Pipes and tubular conduits – End protectors – Threaded
Reexamination Certificate
2006-10-24
2009-02-10
Hook, James F (Department: 3754)
Pipes and tubular conduits
End protectors
Threaded
C138S089000, C220S785000, C220S797000, C220S802000, C220S366100
Reexamination Certificate
active
07487801
ABSTRACT:
A cap and plug for use in sealing the end of a pipe or tube is provided which comprises a tubular member comprised of a resilient material having an open end and a closed end, and having a sidewall extending therebetween, the sidewall having an interior surface having an inwardly-directed ridge extending circumferentially along a centrally-disposed portion of said interior surface of said sidewall, the closed end comprising a centrally-positioned hollow dome portion defined by an inwardly-extending open-ended annular recess, said annular recess defining a sidewall spaced from said interior surface of said sidewall of the tubular member whereby said annular recess is formed therebetween, said sidewall defined by said annular recess containing at least one groove extending along the longitudinal extent of said sidewall from an upper portion of said sidewall toward a lowermost portion of said sidewall, and said sidewall defined by said annular recess being spaced from said interior surface of said sidewall of said tubular member a distance greater than the height of said inwardly-directed ridge.
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Hook James F
Protective Industries, Inc.
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