John F Schultz

US Patent:

41533186, May 8, 1979

Filed:

Oct 17, 1977

Appl. No.:

5/842430

Inventors:

Clifford F. Bishop - Cedar Rapids IA
John T. Schultz - Cedar Rapids IA

Assignee:

Square D Company - Park Ridge IL

International Classification:

H01R 918
H02B 120
H02G 500

US Classification:

339 22B

Abstract:

The following specification describes a bus stab for a panel-board assembly comprising a U shaped bus stab arranged to establish a connection to either a spring clip terminal of a plug-on type circuit breaker or to a bolt-on type terminal of a circuit breaker.

US Patent:

41468554, Mar 27, 1979

Filed:

Sep 6, 1977

Appl. No.:

5/830506

Inventors:

John T. Schultz - Cedar Rapids IA
James W. Dickens - Marion IA

Assignee:

Square D Company - Park Ridge IL

International Classification:

H01H 7500
H01H 7700
H01H 8300

US Classification:

335 8

Abstract:

A multi-pole circuit breaker includes a wide toggle shaft which spans all of the poles of the breaker and which is electrically neutral. The lower links of the toggle mechanism are made of phenolic or other insulating material which thus electrically insulates the wide toggle shaft spanning all of the poles of the breaker and makes the toggle shaft electrically neutral. A plurality of short toggle springs may therefore be connected between the wide toggle shaft and a handle arm of corresponding width. The plurality of short toggle springs provide as much tripping energy as the longer single or double toggle springs of prior art circuit breakers in which the springs are clustered together in alignment with one pole of the breaker to which they are electrically connected and whose polarity the toggle springs in such prior art breakers accordingly take. Thus by providing a tripping mechanism which can utilize a plurality of short toggle springs in place of one or two long ones, a lower profile circuit breaker is possible. In addition, the movable contact blade of each pole of the multi-pole breaker of this invention is biased independently toward a contact closed position.

US Patent:

43073590, Dec 22, 1981

Filed:

Nov 5, 1979

Appl. No.:

6/090946

Inventors:

John T. Schultz - Cedar Rapids IA
Clifford F. Bishop - Cedar Rapids IA

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 7348
H01H 7500
H01H 7700

US Classification:

335 23

Abstract:

A multipole circuit breaker having a housing with a top wall center recess receiving a center strut of an interior trim. An operating assembly is interconnected with a trip assembly through a translator link passing beneath the center recess and is operable by the magnetic assembly to assist the operating assembly in separating the breaker contacts in response to a fault current. A closure member overlapped by the interior trim prevents access to the load wires. A voltage reject configuration is provided on the housing to prevent mounting in a panelboard designed to carry voltages higher than that for which the circuit breaker is rated and a jaw assembly for the breaker is disclosed having a plurality of contact positions with each leg of a U shaped bus stab.

US Patent:

43777953, Mar 22, 1983

Filed:

Jul 29, 1981

Appl. No.:

6/287853

Inventors:

John T. Schultz - Cedar Rapids IA
Clifford F. Bishop - Cedar Rapids IA

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 7348

US Classification:

335 23

Abstract:

A multipole circuit breaker having a housing with a top wall center recess receiving a center strut of an interior trim. An operating assembly is interconnected with a trip assembly through a transistor link passing beneath the center recess and is operable by the magnetic assembly to assist the operating assembly in separating the breaker contacts in response to a fault current. A closure member overlapped by the interior trim prevents access to the load wires. A voltage reject configuration is provided on the housing to prevent mounting in a panelboard designed to carry voltages higher than that for which the circuit breaker is rated and a jaw assembly for the breaker is disclosed having a plurality of contact positions with each leg of a U shaped bus stab.