Abstract: This limb bundler and trash bag holder comprises a foldable frame 10 having two pairs of sub-frame members 12 and 14, preferably identical, each such member having a lower leg portion 20, 20a, 30 or 30a, and an upper leg portion 22, 22a, 32 or 32a, and intermediate portions 24, 24a, 34 or 34a. Each of the sub-frame members 12 and 14 is pivotally hinged to the other for joint movement and pivotal foldability. Swiveling wheels 36-39 are affixed at the bottom of each leg portion 20, 20a, 30 and 30a and cap-like end protectors 40-43 are provided upon the extremities of the respective legs.A pair of foldable brace members 48 and 48a are attached to the sub-frame members 12 and 14 for restraint against excessive frame member distortion and to accommodate folding.A secondary brace and trash bag support 56 is connected between the first-mentioned brace members 48 and 48a. A twine holder and dispenser 64 is mounted to the brace 56 and a twine cutter 98 is attached to one of the frame members.

Abstract: The invention is a folding wheelchair (10) having as its basic elements a frame (12), a folding backrest (48), a removable headrest (60), a set of rotatable foot pads (66), a set of rotatable arms (54), a set of four wheels (76), and a set of foldable handles (84) carried on a pair of slidable and recessing arms (82). The wheelchair is rendered foldable via a spider mechanism (90) comprising a body (92) and four leg elements (94). The end portions (96), (98) of the leg elements (94) are pivotally secured to the frame (12). Folding and unfolding of the chair is carried out by use of a handle (114) which rotates a set of cams (118). When the handle is in the horizontal or "lock" position, the central portions (108) of the leg elements (94) are locked in the wheelchair "unfolded" condition. When the handle is in the vertical or "unlock" position, the leg elements (94) are free to slide along a set of guide slots (116), permitting the wheelchair to be folded.

Abstract: The invention is an aircraft power generation system which utilizes an induction-machine (G.sub.1) as a primary generator of variable-voltage/variable-frequency power. The induction-machine (G.sub.1) is directly driven by the engine (14) and is excited by an excitation-generator (G.sub.2) such that the induction-machine (G.sub.1) operates in a generating mode. A variable-speed drive (20), shown as a toroidal drive (30), controls the excitation frequency of the induction-machine (G.sub.1) such that the negative slip-frequency is controlled as a function of the input speeds (N.sub.1), (N.sub.2) and the electric load on the generator. Control of the toroidal drive (30) and thus speed (N.sub.2) is accomplished by a negative-slip control circuit which includes a drive control logic circuit (36), a proportional actuator (34), a control-start panel (48), and a steering mechanism (32).In another aspect of the invention, the induction-machine (G.sub.1) operates in a start-mode to start the engine (14).

Abstract: The invention is a staggered-coil and nose-torquer electromagnetic pulse deicing system and process for deicing airfoil surfaces. A plurality of upper and lower electromagnetic impulse coils (18) and (20) are arranged in a staggered geometrical array spanwise of an airfoil or wing (22). The upper coils (18) are arranged adjacent to and spaced from the upper wing skin surface (24) while the lower coils (20) are arranged adjacent to and spaced from the lower wing skin surface (26) so that when the coils are activated a torsional wave mode deformation of the skin (14) occurs. In another embodiment, a deflection wave mode deformation is generated in the skin (14) by activation of two electro-magnetic coils (42). In yet another embodiment, torsional movement of a blade mass balance element (64) in a helicopter blade brings about a twisting of the upper and lower skin surfaces (24) and (26) of the blade (60) to produce a torsional travelling deformation wave in the skin.

Abstract: The invention is a leading edge flap for an airfoil. The leading edge (24) is rotatably mounted to the airfoil (14). A first flap segment is (48) attached to the leading edge (24) and has an external aerodynamic surface (50a) adapted to form a portion of the bottom aerodynamic surface of the airfoil (14), when the flap (20) is in the retracted position. A second flap segment (60) is pivotally attached to the first flap segment (48) and is adapted to be retracted within a recess (80) within the airfoil (14). A link (70) is pivotally connected to both the second flap segment (60) and the airfoil rib structure (22) such that rotation of the leading edge (24) extends the first and second flap segments (48 and 60) from their retracted positions downwardly and forwardly of the leading edge (24), forming an aerodynamic extension of the airfoil (14).

