Abstract: Disclosed is an air conditioner including a first frame including a through hole, a second frame rotatably coupleable to the first frame, the second frame including a burring portion at least a portion of which is insertable into the through-hole in a first direction, where while the burring portion is inserted into the through-hole of the first frame, the burring portion protrudes in the first direction, and a burring hole formed by the burring portion, and a fastening member insertable into the burring hole in a second direction opposite to the first direction and configured to function as a rotary shaft of the second frame, where while the fastening member is inserted into the burring hole, the fastening member protrudes in the second direction.

Abstract: Disclosed herein is an alignment system which is tractable by amateur boat builders and flat-packable for shipping, to assist such builders in assembling plate-based boat hulls free from hull skin warping, such system comprised of (a) longitudinal and transverse skeleton elements, such elements employing half-lap or similar joints and (b) an alignment jig comprised of a horizontal plate with intruded deep slots corresponding to the thickness and location of upper edges of the skeleton elements. The jig is set atop a planar surface (i.e., concrete floor or worktable), with the slots facing upwards. The skeleton elements are inverted, mated with each other at the half-lap joints, and inserted into the slots in the plate jig. The slots and the skeleton joints work together to maintain precise location and rotation of all skeleton elements, such that the edges of the freestanding skeleton present a developable arc for hull skin panel installation.

Abstract: Educational and instructive kits for surfboard construction are provided. In accordance with various embodiments of the present teachings, kits for making wooden and fiberglass scale-model surfboards can include blanks, templates, instructions, and/or other materials. A kit in accordance with the present teachings provides an educational tool for developing the skills for, and an understanding of, surfboard construction. As well, a kit of the present teachings can be employed in scale-model prototyping of surfboard designs.

Abstract: A method, apparatus, and computer software to provide a kit which allows an operator to construct a variety of vehicles such as cars, boats, hovercraft, airplanes, etc. The operator can use software to select characteristics of the vehicles, and then print out sheets of paper or other thin material that can then be folded into a vehicle. Motors can be inserted into each vehicle in order to propel the vehicle. The kit can also comprise special tools which allow for forming the paper or other material into particular three dimensional shapes. The kit can also comprise a remote control transmitter and receiver so that the vehicles can be controlled remotely.

Abstract: An anti-deflection structure for a chassis of a remote-controlled car includes a board which is added below a central differential gear at a center of a chassis, to strengthen a rigid structure of the chassis. A center of the board is provided with a hollow part for emplacing a gear set of the central differential gear, and an exterior side of the hollow part is provided with a plurality of pivoting holes. The pivoting holes correspond to through-holes on the chassis for locking the central differential gear, thereby locking and fixing the board. In addition, the hollow part is locked at columns of the central differential gear by transfixing screws from bottom to top into the pivoting holes and the through-holes. On the other hand, front and rear ends of the board provide for connection of two support arms, thereby constituting the anti-deflection structure for the chassis.

Abstract: A shock absorber for use as a construction element of a toy building set, the shock absorber comprising a rod element provided with a collar at a first end and a mounting at a second end; a sleeve through which the rod element extends; an air-filled cylinder element abutting the sleeve and enclosing the collar; the air-filled cylinder element having a cylindrical inner surface which is so configured that the collar on the rod element is in displaceable abutment on the inner wall of the cylinder element; and a spring surrounding the rod element having one end in abutment on the rod element at the second end, and having an opposite end in abutment on the sleeve, whereby the spring presses the sleeve towards the air-filled cylinder element.

Abstract: A built-up toy ejector includes an ejector and a model car assembled from a plurality of flat parts. The model car has a rear contact end adapted to locate in a front end of the ejector. The ejector includes parts forming an ejecting plate and an ejecting control. The ejecting plate could be compressed to position a front end thereof in a retaining location, and the ejecting control could be operated to release the front end of the ejecting plate from the retaining location to eject the model car in front of the ejector. The flat parts for building up the ejector and the model car are initially formed on one or more boards that occupy very small space and enable the built-up toy ejector before assembling to display alone or along with other merchandise.

