Diving equipment powered by a diver's exertion

  • US 5,092,327 A
  • Filed: 12/14/1990
  • Issued: 03/03/1992
  • Est. Priority Date: 06/29/1987
  • Status: Expired due to Fees
First Claim
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1. Diving Equipment comprising an air supply line having upper and lower ends, said upper end leading to the atmosphere above the water surface, a diver activated air pump connected to the lower end of said air supply line via a first non-return valve permitting air flow from the air supply line to the air pump, a mouthpiece connected to an air hose, said air hose connected to said air pump via a second non-return valve permitting air flow from the air pump to the mouth piece, an air outlet for exhaled air located on said air hose between said mouthpiece and said second valve, wherein the air pump comprises a rigid housing with one open side, said housing having an interior defining a pump volume, said open side being sealed by means of a flexible bellows, the flexability of said bellows permitting said bellows to be pressed into said housing or withdrawn from said housing, the interior of said housing being at all times entirely free of any structure used to compress the air in said pump other than said bellows said bellows being exposed to the air in said pump and when pressed into the interior of the rigid housing by external overpressure reduces the pump volume and compresses the air in said pump, said bellows dimensioned in such a way that it can almost completely fill the interior of the housing, an activating device connected to said bellows, for increasing the pump volume by withdrawing the bellows from the interior of said housing and wherein in use the air pump is fastened to a part of the diver'"'"'s body lower than the lungs.

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