Abstract: A telescopic column includes a cylinder and a post inserted in the cylinder partially. The post includes a ladder formed thereon. A mount is attached to the cylinder. A positioning element is installed on the mount pivotally. The positioning element includes a dent for engagement with the ladder during an attempt to insert the post into the cylinder and for disengagement from the ladder when the post is extended from the cylinder. A gear is installed on the amount rotationally. A handle is installed on the mount so as to provide pivotal in an active direction and in an idle direction opposite to the active direction. An extending element is installed on the handle movably. The extending element includes a detent for engagement with the gear in the active direction of the pivotal of the handle and for disengagement from the gear in the idle direction of the pivotal of the handle.

Abstract: A strap tenser includes a frame, a pin, a handle and an automatic reeling device. The pin is installed on the frame. The handle is pivotally installed on the pin. The handle includes a crossbar around which a first strap is wound after it is wound around the pin. The automatic reeling device includes a pin, a wheel, a cap, a crossbar and a spiral spring. The pin is installed on the frame and connected with an end of the second strap. The wheel is rotationally installed on the pin of automatic reeling device. The cap is rotationally installed on the pin thereof. The crossbar extends between the wheel and the cap eccentrically for reeling in the second strap. The spiral spring includes a first end secured to the frame and a second end secured to the cap.

Abstract: A strap tenser includes a frame, a pin, a handle and an automatic reeling device. The pin is installed on the frame. The handle is pivotally installed on the pin. The handle includes a crossbar around which a first strap is wound after it is wound around the pin. The automatic reeling device includes a pin, a wheel, a cap, a crossbar and a spiral spring. The pin is installed on the frame and connected with an end of the second strap. The wheel is rotationally installed on the pin of automatic reeling device. The cap is rotationally installed on the pin thereof. The crossbar extends between the wheel and the cap eccentrically for reeling in the second strap. The spiral spring includes a first end secured to the frame and a second end secured to the cap.

Abstract: A strap tenser includes a frame connected with a first strap. A reel is rotationally installed on the frame for reeling a second strap. At least one ratchet wheel is secured to the reel. A first detent is movably installed on the frame between an operative position where it engages with the ratchet wheel and an idle position where it leaves the ratchet wheel. A handle is pivotally installed on the reel. A second detent is movably installed on the reel between an operative position where it engages with the ratchet wheel so that the handle is operable to rotate the reel and an idle position where it leaves the ratchet wheel. A spiral spring includes a first end connected with an end of the reel and a second end connected with the frame or the handle for automatically rotating the reel when the first and second detents are in the idle position.

Abstract: A strapping apparatus includes a frame. A first strap is connected to the frame. An axle is installed on the frame. A second strap is connected to the axle. A spool is positioned around the axle. The spool defines a slit through which the second strap is directed. Two ratchets are connected to the spool and rotationally installed on the axle. A coil spring includes a first end connected to the axle and a second end connected to the frame in order to rotate the spool. A first detent is movable on the frame between an operative position in engagement with the ratchets and an idle position away from the ratchets. A handle is pivotally installed on the axle. A second detent is movable on the handle between an operative position in engagement with the ratchets in order to rotate the spool and an idle position away from the ratchets.

Abstract: A strap fastener set, capable of providing a reading of a tensile force exerted thereon, includes a strap fastener for winding a first strap and a gauge provided between the strap fastener and a second strap. The gauge includes a cylinder tied with the second strap. The cylinder includes a window defined therein and a scale provided thereon along the window. A first ring is secured to the cylinder. A spring is put in the cylinder. A rod extends past the ring through the spring for connection with the strap fastener. A second ring is secured to the rod so that it is moved relative to the cylinder so as to compress the spring against the first ring when a tensile force is exerted on the straps. The second ring includes an indicator formed thereon for cooperation with the scale so as to provide a reading of the tensile force.

Abstract: A strap fastener set, capable of providing a reading of a tensile force exerted thereon, includes a strap fastener for winding a first strap and a gauge provided between the strap fastener and a second strap. The gauge includes a cylinder tied with the second strap. The cylinder includes a window defined therein and a scale provided thereon along the window. A first ring is secured to the cylinder. A spring is put in the cylinder. A rod extends past the ring through the spring for connection with the strap fastener. A second ring is secured to the rod so that it is moved relative to the cylinder so as to compress the spring against the first ring when a tensile force is exerted on the straps. The second ring includes an indicator formed thereon for cooperation with the scale so as to provide a reading of the tensile force.

