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:
Dec. 15, 2009
Filed:
Nov. 29, 2005
Daniel J. Swistak, Newmarket, NH (US);
James J. Burnes, Deep River, CT (US);
Todd E. Phillips, Mulliken, MI (US);
David J. Churchill, Grand Ledge, MI (US);
Daniel J. Swistak, Newmarket, NH (US);
James J. Burnes, Deep River, CT (US);
Todd E. Phillips, Mulliken, MI (US);
David J. Churchill, Grand Ledge, MI (US);
Infiltrator Systems, Inc., Old Saybrook, CT (US);
Abstract
An arch shape cross section thermoplastic leaching chamber, having sidewall slot perforations which flare inwardly, is made using a mold comprised of a mold cavity part and an inwardly retractable mold core part. The core part has opposing side slides with projections that define the perforations; they are separated by a center block. The center block moves downwardly and the slides move inwardly, under action of slide rods built into the mold core, to enable a molded chamber to be removed from the mold.