Abstract: A single sheet report cover is folded to create a top cover sheet, a bottom cover sheet, a narrow binding margin panel extending a short distance from a spine fold, and a return panel folded under the binding margin panel at a return fold. An elongated document binder clasp is provided with a pair of mutually facing jaws that define a gap therebetween. At least one of the jaws has a hooked lip. The document binder clasp is pressed on to the portion of the document binder covering the binding margin of a stack of papers encased therewithin. The hooked lip of one of the jaws of the clasp engages the return fold and the resilient clamping force of the jaws is sufficient to prevent either the document binder or the sheets held between the top and bottom covers formed by the binder from being pulled away from the clasp.

Abstract: An aircraft servicing pit is provided that has a pit lid set within a supporting frame and hinged for rotation relative to a pit access opening. However, the pit lid is also completely detachable from the surrounding frame once it opened. The pit lid support has a flat deck surface with an access opening surrounded by a supporting rim located beneath the deck surface. A hinge pocket is defined in the structure of the pit lid support. A pair of hinge axle end slots are formed on the opposite sides of the pit lid support frame and are inclined upwardly and outwardly. The pit lid has a hinge leaf with a pair of hinge axle ends projecting transversely therefrom in opposite directions. The hinge axle ends engage the hinge axle end slots and are entrapped therein when the pit lid is closed.

Abstract: A clamping stem is provided for concurrently securing a bicycle fork frame steering tube and a bicycle handlebar together. The clamping stem has a mounting bracket formed as a U-shaped structure with a pair of opposing mutually parallel legs with coaxial openings defined through the legs near the free ends thereof. A steering tube saddle block having a vertically oriented concave surface is disposed between the mounting bracket legs facing the steering tube openings therein. A handlebar saddle block having a horizontally oriented concave surface faces the concave surface of the mounting bracket yoke. A steering tube fits through the apertures in the mounting bracket legs while the handlebar fits through the space located between the mounting bracket yoke and the curved surface of the handlebar saddle block. The sides of the saddle blocks facing each other are formed with inclined surfaces that meet at apices centered between the lateral edges of the mounting bracket legs.

Abstract: A multi-position latch mechanism is provided for a subsurface aircraft ground servicing chamber formed by a pit having an upright interior wall and a pit lid seat disposed atop the pit. A pit lid is provided which, when closed, rests upon the pit lid seat. The latch mechanism includes a catch member depending from the pit lid adjacent the upright wall of the pit. The catch member is mounted to the pit lid for rotatable movement relative thereto. A latching member is mounted on the upright interior pit wall and has a plurality of vertically spaced teeth that face the catch member. The catch member has a hook facing the latching member. The hook is alternatively engageable with each of the teeth, depending upon the extent to which debris on the pit lid seat holds the pit lid off of its pit lid seat.

Abstract: A portable filing case is provided with a stiff back, bottom, front, top, and foldable cover flap and is delineated into a rear compartment and an expandable front compartment by an upright compartment demarcation panel. The rear compartment is provided with a pair of flexible fabric rear side panels that extend between the file case back and the compartment divider panel. A pair of front compartment side panels are folded from top to bottom with a plurality of accordion folds that extend between the compartment divider panel and the front file cover. A plurality of file section dividers are individually secured to the expandable compartment side panels at separate ones of the accordion folds. A stiff-walled rectilinear tote box may be inserted snugly into the rear compartment to accommodate bulky items, such as thick catalogs and other relatively large articles. The file section dividers divide the front compartment into a plurality of filing pockets.

Abstract: An endosseous dental implant fastening system is provided with a fastening screw that is configured to prevent complete disengagement of the fastening screw from a screw extraction tool during removal of the screw from threaded engagement with the implant and abutment members. A fastening screw is modified from conventional construction by providing the mouth of the socket in the head of the screw that is utilized to rotate the screw with left-hand threads, and to provide an installation and removal tool with a shank having corresponding left-hand threads at it distal tip. Counterclockwise rotation of the installation and removal tool relative to the fastening screw causes the distal tip of the installation and removal tool to advance into engagement with the left-hand threads defined in the socket of the fastening screw. The fastening screw is thereby temporarily attached to the installation and removal tool during installation and removal of the fastening screw.

Abstract: A weather identification system is provided which employs a first photosensitive receiver positioned directly in the path of a beam of light a predetermined distance from a partially coherent light beam source. The first photosensitive receiver is in direct optical communication with the light beam source to produce electronic signals in response to scintillations caused by particle movement between the source and the first receiver. A second photosensitive receiver is positioned out of the path of the beam of light and is oriented at an oblique angle relative thereto to provide an output indicative of forward scattering of light from scintillations that occur in the beam of light. The signals from the second photosensitive receiver are AC coupled to provide an output indicative of rate of fluctuation and having a signal strength characteristic that even distinguishes between light drizzle and fog.

