H - Electricity – 02 – H
Patent
H - Electricity
02
H
333/75, 317/9
H02H 1/00 (2006.01) H02K 11/02 (2006.01) H04B 15/02 (2006.01)
Patent
CA 1140983
ABSTRACT The invention is directed to a circuit arrangement and a suppres- sor-insulator member for suppressing noise in a portable, hand-held, electric-powered tool such as a double-insulated tool or the like while at the same time providing electrical insulation between voltage-carrying portion within the tool and an exposed part of the tool accessible to the operator of the tool. The suppressor-insulator member for conducting high-frequency noise from the voltage-carrying portion within the tool to the exposed metal part includes two connecting plates connectable to the voltage-carrying portion and the exposed-metal part respectively; and, a plate-like element of insulating material sandwiched between the connect- ing plates. The plate-like element has a predetermined thickness and extends outwardly beyond the periphery of the connecting plates 90 as to cause the element to define a creep-path between the connecting plates of sufficient length to electrically insulate the exposed-metal part from the voltage-carrying portion of the tool.
294458
Black & Decker Inc.
Gowling Lafleur Henderson Llp
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