Abstract: An orthopedic traction apparatus includes in coaxial arrangement, a first tubular member anchored to a operating table or other stationary structure supporting a patient, and a second tubular member telescopically moving within the first one. A hand-crank and jack-screw mechanism is used to vary the position of the second member in relation to the first member. A tensiometer is provided at the distal end of the second member proximate a fixture adapted for attachment to a part of a patient's body. The tensiometer is based on a compressible, calibrated coil spring and is provided with a vernier scale for convenient and precise adjustment of the traction force. Alternately, the tensiometer uses a load-cell driving a digital read-out.

Abstract: A portion of a mask or helmet covering a user's ear has an aperture covered by a sound-collecting and sound-transmissive protector swivelingly mounted thereon. The protector has a substantially parabolic reflector surface oriented substantially perpendicular to the protector's axis of rotation which magnifies sounds arriving from a particular angular direction and directs the sound through a plurality of holes axially penetrating through the protector from an outer to an inner surface. A user manipulable actuator nib extends axially outwardly from a peripheral portion of the outer surface of the protector allowing user control of swiveling movement.

Abstract: An orthodontic bracket for securing an arch wire to the labial area of a tooth comprises a plunger having a lateral notch dimensioned to capture a section of the arch wire. A dual-positioned detent mechanism alternately holds the plunger in a labial, open position exposing the notch and a lingual locked position wherein the section of arch wire captured by the notch is securely held in a diametral slot cut into the bracket.

Abstract: A directional small part transporter and sorter simultaneously imparts upon a part-carrying platen reciprocating movements along one or two horizontal axis perpendicular to each other and a third vertical axis. A stack of slidingly coupled carriages are each independently driven by a stepping motor. Each motor is coupled to a carriage by means of a mechanism that translates the rotation of the motor into a linear translation of the coupled carriage by means of a worm screw or transmission belt. An electronic module controlled by a data processor allows for adjustment of the duration, amplitude, frequency and phase relationship of the three periodical movements of the platen. A part reservoir along the platen can be either raised to deliver parts onto the platen or lowered below the platen ledge to receive parts off the platen. The transporter and sorter may be used in connection with various electronic component manufacturing processes.

Abstract: An intriguing and educational display structure (1) appears to be spinning upon itself without any apparent drive mechanism, power supply or bearing. The structure comprises two concentric hollow spheres (3, 5) spaced apart by a transparent fluid (6). The outer sphere is totally transparent, immobile, and may rest on a tripod (2) or other type of support. The inner sphere may be partially transparent or translucent and carries over its surface, a design such as a map of the world (7). The inner sphere rotates within, and independently from, the first outer one. The internal, that is self-contained, drive mechanism uses either a conventional electrical motor (8) with its own field winding and commutator, or one made of a rotor comprising a cross-array of electromagnets (AC, BD) that interact with an ambient magnetic field such as the earth magnetic field.

Abstract: A container for holding and dispensing articles such as beverage cans and bottles wherein a first set of said articles are laid horizontally in a row over a slanted floor, and are retained therein by a vertically movable plate resting upon said row. A barrier projects downwardly from the front edge of the plate against the lowermost article in the first set and prevents the entire set from rolling toward an opening at the base of the slanted floor. A second set of articles is similarly positioned upon the plate. The weight of the second set prevents the plate and barrier from moving upward and freeing the first set until all the articles in the first set have rolled toward the opening. Additional plates and sets of articles can be superimposed above the first and second sets. A control gate is provided to allow the articles to be dispensed one by one through the opening.

Abstract: A belt caddy for carrying a number of cylindrical paintball containers during a war game. The outer face of the belt is lined with a first type of hook-and-loop fabric fastener. Each of the containers is surrounded by an elastic sleeve mounting over approximately half of its longitudinal outer surface, a first patch of a second type of hook-and-loop fastener and, over the remainder of the outer surface, the same type of hook-and-loop fabric fastener as the web. The containers can be bunched together in a pack and secured to the belt by interconnection of the hook-and-loop fastener materials. A pair of cooperating straps are used to further cinch the pack of containers to the belt.

