Device for calculating no decompression dive times
OwnerThomas J. Buergerinventor
Life of this patent
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Abstract
A new device including a new arrangement of dive tables is disclosed for planning non-decompression dives. The invention utilizes two separate scales, movable relative to one another. The first scale shows the pressure group scale, the bottom time or residual nitrogen scale and surface intervals aligned by relationship to pressure group. The second scale shows depth scales, repetitive dive group, pressure group, and no decompression time limits scale. Windows in the second scale allow the observation of pressure group scales and corresponding bottom time on alignment of bottom time from scale one with depth from the second scale.
Claims10
A device for calculating repetitive dive times for non-decompression dives, comprising:
- a. a means for alignment for aligning charts, the charts including a pressure group chart including pressure groups, a residual nitrogen chart including integrated bottom times, and a surface interval chart including surface intervals, the residual nitrogen chart, the pressure group chart, and the surface interval chart in essentially parallel alignment;
- b. a window means, slidably connected to the means for alignment, the window means including a maximum decompression time limit scale, a depth scale and a new pressure group scale including new pressure groups in essentially parallel alignment with each other and in essentially perpendicular alignment with the pressure group chart positioned on said means for alignment the window means for determining and displaying one of the pressure groups corresponding to a diving depth and corresponding to one of the integrated bottom times aligned by the means for alignment, and the window means for determining and displaying a set of the surface intervals corresponding to the one of the integrated bottom times, and for determining and displaying one of the new pressure groups corresponding to a selected surface interval of the set of surface intervals for a subsequent dive.
Dependencies are inferred from the claim text.