Abstract: The self-raising work platform assembly is of the cantilever type in that it comprises a single tower, a sleeve surrounding and guided along said tower for up-and-down movement, power-operated raising means for said sleeve and a pair of horizontally-extending cantilever work platforms attached to said sleeve on opposite sides thereof. A second pair of oppositely-extending work platforms are disposed above the first pair and guy wires interconnect the work platforms.

Abstract: The present ventilating system is used for homes and buildings located in cold climate areas. The system includes a heat exchanger for extracting heat from the inside air discharged to the exterior and transferring said heat to the outside air admitted into the building. Blowers circulate air through the two paths of the heat exchanger and a motorized damper on the outside air path closes or opens the same. An integrated circuit and the following sensors serve to operate the system as follows: sensors detect the concentration of air contaminants, the humidity and the negative pressure of the air inside the building, while an outside air temperature sensor is also provided. When the level of air contaminants is above an adjustable preset level, the system operates in an inside air upgrading mode, namely air is circulated in both paths of the air exchanger; the same mode is used where humidity level is found to be excessive.

Abstract: A dual coupler assembly to be mounted to the back wall of an automatic clothes drying machine for use with the flexible hose fluidingly connecting the air outlet port of the drying machine to outside ambient air. A first coupler includes a cylindrical flue releasably anchored to the drying machine back wall, while a second coupler includes a cylindrical flue anchored to the laundry room floor; in one embodiment, the flues are both horizontal, while in a second embodiment, the flues are vertical. In a third embodiment, one hose coupler is slidable along a ground rail integral to the second hose coupler, the latter being fixed to the ground; an operative position is defined, where the cylindrical flues of the two hose couplers become coaxial to one another. In all cases, by displacing the dryer towards the second coupler, the latter will engage edgewisely the first coupler to become coaxial therewith, wherein fluid-through communication is established.

Abstract: An auxiliary bed extension U-shape plate destined to be edgewisely mounted to the cylinder bed of a sewing machine for increasing the planar work supporting surface thereof. The bed extension comprises a main, rigid, panel defining an inner recess for shapingly conforming to the cylinder bed, the inner recess of generally quadrangular shape. The web of the U-shape extension plate is telescopingly extensible and the two side legs thereof are extensible with add-on strips, wherein the extensible bed is adjustable in length as well as in width. The panel is supported edgewisely to the cylinder bed in generally coplanar fashion to the work supporting surface of the latter, whereby an enlarged, planar, generally coextensive, work supporting surface is obtained by the cylinder bed and extension bed plate.

Abstract: A puzzle formed of a plurality of puzzle pieces which, when assembled, create a self-standing, three-dimensional building structure. The puzzle pieces are of irregular, polygonal shape, but all puzzle pieces are flat, planar blocks. The blocks are releasably interlocked about a common plane with first, edgewise, complementary dovetail joints. For interlocking puzzle walls that are transverse to one another, second, straight U-shape, edgewise, complementary tenon and mortise joints are further provided edgewisely of those corner blocks for frictional interlocking. Thus, no separate pin, bent units or the like are required to anchor the corner portions of the three dimensional structure. The self-standing, enclosing structure is continuous, and show a continuous image on its external face.

Abstract: A side car for a motorcycle, wherein the side car box overlies the side car wheel directly thereabove. The lateral coupler between the side car and the motorcycle biases the side car wheel to incline interiorly of a curve, together with the motorcycle wheels, upon the moving vehicle taking a curve on a road. The side-car frame and box axially roll with the wheel, whereby the side-car center of gravity remains continuously within the plane of its wheel. As the motorcycle wheels progressively axially roll, their angular value relative to the vertical plane will increase relative to a second angular value corresponding to the roll of the side-car wheel relative to the vertical plane.

Abstract: An optical lens is mounted to the eyelash of the upper eyelid, hanging thereon in spaced register with the wearer's eyeball cornea. In a first embodiment, the lens is carried by a pair of endwisely hinged peg arms, taking in sandwich the upper eyelid eyelashes so as to be supported by the latter. The lens includes an edgewise flange releasably inserted into a mating cavity made in the underface of the peg lower arm. In a second embodiment, the lens is carried by another pair of integral, inner and outer peg arms, taking in sandwich the two opposite main walls of the upper eyelid and extending downwardly through the upper eyelid eyelashes. The inner peg arm is then surgically implanted subcutaneously to the upper eyelid and fixed by temporary stitches.

Abstract: A safety helmet comprises hard internal and external shells and a shock-absorbent insert. The internal shell forms at its lower edge and on the outside thereof an upwardly-opening trough in which the insert is inserted. The free edge of the trough joins with the lower edge of the external shell above the bottom of the trough. The two shells, together with the insert, form ventilation openings which are lined by portions of the two shells. In one embodiment, the internal shell lines all of the interior face of the helmet. In another embodiment, the main portion of the internal shell is embedded into the soft-bodied insert, so that it is mainly the insert that contacts the wearer's head, but for the rim portion thereof where the internal shell still surrounds the bottom edge of the insert.

