Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 405/192
Name: Hydraulic and earth engineering > Diving > With air lock
Description: Method or apparatus wherein the means with which personnel may carry on the underwater operation comprises an underwater enclosure having a gaseous environment in which a specific pressure condition is maintained, and wherein a chamber means is provided having a first sealable opening communicating with said enclosure, and a second sealable opening communicating with the underwater environment, whereby passage of material or personnel into or out of the enclosure can be accomplished while maintaining the pressure condition within the enclosure.










Patents under this class:

Patent Number Title Of Patent Date Issued
8152413 Method of and apparatus for bouyancy compensation for divers Apr. 10, 2012
6622793 Method for carrying out operations on petroleum and gas fields and deep-sea platform for realizing the same Sep. 23, 2003
6612251 Mobile undersea habitat Sep. 2, 2003
6457907 Method and device for carrying out work on an object which is present under water Oct. 1, 2002
6220787 Ship type floating oil production system Apr. 24, 2001
5869756 Moored water profiling apparatus Feb. 9, 1999
5795103 Oil tanker and method for recovering oil from submerged oil tanker Aug. 18, 1998
5775844 Pipeline repair habitat Jul. 7, 1998
5749679 Method and device for letting out gas from life jackets of divers May. 12, 1998
4913590 Mono-atmospheric chamber Apr. 3, 1990
4904117 Access apparatus connecting a first and second chamber at great water depths Feb. 27, 1990
4828207 Fluid lock May. 9, 1989
4724790 Submersible bell Feb. 16, 1988
4669413 Transfer chamber and method of operating same Jun. 2, 1987
4626128 Underwater gas pocket work unit and removal of dangerous fumes and gases therefrom Dec. 2, 1986
4345854 Apparatus for laying underwater pipelines Aug. 24, 1982
4333414 Submersible twin-hull watercraft Jun. 8, 1982
4324510 Apparatus for supporting a mine roof support assembly Apr. 13, 1982
4274405 Method for varying the ambient pressure in a vessel Jun. 23, 1981
4196656 Method and apparatus for transporting and housing tunnel workers active in high pressure environments Apr. 8, 1980
4144801 Method and apparatus for transporting and housing tunnel workers active in high pressure environments Mar. 20, 1979
4011867 Diver's pressure chamber system Mar. 15, 1977
3987742 Swivel air lock for airtight connection between submergibles Oct. 26, 1976











 
 
  Recently Added Patents
Wind driven generator for vehicles
Photographic printing paper and method of making same
Process of preparing functionalized polymers via enzymatic catalysis
Pharmaceutical compositions of entacapone, levodopa and carbidopa with improved bioavailability
Mask blank, transfer mask, and film denseness evaluation method
Energy drink package
Electronic devices with voice command and contextual data processing capabilities
  Randomly Featured Patents
Automatic controls of water-oil separating system for use with centrifugal type separator
Ground rod driver
Multi-state EEPROM having write-verify control circuit
Transmitting high rate data within a MIMO WLAN
Ferroelectric capacitor with electrode formed in separate oxidizing conditions
Indirect extrusion process and machinery therefor
Method for labelling polygons
Reduced size implantable pump
Toner feeder, toner, and electrophotographic image forming apparatus using the toner feeder and toner
Omega type zeolite having high thermal stability, its process of preparation and its utilization