Patent · US Expired

Concrete form with integral drain

US5586416A · kind A · utility

20Cited by
27References
25Claims
0Family size

Inventors

Key dates

Filing dateMar 22, 1995
Grant dateDec 24, 1996
Priority date
Expiry dateMar 22, 2015

Classification

  • Technology area (CPC E)Fixed Constructions
  • CPC primaryE02D27/016
  • WIPO fieldCivil engineering
  • WIPO sectorOther fields

Abstract

A footing/foundation form with an integral drain having two substantially parallel spaced apart, serpentuitous walls. Each wall includes a plurality of hollow tubes elevated "to grade" above an excavation bottom by a stake and clip mechanism with gravel filled between the elevated tubes and the excavation bottom such that the elevated tube and gravel both engage concrete poured between the walls. The tubes are common 10-foot PVC tubes with a plurality of holes positioned away from the footing/foundation thereby providing the form with an integral drain. The stakes are preferably pieces of reinforcing bar and the clips, while quite effective, are also inexpensively manufactured.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.