Back to results
US 2017/0102729 A1Published application
Manual calculating device
OwnerDale Ylitaloinventor
Life of this patent
Estimating the term…
Abstract
A manually operable calculating device is provided. The device includes a plurality of rods vertically disposed relative to one another. At least ten rings are slidably disposed on each of the plurality of rods. The at least ten rings include a first set of five rings including a first color and a second set of five rings including a second color. The plurality of rods each include a front surface opposite a rear surface. A plurality of numerals are disposed on the front surface and correspond to the number of rings. The rear surface is unnumbered.
Claims10
A manually operable calculating device comprising:
- a plurality of rods vertically disposed relative to one another;
- a first stop member and a second stop member affixed to opposing ends of the plurality of rods;
- and
- at least ten rings slidably disposed on each of the plurality of rods and comprising a first set of five rings comprising a first color and a second set of five rings comprising a second color;
- wherein
- the plurality of rods each comprise:
- a front surface opposite a rear surface;
- a plurality of numerals on the front surface corresponding to the number of rings;
- an unnumbered length on the front surface extending from a last numeral thereon to provide a space for unused rings;
- and
- an unnumbered rear surface.
8 more elements
Dependencies are inferred from the claim text.