James O Iverson

US Patent:

44233361, Dec 27, 1983

Filed:

May 17, 1982

Appl. No.:

6/378642

Inventors:

James R. Iverson - Fridley MN
Ernest L. Tell - Mounds View MN
Terry L. Pinotti - Mounds View MN

Assignee:

McGraw-Edison Company - Rolling Meadows IL

International Classification:

H02J 700

US Classification:

307 64

Abstract:

An electromechanically controlled switch assembly including an automatic, three position, removable, transfer switch and a three position, manually operated bypass switch assembly. Electromechanical controls are utilized to sense the position of both switches, including whether or not the bypass switch is being manually switched to the normal or an emergency source of power, whether or not the power sources are available, and whether or not the transfer switch is properly located within its supporting frame for normal operation, completely isolated, or isolated from the load but in the correct location for testing. In one embodiment the electromechanical controls interlock the operation of the switches and assure safety of operation of the assembly by switching the automatic transfer switch to an open or neutral position if it is being isolated, returned to normal, or if the operator is switching the bypass switch to connect the load to a source of power other than that to which the transfer switch is connecting the load.

US Patent:

42336430, Nov 11, 1980

Filed:

Nov 22, 1978

Appl. No.:

5/963162

Inventors:

James R. Iverson - Fridley MN
Derrick N. Alcock - Bloomington MN

Assignee:

Electric Machinery Mfg. Company - Minneapolis MN

International Classification:

H02B 104

US Classification:

361344

Abstract:

A switching apparatus (10) for use in an electrical control device is disclosed. The apparatus (10) includes a housing (12) divided into a switching section (28) and a bus section (26). The bus section (26) has a plurality of bus members (82) for supplying incoming electrical current. A fuse chassis (96) is attached to the housing (12) for reciprocal movement into and out of the switching section (28). A plurality of fuse units (116) are held in the fuse chassis (96). A contactor mechanism (124) is supported in the switching section (28) for connecting and disconnecting the flow of current from the bus members (82) to an electrically actuated device. A first connector mechanism (162-166) connects first ends of the fuse units (116) to the bus members (82), and a second connector mechanism connects second ends of the fuse units (116) to the contactor mechanism (124). A door (34) is attached to a front face ( 14) of the housing (12) for pivotable motion between an opened and a closed position. A moving mechanism (220) is provided for moving the fuse chassis (96) between an engaged position and an isolated position.