Combination void drain vent chain

Details Combination void drain vent chain Combination void drain vent chain

1988-09-19

1989-08-01

Scherbel, David A.

Static structures (e.g., buildings)

Wall, ceiling, floor, or roof designed for ventilation or...

52303, 52310, 52380, E04B 170

Patent

active

048523194

ABSTRACT:
A combination void drain vent chair for use in the construction of voided concrete shapes, including an elongated tube connecting the interior of the void form to the exterior of the concrete shape, and including a flat flexible member surrounding the upper end of the tube which may be attached to the under surface of the void form so that the void drain vent chair may be conveniently used with void forms that are circular in cross section, as well as those that are rectangular in cross section.

REFERENCES:
patent: 2565937 (1951-08-01), Verhagen
patent: 3344567 (1967-10-01), Cowan et al.
patent: 4706418 (1987-11-01), Stewart

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