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 belt-driven linear module includes a tensioning assembly and a drive belt. The tensioning assembly includes a support shaft and a bearing. The support shaft is configured to be installed at a driven end of the linear module. The bearing includes an inner ring and an outer ring. The inner ring is positioned on the support shaft, and the outer ring is configured to be wrapped by the drive belt of the linear module so as to tension the drive belt of the linear module.

Slack-compensating pulleys, transmission systems including slack-compensating pulleys, and methods of operating these. In general, slack-compensating pulleys include a pulley body onto which a cable can wind, and one or more (e.g., two) slack take-up surfaces that rotate with the pulley body that are configured to remove slack form an outgoing length of cable by increasing the cable path length and wrap angle. In particular, described herein are minimal access tools having slack-compensating transmissions.

A cable-operated mechanism for actuating a slide-out room includes a column, an endless chain loop disposed with the column, first and second drive blocks engaged with the chain loop, and first through fourth cables attached at first ends thereof to the drive blocks. The cables are attached at second ends thereof to inboard and outboard ends of a slide out room. Operation of the chain loop in a first direction tensions the cables attached to the inboard end of the room and slackens the cables attached to the outboard end. Operation of the chain loop in a second direction has the opposite effect.

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.

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.

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 cable cylinder (100) comprising a frame (1);a pin (2) mounted on the frame and extending along a first axis (Oy);a nut (4) engaging with the pin (2);a first cable (10) coupled to the nut or the pin (2) and intended to be functionally connected to an element to be moved;a motor (3) designed to rotate the pin (2) or the nut (4); characterised in that the first cable (6) comprises at least a first section (6.1) extending substantially parallel to the first axis (Ox), and the first cable (6) is designed to exert opposing forces on rotation of the nut (4) by the pin (2) or of the pin (2) by the nut (4) in order to constitute anti-rotation means so that a rotation of the pin (2) or of the bolt (4) under the action of the motor (3) causes a relative movement of the nut (4) and of the pin (2).

A driving device is used in an image reading apparatus, and reciprocates a scanning unit for reading an image on an original. The driving device comprises a pull member, a driving pulley which transmits driving force to the pull member, a following pulley which applies tension to the pull member and a pulley holder having a pulley axis which holds the following pulley rotatably. Then, the pulley axis has a lock pawl capable of locking an upper end portion of the following pulley and canceling engagement with the following pulley by being tilted toward a side of an axial center by elastic deformation. Furthermore, the lock pawl is arranged at a side of a tension acting direction from the pull member to the following pulley except the farthest position from the driving pulley among positions in a circumferential direction of the pulley axis. It is possible to attach and detach the following pulley easily at a time of maintenance or the like.