Abstract: A toothbrush designed for use by orthodontic patients. The toothbrush head includes first conventional bristle tufts on one face, but further includes a lengthwise channel on the opposite face. The bottom face of this channel includes transverse second bristle tufts, and from the side faces of the channel depend interdigitating third bristle tufts, while third bristle tufts depend from the remainder of this face of the toothbrush head. Accordingly, the second and third bristles will be able to reach out small cavities about the braces worn by the patient's teeth, while the fourth bristles will clean tooth portions adjacent the braces. The teeth scrubbing action of the second, third and fourth bristles occurs concurrently in a single toothbrush stroke.

Abstract: A suspension system for compensating road-borne loads applied selectively to one end of a vehicle wheeled axle. The suspension system includes a pair of elongated rigid tubes, extending longitudinally over opposite sides of the wheel axle, and supported thereover by corresponding upright posts anchored to the intermediate section of the wheel axle. Each post and associated tube have a number of lateral interdigitating hollow ears, wherein the tube and post are pivotally interconnected by a lengthwise rubber shaft. A bottom frame beam from the vehicle body extends laterally outwardly of each corresponding tube, and includes a plurality of ears interdigitating with additional ears from the proximate tube for through engagement by another rubber shaft, for pivotally interconnecting the beam to the tube. In normal condition, each beam ear rubber shaft is downwardly offset relative to the post ear rubber shaft.

Abstract: The derailleur includes a relatively long, torsion-resisting bar extending below and generally along one of the two rear wheel-supporting bicycle frame members. The front end of said bar is held by a fastener secured to the bicycle frame adjacent the housing of the pedalling axle. The holder prevents the bar from rotating about its long axis. The rear end of the bar is movable transversely of the frame member by a remote control actuator. The rear end of said bar carries a drive chain idle transfer and a chain take-up device which serve to transfer the drive chain from one to another rear drive sprocket, while taking up the slack in the chain. The chain take-up device preferably comprises an elongated member supported by and extending alongside the bar, movable longitudinally along said bar and carrying at its rear end a drive chain engaging idle sprocket. The elongated member is biased rearwardly.

Abstract: A pair of lift carriages for supporting spacedly over ground, in a removable fashion, the front guiding skis of a snowmobile. Each carriage includes a frame, movably mounted over ground by tires, and a lever arm pivoted to the frame about an axis parallel to the rolling direction of the tires. The frame and the lever arm comprise hooks, to grasp and fixedly secure the ski when the lever arm is manually operated in an opertive position. The length of the hook is adjustable, so as to adapt itself to snowmobile skis of various widths. A look releasably locks the lever arm in its operative position.

Abstract: The sling includes a telescopic compensation bar, provided with two pairs of lever arms pivotally mounted to the opposite ends respectively of the compensation bar. The lever arms pivotally engage at their bottom ends the integral sling hooks of the transformer to be lifted. Each of the two parallel plates of the telescopic bar has an intermediate ovoidal slit, both slits slidingly engaged by a transverse shaft. The shaft depends from a yoke suspended to the hoist gear cable. The two ovoidal slits are not parallel, but rather disposed in X-shaped fashion. Hence, during lift, for a smaller transformer width, the compensation bar will automatically retract to a shorter overall length, so as to automatically and continuously maintain the lateral lever arms tightly and firmly against the transformer, whatever the dimensions of the transformer. Moreover, the greater the transformer weight, the larger the inward bias will be applied by the lever arms against the transformer.

Abstract: A trash compactor for use within the box of an automotive garbage truck, comprising: (a) a pair of conveyors arranged in a V-shape laid on its side, the first conveyor being horizontal and supporting and moving a trash load from a trash loading area, through a trash compacting area, to a compacted trash unloading area, the second conveyor being inclined upwardly. A plurality of crushing plates are axially carried by rotatable shafts transversely of each conveyor, for crushing trash at the trash compacting area which is at the apex of the conveyors V-trough. The top run of the second conveyor transfers compacted trash from the compacted trash unloading area to a trash storage area within the box; wherein compacted trash will by evenly distributed within the box trash storage area of the garbage truck, for efficient use of available space.

Abstract: The present window is particularly adapted to be installed on doors or the like and includes a glazing unit and an improved window frame to hold the unit in position and which is made of two frame sections and clips transversely adjustably interconnect both frame sections, whereby the frame adjusts to doors of different thicknesses while holding the glazed unit centrally of the door thickness. The clips are releasable to readily free at least one frame section, to permit replacement of a broken glazing sheet. Each frame section is molded in one piece or is an assembly of four extruded pieces. The glazing unit may consist of a single glass pane or of two glass panes each retained to a frame section or of a double glazing unit with an improved interspacing frame.

Abstract: A disinfectant effective against substantially all bacteria, fungi, bacterial and fungal spores, and viruses. The disinfectant composition consists of: from 60 to 90% by weight of potassium monoperoxysulfate; from 2 to 10% by weight of malic acid; from 2 to 6 % by weight of sulfamic acid; from 0.25 to 3% by weight of EDTA Na.sub.2 ; from 1 to 15% by weight of alkylated ether of polyethylene glycol; wherein a total of 100% by weight of the composition is obtained.