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Class Information
Number: 405/134
Name: Hydraulic and earth engineering > Underground passageway, e.g., tunnel > Sectional
Description: Method or apparatus wherein the tunnel is formed of performed segments each of which is a circumferentially complete portion of the tunnel.










Sub-classes under this class:

Class Number Class Name Patents
405/135 Seal or joint 51


Patents under this class:

Patent Number Title Of Patent Date Issued
8425152 Arched culvert and method of manufacture Apr. 23, 2013
8425153 Arched culvert and method of manufacture Apr. 23, 2013
8322949 System for creating underground structures Dec. 4, 2012
8245452 Molded sectioned riser and locking cover Aug. 21, 2012
8122680 Concrete conduit members Feb. 28, 2012
7926510 Risers for use with access openings in wastewater treatment tanks Apr. 19, 2011
7722293 Methods for constructing underground structures May. 25, 2010
7568860 System for articulably bearing a prefabricated structural member on a foundation Aug. 4, 2009
7441990 Process for the construction of a segment of an open-air work by prefabricated structural members, and prefabricated structural member related thereto Oct. 28, 2008
6988337 Means and method for constructing a fully precast top arch overfilled system Jan. 24, 2006
6719492 Top arch overfilled system Apr. 13, 2004
6554536 Linings for sewers Apr. 29, 2003
6450734 Transportation underwater tunnel system Sep. 17, 2002
6406220 Arched support structure Jun. 18, 2002
6375390 Method for widening road, superhighway or railway tunnels, without interrupting the traffic Apr. 23, 2002
6328501 Method of manufacturing a tunnel or shaft lining or pipeline Dec. 11, 2001
6129484 Prefabricated structure for the construction of overhead or underground works Oct. 10, 2000
5899635 Transportation underwater tunnel system May. 4, 1999
5749399 End sections of connections for mineral wool conduits of the "Climaver Plus" type May. 12, 1998
5551798 Culvert end wall retainer system Sep. 3, 1996
5522676 Undercut excavation method Jun. 4, 1996
5322390 Underwater tunnel and an underwater mooring apparatus to moor the underwater tunnel Jun. 21, 1994
5281053 Underground tubular structural system and process for producing it Jan. 25, 1994
5129761 Pipe placement method and apparatus Jul. 14, 1992
4854775 Precast concrete culvert system Aug. 8, 1989
4836714 Enclosed structures of very large cross-section, such as conduits, silos or shelters Jun. 6, 1989
4815895 Construction of tunnels or pipes for use in civil engineering works Mar. 28, 1989
4673312 Method and apparatus for the underground installation of pipelines Jun. 16, 1987
4147449 Protection conduit line for laying underground cables Apr. 3, 1979
4147452 Method for constructing a rectangularly shaped tunnel Apr. 3, 1979
4116011 Method of excavating tunnels Sep. 26, 1978
4106297 Method of and an arrangement for establishing an underground passage Aug. 15, 1978











 
 
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