Liquid purification or separation – Structural installation – Flume stream type
Reexamination Certificate
2004-09-03
2009-02-24
Upton, Christopher (Department: 1797)
Liquid purification or separation
Structural installation
Flume stream type
C210S162000, C210S163000, C210S170030, C404S004000
Reexamination Certificate
active
07494585
ABSTRACT:
The present invention relates to an apparatus for maximizing the blockage of fluid borne solid materials from passage through a catch basin into the downstream parts of a fluid flow channel, with minimum impact on the volume and rate of fluid passing through the channel. The apparatus comprises at least one filter sheet secured within the catch basin at a location above and covering a large proportion of the floor of the catch basin, an overflow wall separating the filter area from an unfiltered overflow area, and a diverter for directing incoming trash away from the overflow area and to the filter side of the overflow wall. Although the apparatus covers a large area within the catch basin, the overflow wall, overflow area, and clearance between the filter sheet(s) and the floor provide sufficient space for fluid and excess trash to pass in the event the capacity of the apparatus for holding them is exceeded. Preferably, the apparatus also has a drain-access hole through the filter sheet(s) and a movable hole cover located appropriately to facilitate access to the catch basin drain.
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Khalil Nino (applicant herein); no title; 1 page with 2 photos showing hanging flexible mesh basket type inserts located inside a catch basin; presently uncertain of exact date, but believed taken in or about Jul. of 2003 of devices that had been installed prior to that date in Los Angeles county. (See, e.g., U.S. Pat. #6106707, previously cited herein, for a hanging basket type insert that appears similar in many respects but has a hard hopper shell that contains absorbent materials).
Aaron L. Patton (attorney herein); 2 letters (cover letter correcting address and enclosing the principal letter) to City of Los Angeles attention Juan A. Benitez; subject: Request for Quotation (RFQ) No. 1519 “Catch Basin Inserts & Installation,” etc.; cover letter dated Jan. 20, 2005, principal letter dated Jan. 19, 2005; 2 pages, 1 for each letter since the principal letter's enclosures--copy of Filing Receipt and U.S. Appl. No. 10/934,854 (informally referred to as “[a] copy of the subject invention”)-are believed to be already on file herein.
Philip H. Lam (Intellectual Property Attorney, Office of The City Attorney, City of Los Angeles); letter dated Feb. 8, 2005, titled Co-Inventorship Issues, etc., with an enclosure identified as a copy of Response by Practical Technology to RFQ #869 (see RFQ #689 below); letter being 2 pages (see below re pages for the RFQ #869 enclosure).
City of Los Angeles; Request for Quotation (RFQ) #869 for Annual Requirements: Catch Basin Filter Insert & Trash Monitorings; dated Nov. 13, 2002; 38 pages (although, the number of pages provided here is reduced to 13 in an effort to minimize unnecessary volume and focus on the pages most relevant to the proposed work. Prices were redacted for privacy.).
City of Los Angeles; Request for Quotation (RFQ) #1519 for Catch Basin Inserts & Installation, dated Nov. 30, 2004, 139 pages (although, the number of pages provided here is reduced to 45 in an effort ro minimize unnecessary volume and focus on the pages most relevant to the proposed work. Prices were redacted for privacy, as were phone/fax/email information of meeting attendees.).
Aaron L. Patton; 2-page letter to Philip H. Lam re Request for Quotation (RFQ) No. 1519 “Catch Basin Inserts & Installation,” etc., dated Feb. 17, 2005. (The specification referred to was a standard pre-printed form, see below, believed intended for use in all LA City catch basin filter insert contracts, although it may have simply not been included in RFQ #869.).
City of Los Angeles; Specifications For Catch Basin Filter Inserts and Trash Monitoring Services; 3
Patton Aaron L.
Upton Christopher
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