Thomas C Leach

US Patent:

56572000, Aug 12, 1997

Filed:

Jan 11, 1996

Appl. No.:

8/583834

Inventors:

Thomas Carver Leach - Lexington KY
James Paul Mills - Lexington KY
Robert James Cooper - Lexington KY

Assignee:

Square D Company - Palatine IL

International Classification:

H02B 100

US Classification:

361668

Abstract:

The present invention provides a meter socket arrangement wherein a tubular bus is coupled between each planar bus bar connected to the power source and meter input terminals for transporting electrical power from the planar bus bars to their respective meter input terminals. This invention also provides a novel boot for connection between the tubular bus and the planar bus bar to provide improved electrical connection between the bus bar and the tubular bus. The present invention may be utilized in any meter socket arrangement, including meter socket arrangements used in combination service entrance devices.

US Patent:

51209136, Jun 9, 1992

Filed:

Feb 25, 1991

Appl. No.:

7/661567

Inventors:

Thomas C. Leach - Cedar Rapids IA
James B. MacBeth - Danville IA

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 920
H01H 3346

US Classification:

200 50AA

Abstract:

A circuit breaker drawout arrangement includes a drive mechanism for moving a circuit breaker along a pair of rails between a Connect and a Disconnect position by means of a drive tool. A torque limited clutch permits a lower maximum torque when moving the breaker to the Connect position and a greater maximum torque when moving from the Connect position to the Disconnect position. In one embodiment the clutch is formed by a pair of oppositely orientated unidirectional roller clutches in the drive nut and in another by a ball and detent arrangement in the drive nut.

US Patent:

56382561, Jun 10, 1997

Filed:

May 30, 1995

Appl. No.:

8/454475

Inventors:

Thomas C. Leach - Lexington KY
Kenneth L. Uhlman - Harrodsburg KY
Larry D. Polston - Nicholasville KY
James P. Mills - Lexington KY

Assignee:

Square D. Company - Palatine IL

International Classification:

H02B 700

US Classification:

361641

Abstract:

The present invention provides an overhead/underground combination service entrance device having a common enclosure that is divided by a center barrier into a first section for housing a watt-hour meter socket and a second section for housing a panel board containing a number of circuit breakers. The top panel of the common enclosure has a hole bringing electrical conductors into the first section from top of the common enclosure. A rain cap made from a suitable material is securely placed on the top panel. The rain cap has a hole therein that lies above the hole in the top panel so as to provide access to the first section from the outside. A hub closure plate is attached on the rain cap to cover sealingly cover the hole in the top panel. Means are provided for mounting the combination service entrance device on a flat surface and on vertical poles for temporary use. The combination device is preferably factory-assembled as a semi-flush-mounted unit and having the provisions for converting the device from a temporary service to permanent service.

US Patent:

54039746, Apr 4, 1995

Filed:

Jan 8, 1993

Appl. No.:

8/002371

Inventors:

Thomas C. Leach - Lexington KY
Marvin L. Linder - Cedar Rapids IA

Assignee:

Square D Company - Palatine IL

International Classification:

H02G 304

US Classification:

174 48

Abstract:

The present invention provides a wireway assembly for mounting to the housing wall of an electrical distribution device to enclose and protect electrical wiring therein. Generally rectangular, u-shaped channels have at least one aperture positioned in the channel wall to overlap the aperture of an adjacent channel to define a wireway through which the electrical wiring extends from the bight portion of one channel to the bight portion of the adjacent channel. An interlocking means manually attaches and detaches each channel with an adjacent channel and with the housing wall. The present invention also includes a method of safely protecting electrical wiring extending across a housing wall of an electrical distribution device. The method includes the step of interlocking a plurality of u-shaped channels in an abutting position to each other and the housing wall.

US Patent:

54464315, Aug 29, 1995

Filed:

Apr 28, 1994

Appl. No.:

8/234335

Inventors:

Thomas C. Leach - Lexington KY
Duane L. Turner - Cedar Rapids IA
Darryl Carter - Cedar Rapids IA

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 7300

US Classification:

335 18

Abstract:

A ground fault module is provided for protecting a circuit interrupter connected between the load and line terminals of a phase and neutral power line. The module includes a sensor for detecting a current imbalance between the phase and neutral power lines. A phase conductor having a rigid, elongated body made of solid, electrically-conducting material with a first and second end is adapted for connection to the load and line phase power line. A neutral conductor having a rigid, elongated body made of solid, electrically-conducting material with a first and second end is adapted for connection to the load and line neutral power line. Preferably, terminals are used to clamp the ends of the phase and neutral conductors to the load power line and load neutral line. The phase and neutral conductor are operatively connected to the sensor. The present invention also provides a housing assembly for a ground fault circuit interrupter which includes a base made of electrically insulating material with a plurality of cavities for retaining the ground fault module and terminals therein.

US Patent:

53591615, Oct 25, 1994

Filed:

Jan 8, 1993

Appl. No.:

8/002009

Inventors:

Thomas C. Leach - Lexington KY
Steven A. DeCook - Marion IA

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 3302
H01H 150

US Classification:

200746R

Abstract:

The invention provides a spring exerting a non-linear force between a contact carrier and a contact blade in a circuit interrupter. The inventive spring includes at least one elongated cantilever. The length of the cantilever has the shape of an arch made with a non-uniform angle and is formed from an elastic material. The cantilever is supported at one end against the carrier with the length of the cantilever positioned parallel to the carrier and the opposite end of the cantilever abutting the contact blade so that the carrier supports more of the length of the cantilever as the displacement between the carrier and the contact blade decreases. The invention also includes a method of operating a circuit interrupter by non-uniformly increasing the force exerted against a movable contact as it engages a stationary contact to complete a circuit.

US Patent:

50973827, Mar 17, 1992

Filed:

Feb 25, 1991

Appl. No.:

7/661024

Inventors:

Thomas C. Leach - Cedar Rapids IA
Marvin L. Linder - Hiawatha IA
Donald H. Haase - Cedar Rapids IA

Assignee:

Square D Company - Palatine IL

International Classification:

H02B 114

US Classification:

361345

Abstract:

A racking mechanism for a fused circuit breaker includes a drive assembly that is removable as a unit from the breaker and fuse truck. A modular assembly includes a drive unit having a drive shaft and a travelling nut and yoke for rotating a pair of levering arms for moving the breaker among a plurality of positions in a cubicle. All interlocks are included on the modular drive assembly. An indicator is cam operated by the travelling nut and includes a face having indicia that identifies the direction of rotation of the drive shaft.

US Patent:

54812356, Jan 2, 1996

Filed:

Mar 31, 1994

Appl. No.:

8/221424

Inventors:

James A. Heise - Cedar Rapids IA
Duane L. Turner - Cedar Rapids IA
Jeffrey M. Kaufman - Cedar Rapids IA
Thomas C. Leach - Lexington KY

Assignee:

Square D Company - Palatine IL

International Classification:

H01M 7300

US Classification:

335 18

Abstract:

A conducting spring is provided for exerting a biasing force against a test button to open a circuit interrupter test circuit. The spring includes a one-piece, elongated cantilever having a first and second end. The cantilever is formed from an electrically conducting material. One of the cantilever ends is adapted to directly secure to a first terminal of the test circuit. The other cantilever end is adapted to directly and reversibly contact a second terminal of the test circuit. The spring also includes means for resiliently flexing the second end of the cantilever in relation to the first end. The flexing means is integrally formed with the cantilever. Also provided is a ground fault circuit interrupter and a ground fault circuit module for protecting a circuit interrupter with a push-to-test feature.