Other

Frantz Medical Development, Ltd.

Adams Manufacturing Company

Lawrence M Sears

Mark G Frantz

Mark R Honard

Thomas J Pavsek

Ying Shen

Terrance C Slaby

A medical pumping system has a supply tube (2), an outlet tube (6), a readily sterilizable, disposable cassette (3) connected to the tubes and engaged with the pump, and means (22,24) such as a motor-driven piston, for intermittently applying pressure to the cassette. The pumping system features a display and switch means (9, 10) on a front panel thereof, a pressure sensor (28), an optical fluid presence sensor (19), and a microprocessor (20) metering the volume of fluid pumped through said cassette (3), monitoring output signals from said sensors (18, 28), controlling the motor-driven piston in accordance with settings entered via said switch means (9,10), and directing output data to said display means (8). The microprocessor has a stored program for performing SET RATE, RUN, HOLD, VOLUME FED, and CLEAR VOLUME functions. The cassette includes a hydraulically self-actuating inlet valve (44) communicating with the supply tube (2), a hydraulically self-actuating outlet check valve (42) communicating with, and preventing backflow from, the outlet tube (6), a hollow, resilient compressible member, such as a bellows (34) having an interior communicating with the inlet and outlet valves, and a support structure (30,36,38) securing together the tubes, valves and bellows in operating relation. Preferably, the inlet and outlet valves are a unitary element.

Pump cassette and method of pumping

Pump system for enteral/parenteral fluid control and delivery

A system for actuating an electrical valve from a remote location with a battery includes an energy storage means for actuating the valve, a charging circuit for charging the energy storage means from the battery to a sufficient potential to actuate the valve, detector means for sensing a signal indicative of a desire to actuate the valve and for actuating said charging circuit and switch means for connecting the energy storage means to the valve to actuate the valve when the energy storage means is charged to a sufficient potential.

System for actuating an electrical valve from a remote location

Trip devices are disclosed for attachment to existing utility meters to detect revolutions of a dial arm of the meter. Two embodiments are disclosed, each including a spring-biased shaft extending through a base and a shoe on the end of the shaft. As the dial arm rotates, it catches and deflects the shoe, thus rotating the shaft. The shoe then slips off of the dial arm and returns to its original position under the urging of the spring. In one embodiment, shaft rotation is detected using a magnet and reed switch arrangement. In the other a mercury switch is instead used.

Method and apparatus for sensing rotation of a dial arm of a utility

Electrostatic air cleaner apparatus is disclosed for use in conjunction with existing space conditioning apparatus which includes a transformer providing a low voltage (typically 24VAC) power signal. The apparatus includes a power supply which is adapted to be coupled to the output of the transformer for providing a low voltage DC power signal. A high voltage generator and regulator is included which is powered by the low voltage DC power signal. The generator and regulator includes a flyback transformer arrangement which generates a high voltage DC signal suitable for energizing the collector and ionizer stages of an air cleaner assembly. The generator and regulator also includes closed loop feedback for regulating the amplitude of the high voltage DC signal so that it remains at or near the optimum amplitude regardless of variations in the amplitude of the low voltage power signal supplied by the existing low voltage transformer. The apparatus also includes an air cleaner assembly to which the high voltage DC signal is applied.

Electrostatic air cleaner and high voltage power source therefor

Retrofit apparatus (38) for attachment to a utility meter (10) to detect revolutions of a dial arm (34) of the utility meter. A piezoelectric crystal (42) is provided against which a striker arm (52) abuts. The striker arm is rotatable on an axle (50) and is therefore movable relative to the piezoelectric crystal. A spring (54) is tensioned so as to resiliently bias the striker arm against the crystal. A shoe (62) is also mounted on the axle and is disposed in the path of rotation of the dial arm so that once each revolution the dial arm engages, deflects, and releases the shoe, thereby causing the striker arm to withdraw from and then snap back against the piezoelectric crystal. The crystal produces an electrical pulse in response. The pulses are counted by a counter (82) to provide a count indicative of utility usage.

Growing community of inventors

Shaker Heights, OH, United States of America

Lawrence M Sears