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US 4,054,058 AGranted
Device for indicating direction of barometric pressure trends
OwnerJohn Protzinventor
Life of this patent
Estimating the term…
Abstract
Direction of barometric pressure trend is portrayed by my invention. Changes in barometric pressure are amplified by a linkage member and converted into a signal by trend means to discern an increase or decrease in trend. Motor means receives the signal from trend means and activates display means to show the direction of barometric pressure trend.
Claims9
A device for indicating barometric pressure trends, comprising:
- a. a housing;
- b. means for measuring barometric pressure mounted on the housing;
- c. a linkage member connected to one end of means for measuring barometric pressure;
- d. display means for indicating direction of barometric trend, mounted on the housing;
- e. trend means for determining barometric pressure trend, mounted on the housing and controlled by the linkage member, that creates a signal when trend direction changes;
- and
- f. motor means for energizing display means, connected to the trend means and display means in such a manner that the signal from trend means is translated by motor means to energize display means so that display means indicates direction of trend of barometric pressure.
4 more elements
Dependencies are inferred from the claim text.