LandOfFree - US Patents - Listing for Hydraulic and earth engineering,Underground passageway, e.g., tunnel

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Process for the protection of galleries

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Process for waterproofing surfaces

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Process of providing an elongate underground cavity

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Profiled seal for tunnel segments

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel

Pumpable mine seal

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Recoverable tunnelling machine

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Rectangular shield excavating machine

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel

Reinforcement of arch type structure with beveled/skewed ends

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Relating to seals

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Rock drilling rig

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel

Roof structure for tunnel

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Sardine-bone construction method for large-section tunnel

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Seal and process for producing such seal

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Seal arrangement for tubular tunnel segments

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Sealing arrangement

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Sectional

Sealing arrangement

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Sealing arrangement for tunnel segments

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining

Sealing assembly for tunnel construction sections

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring

Sealing means for the drive members of drive shields