Abstract: A firearm silencer includes a first cylindrical body section formed as a single unit having a first inner bore and a receiving end having a first axial bore, and a second cylindrical body section formed as a single unit having a second inner bore and a discharge end having a second axial bore. The first cylindrical body section is joined to the second cylindrical body section to form a cylindrical body. A plurality of baffles disposed within the cylindrical body, each baffle having a baffle axial bore.

Abstract: A baffle for a weapon silencer includes an annular wall that defines an axial passageway. The annular wall defines a first section located adjacent to a first axial end and in which the diameter of the axial passageway increases from a smallest diameter adjacent to the first axial end to a largest diameter. The annular wall defines a second section having a spiraled vane is formed on an exterior surface of the annular wall. The annular wall defines a third section that is located adjacent to the second axial end, the third section having a plurality of ports that extend radially through the annular wall to allow communication between the axial passageway and an exterior.

Abstract: A firearm muzzle silencer includes an elongated cylindrical body having a cylindrical bore, a firearm mounting end, and a projectile discharge end. At least one helical insert is positioned in the cylindrical bore and proximate to the firearm mounting end. The helical insert has an insert axial bore that extends through the helical insert and a spiral groove formed on an exterior of the helical insert to define a spiral path between the helical insert and the cylindrical bore. A chamber is defined in the elongated cylindrical body adjacent to the helical insert, and the helical insert is positioned between the chamber and the firearm mounting end. A plurality of ports is formed in the elongated cylindrical body adjacent to the spiral path, wherein the plurality of ports is in communication with the chamber via the spiral path.

Abstract: A firearm muzzle silencer includes an elongated cylindrical body having a cylindrical bore, a firearm mounting end, and a projectile discharge end. At least one helical insert is positioned in the cylindrical bore and proximate to the firearm mounting end. The helical insert has an insert axial bore that extends through the helical insert and a spiral groove formed on an exterior of the helical insert to define a spiral path between the helical insert and the cylindrical bore. A chamber is defined in the elongated cylindrical body adjacent to the helical insert, wherein the helical insert is positioned between adjacent to the helical insert and the helical insert is positioned between the chamber and the firearm mounting end. A plurality of ports is formed in the elongated cylindrical body adjacent to the spiral path, wherein the plurality of ports is in communication with the chamber via the spiral path.

Abstract: A baffle for a weapon silencer includes an annular wall that defines an axial passageway. The annular wall defines a first section located adjacent to a first axial end and in which the diameter of the axial passageway increases from a smallest diameter adjacent to the first axial end to a largest diameter. The annular wall defines a second section having a spiraled vane is formed on an exterior surface of the annular wall. The annular wall defines a third section that is located adjacent to the second axial end, the third section having a plurality of ports that extend radially through the annular wall to allow communication between the axial passageway and an exterior.

Abstract: A firearm silencer includes a first cylindrical body section formed as a single unit having a first inner bore and a receiving end having a first axial bore, and a second cylindrical body section formed as a single unit having a second inner bore and a discharge end having a second axial bore. The first cylindrical body section is joined to the second cylindrical body section to form a cylindrical body. A plurality of baffles disposed within the cylindrical body, each baffle having a baffle axial bore.

Abstract: A toothbrush which includes a toothbrush body (12) and a lever arm (14) having toothbrush bristles (18) at one end thereof. The lever arm (14) is mounted for pivotal movement at a pivot member (16) which is in the vicinity of the other end of the lever arm (14). In one embodiment, a pair of permanent magnets (44, 46) are provided at the other end of the lever arm (14), positioned side-by-side with opposite polarities. An electromagnet (24) is provided to the rear of the lever arm (14). The electromagnet (24) includes an E-core having top, bottom and center legs (30, 31, 33) with a coil (36) wound around its center leg (33) which receives an alternating current driving signal from an oscillator/battery section (38). The frequency of operation is in the range of 150-400 Hz. The action of the alternating current in the electromagnet (24) causes the lever arm (14) to move about the pivot member (16), first in one direction and then in an opposing direction to provide the desired vibrating effect.