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 (80) inside a first conduit (82) 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  ?

• B29C 65/00 - Joining of preformed partsApparatus therefor
• 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
• B23P 17/00 - Metal-working operations, not covered by a single other subclass or another group in this subclass
• B21D 15/02 - Corrugating tubes longitudinally
• F16L 9/06 - Corrugated pipes

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

Abstract

A conduit modifier (54) may be used to corrugate at least a portion of a conduit (34). The conduit modifier may include at least a first plurality of rollers (58) arranged in a first pattern around a passageway. The first plurality of rollers may form ridges (36) and grooves (38) lengthwise along a conduit passing through the passageway. A second plurality of rollers (58') arranged in a second pattern around the passageway may compress ridges formed by the first set of rollers. The ridges may be formed such that a distance from a central axis of the conduit to a highest portion of an outer surface of a ridge is substantially equal to a distance from the central axis of the conduit to an outer surface of the un-corrugated portion (32) of the conduit. The corrugated portion of the modified conduit may be expandable.

IPC Classes  ?

• B21D 15/02 - Corrugating tubes longitudinally