Patent Application
20070000907
1. Field of Invention
The present invention relates to a fuel-based tool with sensors.
2. Related Prior Art
Disclosed in Taiwanese Patent Publication No. 572813 is an electric tool with additional functions. The conventional electric tool includes a shell 1 formed with a handle 2. A battery pack 3 is attached to the handle 2 by means of a latch 4. Installed on the handle 2 is a trigger 5 operable for turning on and off a tool bit 7 such as a screwdriver bit and a drill bit. In an aspect, installed on the battery pack 3 is a radio including on and off buttons 9, volume buttons 10 and tuner buttons 11 and a speaker 12. In an alternative aspect, installed on the battery pack 3 is a clock 14. In an alternative aspect, installed on the battery pack 3 is a display 19. In practice, several battery packs are needed. One is in use while the others are spare. As time passes, such battery packs will store less electricity and must be replaced with new ones. Therefore, such battery packs must be inexpensive. However, the addition of the radio, the clock 14 or the display 19 to the battery pack 3 increases the cost inevitably. Moreover, the radio, the clock 14 and the display 19 are not essential for the operation of the electric tool. Furthermore, such battery packs discharge even when they are not in use, and often fail to provide adequate electricity when they come to use.
The present invention is intended to obviate or at least alleviate the problems encountered in prior art.
According to the present invention, a fuel-based tool includes a shell, a switch installed on the shell, a sensing device provided in the shell so as to detect at least one factor related to the operation of the fuel-based tool and a display installed on the shell and connected to the sensing device so as to show the factor.
An advantage of the fuel-based tool of the present invention is its low cost since the sensing device is positioned in the shell instead of attached to a battery that has to be replaced with a new one.
Another advantage of the fuel-based tool of the present invention is that the sensing device and the display provide essential information related to the operation of the fuel-based tool.
Other advantages and features of the present invention will become apparent from the following description referring to the drawings.
The present invention will be described through detailed illustration of three embodiments referring to the drawings.
Referring to
The shell 10 includes a handle 11. A switch 12 is installed on the handle 11. A fuel can 13 is positioned in the handle 11. A valve 14 is connected to the fuel can 13. A combustor 16 is connected to the valve 14. A working bit such as a soldering tip 15 is connected to the combustor 16.
The sensing device 20 includes a circuit board 21 and a sensor set 22 connected to the circuit board 21. The circuit board 21 includes a control chip 23 and a battery 24 both installed thereon. The control chip 23 receives signals from the sensor set 22. The battery 24 provides electricity to the circuit board 21. The control chip 23 detects the voltage provided to the circuit board 21 from the battery 24. The sensor set 22 includes a thermometer 221 and a flow rate sensor 222. The thermometer 221 is positioned on the combustor 16 so as to take the temperature of the combustor 16. The flow rate sensor 222 is positioned on the valve 14 so as to detect the flow rate of fuel going through the valve 14.
The display 30 is connected to the circuit board 21. Under the control of the control chip 23, the display 30 shows the temperature, the flow rate and the voltage. If the temperature is too high, the fuel-based tool is stopped. If the flow rate is too low, the fuel can 13 is refilled. If the flow rate is too high, there is a possibility that there is leakage. It would be better to stop to check the fuel-based tool. If the voltage is too low, the battery 24 is replaced with a new one.
Referring to
Referring to
The fuel-based tool of the present invention exhibits several advantages. Firstly, its cost is low since the sensing device is positioned in the shell instead of attached to a battery has to be replaced with a new one. Secondly, the sensing device and the display provide essential information related to the operation of the fuel-based tool. Thirdly, the fuel-based tool can be embodied in various manners.
The present invention has been described through the illustration of the embodiments. Those skilled in the art can derive variations from the embodiments without departing from the scope of the present invention. Therefore, the embodiments shall not limit the scope of the present invention defined in the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 94116196 | May 2005 | TW | national |
