Goods & Services

Anode gauges, namely, gauge assemblies for monitoring, controlling and minimizing electrolytic corrosion; galvanic anode gauges, namely, gauge assemblies with visual indicators for monitoring, controlling, visualizing, and minimizing electrolytic corrosion

Abstract

A lined conduit formed by decorrugating a corrugated liner conduit inside a first conduit is described. A method and apparatus for forming the lined conduit are also described. The corrugated liner conduit may be positioned inside the first conduit. Each end portion of the corrugated liner conduit may be coupled to a hydraulic expander. Each hydraulic expander may include a hydraulic cylinder. Each hydraulic cylinder may include a piston rod with an opening along the length of the piston rod. The corrugated liner conduit may be evacuated through a valve assembly coupled to the passageway in one of the piston rods. The evacuated corrugated liner conduit may be pressurized with fluid from a fluid source coupled to the valve assembly. Pressurizing the corrugated liner conduit may expand corrugations in the corrugated liner conduit to form a decorrugated liner in the first conduit.

IPC Classes  ?

• B23P 11/00 - Connecting or disconnecting metal parts or objects by metal-working techniques, not otherwise provided for
• B23P 11/02 - Connecting or disconnecting metal parts or objects by metal-working techniques, not otherwise provided for by first expanding and then shrinking or vice versa, e.g. by using pressure fluidsConnecting or disconnecting metal parts or objects by metal-working techniques, not otherwise provided for by making force fits
• B21D 26/02 - Shaping without cutting otherwise than by using rigid devices or tools or yieldable or resilient pads, e.g. shaping by applying fluid pressure or magnetic forces by applying fluid pressure
• B21D 15/03 - Corrugating tubes longitudinally by applying fluid pressure