John M Wolka

US Patent:

D529870, Oct 10, 2006

Filed:

May 12, 2004

Appl. No.:

29/205260

Inventors:

Neil McCord - Fayetteville GA, US
Joseph R. Rostron - McDonough GA, US
John M. Wolka - Fayetteville GA, US

International Classification:

1303

US Classification:

D13158

US Patent:

D531133, Oct 31, 2006

Filed:

May 12, 2004

Appl. No.:

29/205277

Inventors:

Neil McCord - Fayetteville GA, US
Joseph R. Rostron - McDonough GA, US
John M. Wolka - Fayetteville GA, US

International Classification:

1303

US Classification:

D13158

US Patent:

20050241928, Nov 3, 2005

Filed:

Apr 30, 2004

Appl. No.:

10/836181

Inventors:

Neil McCord - Fayetteville GA, US
Joseph Rostron - McDonough GA, US
John Wolka - Fayetteville GA, US

International Classification:

H01H009/30

US Classification:

200400000

Abstract:

An electric power interrupter with an internal contactor that is suitable for use as a line and load switch constructed from light weight materials including a fiberglass or composite insulator and aluminum flanges. The light weight design feature allows the power interrupter to be supported above a standard disconnect switch insulator without having to replace or reinforce the insulator. The power interrupter also includes a latch mechanism with a low-force trip action, such as a spring-driven toggle mechanism that accelerates the internal contactor to break the electric power circuit on the opening stroke. This low-force trip action allows the power interrupter to be actuated by a standard disconnect switch operating mechanism without having to upgrade or augment the standard operating mechanism. For these reasons, the power interrupter may be installed as a retrofit upgrade to an existing standard disconnect switch without having to modify the underlying disconnect switch.