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US 2026/0044175 A1Published application
Abacus
OwnerUy Nguinventor
Life of this patent
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Abstract
An abacus comprising a base, a first post and a second post mounted vertically on the base, and a plurality of rails coupled between the first post and the second post. Each of the plurality of rails is configured to receive a removable token that is slidably mounted on each rail. Each rail has a substantially flat cross-section. The cross-section of the rail is tilted at an angle between a vertical position and a horizontal position to enable gravity to keep a removable token mounted on the rail.
Claims9
An abacus comprising:
- a base;
- a first post and a second post mounted vertically on the base;
- a plurality of rails coupled between the first post and the second post, wherein each of the plurality of rails is configured to receive a removable token that is slidably mounted on the each rail.
Dependencies are inferred from the claim text.