Abstract: A telescopic support includes a tube and an elongated element inserted in the tube and formed with a series of ratchets. A driving and locking device includes a locking element, a spring and a driving element. The locking element includes a jaw formed with at least one ratchet and being pivotally installed on the tube. The spring is provided between the tube and the locking element for biasing the ratchet of the locking element into engagement with the ratchets of the elongated element. The driving element includes a jaw formed with at least one ratchet. The driving element can be pivoted on the tube in a direction so as to engage the ratchet thereof with the ratchets of the elongated element. The driving element can be pivoted in an opposite direction so as to disengage the ratchet thereof from the ratchets of the elongated element and pivot the locking element for disengaging the ratchet of the locking element from the ratchets of the elongated element.

Abstract: A concealable buckle apparatus includes a panel, a locking element, a shaft and a buckle. The panel includes a recess and a margin formed about the recess. The recess includes a bottom and a wall projecting from the bottom and two slots extending from the bottom to the wall. The locking element includes a concave first portion, a convex second portion extending from the first portion, a concave third portion extending from the second portion and a fourth portion extending from the third portion. The fourth portion of the locking element is secured to the bottom of the recess. The shaft is put between the locking element and the bottom of the panel. The buckle includes two lateral portions inserted through the slots and secured to the shaft and a central portion formed between the lateral portions. The buckle is concealed in the recess when the shaft is retained in the first portion of the locking element.

Abstract: A force-indicating strap fastener includes a base, an axle, a lever, two ratchet wheels, a first detent, a second detent, and a force gauge. The base including a first guiding element formed thereon and a second guiding element formed thereon. The axle is rotationally mounted on the base. The lever is pivotally mounted on the axle. The ratchet wheels are secured to the axle. The first detent is mounted on the base for engagement with the ratchet wheels. Thus, rotation of the axle relative to the base in a first direction is allowed, but rotation of the axle in a second direction opposite to the first direction is avoided. The second detent is mounted on the lever for engagement with the ratchet wheels. Thus, pivoting of the lever in the first direction results in rotation of the axle in the first direction, but pivoting of the lever in the second direction does not entail rotation of the axle in the second direction. The force gauge includes a casing, a spring, an anvil and an indicator.

Abstract: A strap fastener system includes a strap fastener for fastening a belt and a winding device for winding the strap. The winding device includes a housing, a reel, a control device and a torque spring. The reel is put in the housing for winding the strap. The control device is partially and movably installed in the housing between a rotational position and a non-rotational position. A torque spring is arranged between the reel and the control device for automatically rotating the reel in the non-rotational position of the control device.

Abstract: An automatic winding device is provided for a strap fastener. The automatic winding device includes a housing, a reel rotationally received in the housing for winding a strap introduced through the strap fastener and a spring connected between the housing and the reel. A shaft is securely received in the housing for supporting the reel. The spring is a coil spring mounted on the shaft and received in the reel. The spring includes an internal end secured to the shaft and an external end secured to the reel. In an aspect, at least one ratchet wheel is formed on the reel, and a detent is movably mounted on the housing for releasable engagement with the reel. The detent is biased by means of a second spring. The housing defines a slot through which the detent is inserted. The housing includes a stem formed thereon within the slot. The detent includes a groove defined therein for receiving the stem and the second spring. Thus, the second spring is compressed between the stem and a portion of the detent.

Abstract: A concealable buckle apparatus includes a supporting element, a buckle, a locking device and a panel. The buckle is pivotally mounted on the supporting element between an extended position and a concealed position. The locking device is movably mounted on the supporting element between a locking position for locking the buckle in the concealed position and a releasing position. The panel is mounted on the supporting element and defining an opening through which the buckle extends in the extended position and a slot through which the locking device is accessible.

Abstract: A manual stretcher includes a frame, a shaft, a ratchet, a claw, a joint and a crank. The frame includes two lateral plates, an intermediate plate interconnecting the lateral plates and a hole defined in each of the lateral plates. The frame can be attached to an external structure so that the manual stretcher can be retained in position in operation. The shaft includes a slot defined therein for receiving a portion of a strip of work to be stretched. The shaft is inserted trough the holes. The ratchet is mounted on an end of the shaft. The claw is pivotally mounted on one of the lateral plates of the frame for engagement with the ratchet. The joint is mounted on another end of the shaft for engagement with the crank for rotation of the shaft. The shaft includes two halves. The ratchet includes two meniscus holes defined therein for receiving the halves of the shaft. The joint includes two meniscus recesses defined in an end thereof for receiving the halves of the shaft.

