Abstract:
A drive mechanism for a vehicle is disclosed, said drive mechanism converting the reciprocating clockwise-counterclockwise motion of an input shaft into continuous rotation of an output shaft by means of two one-way clutches mechanically coupled to the input shaft and the output shaft, said one-way clutches having their power stroke in opposite directions of rotation. In an embodiment, said drive mechanism can be contained in a wheel hub and used for human-powered vehicles such as scooters, bicycles, wheelchairs, rollerskates, or other vehicles.
Abstract:
A push-pull chain (1) that can bend in one direction only, and is provided with at least two rollers (12,13) on each of the driving pins, one of the rollers (12) engages a drive sprocket (29) and the other of said at least two rollers (13) engages a chain guide surface (28). An actuator (20) for e.g. opening and closing a window that uses this dual-roller push-pull chain. A link (105) driven push-pull chain (101) that can bend in one direction only, with links (105) that is shaped as an engagement surface for engaging a drive sprocket (129). An actuator (120) for e.g. opening and closing a window that uses the link driven push-pull chain.
Abstract:
A robotic arm for transporting products in a product storage and dispensing system is disclosed. The robotic arm broadly includes a base operable to couple the arm to the dispensing system; a sprocket coupled with the base; an extendible arm segment coupled with the base; and a chain coupled with the sprocket and the extendible arm segment such that rotation of the sprocket causes movement of the chain and extension of the extendible arm segment. The robotic arm provides a compact and effective retrieval tool that is compatible with closely spaced and densely packed product shelves.
Abstract:
The present invention which discloses a device (1) for the transfer of a load (60) from a carrier onto a machine-tool supporting table and vice versa, is simple, inexpensive, very compact and of moderate weight. The transfer device consists of at least one handling arm (2) hinged and connected to the carrier and to the said load. The handling arm (2) is split into a front member (4) and a rear member (3) connected by a hinge. The closing and opening movement of the arm (2) is controlled by a jack (11) provided on the rear member (3) and its shaft is secured to a chain (12) intermeshing with two toothed wheels (14, 15) provided on the respective hinges (5, 6). The toothed wheels (14, 15) being stationary, the front (4) and rear (3) members of the arm rotate synchronously and in a ratio of 2 in relation to the jack (11), while the free end (7) of the arm follows a substantially rectilinear path parallel to the load transfer plane. The invention is useful in machine-tools, presses and any load transfer equipment.
Abstract:
A device for moving a support (2) for shelves (19), cupboards, tables or similar along a path, which support (2) is suspended in arm (1) that is pivotally connected to a base (9) about an axis of rotation (6) at one end of the arm (1), comprising: a load transmission means (13), for example a cogwheel, at the axis of rotation (6), which is connected to the base (9), at least one rotating means (16), for example a cogwheel, pivotally mounted on the arm (1) spaced apart from the load transmission means (13), an elongate rotation transmission means (14), for example an endless chain, which extends at least from the load transmission means (13) to the rotating means (16), the rotating means (16) being connected to the support (2), so that when the arm (1) is turned about the axis of rotation (6) the load transmission means (13) transmits the relative rotational movement between the arm (1) and the load transmission means (13) via the rotation transmission means (14) to the rotating means (16), so that the position of the support (2) is controlled dependent upon the position of the arm (1). Thus, it is possible to hold, say, a shelf (19) or a cupboard in the same position relative to the vertical plane whilst it is being raised and lowered.
Abstract:
The transmission comprises two sheave pulleys (12, 13) arranged on either side of a driving toothed wheel (14) and maintaining a toothed belt (11) in close contact with a toothed-bar rack (10) so that a section (D) of negligible length of the toothed belt (11) is not in full transmission relationship.
Abstract:
A push-pull chain actuator (1) comprises a housing with a chain exit/entry opening (4) and a sprocket (2) arranged to engage a push-pull chain (3). The sprocket (2) causes the polygon effect. The actuator comprises a first chain guide part (10a) for guiding said push-pull chain (3) around the sprocket (2) and a second chain guide part (10b) for guiding said push-pull chain (3) at a correct angle between the chain exit/entry opening (4) and the sprocket (2). The second chain guide part (10b) is shaped as a meandering path to counteract the polygon effect. Alternatively, the second chain guide part (10b) can be shaped and dimensioned to reduce chain oscillations caused by the rollers (8c) engaging or disengaging the chain exit/entry opening (4) at the end of the second chain guide part (10b).
Abstract:
A bicycle according to the present invention comprises of a steering axis (5) and an axle of rear wheel (2) that are attached in one unit with a frame (3) to build a form; a pair of guide members (11a, 11b) with guide holes (13a, 13b) formed therein are attached to both cut ends of the frame; a pedal axle (10) with the attachment of pedals (12a, 12b) and a rotating gear (21) in a unit are respectively assembled and fixed onto the guide members; the bicycle according to the present invention comprises a crankshaft (20) of which a pair of crank cams (22a, 22b) is assembled and fixed into both cut ends of the frame; a gear (31) which engages with the gear (21); and a spindle (30) which supports a unit of the gear (31) and a sprocket (32) to rotate; the bicycle according to the present invention is run by a running system in which the crank cam rotates when the pedals are recip rocated up and down.
Abstract:
A transmission (26) for reducing the pulley ratio between a drive shaft (42) and a transmission shaft (66) is disclosed. The transmission (26) is adapted to convert a higher speed rotary motion to a lower speed linear motion. The transmission (26) has two pulleys (30, 32) rigidly mounted together on a shaft (66) and the pulleys (30, 32) have a different number of teeth. A pair of belts (36, 38) are mounted on the drive shaft (42) and a transmission shaft (66) engages a pulley (32) on the top (86) of a first transmission pulley (32) and another on the bottom (84) of a second transmission pulley (30). When the drive shaft (42) imparts motion to the belts (36, 38), the belts (36, 38) move the transmission between the drive shaft (42) and the follower shaft (44). By arresting the movement of one of the belts (36, 38) by a clutch/brake (140), the transmission (26) can be converted into a two speed transmission. If the belts (36, 38) are independently driven, one each by two motors (150, 154), the transmission (26) becomes operable in an infinite number of pulley ratios. One particular application for this pulley transmission (26) is in a carriage drive system for a Coordinate Measuring Machine.