Pitch box

Static structures (e.g. – buildings) – Exterior-type flashing

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Details

52219, 285 42, 98 82, E04D 136

Patent

active

047304219

ABSTRACT:
A pitch box for sealing the junction between an upright elongated projection and the opening where it penetrates into the surface of a roof. The pitch box has a central tubular part which has a base adapted to be mounted against the roof surface surrounding the projection and adapted to extend upwardly generally coaxial with the longitudinal axis of the projection to provide a space surrounding the extension for receiving anchoring material. A collar surrounds the upper end of the tubular part and a bottom wall is provided between the bottom of the collar and a median point on the tubular part so that a trough is formed surrounding the upper end of the tubular part. The bottom of the trough has weep holes in it for discharging moisture. The top of the collar extends above the top of the tubular part. A porous material may be used to fill the bottom of the trough and the top of the collar is filled with tar or other sealant material which can be mounded up around the projection which extends upwardly through the pitch box.

REFERENCES:
patent: 183300 (1876-10-01), Harmon
patent: 288535 (1883-11-01), Williams
patent: 1263789 (1918-04-01), Morrison
patent: 1278120 (1918-09-01), Donnelly
patent: 1442172 (1923-01-01), Nelson
patent: 3461625 (1969-08-01), Sandow
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patent: 4010578 (1977-03-01), Logsdon
patent: 4211423 (1980-07-01), Resech
patent: 4265058 (1981-05-01), Logsdon
patent: 4333660 (1982-06-01), Cupit
patent: 4386488 (1983-06-01), Gibbs

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Profile ID: LFUS-PAI-O-1919776

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