The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 1979
Filed:
Apr. 14, 1978
Ray B Duggins, Chadds Ford, PA (US);
Peter G Mackauf, San Diego, CA (US);
Charles J McLaughlin, III, Wilmington, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
This invention provides apparatus and a method for laying flexible irrigation tubing underground, the apparatus comprising a plow attached to a frame, means located on the frame to support and unreel a spool of flexible tubing, a rigid tube affixed to the frame adapted to accept the flexible tubing at its upper end and bent so that its lower portion extends rearward of the plow generally parallel to the ground and in the trench dug by the plow, hillers affixed to the frame adapted to force the dirt plowed by the plow back into the formed trench immediately behind the rigid tube, and a compacting means attached to and trailing the hillers to compact the dirt into the trench, provided that the trailing end of the rigid tube extends rearward to a point behind the point of compaction of the compacting means such that, in operation, as the apparatus is pulled across the ground and the flexible tubing is drawn into the rigid tube, the flexible tubing exits the trailing end of the rigid tube and is laid into the underground tunnel which is formed by operation of the component parts of the apparatus.