Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Patent
1997-04-14
1999-09-21
Gaffin, Jeffrey
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
307 41, 307116, 361160, H02J 100
Patent
active
059557915
ABSTRACT:
A mechanism for switching from independent to synchronous, or vice versa an operational circuit for supplying power to an electric dust collector (Slave) when an electric power tool (Master) is operated. In independent mode, power is supplied to both the electric power tool and the electric dust collector at all times. In synchronous mode, power is supplied to the electric power tool at all times. The current drawn by the electric power tool is directed through a coil of an electromagnetic relay. When the electric power tool is operated, the current flowing through the coil of the electromechanical relay creates a magnetic field which operates the contact of the electromechanical relay. The contact of the electromagnetic relay directs power to an electric dust collector.
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Product Literature for Craftsman "Tool Vac". Available in all Sears Department Stores.
Advertisement in Jun. 1998 American Wood Worker for Feih Power Tools Pittsburgh, PA "Feih Turbo II" Automatic.
Trend-lines Tool Catalog. p. 11 of Catalog 527A1 Vacuum for Shop-Vac "On Demand" 4 Hp Vacuum. Trend-lines Revere, MA 800-877-7899.
Gaffin Jeffrey
Kaplan Jonathan S.
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