A method and system for electronically generating and displaying two-dimensional perspective images which visually define three-dimensional objects by providing electrical signals representative of the surfaces of an object, converting, ordering and utilizing the signals to identify and display only visible surfaces and to control brightness along the visible surfaces of the eventual electronic display. More specifically, units of the electrical signals define surface portions of the object. The...

A high frequency phase generator comprising an oscillator, operating at eight times the desired frequency. A first set of flip-flop circuits divides the frequency down to the desired frequency. A second set of flip-flop circuits is provided with clock signals at the oscillator frequency and is connected so that the first flip-flop circuit of the second set is fed by the output of the first set and each subsequent flip-flop circuit in the second set is fed by the output of the preceding flip-flop...

A device and method for controlling the rate of fluid flow through an intravenous infusion tube or the like by varying the dialation of an opening in a diaphragm, and maintaining the dialation without constant attention, the dialation being controlled by the relative position of a male fitting within a female fitting.

A bilateral immobilization support is disclosed for placing and retaining the arms of a patient in an overhead position during patient examination, diagnostic procedures and/or radiation therapy. The adjustability of the wrist and upper arm supports carried upon a base provides for immediate accurate sizing adjustment in location consistent with the needs of the patient and continuing comfort for the duration of use. The initial settings of the support are visually observable and readily reprodu...

A dual drive mechanism for medical/dental chair comprising a single motor drive and a pair of linearly driven shafts. In one embodiment, the dual drive mechanism provides a self-locking, reliable and easily maintainable system for vertically displacing one portion of a medical/dental chair relative to another portion of the medical/dental chair. In other embodiments, the dual drive mechanism drives both shafts in a single direction to increase drive power, engages each shaft to a common part and...

A multiple stage anti-microbial apparatus and methods are disclosed, which provide capacity to process a handpiece between patients including soaking, de-overburdening via use of ultrasonic energy, treating with exposing to anti-microbial heat, accommodating coordinated though separate autoclaving, and accommodating contiguously packaging in a heat shrunk sheath after multiple anti-microbial treatment to prevent later contamination through the air. The distal portion of the heat shrunk sheath is...

A fencing system which utilizes coated steel to simulate wrought iron fencing and which comprises prefabricated sections of fence comprised of steel, the length of which can vary, ground or floor-anchored post members to which the fence sections attach using novel connectors. An ornament adorns each top vertical member of each fence section. Novel fence gate structure is also disclosed.

An illumination system for a mountain bicycle is disclosed. The disclosed system comprises a long-term, high power battery pack encapsulated in an impervious jacket of compressible material, which combination is reliably and securely compression-fit into an open water bottle cage, in lieu of a water bottle, and electrically connected to a source of artificial light.

A novel, long lasting prosthetic heart valve compatible with implantation in a human natural heart valve annulus. The prosthetic heart valve comprises a trileaflet heart valve apparatus which in form, dimension, and function resembles a human trileaflet heart valve, but which is formed of synthetic resinous material. A seamless supporting frame capable of annular deformation and limited perimetric expansion during each heartbeat is totally enveloped in an essentially biologically inert cylindric...

A method for carving wood is disclosed which uses a synthetic resinous adhesively backed film template for accurate, artistic and time efficient production of carvings.