Abstract: A motor-powered toothbrush has a drive generating a reciprocating rotary movement, and a toothbrush attachment element, including a holding element connected to the drive and a head for acting on a teeth of a user, the holding element obtaining the reciprocating rotary movement from the drive and transmitting it to the head so that the head performs the reciprocating rotary movement, the head having a circular outer surface, so that after cleaning one group of teeth, when a user then applies the head to another group of teeth it is not necessary to orient a portion of the head in correspondence with the other group of teeth.

Abstract: Compressed air is fed from a pressurized reservoir (5) thru a nozzle/vortex unit (1) simultaneously drawing ambient air through an air filter element (10). The air mixes in a merging plenum (7) where air-charge multiplication occurs resulting in boost or positive pressure conditions. The positive pressure introduced to the intake air of the engine results in a higher cylinder combustion compression ratio. The increase compression ratio with proper air to fuel ratio results in an increase in horsepower and torque. Air is controlled by a computer (6), regulators, solenoids, micro-switches, and nozzle configurations. Air is supplied via reservoir (5) and replenished from mechanical or electric air pumps (FIG. 3 18s, 18b, 18c, 18d). Alternative fuels/gases can be added such as nitrous oxide or propane (3, 4). In diesel engine applications (FIG. 3), the power and torque increases can also be experienced, but also reduce emission levels at low rpm or idle mode conditions.

Abstract: A mechanically-driven toothbrush consists of a handle, which contains a driving motor with a conversion mechanism, and a toothbrush attachment removably connectable to the output shaft of the conversion mechanism. The handle with the conversion mechanism and the drive motor may comprise a standard, commercially produced unit with the output end of the conversion mechanism performing alternating rotary movements. The toothbrush attachment is made in the form of a conventional toothbrush head without any angular transmission. The tail of the head is connected with the output end of the conversion mechanism by a coupling, which has a locking element for engagement with an appropriate connection element on the output end of the conversion mechanism. The connection portion is covered by a protective sleeve that can be removably connected to the front end of the handle. In operation, the user moves the toothbrush up and down in the vertical directions of the teeth.

Abstract: A mechanically-driven toothbrush consists of a handle, which contains a driving motor with a conversion mechanism, and a toothbrush attachment removably connectable to the output shaft of the conversion mechanism. The handle with the conversion mechanism and the drive motor may comprise a standard, commercially produced unit with the output end of the conversion mechanism performing alternating rotary movements. The toothbrush attachment is made in the form of a conventional toothbrush head without any angular transmission. The tail of the head is connected with the output end of the conversion mechanism by a coupling, which has a locking element for engagement with an appropriate connection element on the output end of the conversion mechanism. The connection portion is covered by a protective sleeve that can be removably connected to the front end of the handle. In operation, the user moves the toothbrush up and down in the vertical directions of the teeth.