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:
Oct. 20, 1992
Filed:
May. 02, 1991
Applicant:
Inventor:
James M Nichols, Old Saybrook, CT (US);
Assignee:
Infiltrator Systems, Inc., Old Saybrook, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02B / ;
U.S. Cl.
CPC ...
405 48 ; 405 43 ; 405 46 ; 405 49 ; 403345 ; 285330 ;
Abstract
A conduit for dispersing or gathering liquids in the earth has an arch shape cross section and alternating peak and valley corrugations along its length. At one end of the conduit is a sub-arch for receiving a pipe. In one embodiment there is a discontinuous valley by the sub-arch and a continuous web on the peak corrugation near the sub-arch in combination with cantilevered legs. In another embodiment the web is discontinuous while the valley is continuous in the region of the sub-arch. Both essential constructions provide a strong joint when conduits are mated to each other and are buried in the earth and subjected to a load.