# US 7,608,790 B2 · Wireless electrical control system

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- Number: US 7,608,790 B2
- Document ID: US7608790B2
- Status: Granted
- Kind: B2
- Application number: 11/249,666
- Filed: 2005-10-13
- Published: 2006-06-01
- Granted: 2009-10-27
- Earliest claimed: 2002-04-09
- Assignees: Black & Decker Inc.
- Inventors: James Patton
- Web page: https://patentgrep.com/patent/US7608790B2

## CPC

- B25F 5/00: Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- Y10T 409/306608: End mill [e.g., router, etc.]
- B25F: COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR {(machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass B23P23/00 and subgroups)}
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present invention is directed to a wireless electrical control system for power tool and specifically to a wireless control device for a router. The electrical control system may include a handle suitable for manipulating a router. A switch and a wireless transmitter are disposed in the handle. Communicatively coupled to the transmitter is a wireless receiver capable of receiving the transmissions from the transmitter in the handle. In alternative embodiments the wireless receiver is disposed in the router itself or the receiver is disposed in an outlet unit, which is capable of electrically coupling to the router's electrical cord and an electrical outlet. The wireless receiver of the present invention is capable of controlling the flow of electricity to the electrical system of the router so that the router is capable of being altered from the switch mounted on the handle, thus allowing users to change the power setting while retaining secure control of the router.

## Claims

### Claim 1

A wireless electrical control system for a power tool, comprising:
a handle connected to the power tool, suitable for manipulating the power tool;
a wireless transmitter disposed at least partially in said handle;
a switch coupled to said wireless transmitter, said switch is mounted to said handle; and
a wireless receiver capable of receiving transmission from said wireless transmitter, said receiver is disposed in the power tool;
wherein said wireless receiver is capable of controlling the power tool's electrical system.

### Claim 2 (depends on 1)

The wireless electrical control system for a power tool of claim 1, further comprising an indicator capable of providing an indication of the status of the power tool's electrical system, said indicator being mounted to the power tool.

### Claim 3 (depends on 1)

The wireless electrical control system for a power tool of claim 1, wherein the wireless transmitter and the wireless receiver are capable of implementing coded communication.

### Claim 4 (depends on 3)

The wireless electrical control system for a power tool of claim 3, wherein coded communication selected from the group consisting of spread spectrum, frequency modulation, amplitude modulation, pulse modulation, frequency hopping, time hopping, and direct signaling.

### Claim 5 (depends on 1)

The wireless electrical control system for a power tool of claim 1, wherein the switch requires constant actuation for the power tool's electrical system to activate.

### Claim 6 (depends on 1)

The wireless electrical control system for a power tool of claim 1, wherein a power tool is selected from the group consisting of a drill, a saw, a sander, a biscuit joiner, a joiner, a saber saw, and a jig saw.

### Claim 7 (depends on 1)

The wireless electrical control system for a power tool of claim 1, further comprising a visual indicator capable of providing a visual indication of the status of the power tool's electrical system, said indicator being mounted to the power tool.

### Claim 8 (depends on 1)

The wireless electrical control system for a power tool of claim 1, wherein the switch is configured to he operated using a single hand of a user.