Abstract: A method for manufacturing a three-dimensional workpiece is provided. In this method, a ductile plate, a core layer and a prepreg are combined to form a sandwich structure. The core layer is located between the ductile plate and the prepreg. The sandwich structure is shaped to be the three-dimensional sandwich structure. The sandwich structure is heated to cure the prepreg.

Abstract: Disclosed is a method for making a tube for a telescopic device. The method includes the step of cutting a section from tubular raw material to provide a semi-product of the tube with a desired value of length, the step of pressing the wall of the semi-product of the tube for a first time to make cavities on an external side of the wall of the semi-product of the tube, and the step of pressing the wall of the semi-product of the tube for a second time to deepen the cavities so that the tube is made with a desired depth.

Abstract: A belt-tightening apparatus includes a frame, a handle, a shaft, two ratchet wheels, two spring-biased detents and a connector. The shaft is used to rotationally connect the handle to the frame and wind a first belt. The ratchet wheels are connected to the shaft. The first spring-biased detent is movably connected to the handle for engagement with the ratchet wheels. The second spring-biased detent is movably connected to the frame for engagement with the ratchet wheels. The connector includes a tube and a reinforcement strip. The tube is connected to the frame on one hand and connected to the second belt on the other hand. The reinforcement strip is inserted in the tube for reinforcing the tube.

Abstract: A strap-tightening device includes a frame, a handle connected to the frame and a reel located on the frame. A first detent is located on the frame. A second detent is located on the handle. The second detent includes two horns each including a downward prong and an upward prong. The reel includes a cylinder and two ratcheted wheels attached to the cylinder. The ratcheted wheels are engaged with the upward prongs of the horns of the second detent during pivoting of the handle in a direction to cause the cylinder to reel in a strap. The ratcheted wheels are engaged with the first detent during pivoting of the handle in an opposite direction to prevent the handle from spinning the cylinder to reel out the strap. A withdrawing unit spins the reel to withdraw the strap.

Abstract: A telescopic apparatus includes two tubes, a positioning unit and two contact units. The tubes are telescopically connected to each other. The positioning unit is operable for moving and positioning the tubes relative to each other. Each of the contact units includes a cap secured to a relative one of the tubes and a pad pivotally and elastically connected to the cap.

Abstract: A display assembly includes a post, a first shackle provided around the post, a second shackle provided around the post, and a suspension unit pivotally connected to the second shackle. The second shackle is elastically connected to the first shackle so that the first and second shackles are normally pivoted from each other and hence abutted against the post to position the first and second shackles on the post.

Abstract: A shell structure includes a composite material layer and a second material layer is provided. The composite material layer includes a woven layer and a first material layer. The woven layer has a first surface and a second surface opposite to each other. The first material layer is located on the first surface and has a plurality of through-holes. The second material layer is disposed on the first material layer and has a plurality of extending-portions adapted to be combined with the woven layer and fix the second material layer and the composite material layer to each other. In addition, a manufacturing method for shell structure of electronic device is also provided.

Abstract: A shell structure suitable for an electronic device is provided. The electronic device has a heat generating element. The shell structure includes a core layer, a first material layer, and a second material layer. The core layer includes a thermal insulating area and a thermal conducting area. The core layer has first and second surfaces opposite to each other. The first material layer is configured on the first surface. The second material layer is configured on the second surface. The thermal insulating area is aligned to the heat generating element, and the shell structure covers the heat generating element, such that heat generated by the heat generating element is transferred to the first material layer through the second material layer and the heat conducting area to perform heat dissipation, and a position of the first material layer aligned to the heat generating element is prevented from generating a heat point.

Abstract: A telescopic supportive apparatus includes an external tube, an internal tube, a mount, a toothed wheel, a handle, a first detent and a second detent. The internal tube is telescopically inserted in the external tube and formed with a series of recesses. The mount is secured to the external tube. The toothed wheel is supported on the mount and formed with teeth for insertion in the recesses. The handle is supported on the mount. The first detent is movably located on the mount and formed with a ratchet for engagement with the teeth. The second detent is movably located on the mount and formed with a ratchet for engagement with the teeth. The damping unit is located on the mount for damping the spinning of the toothed wheel and therefore the insertion of the internal tube into the external tube.

Abstract: A belt-tightening apparatus includes a frame, a handle, a shaft, two ratchet wheels, two spring-biased detents and a connector. The shaft is used to rotationally connect the handle to the frame and wind a first belt. The ratchet wheels are connected to the shaft. The first spring-biased detent is movably connected to the handle for engagement with the spring-biased detent wheels. The second spring-biased detent is movably connected to the frame for engagement with the spring-biased detent wheels. The connector includes a tube and a reinforcement strip. The tube is connected to the frame on one hand and connected to the second belt on the other hand. The reinforcement strip is inserted it in the tube for reinforcing the tube.

