Ronald J Etscheidt

US Patent:

7009126, Mar 7, 2006

Filed:

Nov 24, 2003

Appl. No.:

10/721050

Inventors:

Ronald J. Etscheidt - Anamosa IA, US
Douglas P. VanWaart - Anamosa IA, US

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 1/64

US Classification:

200293, 200303

Abstract:

A terminal cover for use on molded case circuit breakers. The terminal cover limits access to circuit breaker electrical terminals and uninsulated portions of electrical conductors entering the terminals. The terminal cover also provides selective access to the terminal binding screws.

US Patent:

20020100671, Aug 1, 2002

Filed:

Jan 31, 2001

Appl. No.:

09/773814

Inventors:

Ronald Etscheidt - Anamosa IA, US
Donald Nohavec - Fort Collins CO, US
Joni Orum - Atkins IA, US
Douglas Thomas - Milford NE, US

International Classification:

H01H001/00

US Classification:

200/305000

Abstract:

The present invention provides an improved connector on a terminal of an overload responsive circuit breaker. The connector is inexpensive, readily manufactured and installed and firmly secures a wire connector and wire connector shoe to a circuit breaker terminal, which is electrically coupled to the circuit breaker circuitry. The improved connector of this invention comprises a circuit breaker terminal having a cold formed, countersink aperture on a top surface of the breaker terminal and an extruded raised ring on the bottom surface of the breaker terminal. The wire connector is a square-shaped element having a plurality of openings for receipt of at least one wire, the circuit breaker terminal and the wire connector shoe. In assembly of the three piece connector, the circuit breaker terminal is inserted into an opening in the wire connector. The wire connector shoe is then inserted into at least one opening in the wire connector and surrounds a portion of the circuit breaker terminal within the wire connector. The wire connector shoe has a protrusion, which is cold formed by displacing shoe material into the countersink aperture on the top surface of the circuit breaker terminal. The protrusion mechanically adheres to the top surface material defining the countersink aperture and the extruded raised ring mechanically adheres to an interior surface of the wire connector which defines a bottom surface aperture thereby securely attaching the wire connector shoe, wire connector and circuit breaker terminal.

US Patent:

49123807, Mar 27, 1990

Filed:

Feb 28, 1989

Appl. No.:

7/316849

Inventors:

Henry J. Zylstra - Alburnett IA
Darrell P. Ophaug - Marion IA
Ronald J. Etscheidt - Anamosa IA

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 358

US Classification:

318285

Abstract:

A field installable motor operator for a circuit breaker includes a bidirectionally controllable motor that is coupled through a torque limited module to a circuit breaker operating mechanism. The motor is bidirectionally driven by a transistor switching bridge that supplies output current in reversible flow directions through one of the windings of the motor to the input of a rectifier bridge that supplies the other winding with currents that flow in the same direction. The torque limited module includes a centering and spacing ring which precisely confines the clutch elements to provide consistent torque. The motor is supplied with a current pulse of 250 milliseconds duration that is longer than the time required to fully operate the breaker. The clutch slips when breaker operation is completed and permits the motor to overrun without damage.

US Patent:

49104438, Mar 20, 1990

Filed:

Feb 28, 1989

Appl. No.:

7/317268

Inventors:

Henry J. Zylstra - Alburnett IA
Ronald J. Etscheidt - Anamosa IA

Assignee:

Square D Company - Palatine IL

International Classification:

H02P 122

US Classification:

318294

Abstract:

A field installable motor operator for a circuit breaker includes a bidirectionally controllable motor that is coupled through a torque limited module to a circuit breaker operating mechanism. The motor is bidirectionally driven by a transistor switching bridge that supplies output current in reversible flow directions through one of the windings of the motor to the input of a rectifier bridge that supplies the other winding with currents that flow in the same direction. The torque limited module includes a centering and spacing ring which precisely confines the clutch elements to provide consistent torque. The motor is supplied with a current pulse of 250 milliseconds duration that is longer than the time required to fully operate the breaker. The clutch slips when breaker operation is completed and permits the motor to overrun without damage.

US Patent:

51668629, Nov 24, 1992

Filed:

Sep 28, 1990

Appl. No.:

7/590632

Inventors:

Leon W. Durivage - Marion IA
Ronald J. Etscheidt - Anamosa IA

Assignee:

Square D Company - Palatine IL

International Classification:

H05K 720

US Classification:

361383

Abstract:

There is provided a panel for mounting electronic components to circuit breakers. The panel includes formations for cooling electronic components, a method for sealing the electronic adjustment switches against tampering, and a method for preventing invalid electronic adjustments to the trip unit.

US Patent:

49210831, May 1, 1990

Filed:

Feb 28, 1989

Appl. No.:

7/317269

Inventors:

Ronald J. Etscheidt - Anamosa IA
Darrell P. Ophaug - Marion IA

Assignee:

Square D Company - Palatine IL

International Classification:

F16D 2104

US Classification:

192 20

Abstract:

A field installable motor operator for a circuit breaker includes a bidirectionally controllable motor that is coupled through a torque limited module to a circuit breaker operating mechanism. The motor is bidirectionally driven by a transistor switching bridge that supplies output current in reversible flow directions through one of the windings of the motor to the input of a rectifier bridge that supplies the other winding with currents that flow in the same direction. The torque limited module includes a centering and spacing ring which precisely confines the clutch elements to provide consistent torque. The motor is supplied with a current pulse of 250 milliseconds duration that is longer than the time required to fully operate the breaker. The clutch slips when breaker opeation is completed and permits the motor to overrun without damage.