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US 4,379,337 AGranted
Metric computer
OwnerIlda O'Bisoinventor
Life of this patent
Estimating the term…
Abstract
The present invention discloses a device which will automatically display the metric equivalents and their appropriate dimensional designations of any given metric measurement. In the preferred embodiments shown, the device may be either an electronic keyboard-display console apparatus or a mechanical device using printed rolls.
Claims2
An apparatus for determining the metric equivalents of a given metric measurement comprising:
- (a) a first set of display means arranged on a console to display a plurality of metric units within a given desired parameter selected from the parameters length, liquid and mass or weight;
- (b) a second set of display means arranged on said console to display a given known numerical measurement as expressed in one of the metric units displayed in said first set of display means as well as the numerical equivalents of said measurement as expressed in the remaining metric units displayed in said first set of display means;
- said second set of display means being arranged such that each of the numerical equivalents is displayed in visual conjunction with the metric unit corresponding to said numerical equivalent;
- said first set and second set of display means comprising rows of windows with metric units and numerical measurements, respectively, appearing therein;
- (c) parameter selecting means comprising an endless web having a plurality of rows of printed metric unit designations, said printed metric unit designations arranged so as to be aligned with the first row of display windows in said first set of display means when moved in place behind the windows, and means for moving the endless web in place behind the first row of viewing windows for viewing therethrough, each said row of printed metric unit designations being limited to metric units within a single parameter;
- (d) measurement input means and metric equivalent determining means comprising a web having a plurality of rows of printed numbers, each said number being the numerical metric equivalent, of each of the other numbers as expressed respectively in each of the remaining printed metric unit designations, the rows and the numbers in the rows being arranged so that the numbers in a given row will be aligned with the windows in said second set of display means when said row is moved in place behind the windows, and means for moving the web in place behind said windows for viewing therethrough, each of said numbers being further arranged so that each said number is displayed in the window which visually corresponds to an appropriate metric unit designation displayed in the first set of display means such that all of the numbers in a given row as expressed in the visually corresponding metric units are metric equivalents.
3 more elements
Dependencies are inferred from the claim text.