An operating mechanism is provided for a screen assembly having an elongate endless pull cord hanging from the screen assembly in a loop. The operating mechanism has a housing having an opening at an upper end thereof. At least a lower portion of the pull cord can pass into the housing to be enclosed therein. A guide means for guiding passage of the pull cord through the housing. The guide means has a locking means adapted to selectively restrain first or second sides of a loop defined by the pull cord. The guide means includes a cord-retaining member engaging a lower end of the looped pull cord. The cord-retaining member is moveable within the housing between vertically spaced first and second positions, the second position being above the first position, the cord-retaining member being biased towards the first position by biasing means. The housing may be displaced downwardly with respect to the pull cord by upward movement of the cord-retaining member between the positions against the force of the biasing means.

A handle of a load binder. The handle includes a handle gear housing having a front end opposite a rear end. An outer handle gear is rotatably coupled within the handle gear housing. At least one drill connector 16 is extending laterally from the handle gear housing and is operable to rotate the outer handle gear when driven. A handle grip protrudes from the rear end of the handle gear housing. A binder gear housing protrudes from the front end of the handle gear housing. The binder gear housing includes an outer wall and a sidewall extending inward from the outer wall. The sidewall has a U-shaped cutout. The U-shaped cutout releasably receives a binder stem of the load binder and positions the outer handle gear to interlock with a binder gear of the load binder.

A hand tool assembly includes a body having a ratchet portion, a room and a window. A driving unit is rotatably received in the ratchet portion and the room of the body. The driving unit includes a driving head, a pawl, a spring and a rotary member. The rotary member is rotated via the window to control the operational directions of the driving unit. A seat is connected to the body, and the driving unit is connected between the body and the seat. The seat includes an insertion portion formed on one end thereof, and which is engaged with the room. The seat has an engaging portion formed on the other end thereof. The seat is replaceable to make the hand tool assembly have more functions.

An antenna transmission apparatus includes: a housing including an upper cover and a lower cover, and an input shaft and at least two sets of output shafts that are rotatably mounted between the upper cover and the lower cover; and further includes a planetary gear position selection assembly and a unidirectional control assembly. Each set of output shafts includes an output shaft and an auxiliary shaft in transmission fit with the output shaft; the planetary gear position selection assembly includes a planetary gear; the unidirectional control assembly can control the planetary gear to implement position selection and positioning; and the position selection and bidirectional rotation output of the output shafts may be implemented by using only one motor. The antenna transmission apparatus of the present invention is simple in structure, light in weight, stable, and easy to operate.

A canopy assembly includes a canopy fabric, a plurality of tightening wires, and a fastening arrangement. The fastening arrangement includes a plurality of tension adjustment units. Each of the tension adjustment units includes a supporting frame, a ratchet gear, a main shaft connected to the ratchet gear and rotatably connected to the supporting frame, and a resilient locking member mounted on the supporting frame to move between a locked position and an unlocked position. In the locked position, the resilient locking member is pivotally moved to engage with the ratchet gear so as to limit the ratchet gear to incrementally rotate in one predetermined direction with respect to the supporting frame, When the resilient locking member is in the unlocked position, the resilient locking member is pivotally moved to disengage from the ratchet gear so as to allow the ratchet gear to freely rotate with respect to the supporting frame.

An oscillating reversible motor providing a novel means of converting oscillating motion into selectable clockwise or counterclockwise rotary motion. More particularly, the invention presents a novel approach to a foot or hand pedal driven apparatus with which a traditional rotary water propeller or other output device may be employed in both forward and reverse directions of relative motion.

A drive train for a treadle scooter using a locking roller clutch on each side of a drive wheel substantially equalizes drive line pull at actuation pulleys operatively associated with the locking roller clutches as a user pivots a rocker board having its ends attached to ends of the drive line.

An apparatus for outputting a solid material entrained in a fluid, the apparatus comprising a receptacle for receiving the solid material, an input for the fluid, an output for solid material, an auger for transporting the solid material from the receptacle to the output, a motor for driving the auger, wherein the motor comprises one or more cylinders each comprising a piston, a second input connected to the input so as to feed part of the fluid to the cylinders, where a cross section of a piston is at least 700 mm.sup.2 or wherein a drive transforming the reciprocating movement of each piston, relative to the cylinder, to rotation of the auger around the first axis, is configured to rotate the auger at least 20 degrees when a cylinder completes a cycle.

A reciprocating action drive for converting reciprocating linear motion to uni-directional rotational motion is disclosed. The reciprocating action drive has a lever arm connected to a drive shaft via a first overrunning clutch such that when the lever arm is rotated in a first direction of rotation by a reciprocating linear motion, the drive shaft is rotates in the same direction. A further overrunning clutch connects the drive shaft such that the drive shaft may rotate in the first direction with respect to the frame, but not in the second, opposite direction. Such an arrangement prevents the drive shaft being driven in the second opposite, direction with respect to the frame. This prevents the lever arms being driven to interfere with any connection they may have to a source of linear reciprocating motion, thereby avoiding damage to such a connection.

A reciprocating action drive having a magnetically sprung overrunning clutch with sprags that contain permanent magnets, is disclosed. The overrunning clutch has inner and outer shafts disposed to rotate about a common axis, and pivoting sprags that incorporate a permanent magnet, located between them. The sprags are shaped and sized, and located and sprung by magnetic attraction, such that the shafts rotate freely past each other in one direction, but lock together when attempted to be rotated in an opposite, lockup direction. A drive shaft is connected to either the inner or outer shaft of the overrunning clutch, and a lever arm is connected to the other shaft. When the lever arm is moved in a first rotational direction, the drive shaft is driven in that same direction. However, when the lever arm is moved in the opposite direction, the drive shaft is not driven as the overrunning clutch freewheels.