Embodiments of the present disclosure include a medical device. The medical device may include an elongate member, a first control member and a second control member each coupled to a distal end of the elongate member, an actuator coupled to the first control member and the second control member and configured to selectively move the first control member and the second control member to steer the elongate member, and a holding mechanism deflecting a path of the first control member from the actuator to the distal end of the elongate member and a path of the second control member from the actuator to the distal end of the elongate member. The holding mechanism may be configured to apply tension on one of the first control member and the second control member as the other is moved to steer the elongate member.

An automatic tensioning apparatus is provided that includes a tensioning drive unit having: a longitudinally extending stationary base frame with a plurality of guides extending between a lower portion and an upper portion, and a plurality of rotatable feed wheels axially secured at the lower portion, as well as a translatable drive frame slidably coupled to the plurality of guides with a drive assembly coupled to the drive frame, the drive assembly including a drive motor and a tensile member interface for engaging and rotationally translating a tensile member. The tensioning drive unit further including a plurality of drive frame actuators actuatable to move the drive frame between a bottom frame position and a top frame position, as well as a sensor for at least indirectly sensing the position of the drive frame along a longitudinal base frame axis.

A gear designed to be mounted on the frame or row of a corn header of the type consisting of a control box (8) on which two drive gears (6) and (7) are mounted that generate the linear movement at the lifting chains (1) and (2), which maintain their adequate tension by action of the pair of tensioning gears (9) and (10) that are arranged on respective bearings (12) mounted on the appropriate carrier arms (11), wherein each tensioning gear includes an annular step (16) adjacent to its upper face; wherein each tensioning gear includes a plastic deformation that defines a continuous circumferential line (17).

A translation movement device includes a guide, a long slider guided by the guide, and a belt driver displacing the slider; and the belt driver includes an open belt arranged parallel to the slider, a drive pulley for the open belt, and a tension bar arranged parallel to the open belt; and the tension bar is connected to the long slider at a middle position between two belt holders that hold respective end portions of the open belt.

Gear arrangement (14, 14a) with the following features: a drive body (16, 16a) with at least one drive-side drum (20, 22) arranged rotatably about a drive axis (18, 18a), a drive output body (24, 24a) with at least one output-side drum (28, 30) arranged rotatably about a drive output axis (26, 26a), at least one cable (32, 38), which can be wound on the at least one drive-side drum (20, 22) as well as on the at least one output-side drum (28, 30), and has a drive-side cable end (34, 40) as well as an output-side cable end (36, 42),
wherein the drive-side cable end (34, 40) is arranged on the at least one drive-side drum (20, 22) and the output-side cable end (36, 42) is arranged on the at least one output-side drum (28, 30), as well as robot (12) with a gear arrangement (14, 14a).

Provided is an actuator, preferably a linear actuator, including a carriage having a lateral support surface for supporting a first longitudinal section of a belt against lateral deflection and a space adjacent to and longitudinally offset from the lateral support surface for partially surrounding a second longitudinal section of the belt that is deflected relative to the lateral support surface to take up slack and/or tension the belt. By containing the slack within the carriage using the space and the lateral support surface, slack may be removed from the belt or the belt may be tensioned in an easy and cost efficient manner.

A multi-axial unidirectional power transmission system includes a transmission unit and a resistance unit. The transmission unit includes a first main shaft and a transmission wheel provided on the first main shaft. The resistance unit includes a second main shaft and a damping wheel mounted on the second main shaft. The two transmission wheels and the damping wheel can be placed flat on the body since they are mounted on different main shafts, thereby making the whole plane of the multi-axis unidirectional power transmission system consistent, thus achieving the effects of space saving, convenient storage and convenient transportation.

A resistance adjusting device for a non-pull cord window blind includes a base, a resistance adjusting seat, and a positioning pin. The base has a top hole, a pin hole, and a fixed shaft corresponding to the top hole. The resistance adjusting seat has a rotational shaft, and positioning holes and resistance adjusting rods arranged at intervals archedly relative to the rotational shaft. The resistance adjusting seat is rotatably sleeved onto the fixed shaft of the base by the rotational shaft, thereby able to adjust the friction resistance between the lift transmission cord and the resistance adjusting seat by one or a plurality of the resistance adjusting rods during rotation. The positioning pin is detachably disposed in the pin hole of the base and selectively inserted in one of the positioning holes of the resistance adjusting seat, to disable the resistance adjusting seat from rotating, thereby positioning it.

A resistance adjusting device for a non-pull cord window blind includes a base having a first positioning portion and a fixed shaft, a resistance adjusting seat sleeved onto the fixed shaft of the base by a transmission shaft, and a control pin sleeved onto the fixed shaft of the base by a driving shaft having a second positioning portion and a driving portion. When the second positioning portion is engaged with the first positioning portion, the control pin can't rotate, and the resistance of the lift transmission cord can't be adjusted. When the second positioning portion is separated from the first positioning portion and the driving portion of the driving shaft of the control pin is engaged with the transmission shaft of the resistance adjusting seat, the control pin can drive the resistance adjusting seat to adjust the resistance of the lift transmission cord.

A resistance adjusting device for a non-pull cord window blind includes a base having a first positioning portion and a fixed shaft, a resistance adjusting seat sleeved onto the fixed shaft of the base by a transmission shaft, and a control pin sleeved onto the fixed shaft of the base by a driving shaft having a second positioning portion and a driving portion. When the second positioning portion is engaged with the first positioning portion, the control pin can't rotate, and the resistance of the lift transmission cord can't be adjusted. When the second positioning portion is separated from the first positioning portion and the driving portion of the driving shaft of the control pin is engaged with the transmission shaft of the resistance adjusting seat, the control pin can drive the resistance adjusting seat to adjust the resistance of the lift transmission cord.