Abstract: The present invention relates to sylvinite ore processing in the extraction industry and provides a resource-efficient method of separating potassium chloride and sodium chloride from polymineral sources comprising potassium chloride and sodium chloride and a vertical three-zone reactor for separating potassium chloride and sodium chloride from polymineral sources comprising potassium chloride and sodium chloride.

Abstract: An arrow head having two different movable blades with at least one blade interchangeably mounted in a pivotal or a fixed position with respect to a blade carrying body and a second blade that moves between a flight position and an impact position. A shaft is used to retain a corresponding blade in a pivotal or a fixed position with respect to a blade carrying body. When the blade is pivotally mounted, a bias force of a retaining member is preferably selected so that each blade remains in a normally closed position during flight of the arrow head and can quickly move to a fully open position upon impact or when a sufficient opening force is applied to the arrow head.

Abstract: A lighted nock and a method for operating the lighted nock. A nock body has a shaft extending from the nock body. The nock body can form a nock cavity and a light source can be positioned within the nock cavity. A ferrule can form a ferrule cavity. A power source can be at least partially housed within the ferrule cavity and at least partially housed within the nock cavity. The shaft can at least partially be mounted within the ferrule cavity. A bias element can be mounted between the light source and the power source. The lighted nock can be switched between an on condition and an off condition.

Abstract: A lighted nock and a method for operating the lighted nock. A nock body has a shaft extending from the nock body. The nock body can form a nock cavity and a light source can be positioned within the nock cavity. A ferrule can form a ferrule cavity. A power source can be at least partially housed within the ferrule cavity and at least partially housed within the nock cavity. The shaft can at least partially be mounted within the ferrule cavity. A bias element can be mounted between the light source and the power source. The lighted nock can be switched between an on condition and an off condition.

Abstract: A mechanical arrowhead or broadhead with pivoting blades that each pivot between an in-flight position and an impact position. One or more blades is each mounted within an opening of a body so that each blade pivots or otherwise moves with respect to the body. A stop element is secured directly to or with respect to the body. In the impact position, each blade contacts the stop element. In the in-flight position, each blade does not contact but rather is arranged or positioned away from the stop element.

Abstract: A system for constructing a load bearing surface includes a plurality of modular ground covering panels. Along at least one first side edge of each of the panels, the lower surface projects beyond the upper surface to define a lower peripheral tab. Along at least one second side edge of each of the panels, the upper surface projects beyond the lower surface to define an upper peripheral tab. The lower peripheral tab of one of the panels and the upper peripheral tab of another one of the panels overlappingly engage so that the upper surfaces of the panels are in adjoining relation to form the load bearing surface. A connector assembly includes a first connection element fixed to the lower peripheral tab, and a second connection element that releasably fastens the upper peripheral tab to the first connection element to secure the panels together.

Abstract: An imaging apparatus in accordance with the present invention comprises a hand-held, battery powered imaging device that provides: (1) an Identification Picture wherein an image of the patient's face is captured for identification purposes; (2) an Area of Interest picture wherein an image of the general area of interest on the patient is captured; and (3) a Subject of Interest picture wherein an image of the subject lesion of interest is captured. Two digital imaging systems, including a wide-angle (e.g. fisheye) imaging system and a macro (close-up) imaging system, are provided to allow for the simultaneous capture of AOI and SOI images thereby capturing an image that identifies the location of the lesion on the body and an image that comprises a close-up view of the lesion. A light source or flash provides illumination during the image capture phase.

Abstract: Wet suits used by water sports enthusiasts (e.g., surfers) are provided with the ability to be inflated during emergency situations to provide life-saving buoyancy and floatation aid. The inflatable wet suit will preferably include a torso section having a back pocket and a bladder assembly having an inflatable bladder bag and an inflator valve adapted for operative connection with a compressed gas canister positioned within the back pocket. A rip cord has one of its ends connected to the inflator valve and extends over a shoulder region of the torso section so that the other end thereof is graspably positioned adjacent a front portion of the torso section. A canister pouch within the back pocket of the torso section is provided for receiving the gas canister therein. The canister pouch includes a front wall attached to the torso section along side and bottom edges.

Abstract: Headphones include two common headphone speakers; and at least first and second interchangeable connectors adapted to be selectively and removably attached to the headphone speakers. The first connector includes a head harness structured to interconnect the two headphone speakers and the second connector includes a clip structure structured to individually attach to each of the headphone speakers and individually clip each of the headphone speakers to a strap adjacent a user's ear when in use.

Abstract: A wetsuit is provided with knee pads. Each knee pad comprises a ring of relatively stiffer elastic material extending around the kneecap of the wearer to provide compression around the kneecap of the wearer, and a central region of relatively less stiff elastic material that rests on the kneecap of the wearer. A compression strip extending along a region corresponding to the medial collateral ligament (MCL) of the wearer may also be provided. The wetsuit may provide enhanced proprioception feedback to a wearer in the subject region of the wearer.

Abstract: An apparatus and a method for providing at least two identities to a subscriber unit of a mobile telephone system. A subscriber identity module (SIM) is provided which is inserted into the subscriber unit for selectively activating an identity. The module may be activated through a keypad on the subscriber unit allowing a subscriber to enter a code for selecting a specific identity, or it may be a card having a separate program circuit on either end so that when inserted into the unit with its first end, a first identity is activated, and when inserted into the unit with its second end, a second identity is activated. Each selected identity may be allocated a separate directory number or all identities may be allocated a single number.

Abstract: A method for densifying a transmitter and a receiver network for mobile telephony. The network includes base stations that each have three cells that are mutually spaced at 120.degree. intervals about the base station. At least four different base stations have mutually different frequency sets in the cells, and base stations of different frequency sets are placed in a repetitive pattern, a so-called 4/12-frequency pattern. A first densification is achieved by causing a center base station that has a first frequency set, and that is located within a generally rhomboidal pattern of base stations, to change its frequency set to the same frequency set as the base stations located at the corners of the rhomboidal pattern. Additional base stations are positioned within the rhomboidal pattern, and the frequency sets of the additional base stations are selected so that the frequency or frequencies of their cells will differ from the frequency or frequencies of the cells of the nearest base station.

Abstract: A safety barrier for a subway or railway train including pairs of individual pivoting triangular gate members with a smooth wall panel at the base of the triangle. Each gate member is retractable within a recess in the end wall of the train car near a corner and are expandable to form a partial continuation of the side wall of the train car and to form with an adjacent barrier on the rear end wall a safety barrier to prevent persons from entering the gap between the cars from either side of the train.