Abstract: A vent assembly for rapidly depressurizing a compartment in an aircraft upon accidental depressurization of another compartment, including an apertured grille through which a circulation of return air normally passes, but which is mounted to swing into a hollow wall of the aircraft to pass a greatly increased flow of depressurizing air into the wall when desired. Two actuator plates are hinged together for differential pressure induced relative pivotal movement, and act upon such movement to swing the grille to its open or venting position. The hinged plates form a wall of a plenum chamber behind the grille, and the normal circulation of return air is so directed as to flow first through the grille, then through the plenum chamber, and then into the interior of the hollow wall beyond the plenum chamber to thereby assure positive and direct exposure of the plates to a change in compartment pressure.

Abstract: A wheelchair for the transportation of a disabled person throughout the cabin of a transportation vehicle and into a lavatory of the vehicle having a bench type toilet, the wheelchair having a seat stabilizer extendable therefrom to engage the top surface of the toilet, a translating seat assembly for the disabled person with a seat opening transferable over the toilet opening, and a slidable foot rest for the person during transportation on the vehicle and when using the toilet. To prevent sidewise tipping, stabilizer bars can be moved outwardly from the sides of the seat assembly to engage the top surface of the toilet.

Abstract: A construction for reducing the side lobe energy emitted from antennas, particularly horn antennas, and thereby attenuating unwanted coupling with adjacent antennas, the construction utilizes a continuous helical coil located on the interior surface of the antenna horn in order to progressively delay the current flowing along the horn wall by causing the current to follow a longer path than that portion of the wave which propagates well away from the wall, the number of coil turns being selected to cause the portion of the E plane which arrives at the horn aperture to be out of phase by approximately one-half wave length with the portion of the E plane propagated away from the horn wall so that it will cancel the E plane energy at the aperture.

Abstract: A modular panel of dual filament tungsten lamp switches with current limiting, fault indicating, continuous lamp filament testing, and remote control switching capabilities.In one embodiment, the dual filament, self monitoring tungsten lamps are mounted as switches in an array and identified by row and column, the panel including a drum assembly rotatable to a related one of the rows and carrying indicia indicative of the circuits associated with the lamp in each column in the selected row.In a second embodiment, the dual filament, self-monitoring lamps are mounted as switches in an array. Each lamp or the lens cover associated therewith includes circuit identifying indicia visible in daylight by normal contrast and illuminated sufficiently by the lamps for visibility in a dark adapted environment such as the cockpit of an aircraft at night.

Abstract: Laminated composite structural fitting is a joint fitting for transfer of mechanical loads from one member to another. The fitting has a bottom and an end, each for attachment to adjacent members and one or more sides to serve as a structural joining gusset. A flat sheet of composite material is shaped to form one bottom, one or more sides and two or more end pieces and is folded so as to form a laminated structure comprised of a plurality of interleaved layers arranged so that portions of the end pieces overlap at the corners between the ends and the sides of the composite structure to provide a multi-layer, strong corner.

Abstract: A drill is disclosed having a shroud structure extending about a chuck and drill bit at the forward end of the tool, to receive cuttings produced by the bit, and having a receptacle preferably carried at the rear end of the drill and to which the cuttings are withdrawn by a flow of air. In one form of the invention, the air movement is induced by aspirator action, while in another form a rotary air pump driven by the motor of the drill creates the suction effect. The receptacle may take the form of a cup detachably connectible to the body of the drill, and in the aspirator form of the invention the aspirating passages may be formed in an end wall of this cup. The shroud structure may include a sleeve disposed about the drill bit, and having a lug projecting inwardly to a position to contact and break up cuttings formed by the bit before they are withdrawn to the accumulation receptacle.

