Mechanism for switching from independent to synchronous, or vice

Details Mechanism for switching from independent to synchronous, or vice Mechanism for switching from independent to synchronous, or vice

1991-10-31

1993-10-26

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Plural load circuit systems

Selectively connected or controlled load circuits

307131, 307155, H02J 300

Patent

active

052569063

ABSTRACT:
A mechanism for switching from independent to synchronous, or vice versa an operational setting of a dust collector with a receptacle for supplying another power tool with which the dust collector is to be operated synchronously. This mechanism comprises a first switch connected in series both to a power switch of the dust collector and to an electric motor thereof, a second switch connected in series both to said power switch and to said electric motor, but arranged in parallel with the first switch, a lid which can be closed to close said receptacle or opened to expose said receptacle, a rod which engages the lid to close the first switch when the lid is closed, thus conditioning the dust collector for independent operation, and which disengages from the lid to open the first switch when the lid is opened, and a second-switch activating member for closing the second switch to operate the dust collector synchronously with another power tool when the other power tool is supplied through the receptacle. The second-switch activating member includes a current detector provided in a circuit connecting the power switch and the receptacle and located between the power switch and the receptacle and a relay connected to the current detector and having the above-mentioned second switch as a contact.

REFERENCES:
patent: B14070586 (1990-10-01), Breslin
patent: 4675537 (1987-06-01), Mione
patent: 4970623 (1990-11-01), Pintar
patent: 5099157 (1992-03-01), Meyer
patent: 5120983 (1992-06-01), Samann

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