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US 8,984,698 B1Granted
Light weight sewer cable
AssigneeSeescan, Inc.
InventorMark S. Olsson
Life of this patent
Estimating the term…
Abstract
Lightweight sewer cable that may include an elongate central resilient non-metallic core member, an elongate metallic helical coil spring surrounding the core member, and an elongate non-metallic spacer between the core member and the coil spring are disclosed.
Claims17
A device for clearing pipe obstructions, comprising:
- a push-cable structure disposed for insertion into a pipe for clearing obstructions that includes;
- an elongate central resilient non-metallic core member made of a composite material including fibers held together with a binder;
- an elongate jacket surrounding the core member;
- an elongate helical flat metal wire surrounding the jacket;
- and
- an elongate helical metal coil spring surrounding the helical flat metal wire.
3 more elements
A push cable, comprising:
- an elongate central resilient core member made of a composite material including fibers held together with a binder;
- an elongate jacket surrounding the core member;
- an elongate helical flat metal wire surrounding the jacket;
- an elongate helical metal coil spring surrounding the helical flat metal wire;
- an elongate non-metallic spacer between the helical flat metal wire and the helical metal coil spring;
- and
- at least one high pressure fluid cavity extending longitudinally in the spacer;
- wherein the spacer includes a helical groove configured to receive the coil spring and maintain the spring in a predetermined pitch so as to maintain a predetermined spacing between adjacent coils of the coil spring.
5 more elements
A cable for clearing obstructions in a pipe, comprising:
- an elongate central core comprising fibers held together with a binder;
- an elongate jacket surrounding the central core;
- an elongate helical flat wire surrounding the jacket;
- wherein the flat wire tightens against the jacket to limit the amount of torque transferred to the central core member during rotation of the cable while moving the central core in tandem with the jacket and helical flat wire into or out of the pipe.
1 more element
Dependencies are inferred from the claim text.