Self-balancing recorder

Details Self-balancing recorder Self-balancing recorder

1977-02-10

1978-05-23

Miller, Jr., George H.

Recorders

Rebalancing systems

346145, G01D 900, G01D 1500

Patent

active

040913899

ABSTRACT:
A simplified, compact, inexpensive portable self-balancing recorder to be used in the monitoring of data relating to pollution and/or environmental protection. The recorder is about 650 cubic centimeters in volume and weighs about 5 kilograms; it comprises a minimal number of constitutent components and may be operated without certain costly options (e.g. alarms and controls) if desired. The recorder uses printed circuit board circuitry to monitor and process input signals from the measuring points, and these components can conveniently and easily be removed from the recorder for adjustments or replacements. The recorder includes means for adjusting the ink pressure according to recording conditions and provides an inking system with an hermetically sealed pen point to prevent introduction of bubbles into the ink.

REFERENCES:
patent: 2113748 (1938-04-01), Ross et al.
patent: 2150502 (1939-03-01), Harrison et al.
patent: 2519537 (1950-08-01), Barnes, Jr.
patent: 2942927 (1960-06-01), Keyser
patent: 3148014 (1964-09-01), King, Jr. et al.
patent: 3209363 (1965-09-01), Virbila
patent: 3370300 (1968-02-01), Gilovich et al.
patent: 3394384 (1968-07-01), Hines
patent: 3798659 (1974-03-01), Hasebe et al.
patent: 3918066 (1975-11-01), Fujita et al.

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