Donald W Conley

US Patent:

6608414, Aug 19, 2003

Filed:

Oct 20, 2000

Appl. No.:

09/693730

Inventors:

Donald W. Conley - East Alton IL

Assignee:

Emerson Electric Co. - St. Louis MO

International Classification:

H02K 522

US Classification:

310 89, 310 71, 310 43, 277602, 277626

Abstract:

A gasket that seals a lead opening on an electric motor has opposite first and second surfaces and a lead opening passing through the gasket. The gasket has a wall projecting outwardly from the gasket first surface and extending around the gasket lead opening, defining a cavity adjacent the gasket lead opening. The gasket is positioned on the electric motor so that the gasket lead opening is aligned with an electric motor lead opening and motor leads pass through the gasket lead opening. A conduit box having a bottom wall with a lead opening is positioned on the electric motor with the gasket between the conduit box and the electric motor, the conduit box lead opening aligned with the gasket lead opening and the motor leads passing through the conduit box lead opening. A sealant is applied in the gasket cavity, and seals the gasket lead opening closed. The gasket wall prevents the sealant from contacting and adhering to the conduit box.

US Patent:

8421286, Apr 16, 2013

Filed:

Feb 3, 2009

Appl. No.:

12/365044

Inventors:

Terry L. Bossaller - Florissant MO, US
Donald W. Conley - Bethalto IL, US

Assignee:

Nidec Motor Corporation - St. Louis MO

International Classification:

H02K 5/24
H02K 15/14
H02K 5/16

US Classification:

310 68R, 310 85, 310 71, 310232, 310239, 361220, 361221

Abstract:

A method may be used to retroactively install a grounding ring on an electrical motor used with an inverter to reduce the likelihood that shaft currents affect motor bearings. The method includes securing a ring of conductive material to an endplate of an electrical motor at a position that enables a shaft extending through the endplate to pass through the ring, the ring of conductive material includes conductive material that extends from the ring to contact the shaft when the ring is secured to the endplate, and covering the ring of conductive material with a bearing cap that has an opening that enables the shaft to pass through the bearing cap.