A rotating painting apparatus includes a plurality of painting stations rotatably mounted to a base plate and each station having 2, 3, 4, or more faces on which to apply paint. A painting station includes a drive shaft rotatably coupled to the base plate. Rotation of the drive shaft causes the painting station to swivel, i.e., to rotate. The stretched frame member includes upstanding side support members extending from the bottom wall and about which a length of canvas may be stretched to form a painting station having two faces (front and rear), three faces (triangular), or four faces (cube), and so on. A chain drive operated by a drive motor enables all of the frame assemblies to be rotated together. The apparatus may include a motion sensor operable to actuate the motor and drive shaft to cause rotation when motion is detected.

A mechanical system with a double-sided chain, composed of a driving wheel (S1), a tensioner wheel (S2) for the chain (1), a driven wheel (S3) and a chain (1), which winds around the wheels (S1) and (S2), and engages the wheel (S3) on its outer side, characterized in that the wheel centres (S1), (S2) and (S3) are not collinear, whereas the position of wheel axis (S2) in relation to wheel axis (S1) and (S3) determines the line of operation of chain (1) and determines the optimal angle alpha between the direction of the force vector F and the perpendicular to the straight line joining the centres of tensioner wheel (S2) and driven wheel (S3), and passing through point (B) where force F1 is applied. while the value of the angle alpha is equal 15 degrees.

A connection rod coupling assembly includes a settable shape mounting second component having a lateral, primary axis and a bearing assembly including a bearing assembly body. The bearing assembly body includes a substantially cylindrical outer surface and a center axis. The bearing assembly body is coupled to the settable shape mounting second component in a non-aligned configuration. That is, the bearing assembly body center axis is offset from the settable shape mounting second component primary axis. Thus, the position of the bearing assembly body center axis is adjustable by repositioning the settable shape mounting second component relative to a settable shape mounting first component on a swing lever. The adjustment of the bearing assembly body, in turn, adjusts the range of the ram assembly and the ram assembly body.

A chain tensioning device is adapted to be coupled to a vehicle body and to be adjacent to a chain, and includes a connecting segment, a metallic resilient segment, a fixing member and a guiding member. The connecting segment includes a securing portion adapted to be coupled to the vehicle body and an extending portion adapted to be under the chain. The resilient segment is connected to the extending portion of the connecting segment via the fixing member, and has a spring constant which ranges from 0.01 to 1000 N/mm, and a Young's modulus which ranges from 69 to 220 megapascals. The guiding member is connected to the resilient segment and is biased by the resilient segment for maintaining a tension of the chain.

A belt tensioning system is described, which comprises: a housing pivotable about a pivot point; a pulley supported by said housing, said pulley to rotate a belt and said pulley rotatable about an axis of rotation; a motor to drive the pulley; and a biasing element coupled to said housing and to apply a tension to said belt via said housing and said pulley; wherein operation of said motor to effect rotation of said pulley about said axis of rotation: in a first direction effects pivoting of said housing in a direction about said pivot point, which pivoting movement, in combination with said biasing element, effects translational movement of said axis of rotation of said pulley in a first translational direction to a first axis position to alter said tension in said belt; and in a second direction effects pivoting of said housing in an opposite direction about said pivot point, which pivoting movement, in combination with said biasing element, effects translational movement of said axis of rotation of said pulley in a second translational direction to a second axis position to alter said tension in said belt.

A coupling system can include an energy transfer device and a load mitigation system. The energy transfer device can include a shaft, gear, chain or piston-cylinder arrangement to transfer the energy from a power supply to an object to be moved. The load mitigation system can be used to limit or prevent the transfer of forces from the object to the drive unit as a result of external loads being applied to the object. The load mitigation system can be pre-loaded such that external loads on the object having an excessive impulsive or resonant cyclic force greater than the pre-load force on the load mitigation system are reduced and only partially transferred to the energy transfer device and power supply. The load mitigation system can dampen both resonant loads and impulsive impact loads occurring at the object thereby preventing damage and extending life.

A manual drive assembly for a manually-operated window treatment based on a drive chain formed as a loop, may incorporate one or more intermediate tensioners disposed between two ends of the loop. The loop may be formed between a manual clutch mechanism coupled to the window treatment and an end tensioner. The one or more intermediate tensioners may serve to limit slack in the loop such that sides of the loop cannot be pulled to create a large loop, for example, having a gap of four inches or greater, between the hanging sides of the cord.

The invention relates to a belt drive (24) with (a) a first pulley wheel (12) in the form of a drive sprocket with drive teeth (16), (b) a second pulley wheel in the form of an output sprocket (18) and (c) a toothed belt (22) that (i) connects the drive sprocket (12) and the output sprocket (18) for transmitting a force and (ii) has a belt back (38) and (iii) a plurality of teeth (34), wherein a tooth base (36) is situated between two adjacent teeth. According to the invention, (d) the toothed belt (22) comprises a plurality of recesses (26), each of which is configured in a tooth base (36), and (e) at least one pulley wheel features guide projections (28) for engaging in the recesses (26).

A connection rod coupling assembly includes a settable shape mounting second component having a lateral, primary axis and a bearing assembly including a bearing assembly body. The bearing assembly body includes a substantially cylindrical outer surface and a center axis. The bearing assembly body is coupled to the settable shape mounting second component in a non-aligned configuration. That is, the bearing assembly body center axis is offset from the settable shape mounting second component primary axis. Thus, the position of the bearing assembly body center axis is adjustable by repositioning the settable shape mounting second component relative to a settable shape mounting first component on a swing lever. The adjustment of the bearing assembly body, in turn, adjusts the range of the ram assembly and the ram assembly body.

To provide a sprocket that reduces the influence of tension fluctuations concurrent with load torque changes to suppress noise and vibration and that allows for a weight reduction while retaining high strength as well as enables high productivity, and a drive mechanism that uses this sprocket. Sprocket teeth are configured by providing a cushioning layer on tooth faces of tooth portions of a sprocket base body made of a high-rigidity material. The sprocket teeth include the cushioning layer that varies in thickness.