Submersible tablet for underwater or extreme environment
OwnerMark L. Haganinventor
Life of this patent
Estimating the term…
Abstract
A tablet that is suitable for use underwater or in any extreme environment is provided. The tablet is designed, through the use of buoyant materials such as polystyrene, to have a slightly negative buoyancy at a depth of about fifty feet so that it can be very easy to manipulate underwater and will not sink or ascend rapidly if let go. A length of waterproof (plastic) vellum is stretched between two rollers to form a drawing or writing surface thereby enabling the user to easily record information on the vellum.
Claims13
A submersible tablet configured for recording information on a drawing medium underwater or in an extreme environment, comprising:
- a frame;
- two roller members including respective two vellum rollers, the roller members being coupled to the frame;
- a plastic vellum sheet rolled around each of the two vellum rollers;
- a tension adjustment mechanism configured to maintain a consistent tension in the vellum sheet when the vellum sheet is wound around the vellum rollers, a portion of the vellum sheet that is between the two vellum rollers providing a drawing surface;
- and
- a storage member disposed below the drawing surface and configured to hold a writing implement,
- wherein the frame and the two vellum rollers are made of negative buoyant materials and the tablet has a slightly negative buoyancy at a depth of fifty feet so that the tablet does not sink or ascend rapidly underwater.
A submersible tablet configured for recording information on a drawing medium underwater or in an extreme environment, comprising:
- a frame;
- two roller members including respective two vellum rollers, the roller members being coupled to the frame;
- a plastic vellum sheet rolled around each of the two vellum rollers, the vellum sheet including a first portion bearing dive information and a second portion provided for adding additional information by drawing or writing with a writing implement;
- and
- a tension adjustment mechanism configured to maintain a consistent tension in the vellum sheet when the vellum sheet is wound around the vellum rollers, a portion of the vellum sheet that is between the two vellum rollers providing a drawing surface,
- wherein the frame and the two vellum rollers are made of negative buoyant materials and the tablet has a slightly negative buoyancy at a depth of fifty feet so that the tablet does not sink or ascend rapidly underwater.
Dependencies are inferred from the claim text.