Dental cavity varnish compositions comprising a solution of nitrocellulose and toluene sulfonamide which wet and precisely conform to each "peak" and "valley" of the extensive microundercuts generated during cavity preparation. The varnish compositions are compatible with composite resin restorative materials.

There is herein described a microwave coupled-cavity filter having adjacent cavities defined by spaced end walls disposed in a tubular side wall, the end walls including at least one pair of oppositely disposed coupling apertures extending radially from the side wall toward the center of the associated end wall, and at least one of the associated pair of the coupling apertures containing a tuning screw extending through the side wall for precisely adjusting the coupling between adjacent filter c...

A tooth cavity is filled by applying to the walls of the tooth cavity a lining composition comprising a phosphoric or phosphonic acid ester compound containing at least one radical polymizerable vinyl group and at least one ##STR1## group, wherein said lining composition contains said phosphoric or phosphonic acid ester compound in a proportion of not less than 0.1 weight percent, as phosphorus, and then filling the remainder of the cavity with a dental filling material which comprises a polymer...

Described is a dual cavity multinozzle drop generator adaptable for use in an ink jet printer. The drop generator includes a first housing member with an inner cavity. The cavity converges to one side of the housing member. A cylindrical vibrating assembly is positioned within the cavity. The configuration is such that an inner cavity is formed between the outer surface of the vibrating assembly and the inner surface of the housing member. A second housing member having a converging ink cavity t...

The invention relates to a therapeutic aid suitable for the stabilization of limb bone fractures with surgery. Minimum three radially arranged reinforcing lamellae are extending from the pin shank, the width of which is decreasing from the pin head in the direction of the pin point. The longitudinal dimension reduction of the lamellae is sectional, but continuous within each section. Number of the lamella sections is minimum two, while at junction of the adjacent lamella sections recessed steps ...

Apparatus 10 discloses a reusable, washable split cavity fishing lure having a "banana-like" shape that assembles and disassembles by means of snap counter parts 28 and surgical tubing 20. The lure 10 encompasses a hollow cavity 32 having a plurality of scent releasing apertures 26 producing a powerful scent trail that attracts game fish 12. The cavity 32 may be filled with bait 36 or scent pad 34. By adjusting the leader 16 position to one of a plurality of leader apertures 14 the lure 10 is de...

A cavity enhanced optical detector comprising: i) a source of continuous wave laser light; ii) a high finesse resonant cavity comprising at least three spaced apart, high-reflectivity mirrors positioned to receive light from the laser light source; iii) at least one photo-detector for measuring the extinction coefficient of an analyte that is positioned in the resonant cavity; and iv) one or more additional photo-detectors for measuring the intensity of fluorescence emission and/or Raman scatter...

A package assembly for electronic components that allows for low-cost multiple cavities as well as a multiple compartment structure that allows more components in a smaller package size. In one embodiment the present invention is a multi-cavity package having at least one substrate forming at least one cavity with the substrate coupled to a shelf within the sidewalls of the package.

A cold or hot-forging heading die used in metalworking to form a "head" on the end of a metal rod is configured to provide two heading cavities formed in opposite ends of the carbide insert. The heading die of the invention comprises a hardened steel ring with a cylindrical carbide insert having a through bore with a first cavity machined concentrically with the bore in one end of the carbide insert. The die is then inverted and a second cavity formed in the opposite end of the insert. The secon...

An adjustable nasal dilation device including a first deformable body having one or more ribs able to engage opposing internal sides of a nasal cavity wall when in position and an adjustment member which expands the first deformable body to enlarge the nasal cavity.