Abstract: An oral hygiene device is disclosed having at least two motors to simultaneously vibrate and impart motion upon the head portion of the oral hygiene device, most beneficially at the tip. A first motor is positioned in the handle portion of the device to impart a first frequency of movement to the tip. A second motor is located in a head portion, generally in a shaft of or an oral hygiene attachment to the device, to impart at least a second frequency of movement onto the tip. When both the first and second motors are activated, the resulting movement of the tip of the device may include complex, substantially random movements, depending in part on the frequencies at which the motors are operating.

Abstract: An oral hygiene device (2) is disclosed having at least two motors (30, 36) to simultaneously vibrate and impart motion upon the head portion of the oral hygiene device (2), most beneficially at the tip (12). A first motor (30) is positioned in the handle housing (3) of the device (2) to impart a first frequency of movement to the tip (12). A second motor (36) is located in a head portion, generally in a shaft (8) of or an oral hygiene attachment to the device (2), to impart at least a second frequency of movement onto the tip (12). When both the first and second motors (30, 36) are activated, the resulting movement of the tip (12) of the device (2) may include complex, substantially random movements, depending in part on the frequencies at which the motors (30, 36) are operating.

Abstract: An oral hygiene device is disclosed having at least two motors to simultaneously vibrate and impart motion upon the head portion of the oral hygiene device, most beneficially at the tip. A first motor is positioned in the handle portion of the device to impart a first frequency of movement to the tip. A second motor is located in a head portion, generally in a shaft of or an oral hygiene attachment to the device, to impart at least a second frequency of movement onto the tip. When both the first and second motors are activated, the resulting movement of the tip of the device may include complex, substantially random movements, depending in part on the frequencies at which the motors are operating.

Abstract: An oral hygiene device (2) is disclosed having at least two motors (30, 36) to simultaneously vibrate and impart motion upon the head portion of the oral hygiene device (2), most beneficially at the tip (12). A first motor (30) is positioned in the handle housing (3) of the device (2) to impart a first frequency of movement to the tip (12). A second motor (36) is located in a head portion, generally in a shaft (8) of or an oral hygiene attachment to the device (2), to impart at least a second frequency of movement onto the tip (12). When both the first and second motors (30, 36) are activated, the resulting movement of the tip (12) of the device (2) may include complex, substantially random movements, depending in part on the frequencies at which the motors (30, 36) are operating.

Abstract: A system for recovering hot-melt materials for reuse in a glue gun includes a flexible mold form mounted in a carrier and having an internal cavity that approximates the dimensions of the preformed hot-melt sticks. In order to change from one type hot-melt material to another, the sticks of the desired material are loaded into the gun while the heated, hot-melt material in the gun is discharged into the mold form. The hot-melt material flows into the mold form and assumes the shape of a conventional preformed stick. After cooling and solidification of the material, the mold form is removed from its carrier and the cooled, cast stick is removed from the mold form for reuse. The mold form is fabricated from a flexible, heat-resistant material, such as a silicone rubber, and includes an elongated tubular portion having a tapered exterior to facilitate removal from its carrier and an internal bore dimensioned to produce a cast stick having the dimensions of the preformed stick.