A product-dispensing device includes a housing, an actuator, and a time delay mechanism. The actuator is supported by the housing for rotation about a first axis. The time delay mechanism is operably coupled to the actuator and includes a first gear, a second gear, a damper, and a biasing member. The first gear is fixed for rotation with the actuator. The second gear is supported by the housing for rotation about a second axis and configured to engage the first gear. The first gear is operable to rotate the second gear in a first direction about the second axis. The biasing member is operable to rotate the second gear in a second direction about the second axis. The damper is operable to control a rate of rotation of the second gear in the second direction about the second axis. The second direction is opposite the first direction.

A product-dispensing device includes a housing, an actuator, and a time delay mechanism. The actuator is supported by the housing for rotation about a first axis. The time delay mechanism is operably coupled to the actuator and includes a first gear, a second gear, a damper, and a biasing member. The first gear is fixed for rotation with the actuator. The second gear is supported by the housing for rotation about a second axis and configured to engage the first gear. The first gear is operable to rotate the second gear in a first direction about the second axis. The biasing member is operable to rotate the second gear in a second direction about the second axis. The damper is operable to control a rate of rotation of the second gear in the second direction about the second axis. The second direction is opposite the first direction.

Various embodiments include an actuator comprising: a drive element; a transmission section; an actuating element; a mechanically active connection from the drive element to the actuating element through the transmission section; and a reset spring providing a closing force acting on the actuating element. The transmission section includes a drive gear wheel, a transmission gear wheel, and a take-off gear wheel. The transmission gear wheel includes a drive gear section and a take-off gear section. There is a first meshed engagement from the drive gear section through a first transmission function into the drive gear wheel and a second meshed engagement from the take-off gear section through a second transmission function into the take-off gear wheel. The first transmission function and the second transmission function are different. The drive gear wheel, the drive gear section, the take-off gear section, and the take-off gear wheel are arranged in one active plane.

A drive transmission apparatus includes a first rotating unit rotated by driving force from a drive source and a second rotating unit rotated by the first rotating unit. The first and second rotating units include a first gear pair meshing at a first transmission ratio and second gear pair meshing at a second transmission ratio. A retention mechanism includes a protruded portion provided on the first rotating unit and a recessed portion provided on the second rotating unit, and is configured to retain a rotation angle of the second rotating unit by an engagement of the protruded portion and the recessed portion in a state where the first and second gear pairs are unmeshed.

A drive transmission apparatus includes a first rotating unit rotated by driving force from a drive source and a second rotating unit rotated by the first rotating unit. The first and second rotating units include a first gear pair meshing at a first transmission ratio and second gear pair meshing at a second transmission ratio. A retention mechanism includes a protruded portion provided on the first rotating unit and a recessed portion provided on the second rotating unit, and is configured to retain a rotation angle of the second rotating unit by an engagement of the protruded portion and the recessed portion in a state where the first and second gear pairs are unmeshed.

In a gear comprising a resin material including a fibrous filler, a plurality of teeth formed at equal angular intervals are provided to a first outer peripheral part. When the gear is manufactured, the resin material is filled from a specific portion (first toothless part) which faces in a direction orthogonal to a center axis line, and in which the teeth are not formed in a portion that overlaps the first outer peripheral part when seen from the direction orthogonal to the center axis line. Therefore, there is a gate mark in the specific portion. Between the specific portion and the center axis line, the degree to which the filler is oriented in a direction intersecting the center axis line is higher than the degree to which the filler is oriented in a direction running along the center axis line.

In a gear comprising a resin material including a fibrous filler, a plurality of teeth formed at equal angular intervals are provided to a first outer peripheral part. When the gear is manufactured, the resin material is filled from a specific portion (first toothless part) which faces in a direction orthogonal to a center axis line, and in which the teeth are not formed in a portion that overlaps the first outer peripheral part when seen from the direction orthogonal to the center axis line. Therefore, there is a gate mark in the specific portion. Between the specific portion and the center axis line, the degree to which the filler is oriented in a direction intersecting the center axis line is higher than the degree to which the filler is oriented in a direction running along the center axis line.

The device comprises a shaft 4, a notched mobile memberfor example a wheel 1and at least three arms 2.1, 2.2, 2.3 that together transmit movement between the shaft 4 and the mobile member. Each arm is hinged to two eccentric bearings 3, 3 that hold same parallel to said arm, regardless of the rotational angle of the shaft 4 with which they rotate synchronously. Each arm engages with the notches of the wheel 1 during at least a portion of the cyclic motion of same, by means of at least one tooth 7 of the arm, in such a way as to ensure mutual displacement. The bearings 3, 3 are arranged such that at least one of the arms engages with the mobile member, regardless of the rotational angle of the shaft 4. Said device can be used for producing low-clearance speed reducers.

A gas ejection apparatus includes: a cylinder having a rotating member that rotates within the cylinder; a motor coupled to the rotating member of the cylinder and that causes gas to be compressed inside the cylinder and to he ejected from the cylinder by causing rotation of the rotating member; a control circuit board that controls the motor; and a case in which the cylinder, the motor and the control circuit board are disposed. The case extends in a planar direction and has side surfaces that are orthogonal to the planar direction. The motor and the cylinder are arranged adjacent to each other in the planar direction of the case. The control circuit board is disposed adjacent to and substantially parallel to one of the side surfaces of the case.

A gas ejection apparatus includes: a cylinder having a rotating member that rotates within the cylinder; a motor coupled to the rotating member of the cylinder and that causes gas to be compressed inside the cylinder and to he ejected from the cylinder by causing rotation of the rotating member; a control circuit board that controls the motor; and a case in which the cylinder, the motor and the control circuit board are disposed. The case extends in a planar direction and has side surfaces that are orthogonal to the planar direction. The motor and the cylinder are arranged adjacent to each other in the planar direction of the case. The control circuit board is disposed adjacent to and substantially parallel to one of the side surfaces of the case.