Patent · US Expired

Variable buoyancy device

US3952349A · kind A · utility

24Cited by

6References

23Claims

0Family size

Assignee

Grumman Aerospace Corporation · US

Inventors

Robert Erath · Friedrichshafen, DE
Mathias A. Speidel · Smithtown, US
Edward J. Kennelly · Bayport, US

Key dates

Filing date	Nov 18, 1974
Grant date	Apr 27, 1976
Priority date	—
Expiry date	Nov 18, 1994

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB63B2207/02
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A variable buoyancy device for automatically cycling an object between upward and downward limits including a regulator valve, inflatable device, deep dive control system, shallow dive control system, differential pressure valve, and weight compensating mechanism, as desired, all coacting to automatically cycle the variable buoyancy device between upper and lower depth limits corresponding to predetermined sea water pressures.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.