Abstract: A ratchet tie-down includes a frame, a lever including two cams pivotally connected to the frame, a reeling device rotatably mounted on the frame and lever, and a ratcheting device including two ratchet wheels mounted on the reeling device. The ratchet tie-down further includes a reinforcement assembly including two reinforcement members mounted on the reeling device. Each ratchet wheel includes two lateral sides disposed between one cam and one reinforcement member. Each reinforcement member defines an annular surface in contact with one lateral side of one ratchet wheel, and with the reinforcement member imposing an urging force in a direction perpendicular to a rotation direction of the ratchet wheel.

Abstract: A strap-tensioning apparatus includes a frame, a handle connected to the frame, a reel supported on the frame, two ratchets secured to the reel, a first detent supported on the handle and biased to engage with the ratchets, and a second detent supported on the frame and biased to engage with the ratchets. The frame includes two walls each including a recess. The handle includes two walls each including a lobe. The first detent includes a chamfered tip. The ratchets can slide on the chamfered tip of the first detent to allow a strap to be reeled out when the chamfered tip of the first detent is in the recesses of the frame. The second detent is disengaged from the ratchets by the lobes of the handle when the chamfered tip of the first detent is in the recesses of the walls of the frame.

Abstract: A tensioning apparatus is adapted to tension a strap. The tensioning apparatus includes a frame and a shaft rotatably installed on the frame. The strap is inserted through the shaft and includes first and second portions extending in opposite directions. A handle is pivotally connected to the frame and is operable to rotate the shaft and wind the strap on the shaft thereafter. The tensioning apparatus also include a reeling device and the second portion of the strap is adapted to be received and wound onto the reeling device.

Abstract: A fastener includes a frame; a rotary shaft mounted to the frame and having a passage running through a center thereof; two ratchet wheels, a first lock member; a handle pivoted to the rotary shaft; a second lock member movably mounted to the handle and having an operation portion for a user's hand to operate to force the second lock member to disengage from the ratchet wheels; a rewinding member mounted to the handle and having a reel, a spring coil, and a shell; and a strap having two ends, one of which is mounted to the rewinding member and the other passes through the passage, and are wound around the rewinding member. Accordingly, the fastener allows the user to conveniently rewind the strap to enhance the user's operational hand feel.

Abstract: A strap-tightening device includes a frame, a handle connected to the frame and a reel located on the frame. A first detent is located on the frame. A second detent is located on the handle. The second detent includes two horns each including a downward prong and an upward prong. The reel includes a cylinder and two ratcheted wheels attached to the cylinder. The ratcheted wheels are engaged with the upward prongs of the horns of the second detent during pivoting of the handle in a direction to cause the cylinder to reel in a strap. The ratcheted wheels are engaged with the first detent during pivoting of the handle in an opposite direction to prevent the handle from spinning the cylinder to reel out the strap. A withdrawing unit spins the reel to withdraw the strap.

Abstract: A telescopic device includes a first tube, a second tube in which the first tube is telescopically inserted, a third tube in which the second tube is telescopically inserted, a guiding unit for preventing rotation of the second tube in the third tube, a maneuvering unit for retaining the first tube in a desired position relative to the second tube, and a lock for locking the second tube in a desired position relative to the third tube.

Abstract: Disclosed is a method for making a tube for a telescopic device. The method includes the step of cutting a section from tubular raw material to provide a semi-product of the tube with a desired value of length, the step of pressing the wall of the semi-product of the tube for a first time to make cavities on an external side of the wall of the semi-product of the tube, and the step of pressing the wall of the semi-product of the tube for a second time to deepen the cavities so that the tube is made with a desired depth.

Abstract: A ratchet tie-down includes a frame, a lever including two cams pivotally connected to the frame, a reeling device rotatably mounted on the frame and lever, and a ratcheting device including two ratchet wheels mounted on the reeling device. The ratchet tie-down further includes a reinforcement assembly including two reinforcement members mounted on the reeling device. Each ratchet wheel includes two lateral sides disposed between one cam and one reinforcement member. Each reinforcement member defines an annular surface in contact with one lateral side of one ratchet wheel, and with the reinforcement member imposing an urging force in a direction perpendicular to a rotation direction of the ratchet wheel.

Abstract: A strap tensioning assembly includes a frame having two lateral walls and each of which includes a perimeter defining a first, a second, and a third engaging sections, an axle, and an automatic reeling device. A ratcheting device is mounted on and is rotatable with the axle and includes a ratchet wheel selectively engaged with a first detent as well as a brake mechanism. An operating device includes a pivotal end mounted on the axle and including a first, a second, and a third cams, and a locking member selectively engagable with the first, second and third engaging sections. The operating device is pivoted in the first engaging section in order to tension a strap, and is pivoted in the second engaging section in order to release a strap, and is adapted to be rotated by the automatic reeling device, and under or without resistance imposed by the braking mechanism.

Abstract: A tensioning apparatus includes a first shaft and a strap wound on the first shaft such that the strap has first and second portions extending in opposite directions, and the first portion of the strap is collected on the first shaft by operably moving the rotating shaft. The tensioning apparatus further includes a reeling device for collecting the second portion of the strap. Furthermore, the reeling device includes a ratcheting mechanism that facilitates collection of the strap.