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US 4,051,846 AGranted
Life support system for divers
OwnerClifton M. McClure, IIIinventor
Life of this patent
Estimating the term…
Abstract
An emergency ascent system to be used by a diver in conjunction with a pressurized breathing system. Responsive to a valve operated by the diver, air pressure is applied to a first end of a cylinder, and a piston therein is moved from the first end to a second end, ejecting a counter buoyancy weight, and causing the applied air pressure to be valved to an air bag, which is inflated thereby to effect the ascent of the diver.
Claims7
Diving apparatus comprising:
- a source of gas pressure;
- a cylinder having an intermediate region between its ends for slidably holding weight means for effecting negative buoyancy comprising at least one weight member;
- a piston normally positioned in one end of said cylinder;
- a cap normally positioned in the opposite end of said cylinder and including releasing means responsive to a selected force applied by said piston through said weights for releasing said cap from the end of said cylinder;
- and
- normally closed valve means connecting said source of gas pressure and said one end of said cylinder;
- whereby upon the operation of said valve means, pressure is applied to said one end of said cylinder, forcing said piston and weight member in said cylinder toward said opposite end of said cylinder and applying a pressure on said releasing means, whereby said cap and weight are ejected from said cylinder.
4 more elements
Dependencies are inferred from the claim text.