Abstract: A vertically movable foam sponge cutting apparatus includes a vertical cutting device disposed on a blade strip frame. The vertical cutting device can be moved left and right in a vertical state. In addition, the vertical cutting device includes an ascending/descending device which is controllably movable up and down to change the rigidity of the blade strip in a cutting operation area. A foam sponge is cut along vertical cutting lines on a working bench. Therefore, a greater cutting function is achieved and the power consumption is lowered.

Abstract: A decorative tunnel light includes a casing having at least a front window, a front plane reflective mirror closely located behind the front window, a rear convex reflective mirror behind the front mirror with a predetermined distance existing between them, and a light string consisting of a plurality of bulbs located between the front and the rear reflective mirrors with the bulbs equally spaced along and radially inward projected from a periphery of the window. When the bulbs of the light string are lightened, lights from the bulbs repeatedly reflect off the front plane and the rear convex reflective mirrors to show behind the front window a plurality of lines of images of lights that converge in the distance in the tunnel light. The convex reflective mirror may be of any curvature and eccentric from the front window.

Abstract: Method for wet etching where proper arrangements of the substrates during the growth of the insulation layer is adopted. An insulation layer is prepared on the surface of a substrate at the area where thin film circuits are positioned. On the surfaces of the substrate where the thin film circuits are not positioned are prepared protective layers. During the wet etching the attack by the etchant may be avoided. The material of the insulation layer and the protection layer may be the same. The material of the protection layer may be the photo-resistant used in the wet etching process. The invention also disclosed circuit components prepared with the wet etching of this invention.

Abstract: Disclosed is a hat which can be made of multiple pieces or one integral piece of soft material sewed into a hat body having a crown portion and a brim portion. An elastic band is sewed onto and along a lower inner periphery of the crown portion of the hat body in specially patterned stitches to replace the lining band and decorative hat band usually used on a conventional hat. The hat can be folded without becoming deformed. The elastic band provides the hat with adjustable size and tightness to suit to different head shapes and sizes.

Abstract: A transmission mechanism for a magnet-bearing ornament, in which a clock main spring barrel serves to provide power required by the ornament to show a dynamic scene. The clock main spring barrel has a second wheel to replace a conventional second hand. The second wheel has a large number of teeth provided along its circumferential surface and meshes with a small driven gear to cause the latter to rotate at a high speed. The small driven gear may then cause a magnet-bearing member to coaxially rotate with it via a rotating shaft of the gear connected to the magnet-bearing member. Alternatively, the small driven gear is provided with a major rotational disc having magnets attached thereto. When the small driven gear rotates, the major rotational disc rotates synchronously to magnetically rotate the magnet-bearing member behind a background board of the ornament disposed between the clock main spring barrel and a front showing space.

Abstract: A port assembly for a marine vessel having an outer wall with an opening therein includes a shaped lens element, a pair of concentric plastic rings and a resilient gasket between the lens element and one of the rings. The plastic ring on the outside of the vessel is adjacent to the gasket and includes a pair of hinged brackets and a plurality of mounting members. A hinge assembly connects the plastic ring and lens element and allows the lens to be rotated inwardly to an open position and back to a closed position in which it is pressed against a gasket. One or more dogs are rotatably mounted on the mounting members for holding the lens element in a closed position. The second plastic ring is constructed and arranged to clamp the first ring within the opening and against the wall of the vessel. In a preferred embodiment of the invention, a decorative metal ring covers the exterior surface of the port assembly.

Abstract: A rare earth-based permanent magnet such as a neodymium-iron-boron permanent magnet, which is disadvantageous in respect of the low corrosion resistance, can be imparted with high corrosion resistance by providing the surface with a protective coating film of vitrified alkali metal silicate, e.g., sodium silicate, of which the SiO.sub.2 :(alkali metal oxide) molar ratio is in the range from 1.5 to 20. The vitrified alkali metal silicate-based protective coating film can be formed by coating the surface of the magnet with an aqueous coating solution containing sodium silicate to form a coating layer which is dried and subjected to a heat treatment at 50.degree. to 450.degree. C. to effect vitrification of the alkali metal silicate. The thickness of the thus formed protective coating film should be in the range from 5 nm to 10 .mu.m.

Abstract: Disclosed is an improvement in a rubber roller as a developing roller in a electrophotographic printer of which the silicone rubber forming the rubber layer on and around a metallic core mandrel is electrically semiconductive. The printing characteristics and abrasion resistance of the rubber roller to ensure good durability of the rubber roller in printing services can be greatly improved by the irradiation treatment of the rubber surface with ultraviolet light having principal wavelengths of 253.7 nm and 184.9 nm in an irradiation dose of 1.2 to 76 J/cm.sup.2, preferably, in an oxygen-containing atmosphere to form an ultraviolet-hardened surface layer of which the rubber surface has a specified surface rough-ness.

