Miklos John Orosz

US Patent:

48394777, Jun 13, 1989

Filed:

Mar 7, 1988

Appl. No.:

7/168568

Inventors:

Miklos J. Orosz - Columbia SC
Dominick Tringali - Columbia SC
Donald B. Monson - Eastover SC
Gerald J. Kuiper - Columbia SC

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 920
H02B 104

US Classification:

200 50AA

Abstract:

The inventions solves the problem of convenient mounting of parts of controllers, and solves the problem of interchangeability of vacuum and air break contactors within a controller. A controller has a housing, an isolation switch mounted within the housing, a contactor mounted within the housing and connected electrically downstream from the isolation switch, and the controller has a receptacle which can accept either a vacuum contactor or an air break contactor. Also, the contactor has an operating coil and control components mounted on a side facing a door of the housing so that the coil can be replaced and the control components serviced without disturbing the contactor.

US Patent:

48313475, May 16, 1989

Filed:

Feb 5, 1988

Appl. No.:

7/154518

Inventors:

Miklos J. Orosz - Columbia SC

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 7500

US Classification:

335 8

Abstract:

Warping and twisting of the armature of a polyphase alternating current air break contactor is reduced by mounting the operating coil near the middle of the armature. A polyphase alternating current air break contactor has a frame, an armature having two ends, the ends being rotatably mounted within the frame so that the armature may rotate within the frame, at least three movable contacts and at least three stationary contacts forming a contact pair of each phase of the polyphase alternating current, and the contactor has an operating coil for the armature mounted in the frame substantially midway between the two ends of the armature.

US Patent:

48431940, Jun 27, 1989

Filed:

Feb 18, 1988

Appl. No.:

7/161235

Inventors:

Miklos J. Orosz - Columbia SC

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 944

US Classification:

200144C

Abstract:

Access to the arc chutes of a contactor is provided by mounting the arc chutes along with insulating plates on the top surface of a frame which supports the parts of the contactor. A track is formed as a pair of grooves in a top surface of the frame. The arc chutes have projections on each side which fit into the grooves of the track so that the arc chute may stand on the top surface of the frame of the contactor. Insulating plates are mounted in sockets made into the top surface of the frame and provide electrical insulation for the arc chutes.

US Patent:

46124241, Sep 16, 1986

Filed:

Oct 31, 1984

Appl. No.:

6/666945

Inventors:

Michael R. Clark - Columbia SC
Dominick Tringali - Columbia SC
Fredrick E. Woodlief - Lexington SC
Miklos J. Orosz - Columbia SC

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 920

US Classification:

200 50A

Abstract:

The invention has an enclosure, a circuit breaker mounted inside the enclosure, and a hand lever rotatably mounted upon a door of the enclosure. A drive shaft is rotatably attached at a first end to the circuit breaker so that rotation of the drive shaft operates the circuit breaker. When the door is closed a second end of the drive shaft seats in a socket in the hand lever, and rotation of the hand lever rotates the drive shaft. A spring clip is mounted within the hand lever, and the spring clip grips the second end of the drive shaft so that force applied by the hand lever to rotate the drive shaft may deform the spring clip thereby permitting deflection in a coupling between the hand lever and the drive shaft. A retainer plate attached to the hand lever catches the drive shaft when the spring clip is deformed by the force and thereby prevents opening of the door as a safety measure. The drive shaft has a reduced cross-section region between the first end and the second end.

US Patent:

47662760, Aug 23, 1988

Filed:

Jul 12, 1985

Appl. No.:

6/754877

Inventors:

Michael R. Clark - Columbia SC
Fred Erb - Columbia SC
Miklos J. Orosz - Columbia SC

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 150
H01H 142
H01H 2154

US Classification:

200256

Abstract:

The invention solves the problem of loss of contact between jaws of a stationary contact with a switchblade of a knife switch when the switchblade undergoes lateral motion, as for example, under the influence of electromagnetic forces during short circuit conditions. A jaw for a switch has a base, a pair of electrically conducting jaws for accepting a blade of a switch between the jaws, a pin mounted in a hole passing through the base; retention springs mounted on the pin and producing force against the jaws so as to maintain electrical contact between the jaws and the switchblade, wherein the pin may slide in the hole in the base so that the jaws may follow lateral motion of the switchblade.

US Patent:

46350144, Jan 6, 1987

Filed:

Jul 12, 1985

Appl. No.:

6/754874

Inventors:

Fred Erb - Columbia SC
Miklos J. Orosz - Columbia SC

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 300

US Classification:

335195

Abstract:

The electromagnetic forces tending to force open the contacts of an electromagnetic contactor are reduced by providing a current flow path having a geometry that tends to minimize the magnetically produced forces acting upon the movable contact of an electromagnetic contactor. A contactor has a frame, a stationary contact attached to the frame, a first conductor supplying the stationary contact, an armature rotatably mounted in the frame, a movable contact attached to the armature, and a second conductor supplying the movable contact. An arm has a first arm end supporting the movable contact and a second arm end attached to the armature. A rod conductor is attached to the frame at a point near to the movable contact when the movable contact is in an open position, a flexible link having a first link end is attached to the arm near the second arm end, and is attached at a second link end to the rod conductor located near the movable contact so that current flow through the arm is substantially anti-parallel to current flow through the flexible link thereby permitting at least a partial cancellation of magnetic forces generated by current flow from the arm, through the flexible link, and through the rod conductor.

US Patent:

40902307, May 16, 1978

Filed:

Feb 10, 1977

Appl. No.:

5/767278

Inventors:

Frederick B. Fuller - Columbia SC
Miklos J. Orosz - Columbia SC
Richard H. Williams - Columbia SC
Glen F. Diimmler - Irmo SC

Assignee:

Square D Company - Park Ridge IL

International Classification:

H02B 114

US Classification:

361345

Abstract:

A high voltage motor starter enclosure includes a floor mounted vertical section consisting of three starter cells, stacked one on top of the other, each cell being suitable to mount one full voltage, non-reversing, squirrel cage starter having a contactor of the air break type. Each starter cell consists of four distinct, isolated compartments: a line and vertical bus compartment containing space for incoming line cables and vertical bus; a load compartment containing space for starter current transformers and motor cables for individual starters; a low voltage control compartment having a drawout, swing-open compartment door (panel) to provide easy access to meters, relays, pilot devices and terminal blocks for inspection and maintenance thereof; and a high voltage contactor compartment containing mechanical and electrical interlocks to minimize electrical hazards, a hinged door to provide easy access to a contactor and related component parts, and to the line and vertical bus, and load compartments by removing barrier cover plates. Wheel assemblies are mounted on each contactor so that the contactor rolls into both fully engaged and disengaged positions upon a contactor rail assembly which is part of a removable tray positioned beneath the contactor to support the same. The removable tray further includes several mechanical interlocks, a shutter operator mechanism for operating a shutter plate assembly to isolate the line and load terminals from the contactor, a positive ground connection assembly so that the contactor is grounded in the engaged and disengaged positions, a contactor stop assembly, and a bottom barrier plate for isolating the high voltage contactor compartments of each cell from one another.