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US 6,330,970 B1Granted
Global time calculator
OwnerEdward E. Whaleninventor
Life of this patent
Estimating the term…
Abstract
A global time calculator includes an insert and a sleeve. The insert is marked on both its sides (or on a single page slide insert on one side) with vertical columns of incremental time designations, and may or may not contain a stop mechanism. The insert is slidable and connected with the sleeve so as to be shiftable in a vertical direction. Both sides of the sleeve (or in some embodiments a single side of the sleeve) have areas for obscuring vertically aligned time designations that are in excess of unobscured time designations.
Claims8
A global time calculator, comprising:
- an insert including a first side, a second side, and an aperture, said first side and second side having a plurality of longitudinally disposed rows of incremental time designations displayed thereon, said rows defining a plurality of transversely disposed sets of predetermined time designations;
- and
- a sleeve, wherein said insert is slidably connected with said sleeve so as to be shiftable in a vertical direction, said sleeve comprising a first side, a second side, said first side having an extension insertable into said aperture and operative to limit movement of said insert within boundaries set by said aperture.
Dependencies are inferred from the claim text.