Abstract: A kit for assembly of an entertainment apparatus includes a party balloon for filling with gas which is buoyant in air at ambient pressure and temperature; a basket structure form sheet including interconnected first, second, third and fourth basket wall panels and a basket floor panel, all of the panels being separated from each other by fold lines, and a panel interconnecting mechanism for holding the side wall panels and floor panel juxtaposed in the configuration of a basket; and a suspension harness including at least one elongate flexible member wrapped around the inflated party balloon and extending downwardly to and engaging the basket structure. The panel interconnecting mechanism preferably includes several slots near the edges of the floor panel and dove tail tabs protruding from the edges of the wall panels which fit engagingly into the slots to hold the assembled basket in folded, assembled configuration.

Abstract: A self-aligning wing structure and method of assembly utilizes a main spar formed with spaced apart notch openings. The main spar is positioned on a substantially flat surface for receiving a plurality of ribs formed with leading edge slot openings and trailing edge slot openings. A leading edge core member is slid into the rib leading edge slot openings and a trailing edge core member is slid into the rib trailing edge slot openings. Accordingly, it is possible to achieve a self-aligning aerodynamic wing structure in accordance with the present invention.

Abstract: An assembling structure for main wing of a model airplane. The main wing is composed of a left wing and a right wing. The mating faces of the left and right wings are disposed with complementary engaging seat and engaging block which are mated with each other and tightened by a conic screw. Therefore, the left wing and the right wing can be quickly firmly assembled to form the main wing. The screw can be easily untightened to quickly disassemble the left wing from the right wing for easy carriage or storage.

Abstract: An assembling structure for tail wing of a model airplane. The airplane body has a horizontal connecting face at tail section for connecting with the horizontal tail wing and vertical tail fin. A bottom face of the vertical tail fin is disposed with two projecting fixing rods. A center of the horizontal tail wing is formed with two through holes corresponding to the fixing rods of the tail fin. A sleeve is fitted on inner wall of each through hole. The connecting face of the tail of the airplane body is also formed with two through holes corresponding to the fixing rods of the tail fin. A sleeve is fitted on inner wall of each through hole. The fixing rods of the tail fin can be firmly passed through the tail wing and airplane body and locked by screws. Therefore, the tail wing of the model airplane can be quickly firmly assembled or disassembled from the airplane body for easy carriage or storage.

Abstract: A model airplane, airplane kit, and method of making a model airplane. The kit of the present invention enables children and adults to easily make a well-flying model airplane using recycled plastic foam moldings such as polystyrene food trays well known as 10-S in the food packaging arts.

Abstract: A three-dimensional puzzle assembly comprising a structural portion and a decorative portion is described herein. The structural portion includes a plurality of structural elements that may be assembled to form a predetermined three-dimensional shape. The structural elements include first connectors. The decorative portion includes a plurality of decorative elements made of resilient material and provided with a front decorative surface and a reverse surface. The reverse surfaces are provided with at least one second connector configured, positioned and sized to connect with the first connector to therefore removably interconnect the decorative elements and the structural elements. A wall mounting assembly to support a three-dimensional puzzle assembly is also described herein.

Abstract: The present invention relates to an improved model airplane for purposes of scientific education and competition. Model airplanes in the prior art are either bad at flying, or do not look like real airplanes; and all are short of a collision prevention device. By means of some special positioning adapters for fixing the wing section firmly to the body and by adding a collision buffer piece to the nose, the model airplane according to the present invention is not only good at flying, but also safe and durable to use. The model airplane according to this invention is, therefore, best suitable for the above-mentioned purposes.

Abstract: A power tool is transformable from a power wrench configuration for use in fastening elements forming a toy vehicle to an engine for the toy vehicle. The power wrench includes a handle having sections pivotally mounted to the housing of the wrench. The handle sections, when used as a wrench, form a single handle for the wrench and are pivoted away from one another to lie along opposite sides of the housing. The handle sections have portions simulative of an actual engine whereby the power wrench may be transformed to a toy engine simulative of an actual full-scale engine. The engine may be disposed in the toy built with the power wrench.

Abstract: Apparatus in kit form for the assembly of a model rocket having a body tube, fins, and propellant mount, wherein each fin has a root portion at a radially inner-most end for mountingly extending through slots apertured in the body tube and for mounting engagement with the propellant mount. The body tube is apertured with slots for mountingly receiving the root portions of respective fins. The propellant mount telescopically mounts within the body tube and mountingly seats the fin roots. In one embodiment, a plurality of mounting brackets is arranged for assembly with one another for forming the propellant mount. The mounting brackets have radially-extending mounting recesses for engaging and positioning a fin root.

