The disadvantage of using a regular handheld circular saw is that it needs to drill four holes on the bottom plate to attach to the bench, and need to put grips to keep switches at the ‘ON’ position, and always keep the power cable connected to the wall outlet. Therefore that is not safe to use and is a safety violation.
The modified Handheld circular saw is a better design, with a specifically designed power cable.
The handheld circular saw has a power cable with four wires—live1, live2, neutral, and ground.—
The plug at the other end of the power cable has a ground pin, neutral pin, live1 pin, and a hole for live2.—
In the handheld circular saw, the live1 wire connects to the on/off switches of the handheld saw.
Live2 bypass on/off switches of the handheld circular saw.
The live1 wire on the power cable connects to the wall outlet live wire, and there is no connection to the live2 from the wall outlet. This design is for handheld circular saw operation—
There are four holes on the bottom plate of the handheld circular saw. Front holes are larger than back holes—
Bench Saw Power Connection
When using the Bench saw, the Circular saw power cable plug connects to the outlet on the Bench—
That power outlet has connections of ground, neutral, and live2. No connection to live1—
Live2 pin connects to the live2 hole on the plug of the special power cable.—
On/Off switch on the Bench connects to the live2 pin and can power on and off to the live2.—
The Bench saw connects to the power from the wall outlet with its cable.—
This power connection design allows for safe operations of the Bench saw
Handheld circular saw attachment to the Bench.
Inner surface of the top plate of the Bench has a dented area to place the circular saw. Dented area thickness is ⅛ inch to maximize the blade height.—
In the dented area, four bolts hold the circular saw. The diameter of the two front bolts is larger (⅜ inch), and the diameter of the two rear bolts is smaller (¼ inch). Which is to avoid placing the circular saw on the wrong side.—
Bolts come with butterfly nuts or clamps to attach the circular saw without a tool.
Rest of the surface area of the table top can be ¼ inch to ⅝ inch for stability.
The top table plate is removable and attaches the handheld Circular saw underneath it quickly.
The Bench saw consist of the following regular features. Opening for the circular saw blade on the top surface of the bench—
Sliding miter gauge—
Fence—
Electrical cable to the wall outlet—
Blade safety guard—
Miter Saw Power Connection
When using the Miter saw, the circular saw power cable plug connects to the outlet on the Bench—
Miter saw arm and Circular saw attachment.
There is an arm with a platform with four bolts to place and secure the Circular saw with the same four holes and butterfly nuts or clamps.—
The arm can be attached to the Bench easily and secure with a hand-tighten knob—
The handle, which is at the end of the upper arm to hold and move the arm up and down—
The arm can move up and down. Down to the bench and up with a spring load.—
When the arm is down, it aligns with the opening on the Bench for the blade. And the platform plate seat on top of the bench surface when fully down.
All Together—
It is hard to show all three pieces of equipment together because the same Handheld circular saw uses for all. But this illustrates the basic view of combining of all three pieces equipment.
This Triple Saw use the modified Handheld circular saw for all three pieces of equipment but for three different functions.
For consumers, it is less costly, easy to carry, and requires less maintenance for one machine than three if bought separately Handheld Circular saw, Bench saw and Miter saw.
Number | Name | Date | Kind |
---|---|---|---|
2786500 | Unterfranz | Mar 1957 | A |
3007499 | Dobslaw | Nov 1961 | A |
4483573 | Keller | Nov 1984 | A |
4587875 | Deley | May 1986 | A |
6151776 | DiSaverio | Nov 2000 | A |
6349712 | Halstead | Feb 2002 | B1 |
8834209 | Conrad | Sep 2014 | B2 |
9327355 | Struss | May 2016 | B2 |
10420287 | Chou | Sep 2019 | B2 |
20080210072 | Chang | Sep 2008 | A1 |
20100212468 | Ouellette | Aug 2010 | A1 |
20110079127 | Somogyi | Apr 2011 | A1 |
20120279368 | Janson | Nov 2012 | A1 |
20130081842 | Rozmarynowski | Apr 2013 | A1 |
20130092001 | Behr | Apr 2013 | A1 |
20150246399 | Knight | Sep 2015 | A1 |