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US 9,309,641 B2Granted
Adjustable mount for positioning a coffer dam
OwnerGregory B Burkhardtinventor
Life of this patent
Estimating the term…
Abstract
Apparatus including fluid motors and a pair of collars for adjustably mounting a coffer dam upon a piling by assembling equipment while operating above the water line thereby avoiding the need for underwater divers to perform dangerous underwater operations. Also included are a plurality of scrapers that are biased against the piling for removing accumulated detritus during upward and downward movement of the scrapers upon the piling.
Claims5
Apparatus for adjustably positioning a coffer dam upon a piling,
- said apparatus including a pair of vertically spaced collars for encircling a piling and being operatively connected to each other by a plurality of fluid motors vertically arranged for selectively raising and lowering said collars relative to each other;
- said collars being comprised of arcuate sections for circumscribing the piling;
- and inflatable means disposed within said arcuate members for alternatively securing and releasing said arcuate members to and from the piling.
Dependencies are inferred from the claim text.