Abstract: An electric toothbrush is disclosed comprising a body, a head, and a neck extending therebetween. A motor, drive train, and one or more batteries impart motion to the collection of movable bristles. A spring component is provided in the drive train that is configured to absorb excessive loads that would otherwise be transmitted to the motor. Reducing or eliminating application of such excessive loads on the motor extends battery life.

Abstract: An electric toothbrush having movable and static carriers which independently slidingly engage the receiving member of the toothbrush head within channels defined by the surfaces of the receiving member. Such carriers can be releasably removable to replace or exchange the carriers. Also disclosed is a toothbrush having a unique assembly utilizing a one-piece housing in combination with a movable bristle carrier that is engaged on a receiving member located at the distal end of the toothbrush, and a static carrier such as a brush head tip which is secured thereto. The unitary housing reduces the number of components of the toothbrush and decreases manufacturing costs. The static and movable carriers may be replaced with other carriers and allows a consumer to individually tailor the brush to provide a particular brushing configuration. An electric toothbrush having a particular assembly, bristle configuration, and drive mechanism is disclosed.

Abstract: An electric toothbrush comprising a handle, a head, and a neck extending between the handle and the head. The electric toothbrush has a longitudinal axis. The handle has a hollow interior region, and has a motor disposed within the hollow region. The movable bristle holder is disposed on the head, and has a plurality of movable bristles disposed thereon. The drive shaft operatively connects the motor to the movable bristle holder to move the movable bristle holder and the bristles disposed on the movable bristle holder. The head has bristles disposed thereon. One or more bristles are disposed on a static portion of the head of the toothbrush. Movement of the drive shaft and/or the movable bristle holder results in movement of at least a portion of the one or more bristles disposed on the static portion of the toothbrush head.

Abstract: An actuator assembly and packaging feature for an electric toothbrush is disclosed. The actuator assembly includes a positionable member accessible along the outer surface of the toothbrush body. The actuator assembly further includes a spring member retained within the interior of the toothbrush body which urges a cam member against the underside of the positionable member. The positionable member defines an aperture extending through its midsection within which is disposed a depressible member. The depressible member has an outer end which is also accessible along the outer surface of the toothbrush body. Upon pressing the depressible member, the cam member and spring are urged against an electrical circuit provided within the body of the toothbrush which is used to selectively operate a motor and drive mechanism to move one or more sets of bristles.

Abstract: An electric toothbrush comprises a body portion and a head including a motor, a moving portion, a handle, and a gear arrangement between the moving portion and the motor. The moving portion rotates, oscillates and/or reciprocates about an axis normal to a longitudinal axis of the head. The moving portion can include stiff bristles and massaging tips and the static portion can include soft bristles and massaging tips. The body portion houses the motor. A switch is operatively connected to the motor to provide momentary or continuous operation of the toothbrush. In one embodiment the gear arrangement includes a shaft, a worm gear and a pair of step gears. In another embodiment the gear arrangement includes a plurality of gears and at least one swivel arm for drive the moving portion in a rotating, oscillating or reciprocating manner.

Abstract: An improved housing for an electric toothbrush is disclosed. The improved housing provides two symmetrically positioned gripping members which assist the user in grasping the toothbrush particularly during brushing. Each of the gripping members includes a recessed gripping region having particular dimensional characteristics. The two gripping members are symmetrically arranged on the rearward sides of the toothbrush so that the brush may be used by both left-handed and right-handed individuals. A third gripping member may also be provided along the housing of the toothbrush.

Abstract: An electric toothbrush is provided. The electric toothbrush includes a handle having a motor disposed therein, a head having a longitudinal axis, and a neck disposed between the handle and the head. First and second bristle holders are associated with the head. The first bristle holder oscillates or rotates. The second bristle holder is reciprocates in generally the same direction as the longitudinal axis of the head but does not rotate or oscillate. The motor is operatively connected to the first and second bristle holders.

Abstract: A pneumatic projectile discharging device uses cylinders of compressed gas for unloading or removing obstructions from the barrel of muzzle-loading guns. The device includes a valve body, a hollow handle piece, an adapter and a plurality of actuators which allow the device to be used on various types of guns. One end of the valve body is equipped with means for providing an airtight seal with the cylinder and means for piercing the end of the cylinder to release the gas. The cylinder of compressed gas is enclosed by the hollow handle piece which is detachably connected to the valve body and is provided with means for advancing the cylinder causing the end thereof to be pierced by the piercing means. The valve body houses a valve to selectively release the gas from the cylinder through a connecting passage. The upper portion of the valve body is provided with the adapter for sealing to the nipple or vent in the breech of a muzzle-loading gun.

Abstract: A method and apparatus for measuring experimental quantities utilizes a self-contained ink jet impactless timing device including an ink jet head employing a timing circuit to provide a precisely timed ink dot stream. In utilizing the present invention, relative movement is initiated between the ink jet device in indicia receiving medium, generally ticker-tape paper, producing a dot pattern on the indicia receiving medium. The dot pattern, so produced, can be reviewed to obtain the experimental results. The invention can be utilized in various ways to measure the acceleration due to gravity, velocities, momentum, linear acceleration, period of a pendulum, motion of a spring, etc.

Abstract: A survival belt buckle is provided with a compartment for retaining a multiplicity of items for aiding in the survival of the user in wilderness areas and the like. A knife blade is dimensionally sized to fit within the compartment and is releasably attachable to a portion of the survival belt buckle to permit the buckle to act as a handle therefor. The survival belt buckle includes indicia associated therewith providing a basic description of survival techniques and skills allowing the buckle to be used with maximum efficiency by inexperienced persons.

Abstract: A conventional rural mailbox has a slidable tray insert therein molded from a plastic material exhibiting natural flexural characteristics with a generally rectangular configuration defined by a bottom wall with a pair of side walls and an end wall extending upwardly therefrom. The bottom wall has a handle inclined upwardly therefrom and spaced from the side walls and end wall. The handle is operatively connected to the bottom wall by a flexible live hinge permitting relative movement therebetween. Each of the side walls include a flexible finger element thereon for centrally locating the tray insert within the mailbox and limiting relative sliding movement therebetween. The end wall has a rearwardly inclined resilient semicircular member thereon for moving the tray insert partially out of the mailbox to expose the handle when the mailbox is opened and for maintaining the tray insert in a level position when it is fully extended from the mailbox.