The present invention relates to a hydrophone specifically designed for use in high pressure shock wave fields, comprising a thin piezoelectric polymer film secured to a rigid hoop structure, having a centrally located active element and two conducting leads extending from the active element on each side of the film. Under the action of high pressure shock waves, the conductive material which makes up the active area electrode and the conductive leads is slowly removed, altering the hydrophone's...

The concentration analyzer of the present invention is used to determine the cross-sectional concentration at multiple locations within a fluid line, such as an artery or vein, of dissolved substances within a moving fluid flowing through the vein which fluid consists of a first solution of unknown concentration.

A water ski having an elongated body of generally uniform thickness from its nose to its aft end, and including a body having a nose portion which inclines gradually upwardly, a forward body portion, and a rear body portion. The forward body portion has a width which is generally uniform and which is like that of a conventional water ski. The rear body portion extends rearwardly from the forward body portion and has side edges which diverge outwardly and rearwardly toward the rear end of the ski...

The multi-component intraocular lens for an eye includes a base intraocular lens, a cap situated on the base lens, a plurality of flanges for attaching the cap on the base lens, at least one sandwiched lens which is sandwiched between the base intraocular lens and the cap, and a plurality of projections holding the multi-component intraocular lens in place in the eye, wherein the base intraocular lens forms a platform on which to place the other components and the cap forms an enclosure holding ...

A low cost, high efficiency, dimmable electronic ballast for gas discharge lamps which can be controlled by a traditional phase controlled dimmer is disclosed. This ballast includes a push-pull, parallel resonant, self-oscillating inverter which is comprised of a DC base drive circuit and an adjustable, loosely coupled (between the primary and the secondary) transformer with a pair of magnetic shunts, and a LC filter which has both common and differential mode filter functions to reduce the high...

A carton blank including a reinforced hang tab. The hang tab includes a tab having an upper portion, a top edge defined by a fold line and a cutout formed in the upper portion. A foldover panel is connected to the tab at the fold line. The foldover panel has first and second side flaps and a middle bridge portion that define a notch formed in the foldover panel. Upon assembly, the foldover panel is folded along the fold line and secured to the tab so that the notch overlaps the tab cutout to for...

A method is provided for automatically rearranging a plurality of digital information units (DIU) arbitrarily designated in a first digital information file (DIF), each DIU containing data with artistic structure and characteristics, to create a plurality of second DIF's having different artistic structure and characteristics from the first DIF. The method includes a first process for automatically (1) reordering, (2) repeating, (3) creating alternate sequences of, (4) altering durations of, (5)...

A laundry receptacle with a flexible cover and handles comprises a structurally rigid receptacle portion and a flexible covering assembly. The rigid receptacle portion may be of a variety of sizes and shapes. The flexible covering assembly is comprised of a flexible covering material of varying sizes and shapes, which is wound around a cylindrical rod when not in use, and which is unrolled and extended across the open upper end of the rigid laundry receptacle and affixed to a circumferential fla...

The invention is directed to a device for cleaning the tongue to maintain positive oral hygiene and to control the proliferation of bacteria, plaque, tongue debris and film and the like. The device is used to scrape the tongue to remove bacteria, tongue debris and film and other particular matter from the tongue. It can be easily rinsed and reused, and, because it is manufactured from plastic, is easy and inexpensive to manufacture.

The present invention relates to an improved micro drop culture dish which is comprised of a substantially flat bottom surface portion and a wall portion integrally secured thereto. The bottom surface portion and wall portion are constructed of a rigid, transparent material. A plurality of circular wells having open upper surfaces are embedded into the substantially flat bottom surface portion as integral, concave indentations. These wells may also be cylindrical in shape with one end integrally...