Abstract: By means of having taken advantage of certain physical properties of solids with a manufacturing process of incrementally deforming hollow links, there is produced new hollow simulated diamond cut multifaceted jewelry rope chain, which results in a product weighing up to 60% less than its solid counterpart, but which in its aesthetic looks is similar to solid diamond cut jewelry chains, and furthermore, with a hardness greater than the same hollow chain that has not gone through the process. This invention presents a new diamond cut chain, which costs a fraction of the price of a solid chain aesthetically similar, and in which the chain may vary in cross-section, such as forming a square or a hexagon.

Abstract: A device for performance of ligand-receptor assay methods for determining the presence of a liquid. The preferred ligand-receptor pair are antigen-antibody pairs. The device has a membrane having the receptor physically bound to its surface. The membrane is disposed at the top of a body member, and is affixed thereto by means for attaching, which is preferably a cap with a funnel depression. A porous means is disposed below the membrane to absorb liquid. Substantially all of the top surface of the membrane is exposed. The receptor site typically occupies only a portion of the top of the membrane, and in a preferred embodiment, a funnel member releasably attaches to the cap, thereby conveying the sample through only that area of the membrane having the receptor site. The device has a piston means disposed inside the body member, and in air-tight seal with the body member. Means to actuate the piston means are disposed outside the body member.

Abstract: An apparatus for assembling antibody testing devices for use in conducting biotests which utilize a powder fluid absorbing material to fill the housing of the antibody testing devices. The apparatus has several stations at which the various assembly steps take place. At the first station, lower housing portions of the antibody testing device are loaded onto a conveyor belt. At a second station, the lower housing portions are loaded with a fluid absorbing powder. At a third station, the powder loaded lower housing portions are engaged with a slotted indexing carousel wheel and are carried away from the conveyor belt. At a fourth station, the liquid absorbing powder in the lower housing portion is compressed therein. At a fifth station, a disk of filter material is placed atop the liquid absorbing powder loaded into the housing portion. At a sixth station, caps carrying membranes which have been spotted with receptors are engaged with the powder filled housing portion.

Abstract: Prescription eyewear is disclosed comprising a non-prescription one-piece plastic lens shield within the periphery of which generally central apertures have been formed, and prescription lenses are permanently affixed within said apertures. The lens shield are generally obtained from optically defective lens shield material since apertures are to be cut out centrally from the lens shield. Alternatively, the non-prescription lens shield may be optically correct and, of course, may still be the source of the prescription eyewear.

Abstract: A refill eraser comprises at least one refill member. Each refill member includes a holding barrel having a partition portion and a plurality of rotation-preventive ridges formed on an inner peripheral surface of its front portion, and an eraser body having a generally frustro-conical front end portion, a cylindrical intermediate portion, and a cylindrical rear end portion. The eraser body is press-fitted into and held at its rear end portion and intermediate portion within the front portion of the holding barrel with its rear end portion and intermediate portion engaged with the ridges and with its rear end supported by the partition portion. The front end portion of the eraser body protrudes from the front end of the holding barrel. A plurality of the refill members are refillably held within an elongated tubular shaft. A front end of the eraser body located on the foremost end protrudes from a front end of the tubular shaft.

Abstract: This disclosure is directed to a novel shoe tongue construction wherein the tongue is made as an integral extension of preferably the heel portion of the shoe. The tongue may also be an integral extension of the quarter. The tongue construction provides greater comfort to the wearer of the shoe than do conventionally mounted tongue constructions because the tongue is integrally formed with either the counter or the quarter of the shoe rather than being stitched only to the vamp. This construction is also more economical to make because cutting and stitching requirements are reduced.

Abstract: A contrast enhancing agent for magnetic resonance images having a chelating agent, which can be bound to metals having at least one unpaired electron. Examples of such chelating agents include 3,6,9-tris(carboxymethyl)-1, 11-bis(dimethylamine)-3,6,9-triazaundecane; 3,6,9-tris(carboxymethyl)-1, 11-bis(diethanolamino) 3,6,9-triazaundecane; 3,6,9-tris(carboxymethyl)-1, 11-bis(tris(hydroymethyl) aminomethane)-3,6,9-triazaundecane; 3,6-bis(carboxymethyl-1,8-bis(N-carboxymethylglucosamino)-3,6-diazoctane; DTPA-bis(galactosamide), DTPA-Bis(glucosamide), DTPA-Bis(pyridoxamide), and poly-(DTPA-ethylenediamide).

Abstract: The invention is a total knee endoprosthesis with a fixed flexion-extension axis throughout all degrees of flexion and extension of the knee. The endoprosthesis has a femoral component with spaced apart medial and lateral condyle portions which slidably seat on a tibial implant portion. The fixed flexion-extension axis is directed inferiorly and posteriorly from the medial condyle portion to the lateral condyle portion and is offset from both the transverse and coronal planes equally by 3.0 to 3.8 degrees. A longitudinal axis through the tibia allows the tibia to rotate nonorthogonally and anteriorly of the flexion-extension axis. A patellar groove which is perpendicular to the flexion-extension axis. In the patellar groove slides an optional patellar component or the natural patella.

Abstract: A water operated rotatable scrubbing brush device which generates considerable scrubbing torque, without the use of gearing or diverting the majority of the water driving the device away from the brush and out of the device. The device has a two-way water flow valve that permits the operator to select between a rotatable scrubbing brush mode, wherein liquid cleaning solution will also be dispensed to the scrubbing brush, and a rinse mode, wherein clean rinse water, without cleaning solution, will be dispensed without driving the scrubbing brush, to rinse off the item being scrubbed.

Abstract: When an electric motor is rotated normally, a left-hand driving wheel is rotated normally by a drive gear through a large gear, a left-hand small gear, and a left-hand driven gear, and a right-hand driving wheel is also rotated normally through a right-hand small gear, a swing gear, an intermediate gear, and a right-hand driven gear, thereby causing the vehicle toy to run straight. When the electric motor is switched to a reverse rotation, the left-hand driving wheel is rotated reversely, and the swing gear is brought into engagement directly with the right-hand driven gear to rotate the right-hand driving wheel normally. As a result, the vehicle toy makes a continuous turn at a small radius of rotation.

Abstract: A slip resistant shoe lace and a method to make same. A slip resistant shoe lace is provided by weaving strands having a conventional frictional coefficient with at least one strand having a higher frictional coefficiency, where the high-friction strands do not extend beyond the outer perimeter of the lace. The high-friction strands can be made by impregnating conventional strands with friction-enhancing substances such as resin or rubber, by using a unitary strand made of material such as rubber or soft plastic, or by using strands with grooves or serrations formed on its outside surface.

Abstract: The invention is a lacing system for shoes employing a plurality of strips, wherein the lower ends of the strips are rigidly attached to the lower portion of the shoe and the upper portion of the strips have a lacing ring fixed thereto. The upper ends of the strips are slideably retained by loops on the upper of the shoe, and the middle portion of the strips are unattached to the quarter of the shoe. The strips transfer the lacing force evenly along the quarter to mold the quarter of shoe evenly to the wearer's feet.

Abstract: A surgical cement of high biocompatibility, useful in orthopedic, maxillofacial and dental applications, comprising a calcium alkali phosphate cement with relatively high surface pH of about 7 or higher, and having a wide variety of chemical compositions, permitting flexibility in controlling the bioresorption rate by changing the chemical composition of the cementing powder.