Abstract: An improved control system for the aileron segment of a combined flap and aileron (flaperon) wherein the flaperon, supported, extended and retracted by conventional means, is described. It consists of a splined shaft rotatably mounted on an aircraft wing, its longitudinal axis being substantially aligned with the extension and retraction path of the flap. A transfer gear box slidably engages the splined shaft and is supported by a roller assembly engaging a support track which is mounted in the wing and runs substantially parallel to the splined shaft. The transfer gear box incorporates gears to transfer rotation of the splined shaft, via a second angularly adjustable shaft, to an aileron segment rotation mechanism located on the flaperon at the axis of rotation of the aileron segment.

Abstract: A lens case for storing and transporting a photographic lens in a substantially environmentally sealed condition, the case including a tubular body portion bonded to an open end-encompassing base. Positioned interiorly of and disposed in spaced relation from the body is a tubular liner covered by a felt-like padding material. A foamed, resilient secondary shock-absorbing liner is usually provided interiorly of the liner and covering the bottom. The exterior of the body portion and its mated end are covered with leather or the like. A cover member is configured similar to the bottom portion and is also interiorly padded and exteriorly covered. Strap-type hinge means, including a belt loop, connects the body to the cover. Strap-type latch means is affixed to the top and adapted for latching to the body. Carrying strap attachment loops are also provided on the sides of the body.

Abstract: The invention relates to a method and apparatus for making hollow, resin-impregnated fibrous fabric articles. Specifically, it relates to a method wherein a reusable mandrel is made sufficiently rigid to receive a lay-up of the article to be manufactured. The rigidized assembly is placed within a female mold, derigidized and expanded to apply pressure from within, thereby forcing the lay-up against the interior of the mold. Heat is applied to cure the resin, producing an article having a very high degree of dimensional accuracy.

Abstract: An assemblage of a rivet for securing at least a pair of sheets or other members, wherein the rivet is formed with a cavity in its upset end of predetermined dimensions with respect to the sheets and the remainder of the rivet. The cavity preferably terminates in the thickness of the bottom sheet, thus facilitating rivet upset while providing maximum strength.

Abstract: A hydro-ski craft in which load alleviation is attained by reducing the effective wetted area of the planing surfaces at high speeds, and in which elongated flaps extending longitudinally of the craft are mounted to swing about longitudinal axes between generally horizontal planing positions and upwardly swung retracted positions. Spray control dams may be carried by the flaps to themselves automatically swing between inactive and active positions in response to upward swinging movement of the flaps.

Abstract: A process of precision forging of titanium or a titanium alloy in which the forging stock and a segmented die are first heated to forging temperature while separated, and are then assembled together and heated again to that temperature, with the stock being covered by a protective coating preferably containing glass grit, and the die sections being coated with lubricant. The heated die and contained heated forging stock are then inserted in a heated holder and the stock subjected to forging force, to partially but not completely deform the stock to the shape of the die cavity, following which the die and stock are separated and the stock allowed to cool, flashing is removed from the stock, the die is cleaned, the die and stock are recoated and then reheated separately and then together, and the stock is forged again to assume more closely the shape of the die cavity.

Abstract: A novel stiffened structural laminate formed by contacting at least one layer of a curable resin-impregnated fabric with at least one strip of cellular honeycomb core, disposing another piece of said curable resin-impregnated fabric over said strip of core, and curing said resin under laminating conditions to bond said honeycomb core to said fabric and produce a unitary laminate which includes said strip as a stiffening bead.

Abstract: Apparatus for equalizing the pressure between two compartments of an airplane in the event of sudden depressurization of one of the compartments, and including a closure panel disposed across an opening between the two compartments and functioning as either a blowout panel to be forced bodily from the opening upon development of an excessive differential pressure between the two compartments, or as a frangible panel which is shattered in response to attainment of the undesired differential pressure, to thus allow very open communication between the compartments preventing damage to a wall therebetween.

Abstract: A hydro-ski craft in which load alleviation is attained by reducing the effective wetted area of the planing surfaces at high speeds, and in which elongated flaps extending longitudinally of the craft are mounted to swing about longitudinal axes between generally horizontal planing positions and upwardly swung retracted positions. Spray control dams may be carried by the flaps to themselves automatically swing between inactive and active positions in response to upward swinging movement of the flaps.