Underwater recovery apparatus
OwnerFrank P. Sperandeo, IIIinventor
Life of this patent
Estimating the term…
Abstract
A system for recovery of relatively small items such as treasure located on and beneath the bottom of the sea or other body of water in the form of a head having a shaft with attachment at the upper end for suspension from a ship or the like, compressed-air and oscillatory means for driving the shaft into the sea-bottom and a circular net supported by chains and by ribs radiating from pivots at the lower end and deployed outwardly by upward movement through the bottom material when the shaft is drawn upward on retrieval of the head.
Claims8
In a device for submersion in a sea bottom or the like and retrieval therefrom to secure items from the sea bottom, including:
- an elongate shank having an upper and a lower end, means for attachment proximate the upper end, a plurality of arms in radial array about the shank, each arm having a first end and a second end, means pivoting the first end of each arm proximate the lower end of the shank, whereby the arms can pivot from radial position to position folded along the shaft;
- means flexibly connecting the second end of each arm to the shank, a net supported by the arms, means for forcing the device into the sea bottom and means for spreading all said arms and net and screening material from the sea bottom on said retrieval, the improvement comprising:
- the means for forcing including means for vibrating said device the lower end of the shank having a conical header pointing downwardly, and means around the conical header for ejecting compressed gas downwardly for coacting with the conical header in penetrating the sea bottom.
Dependencies are inferred from the claim text.