Abstract: A strap fastener includes a base, a shaft mounted on the base, a reel rotationally mounted on the shaft, two ratchet wheels formed on the reel, a torque spring arranged between the reel and the shaft, a lever pivotally mounted on the base, a first detent movably mounted on the lever for engagement with the ratchet wheels, a second detent movably mounted on the base for engagement with the ratchet wheels, a wedge formed on the second spring-biased detent, a handle including a first end in which a hole is defined, a second end secured to the lever and a control element extending through the handle and the lever and including a first end exposed through the hole defined in the first end of the handle and a second end in engagement with the wedge. The first end of the control element can be pressed so as to move the second end of the control element from a position for engaging the second detent with the ratchet wheels to a second position for disengaging the second detent from the ratchet wheels.

Abstract: A buckle device includes a body, a fastening element and a latch assembly. A first strap is secured to the body. The fastening element includes a rod formed thereon. The fastening element is mounted on the body so that it can be pivoted between a first position for allowing winding of a second strap around the rod and a second position for tensing up the second strap by means of the rod. The latch assembly can retain the fastening element in the second position. The body includes two side plates. The fastening element includes two side plates between which the rod is formed. A shaft is used to mount the fastening element on the body. The side plates of the body each define a hole for receiving the shaft. The side plates of the fastening element each define a hole for receiving the shaft. The latch assembly includes a latch mounted on the fastening element.

Abstract: A buckle device includes a body, a fastening element and a latch assembly. A first strap is secured to the body. The fastening element includes a rod formed thereon. The fastening element is mounted on the body so that it can be pivoted between a first position for allowing winding of a second strap around the rod and a second position for tensing up the second strap by means of the rod. The latch assembly can retain the fastening element in the second position. The body includes two side plates. The fastening element includes two side plates between which the rod is formed. A shaft is used to mount the fastening element on the body. The side plates of the body each define a hole for receiving the shaft. The side plates of the fastening element each define a hole for receiving the shaft. The latch assembly includes a latch mounted on the fastening element.

Abstract: A manual stretcher includes a frame, a shaft, a ratchet, a claw, a joint and a crank. The frame includes two lateral plates, an intermediate plate interconnecting the lateral plates and a hole defined in each of the lateral plates. The frame can be attached to an external structure so that the manual stretcher can be retained in position in operation. The shaft includes a slot defined therein for receiving a portion of a strip of work to be stretched. The shaft is inserted through the holes. The ratchet is mounted on an end of the shaft. The claw is pivotally mounted on one of the lateral plates of the frame for engagement with the ratchet. The joint is mounted on another end of the shaft for engagement with the crank for rotation of the shaft. The shaft includes two halves. The ratchet includes two meniscus holes defined therein for receiving the halves of the shaft. The joint includes two meniscus recesses defined in an end thereof for receiving the halves of the shaft.

Abstract: A buckle device includes a main body, a rotational retaining device rotatably mounted to the main body, and a buckle having an end connected to the rotational retaining device to pivot therewith. The rotational retaining device includes a slit through which a free end of a strap is extended. A retaining member is mounted to the other end of the buckle and has an engaging portion for releasably engaging with an engaging section of the main body. The retaining member further includes an operative portion that is operable to disengage the engaging portion of the retaining member from the engaging section of the main body. The operative portion of the retaining member is located away from the free end of the strap when the buckle is in a retained position, thereby preventing inadvertent actuation of the operative portion of the retaining member.

Abstract: A cargo positioning device comprises an outer tube having a first end with an inner threading for engaging with a first screw. A first end plate is securely attached to the first screw to move therewith. An inner tube has a first end and a second end that is telescopically received in a second end of the outer tube. The first end of the inner tube has an inner threading for threadedly engaging with a second screw. A second end plate is securely attached to the second screw to move therewith. The inner tube further includes a number of longitudinally spaced positioning holes. A pin is removably extended through a transverse hole in the outer tube and one of the positioning holes of the inner tube that is aligned with the transverse hole to thereby secure the inner tube and the second tube together. A fine adjusting device is provided to turn the inner tube and the outer tube that are secured together to cause the screws to move relative to the inner tube and the outer tube.