| Patent Number |
Title Of Patent |
Date Issued |
| 5399171 |
Intravenous metering monitoring device |
March 21, 1995 |
| The present invention provides an improved, low cost method and apparatus for monitoring the intravenous metering of fluids to a patient. The present invention provides a strain gauge which is preferably a balanced metal beam. Conditioning circuitry is provided which has as input the |
| 5279556 |
Peristaltic pump with rotary encoder |
January 18, 1994 |
| A rotary encoder comprises a rotary plate having a plurality of primary slits defined in the rotary plate in a circular row coaxial with the axis of rotation of the rotary plate. The rotary plate also has at least one reference slit defined therein at a position radially of the circular |
| 5105140 |
Peristaltic pump motor drive |
April 14, 1992 |
| The present invention provides a drive signal for a peristaltic pump motor. A first circuit is provided which generates a first series of pulses at a given frequency. A second circuit is provided which generates a second series of pulses having a frequency higher than the frequency of th |
| 5102392 |
Air detector for use in infusion pump |
April 7, 1992 |
| An air detector according to the present invention utilizes a unitary type sensor for detecting air bubbles or columns in an infusion solution flowing through a tube. Because of a unique design for a tube-receiving groove and a cooperating abutting member, the difficulty in loading a tub |
| 5068586 |
Steeping motor driving apparatus |
November 26, 1991 |
| A stepping motor driving apparatus includes a stepping motor and a pulse output circuit for outputting drive pulses for driving the stepping motor. A pulse generator generates further pulses which not only have frequency higher than that of the drive pulses but are capable of a variable |
| 5003239 |
Peristaltic pump monitoring device |
March 26, 1991 |
| An encoder wheel (60) is provided for monitoring a peristaltic pump (20). The encoder wheel (60) provides a plurality of equispaced sectors (62) and a reference sector (66) provided at the outer radius of the encoder wheel (60). A vane slit (68) is provide radially offset from the sector |
| 4554678 |
Wireless receiver having crystal filter at outputs of preamplifier |
November 19, 1985 |
| A wireless superheterodyne receiver is provided having an antenna for receiving wireless transmissions, a preamplifier having an input connected to the antenna and an output, a crystal filter having an input connected to the output of the preamplifier and an output, a demodulator having |
| 4229827 |
Single voltage controlled oscillator modem |
October 21, 1980 |
| A modem for transmitting data over one frequency and receiving data over another frequency is disclosed having an oscillator for generating a first signal, a voltage controlled oscillator for generating a second signal, a mixer for mixing the first and second signals to provide a mixer o |
