Waterstop for concrete form separator
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United States of America Patent
Stats
-
Dec 26, 1989
Grant Date -
N/A
app pub date -
Jul 5, 1988
filing date -
Nov 11, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a device for prevention of rainwater or like from penetrating into a concrete structure around each separator left embedded therein, the device comprising a hollow cylinder of synthetic resin, the latter including a female threaded cylinder made of metal or other material embedded in the interior at one end thereof and water-swollen damming-up outer rings fixed on the outer periphery so as to serve together as terminals, a threaded cylindrical portion formed at one end of each of the terminals being engaged with a male threaded portion formed around the corresponding end of the separator, and the cylinder of synthetic resin further including a plug provided with a water-swollen damming-up inner ring fixed into the interior at the other end thereof.
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