Abstract: A high-temperature, conveyer-type furnace includes a selectively flexible-inflexible conveyer belt for transporting articles through the furnace. The belt, which is preferably made of ceramic, includes a plurality of longitudinally-extending, pivotally-interconnected links and a locking mechanism for locking the links into a relatively inflexible mode when the belt is subjected to longitudinal compression so that the belt can be pushed through the furnace.

Abstract: An operating microscope includes a base and a support coupled to the base. An arm has a proximal end portion rotatably and/or vertically movably coupled to the support, and a distal end portion. At least the distal end portion is formed of a non-magnetic material. A microscope portion is coupled to the distal end portion of the arm and includes a stereoscopic optical system for forming an image of an observed part. The microscope portion is formed of a non-magnetic material. The operating microscope also includes a power system for operating the microscope portion or a part thereof, and an operation instructing portion for instructing the power system to operate.

Abstract: A bowling alley bumper system includes a pair of elongated bumpers extending along the length of an alley for guarding the gutters of a bowling alley when the bumpers are in an extended or guarding position. Each of the bumpers also includes a string of lights within a clear plastic rail which is disposed along an upper portion of the bumper. A controller is provided for pulsing the lights along each of the bumpers to produce a "chase" or other visual effect. For example, the controller may be used to illuminate the first, fourth, seventh, etc. lights in a string, followed by the illumination of the second, fifth, eighth, etc., lights, and then the third, sixth, ninth, etc., lights to give the appearance of moving down the alley. A controller may also be used to regulate the illumination of the lights across adjacent alleys.

Abstract: A venetian blind cutting machine including a support framework, a cutter module replaceably mounted on a top of the support framework, two air cylinders for driving cutters mounted in the cutter module, two sets of quick couplings for connecting the air cylinders to an upper cutter, a strip cutter, and a lower cutter mounted in a cutter seat of the cutter module, a blind supporter pivotally connected to the support framework in front of the cutter module for stably supporting a venetian blind to be cut, and a blind locating assembly fixedly mounted behind the cutter module for adjustably deciding the length of the venetian blind to extend into the cutter module for cut. With the cutter module containing three cutters for an upper rail, strips, and a lower rail of the venetian blind and the two air cylinders connected to the cutters via the quick couplings, the cutters can be driven by the air cylinders to neatly cut the rails and strips of the blind by only one cut.

Abstract: The invention relates to the structure of the camel-gate field-effect transistor with multiple modulation-doped channels. The device structure, from the bottom to the top in succession, includes the substrate, the buffer layer, the multiple modulation-doped channels, the thin and complete depletion layer, and the ohmic contact layer. The transistor is characterized by a camel-gate diode, which is composed of the multiple modulation-doped channels, the thin and complete depletion layer and the ohmic contact layer. The gate structure may achieve the high potential height between the gate electrode and the source electrode as well as the high breakdown voltage performance. Furthermore, the use of multiple modulation-doped channels, made of n-type GaAs materials with different thickness and doped concentration, can exhibit excellent properties of high output current, large and linear transconductances.

Abstract: Disclosed is a light string fixing structure which mainly includes a fixing seat and a lampholder detachably connected to the fixing seat. The fixing seat can be fixedly mounted onto a desired position by extending a nail or screw through a centered hole of the fixing seat into a wall surface or by glue or double-side adhesive tape. The lampholder is provided around a rear end with a flange and the fixing seat is provided around a periphery with claws, such that when the lampholder is backward pushed into the fixedly mounted fixing seat, it is retained in place in the fixing seat by the engagement of the claws with the flange. Whereby light strings using the fixing structure can be easily installed to form desired patterns and lamps connected to the lampholders contained in the light strings are protected from swinging or colliding and broken caused by wind or an outcoming force.

Abstract: A film feeding apparatus of a camera using a film having two perforations per frame detects the end of the film by detecting the final frame of the film. The film feeding apparatus comprises a detecting means for detecting the passage of a first perforation to detect a feeding speed of the film, a setting means for setting a predetermined limit value (limiter time) in accordance with the feeding speed, a film end determining means for determining that the film has ended when the passage, of a second perforation is not detected within the set limit value while the film is wound up. The film feeding apparatus feeds the film in accordance with a predetermined procedure of one-frame winding up and rewinds the film when the film has ended.