UNDERGROUND PIPE WRAPPERS IN

Brand	Owner	Address	Description
TRENTON	TRENTON CORPORATION, THE	7700 Jackson Road Ann Arbor MI 48103	UNDERGROUND PIPE WRAPPERS IN THE FORM OF PLASTIC-BASED WRAPPING TAPES, PETROLEUM WAX PIPE FILLERS, UNDERGROUND PIPE END SEALS IN THE FORM OF WOVEN GLASS WRAPPING TAPE AND UNDERGROUND PIPE INSULATORS, IN THE FORM OF NEOPRENE RUBBER SOLD IN STRIP FORM;PETROLEUM WAX BASED UNDERGROUND PIPE PRIMERS, AND PRESERVATIVES FOR PROTECTING UNDERGROUND PIPES AGAINST RUST AND CORROSION IN THE NATURE OF HOT AND COLD APPLIED PETROLEUM WAX COATINGS;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A laying method for laying communication cables (16) is provided which allows to lay optical fiber cables (20) in an underground pipeline such as a sewage pipe neither placing direct tension nor allowing slack on them, and for a main pipe in which a plurality of optical fiber cables (20) are to be laid, the method also allows to lay optical fiber cables (20) in the upper space of inside the pipeline and to obviate the need of an expensive robot for the laying operation. In the proposed laying method, a high-strength low-elongation tension member is disposed to be slidable in the lengthwise direction along each optical fiber cable (20, 21, 22), and the tension members (25, 26, 27) are drawn into the underground pipeline (1) to tension the trunk tension member (25) thereby stretching the trunk tension member (25) substantially straight in the underground pipeline (1), and thus the optical fiber cables (20, 21, 22) are laid in the upper space of inside the underground pipeline (1). Also the branch tension member (26, 27) is tensioned in the branch pipe (4, 5) to lay the optical fiber cables (21, 22) in the branch pipe without allowing slack.