Abstract: A medication inhaler is provided with a lanyard that is formed into a wearer neck encircling loop. A wearer is thereby able to carry the medication inhaler about his or her neck so that it is readily at hand in the event of an asthmatic or allergic attack. The lanyard may be looped directly about the inhaler and secured thereto by a cinch, slide, slipknot, or some other means. Alternatively, the lanyard may be connected to a socket designed to receive and capture the inhaler. A releasable coupling is provided with a pair of mutually engageable and separable coupling elements. At least one of the coupling elements is connected to the lanyard so that if the inhaler becomes caught or snagged on some object, the coupling members will separate to prevent injury to the user. Preferably the lanyard is formed with a pair of opposing ends at which the mutually engageable coupling members are located. In this way the coupling members will separate if either the lanyard or the inhaler becomes caught on some object.

Abstract: A portable, expandable file section case is equipped with file section dividers, at least some of which are provided with pockets. The file section dividers of the invention are formed of a laterally expansive partition with a pocket attached thereto. The pocket may be formed either from the same sheet of material as the file section divider partition, or from a second sheet of material. For example, the pocket may be formed by an extension of the same sheet of material that projects from the lower edge of the partition and is folded back up into contact with the divider partition. The opposing pocket panel side edges may be secured to the file section divider partition by sonic welding or some other means. Alternatively, the pocket may be formed from a second sheet of material having a generally rectilinear configuration and formed in the manner of a patch on the divider partition. The pocket is secured along its bottom edge and its opposing side edges to the divider partition.

Abstract: A reusable paint dispersing grenade of the type employed in paint ball games is constructed in such a manner as to avoid the use of any combustible materials, and also to avoid the requirement for access to a source of compressed air for operation. The paint grenade of the invention has a hollow, fluid-tight casing defining an enclosed cavity that is divided internally into a marking paint chamber, a first propellant component chamber, and a second propellant component chamber. The propellant component chambers are each filled separately with propellant components, but remain isolated from each other until the paint dispersing grenade is used. At that time the propellant components chemically react with each other in a noncombustible manner to produce a quantity of gas under pressure.

Abstract: A portable, handheld seam welding gun for filling in seams between sheets of linoleum flooring is provided with a unique heat nozzle. The heat nozzle of the invention couples the heating barrel of a conventional floor seam welding gun to a conventional hollow welding tip by receiving the heating air inlet tube of the tip within the confines of a downstream socket formed in the body of the heat nozzle. A larger, upstream socket formed in the body of the heat nozzle fits onto the heating barrel of the handheld, portable welding gun. A plurality of preheating jets are formed on the underside of the body of the heat nozzle to preheat the region of the channel immediately to the rear of the welding tip just before molten sealant flows into that portion of the channel.

Abstract: A latch assembly is provided for an aircraft service pit having a lid frame formed with an access opening encompassed within an upwardly facing bearing ledge. The pit lid has a flat upper surface and is hinged at one edge at a horizontal axis of rotation relative to the lid frame. The pit lid has an opposite, latching edge. A latch mechanism is mounted on the latching edge of the pit remote from the horizontal axis of rotation and includes a latch mount embedded in the structure of the pit lid. The latch mount defines a latch guide path inclined downwardly from the flat upper surface of the pit lid and outwardly toward the latching edge thereof. A latch bolt, preferably having a T-shaped handle, is reciprocally mounted for movement in the latch guide path. The latch bolt preferably has a gripping end formed as a T-shaped handle that is accessible from the flat upper surface of the pit lid. The latch bolt also has an opposite, distal, bearing ledge-engaging end.

Abstract: A motion picture reel is comprised of separable components including a hub formed with a hollow central, cylindrical sleeve and a pair of side retainers on opposing sides of the hub that hold the film therebetween. Each of the side retainers is provided with a central core located on its inner surface. Each core has a generally cylindrical configuration. A prong is formed to project longitudinally from each core parallel to and at a spaced distance from the axis of rotation. A corresponding prong receiving socket is defined in the core diametrically opposite the prong. The cores of the side retainers are inserted into the central, tubular sleeve of the hub so that the prong of each core enters the prong receiving socket or cavity of the other core. A slight counterrotation of the side retainers relative to each other latches the hooks on the ends of the prongs into the sockets.

Abstract: A binder for papers, photographs, or other sheet-like materials is provided with a cover having one or more window openings defined therein. A flat, transparent protective sheet is located in contact with the inside surface of the binder cover and a backing sheet overlies the protective sheet. The backing sheet is secured to the peripheral margin of the protective sheet, and elsewhere as required, to delineate at least one, and preferably a plurality of pockets. The pockets are formed between the backing sheet and the protective sheet. An elongated slit in defined through the backing sheet behind each pocket created. The peripheral edges of the backing sheet are permanently secured to the inside surface of the binder cover. Photographs or other flat display materials may be inserted into the pockets formed between the backing sheet and the protective sheet through the elongated slits. The pockets are delineated so that they are aligned with the window opening in the cover.