Registers – Calculators – Bar
Patent
1986-08-19
1989-01-17
Fuller, Benjamin R.
Registers
Calculators
Bar
235 70A, G06G 102
Patent
active
047989408
ABSTRACT:
A manual calculator useful in registering and converting whole and fractional numbers from one numbering system to another numbering system in which a plurality of slide members are arranged in an array within a cover, with each said slide member being movable relative to the cover between first and second positions. The slide members each bear indicia indicative of the selected ones of two states, and the cover defines an elongate window in which the indicia borne by the slide members are visible in an array indicative of a selected number series in a first numbering system. The cover also bears a plurality of sets of indicia with each set having a predetermined correlation to number series expressed in a differing preselected numbering system, with the sets of indicia being arranged relative to the window and slide members so as to be perpendicular to the direction of movement of the slide members and with numerical values in each system aligned with a corresponding one of the slide members whereby the positions of said slide members may be manipulated to indicate a number series in a first numbering system and corresponding number series in different numbering systems.
REFERENCES:
patent: 1892634 (1932-12-01), Rubinsky
patent: 3712974 (1973-01-01), Martin
patent: 3837569 (1974-09-01), Bradbury et al.
patent: 3843048 (1974-10-01), Haase
patent: 3916161 (1975-10-01), Hancock
patent: 4323609 (1982-04-01), Bromberg
patent: 4633070 (1986-12-01), Merkl
Fuller Benjamin R.
McConnell Daniel E.
LandOfFree
Manual calculator for analog and digital numbers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Manual calculator for analog and digital numbers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manual calculator for analog and digital numbers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2414233