1. An exhaust enhancement device for a motorcycle exhaust pipe comprising a tubular cylindrical body having cylindrical end portions of substantially uniform diameter configured to be received within a motorcycle exhaust pipe adjacent the exit end thereof, and a reduced diameter portion located between said cylindrical end portions and an anti-reversion piece mounted on said tubular cylindrical body and projecting radially inwardly therefrom to at least the center of the tubular body and into path of exhaust gases through the tubular cylindrical body.
2. The device of claim 1, including a threaded hole provided in said tubular cylindrical body adapted for receiving a threaded fastener for securing the device within the exhaust pipe.
3. The device of claim 1, including at least one additional threaded hole provided in said tubular cylindrical body, and wherein said anti-reversion piece is threaded into said at least one additional threaded hole and projects into the interior of the tubular cylindrical body.
4. The device of claim 3, wherein said anti-reversion piece comprises a threaded shaft and a washer welded to said shaft.
5. The device of claim 3, wherein said anti-reversion piece comprises a shaft having a threaded portion threaded into said threaded hole and an unthreaded portion projecting into the interior of the tubular cylindrical body.
6. The device of claim 3, additionally including a lock nut threaded onto said anti-reversion piece and tightened against said threaded hole.
7. The device of claim 2, wherein said threaded hole comprises a hole formed in said tubular cylindrical body and a threaded nut positioned over said hole and welded to the interior surface of the cylindrical body.
8. An exhaust enhancement device for a motorcycle exhaust pipe comprising a tubular cylindrical body formed of steel tubing, said body having cylindrical end portions of substantially uniform diameter joined by an integral central portion of substantially uniform diameter, a first hole formed in said cylindrical body, a first threaded nut positioned over said hole on the interior of said cylindrical body and secured in place by welding, a fastener having threads configured for engagement with said first threaded nut for securing the exhaust enhancement device inside the motorcycle exhaust pipe, a second hole formed in said cylindrical body, a second threaded nut positioned over said second hole on the interior of said cylindrical body and secured in place by welding, and an anti-reversion piece threaded into said second threaded nut and projecting inwardly into the interior of the tubular cylindrical body to at least the center of the tubular body and into path of exhaust gases therethrough.
9. The device of claim 8, wherein said anti-reversion piece comprises a threaded shaft and a washer welded to said shaft.
10. An exhaust enhancement device for a motorcycle exhaust pipe comprising a tubular cylindrical body formed of steel tubing, said body having cylindrical end portions of substantially uniform diameter joined by an integral reduced diameter portion of substantially uniform diameter, a first hole formed in said cylindrical body, a first threaded nut positioned over said hole on the interior of said cylindrical body and secured in place by welding, a fastener having threads configured for engagement with said first threaded nut for securing the exhaust enhancement device inside the motorcycle exhaust pipe, a second hole formed in said cylindrical body, a second threaded nut positioned over said second hole on the interior of said cylindrical body and secured in place by welding, and an anti-reversion piece threaded into said second threaded nut and projecting into the interior of the tubular cylindrical body, the anti-reversion piece comprising a threaded shaft and a washer welded to said shaft, wherein said second hole is formed in one of said end portions, and including a third hole formed in the other one of said end portions of said cylindrical body, a third threaded nut positioned over said third hole on the interior of said cylindrical body and secured in place by welding, and an additional anti-reversion piece threaded into said third threaded nut and projecting into the interior of the tubular cylindrical body.
11. A motorcycle exhaust system comprising an exhaust pipe having an exit end, and an exhaust enhancement device mounted in said exhaust pipe adjacent the exit end thereof, said exhaust enhancement device comprising a tubular cylindrical body formed of steel tubing, said body having cylindrical end portions of substantially uniform diameter joined by an integral central portion of substantially uniform diameter, a first hole formed in said cylindrical body, a first threaded nut positioned over said hole on the interior of said cylindrical body and secured in place by welding, a threaded fastener extending through said exhaust pipe and threaded into said first threaded nut for securing the exhaust enhancement device inside the motorcycle exhaust pipe, a second hole formed in said cylindrical body, a second threaded nut positioned over said second hole on the interior of said cylindrical body and secured in place by welding, and an anti-reversion piece threaded into said second threaded nut and projecting inwardly into the interior of the tubular cylindrical body to at least the center of the tubular bode and into path of exhaust gases therethrough.
12. The system of claim 11, wherein said anti-reversion piece comprises a threaded shaft and a washer welded to said shaft.
13. A motorcycle exhaust system comprising an exhaust pipe having an exit end, and an exhaust enhancement device mounted in said exhaust pipe adjacent the exit end thereof, said exhaust enhancement device comprising a tubular cylindrical body formed of steel tubing, said body having cylindrical end portions of substantially uniform diameter joined by an integral reduced diameter portion of substantially uniform diameter, a first hole formed in said cylindrical body, a first threaded nut positioned over said hole on the interior of said cylindrical body and secured in place by welding, a threaded fastener extending through said exhaust pipe and threaded into said first threaded nut for securing the exhaust enhancement device inside the motorcycle exhaust pipe, a second hole formed in said cylindrical body, a second threaded nut positioned over said second hole on the interior of said cylindrical body and secured in place by welding, and an anti-reversion piece threaded into said second threaded nut and projecting into the interior of the tubular cylindrical body the anti-reversion piece comprising a threaded shaft and a washer welded to said shaft, wherein said second hole is formed in one of said end portions, and including a third hole formed in the other one of said end portions of said cylindrical body, a third threaded nut positioned over said third hole on the interior of said cylindrical body and secured in place by welding, and an additional anti-reversion piece threaded into said third threaded nut and projecting into the interior of the tubular cylindrical body.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A saw comprising:
a base;
a rotatable table for supporting a workpiece, the table being rotatably disposed on the base;
a saw assembly rotatably connected to the table, the saw assembly comprising a motor and a blade driven by the motor, the blade being movable along a cutting plane;
a fence assembly comprising a first fence disposed to the left of the blade and attached to the base via a first screw, the first fence defining a fence plane, a second fence disposed to the right of the blade and attached to the base via a second screw, the first and second fences defining a gap therebetween and being connected via a central portion disposed behind the gap and disposed between the first and second screws and at least partly above the table, the central portion having a protrusion extending substantially rearwardly and at least partly above the table for attaching the central portion being attached to the base at an attachment portion which is disposed behind the gap and is intersected by the cutting plane, so that a distance between the attachment portion and the fence plane is larger than a distance between the first screw and the fence plane.
2. The saw of claim 1, wherein the central portion is attached to the base via a third screw.
3. The saw of claim 1, wherein the saw assembly is movable towards the fence assembly.
4. The saw of claim 1, wherein the base has notches.
5. The saw of claim 4, wherein the notches receive a detent for determining the rotational position of the table relative to the base.
6. The saw of claim 1, wherein the saw assembly contacts a first rail.