Static structures (e.g. – buildings) – Flue connection to building structure
Patent
1997-02-21
1998-06-23
Canfield, Robert
Static structures (e.g., buildings)
Flue connection to building structure
52 60, 527414, 5274213, E04D 1314
Patent
active
057688389
ABSTRACT:
A pitch pocket includes a multi-piece curb that has at least four quarter-circular corner elements, and at least four intermediate elements. Each of the curb elements has a base surface and similarly shaped lateral cross-sectional configuration with diagonal cut free ends. When the diagonal cut free ends are arranged abuttingly end-to-end, the elements define a continuous pocket with a generally quadrilateral plan shape. An adhesive is applied to the base surface and the free ends of each of the curb elements to secure the curb elements to each other and to the roof. A pourable sealant is cast within the pocket and forms a solid seal about the penetration in the roof. The curb elements are preferably made from a thermosetting polyurethane material.
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patent: 1494234 (1924-05-01), Gossett
patent: 3708185 (1973-01-01), Bilicki et al.
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patent: 4031676 (1977-06-01), Dally
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Exhibit C is a portion of the National Roofing Contractors Association (NRCA) Roofing and Waterproofing Manual--Fourth Edition (publication date unknown) showing prior flashing and penetration pockets.
Exhibit D is an article from the Roofer Magazine/Jul. '97 showing use of a pitch pocket with a cementatious curb to solve a long-felt need for a product to seal penetrations in built-up asphalt roofing.
Exhibit E is Hawley's Condensed Chemical Dictionary/Eleventh Edition.
Exhibit F is the Guide for the Preparation of Patent Drawings, Oct., 1993.
Exhibit A is a prior art pitch pocket having a cementatious curb for use with built-up asphalt roofing systems.
Exhibit B is a portion of the 1997 Modern Plastics Encyclopedia.
Canfield Robert
Consul Tech, Inc.
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