Abstract: A device is provided for radially strengthening a polylactic acid tube, which includes a tubular mold, a rotating blade and a distal blade, wherein a rotating shaft of the rotating blade is arranged at an axial position of the tubular mold, a first end of the distal blade is movably connected to the rotating blade, and a second end of the distal blade is controlled by a control rod so as to open and close the distal blade. A strengthening method is provided, in which the device for radially strengthening a polylactic acid tube is used.

Abstract: A rod and casing handler according to embodiments of the present disclosure includes a boom mount that is configured to be coupled to a boom. A clamp mounting structure is coupled to the boom mount and has a central portion, a first arm, and a second arm, where each arm extends from the central portion. A first clamp is coupled to the first arm and includes a first set of actuatable tongs and a first removable saddle plate. A second clamp is coupled to the second arm, and it includes a second set of actuatable tongs and a second removable saddle plate. The first removable saddle plate has a first arcuate surface sized and shaped to correspond to a cylindrical body having a first diameter, and the second saddle plate has a second arcuate surface sized and shaped to correspond to a cylindrical body having a second diameter.

Abstract: In a drill pipe handling apparatus, a pipe gripping mechanism comprises three pipe-gripping jaws arranged to grip a pipe at locations adjacent the apices of a triangle containing the axis of the pipe. A first pipe gripping jaw is connectible to a first pivoted arm at any selected one of a set of plural distances from the pivot axis of the first arm and connected to the first arm at one of those plural distances, and a second jaw is connectible to the second arm at any selected one of the same set of plural distances from the pivot axis of the second arm and connected to the second arm at the same one of those plural distances at which the first jaw is connected to the first arm. Because the same first and second jaws are connectible to the arms at plural distances from the pivot axes, the same jaws can accommodate a wide range of pipe diameters.

Abstract: A bracelet clasp comprising first and second movable leaves (10, 20) pivoted about a central blade (3), that can occupy a first closed position suitable for holding a bracelet around the wrist of its wearer and a second open position suitable for removing the bracelet from the hand of its wearer, characterized in that the two movable leaves (10, 20) comprise at least one element for interaction between them which acts on the second movable blade when the first movable blade is actuated, in the closing and/or opening phase of the clasp.

Abstract: A tying system that quickly and easily secures together ends of ropes, straps or cords is provided. The tying system has a base member and two holding members attached to different sides of the base member by first and second hinges. The tying system has opposing retention surfaces positioned on the base or holding members so that when the holding members are folded back onto each other as permitted by the hinges, two retention regions are created that tightly grip and hold the rope, strap or cord in place. The tying system is adaptable for many different sizes and dimensions of ropes, straps or cords and may be designed to grip and hold permanently or releasably.

Abstract: A device for equipping birds with transponders (21) is not in the form of a foot ring but a wing tag (11) ; with the particularity that one of the at least two stiff plastic limbs (12') which are connected together at respective ends by way of a bending yoke (13) is provided with a trough-shaped or pocket-shaped receiving means (22) for a tube transponder (21) . Preferably, in the case of a three-limbed construction, a cover limb (12") which is reversibly latchable to the transponder limb (12') , when the tag (11) is still open, is disposed in the longitudinal direction between the transponder limb (12') and a rearward holding limb (12) which in turn, at its free limb end (15), can be positively lockingly connected to the cover limb (12") by means of a barb-type pin (17) , opposite the latching means, with a wing bone being engaged therebetween.

Abstract: An engaging device for releasably engaging an object. The engaging device comprising a supporting part and an engaging part mounted on the supporting part for pivotal movement about two spaced apart axes between two stable conditions, one being an engaging condition and the other being a release condition. The two axes being defined by means carried on a portion of the supporting part, the supporting part being resiliently deflectable at said means defining the two axes to accommodate movement of the engaging part between the two stable conditions and to urge the engaging part into one or other of the two stable conditions. The supporting part may define a housing which accommodates the engaging part and which provides protection to the resilient portions of the device.

Abstract: An adjustable mounting assembly for mounting a bird bath bowl or other object to a wide variety of base types, shapes and sizes. The adjustable bracket assembly includes components that can be assembled to one another so as to create a variety of embodiments, enabling a bird bath bowl, for example, to be mounted to a wide variety of base types, base shapes and base sizes. Bracket members which attach to a base may be adjustably secured to a center mounting plate, whereby the bracket members may be adjustably extended to various radial lengths. The adjustable bracket members may also be connected together without use of the plate so as to accommodate a variety of other base types, including railings.

Abstract: A double-ended gripper device adapted for holding a fishhook to free both hands of a fisherman to tie a fishline to the hook is useful for other purposes, such as holding small wires in position for soldering. The gripping device has two oppositely-extending spring-operated jaws, one of which can be used for mounting the gripper device on a support structure, and the other of which can be used to grip an object such as a fishhook. Both jaws can swivel relative to the central portion of the device so that a gripped component may be held in various orientations relative to the support structure.

Abstract: A double-lock friction fastener system useful as a restraint for hospital patients includes separate flexible first and second straps affixed to one another at a juncture and extending adjacent one another in the same general direction so that cooperating friction fasteners on free end portions of the straps can be frictionally secured to form a loop of infinitely adjustable size for attachment to an extremity of a patient to be restrained. A locking strap affixed to one strap is folded over the outer face of the other strap, and cooperating friction fasteners on the inside face of the locking strap and on the outer face of the other strap are frictionally secured so the folded-over locking strap covers the free end of the other strap and forms a double-lock friction fastener which resists pulling apart of the friction fasteners which form the loop.

Abstract: A lens mount including a lens cell wherein a lens is mounted through flexures. The lens seat in the lens cell has a radius of curvature match-mated to the lens surface which rests upon it. The rotational symmetry axis of the lens seat is coincident with the axis of rotation of the lens cell. The optical axis of the second lens surface is coincident with the axis of rotation of the lens cell.

Abstract: Printed circuit boards may be held in place in a releasable manner in the amping gap of a clamping device having a mounting member and clamping member arranged in parallel to each other to form the clamping gap. The clamping member is pivoted or journalled to the mounting member and an adjustable biasing spring tends to close the clamping gap. The device is simple, universally usable, and has a wide clamping range as well as a high clamping force and good heat removing abilities. An axial movement of an adjustment member permits opening or closing the clamping device.

Abstract: This invention is a method, together with an apparatus for practicing the method, wherein automotive exhaust systems, and the like, which become separated at their juncture to manifolds, or the like, by reason of breakage of fastening bolts, studs, and the like are repaired by the use of the apparatus consisting of clamping devices formed of a plurality of essentially "U" shaped frames with threaded elements in the legs of the "U" shaped frames which threaded elements engage adjacent areas of the separated exhaust system elements and draw them together by being moved through the threads into a clamping action.