Abstract: A fabric covered roof for model vehicles. The roof is constructed by providing an upper frame having ribs formed on the upper surface thereof. A fabric cover is stretched over the ribs, covering the entire frame. The edges of the fabric cover are folded under the frame and secured to pegs on the bottom surface of the frame by washers. A lower plate, conforming to the contour of the bottom surface of the upper frame, having bores arranged in a matching pattern with the pegs is fitted within the frame and covering the edges of the fabric cover. The bottom surface of the lower plate having texture to simulate the visual texture of the fabric cover. Support posts are mounted in spaces between the lower plate and the upper frame at locations inline with the ribs to simulate completed bows for supporting the roof on the vehicle. A rear window insert is also press-fitted into matching openings in the back panels of the upper frame and lower plate.

Abstract: The invention relates to a game using remotely-controlled miniature vehicles. One player drives an invading vehicle which shoots a ping-pong ball at a target which is defended by a second player. The defender fires balls at the vehicle and, if he strikes the vehicle, the vehicle incurs a penalty of temporary disablement. In addition, the vehicle can be required to periodically tag bases which the defender strews on the playing field; failing to do inflicts a penalty. Further, the invader can fire two types of missiles, and the defender must protect two goals. Firing the first missile can act as a feint by which the defender is distracted from defending one of the goals.

Abstract: A display model resembling a vehicle that has been sectioned longitudinally by a verticle plane. The display model being constructed of a plastic or other material suitable for moulding, incorporates a simulated vehicle interior portion incorporated into the baseplate. Simulated seat and steering wheel and other interior components are also included within the display models interior. In addition, the display model may also include functional features, such as, an opening hood and door and illuminable lights.

Abstract: A covering sheet material particularly for covering balsa wood frameworks of model aircraft, comprises a fibrous scrim which is impregnated with a resin solution containing a cross-linking agent and a catalyst. The resin solution may also include a dye or pigment, coloring agent, a filler or a metal powder, to give a desired surface appearance. The scrim may be a heat bonded non-woven fabric of polyester fibres, and the covering sheet may be bonded to the framework using a heat seal adhesive. After bonding, the covering material may be tautened by further heating. The covering material is lighter, stronger and more puncture resistant than conventional doped tissue paper covering materials.

Abstract: A construction toy set whose main component is a cubical open-top box, the bottom and side walls of which are divided into quadrants, each having a keyhole therein and a coupling collar encircling the keyhole and projecting from the quadrant. Also included in the set are cylindrical spacers that fit over the collars and extend therefrom, wheels having cylindrical hubs that can slip over the spacers which then function as axles, and hub caps that rest against the outer end of the spacers or the wheel hubs, each cap having a center keyhole matching the quadrant keyhole. The components can be assembled and interconnected to create different structures by means of connector bolts each having a key at one end capable of passing through the keyholes.

Abstract: A technique is described for the making of frames for an authentic plank-on-frame ship model kit. A wooden boat hull is made with a hull thickness that is the same for that of the frames. The hull has the internal and external surface contours desired for the ship model. The boat hull is then sliced at regular intervals to form individual segments representative of the desired frames. A set of frames is then selected from the sliced segments for an authentic plank-on-frame ship model.

Abstract: A ship suitable for mounting in a bottle comprising a hull having a generally horizontal deck, a plurality of masts, a plurality of yards on each mast, openings in the deck, each of which is shaped to receive the end of one of the masts and in which the end of the mast is pivotably seated to permit the masts to be raised from a lowered horizontal position. A plurality of rigging lines extend from spaced locations on each mast downwardly laterally to be secured to the outside of the hull on both sides thereof, a plurality of lines extend from yards on one mast to a yard on the mast behind it, and a plurality of lines extend from the leading mast through openings in the ship bowsprit, and these lines are used to raise the masts when the ship is in a bottle.

Abstract: A toy cargo plane having a fuselage (24) with two front doors (32, 34) pivotably mounted within the front of the fuselage. The doors are mechanically opened by actuation of a lever and rod arrangement (44, 46) slideable along its axis and mounted within a slot formed in the tail end of the body. A further lever and rod arrangement (50, 52) slideably moves a ramp (36) in and out of the open front doors to enable vehicles or other toys to be loaded onto the ramp.