Abstract: An electronic dice game comprising a series of electronic circuits which are connected together such that various dice games can be played with an electronic display board wherein such games previously could only be played with cube-shaped dice and the present device provides games which are played in a realistic manner and allow roll counters with whole dice features and various game selections can be made.The simulated faces of a plurality of die are displayed using seven PIP indicators for each die.

Abstract: An improved peristaltic pump which provides for rotating the head an offset angle relative to the rotor center and which includes a pivoted housing structure that can be adjusted by a spring loaded set screw so as to vary the quantity of material pump. By adjusting the set screw, the spacing between the head and the rotor can be adjusted to vary the volume of the pump. A one-way clutch assures that fluid cannot be supplied in a reversed direction through the pump.

Abstract: Apparatus and method for applying aspiration, irrigation, medication and ultrasonic power and dwell time to biotissue for surgery and treatment wherein the pressure for both aspirating and irrigating is precisely and accurately maintained by the use of a differential valve and a control reservoir which is generally much larger than the biotissue cavity to be operated on and wherein the pressures for irrigation, aspiration, medication and the application of the amplitude and dwell time of ultrasonic energy can be precisely controlled, externally, to the patient.

Abstract: Apparatus and method for applying aspiration, irrigation, medication and ultrasonic power and dwell time to biotissue for surgery and treatment wherein the pressure for both aspirating and irrigating is precisely and accurately maintained by the use of a differential valve and a control reservoir which is generally much larger than the biotissue cavity to be operated on and wherein the pressures for irrigation, apiration, medication and the application of the amplitude and dwell time of ultrasonic energy can be precisely controlled, externally, to the patient.

Abstract: Apparatus and method for measuring and indicating the true power in watts supplied to an ultrasonic handpiece and also to indicate the accumulative power applied to the handpiece.

Abstract: A machine for performing surgery and treatment utilizing ultrasonic energy wherein so as to obtain precise control of the operating frequency and eliminate unnecessary heating and loss of power the hand tool as well as the generator and power supply are designed after establishing the designed criteria of the particular medical tool required thus allowing coupling of energy into the tool in a very efficient manner. Means are also provided for assuring that dangerous transverse modes of the instrument used will not occur which can cause injury to patients. Several unique additional safety and construction features are also shown.