Abstract: In a spatial coordinate measurement system using an articulated arm and associated electronic data processor, the workpiece having locations to be measured is held by a carrier rotatively supported about an axis. An angular encoder feeds into the processor the relative orientation of the carrier about the axis. The processor virtually translates the origin or point of reference of the arm as a function of the orientation of the carrier so that the carrier and workpiece can be rotated to place the location to be measured in close proximity to the sensing probe of the arm without affecting the relative coordinate measurement. The extent of movement of the arm around the workpiece that would be necessary if the piece remained stationary throughout measurements of all locations, is substantially reduced.

Abstract: A safety cover installed over an electrical wall outlet comprises two quarter-shell segments hinged about their median sections to a base. When the two segments are clamped together, they form a protective hood over the outlet. When separated, the segments fall away from the outlet to provide free access to it. A sleeve surrounding the base can be slid over the the root of the shell segments to lock them in their closed position. The mating edges of the clamped segments are indented in their center section to accommodate the electrical cord of a jack plugged into the outlet.

Abstract: A device for quantitively collecting, preserving and mailing a specimen of fecal or other biological matter for later analysis comprises a tubular vessel defining a chamber closed at one end by a plug and restricted at the opposite end by a narrow aperture. A stopper for closing the open end of the vessel extends into a stick having indentations capable of retaining some of the biological matter. The stick intimately engages the aperture so that the amount of matter introduced into the chamber is limited to what is carried in the indentations. The shank of the stick seals the aperture once the stopper has been screwed into place. The plug mounts a breakable hollow nib and is installed after introduction into the chamber of a metered volume of preserving solution. A cover caps the plug and nib to provide additional sealing of that end of the vessel.

Abstract: A roller skate (10) has a light (22) housed in a forward tip recess of a slab (13) of synthetic material interposed between a boot (11) and the roller truck (12). A lighted toggling push-button switch (10) that espouses the back contour of the heel, can be activated by taping the back of the heel against the floor or any other stationary structure. The light comprises a battery compartment occupying the deepest area of the recess. A lens contoured to blend with the outline of the sole tip can be releasably snapped against the frontal opening of the battery compartment. A bulb-mounting assembly is held sandwiched between the lens and the battery compartment. The lights in the contoured tip lens and heel switch can be seen from either side of the skate.

Abstract: An ammunition magazine for dispensing uniformly-sized spherical projectiles such as paintballs into a gun adapted to shoot said projectiles has a generally oblong, closed container having a channel defined in its bottom from a distal axial end to an outlet port located in a lowermost, median portion of the container. The proximal portion of the container floor defines a slanted platform which extends above and beyond the outer port so that projectiles are urged by the platform toward the distal end of the channel from where they roll under the platform and into the outlet port. A helicoidal stirring arm projects from a distal area of the platform obliquely over the exposed part of the channel. The steering arm is driven by an electrical motor controlled by a switch conveniently mounted on the side of the magazine. The arm spins in a ball-uplifting direction to break any jamming of the balls above the channel.

Abstract: A fluid specimen collecting and testing device has two chambers each sealable by a lid. A first chamber has a portion of the specimen volume for carrying out a field test. A second chamber preserves an untainted portion of the fluid for more rigorous laboratory testing. A volume of fluid is temporarily allowed to pass from one chamber to the other through a sealable passageway. One lid carries one or more chromatic graphic reaction testing strips.

Abstract: A refrigerated, open-top food pan that can be used as a counter top buffet, as a store self-service display or as a kitchen food ingredient holder, has two cooling systems. The first one discharges a blast of cool air through the exit ports of an manifold peripherally mounted near the upper rim of the pan. The cooled air is generated by a bwer taking air from a grated port in the inner side wall and forcing it through a chamber housing a cooling expansion coil. A secondary cooling system has an expansion tube in intimate and circuitous contact with the bottom and side wall of the pan.

Abstract: A garment pocket has a flap cover secured to the front piece by means of cooperating straps of hook-and-vane cloth fastener. One of the upper corners of the flap cover is diagonally cut-away to expose a small part of the pocket opening, providing a convenient way to clip and quickly retrieve a pen or similar device.