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US 10,875,211 B2Granted
Electrical configuration for object detection system in a saw
AssigneeRobert Bosch GmbH
InventorsJohn DeCicco, Eric Laliberte, Timothy Szweda, Brian Taylor, Dieter Volpert, Gary L. Voong
Life of this patent
Estimating the term…
Abstract
An object detection system in a saw includes an electrically conductive plate positioned at a predetermined distance from the implement, a detection circuit comprising a transformer, and a single cable connecting first terminal and second terminals of the transformer. The single cable includes a first conductor electrically connected to the first terminal of the winding and to the electrically conductive plate, a second conductor electrically connected to the implement, and an electrical insulator positioned between the first conductor and the second conductor.
Claims13
A detection system for detecting contact between an implement in a saw and an object comprising:
- an electrically conductive plate positioned at a predetermined distance from the implement;
- a detection circuit comprising a transformer, the transformer comprising a first winding formed from a first electrical conductor having a first terminal and a second terminal;
- a single cable connecting the first winding to the electrically conductive plate and the implement, the single cable comprising:
- a first conductor electrically connected to the first terminal of the first winding and to the electrically conductive plate;
- a second conductor electrically connected to the second terminal of the first winding and to the implement;
- and
- an electrical insulator positioned between the first conductor and the second conductor;
- an implement enclosure;
- and
- an arbor connected to the implement enclosure and the implement, wherein the second conductor is electrically connected to the implement through the implement enclosure and the arbor,
- wherein the implement enclosure includes:
- a height adjustment carriage;
- and
- a bevel carriage, and
- wherein the second conductor is electrically connected to the height adjustment carriage in a first location and is electrically connected to the bevel carriage in a second location.
12 more elements
A detection system for detecting contact between an implement in a saw and an object comprising:
- an electrically conductive plate positioned at a predetermined distance from the implement;
- a detection circuit comprising a transformer, the transformer comprising a first winding formed from a first electrical conductor having a first terminal and a second terminal;
- a single cable connecting the first winding to the electrically conductive plate and the implement, the single cable comprising:
- a first conductor electrically connected to the first terminal of the first winding and to the electrically conductive plate;
- a second conductor electrically connected to the second terminal of the first winding and to the implement;
- and
- an electrical insulator positioned between the first conductor and the second conductor;
- a first printed circuit board (PCB) configured to support the detection circuit;
- a second PCB configured to support a power supply and a TRIAC;
- a data cable operatively connected to the first PCB and the second PCB to enable the detection circuit to transmit a control signal from the first PCB to the second PCB;
- and
- a ferrite choke formed around the data cable.
9 more elements
A detection system for detecting contact between an implement in a saw and an object comprising:
- an electrically conductive plate positioned at a predetermined distance from the implement;
- a detection circuit comprising a transformer, the transformer comprising a first winding formed from a first electrical conductor having a first terminal and a second terminal;
- a single cable connecting the first winding to the electrically conductive plate and the implement, the single cable comprising:
- a first conductor electrically connected to the first terminal of the first winding and to the electrically conductive plate;
- a second conductor electrically connected to the second terminal of the first winding and to the implement;
- and
- an electrical insulator positioned between the first conductor and the second conductor;
- a table including an opening for the implement, the table electrically isolated from the implement and the electrically conductive plate;
- a first electrical cable connecting the table to an electrical ground;
- a second cable electrically connected to an implement enclosure and to the electrical ground through a first resistor;
- and
- a third cable electrically connected to the implement and to the electrical ground through a second resistor.
9 more elements
A detection system for detecting contact between an implement in a saw and an object comprising:
- an electrically conductive plate positioned at a predetermined distance from the implement;
- a detection circuit comprising a transformer, the transformer comprising a first winding formed from a first electrical conductor having a first terminal and a second terminal;
- a single cable connecting the first winding to the electrically conductive plate and the implement, the single cable comprising:
- a first conductor electrically connected to the first terminal of the first winding and to the electrically conductive plate;
- a second conductor electrically connected to the second terminal of the first winding and to the implement;
- and
- an electrical insulator positioned between the first conductor and the second conductor;
- a table including an opening for the implement, the table electrically isolated from the implement and the electrically conductive plate;
- a first electrical cable connecting the table to an electrical ground;
- and
- a rip fence positioned over a surface of the table, the rip fence including a first electrical insulator positioned between the rip fence and the table and a second electrical insulator positioned above the surface of the rip fence.
8 more elements
Dependencies are inferred from the claim text.