includes at least a pair of first bores extending into the flange in a first direction. At least a pair of second bores. Each second bore extends into the flange in a direction generally transverse with respect to an associated first bore so that each second bore communicates with the associated first bore. A pin is disposed in each of the second bores. Each pin has a threaded pin bore that aligns axially with the associated first bore. A bolt is disposed through a bolt hole in the support structure, into an associated first bore and in threaded engagement with the threaded pin bore of an associated pin so as to secure the tank to the support structure.

US Patent:

20150252835, Sep 10, 2015

Filed:

Mar 5, 2014

Appl. No.:

14/197623

Inventors:

- Zurich, CH
Christian Daehler - Greensburg PA, US

Assignee:

ABB TECHNOLOGY AG - Zurich

International Classification:

F16B 39/04

Abstract:

A tamper-resistant fastening provision includes a fastener cover having a first flange and second flange joined at one end. The first flange has an elongate opening slidably receiving a shaft of a fastener, and the second flange has an opening disposed closer to a second end of the cover than the first end. The cover is moveable to a first position such that the fastener head is operably accessible through the second opening and the fastener shaft is disposed at an end of the elongate opening proximate to the second end of the cover. The cover is also moveable to a second position such that the cover is in an interference position relative to the fastener head and the shaft is disposed at an end of the elongate opening proximate to the first end of the cover.