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US 4,069,534 AGranted
Drain opener
OwnerArthur Seymon Martininventor
Life of this patent
Estimating the term…
Abstract
An improved drain "snake" head having rotating bearings. Bearings operating upon a transverse axis. A flexible, but stiff, wire line with the described head at the forward terminus for projecting through the pipe trap or gooseneck underneath a sink, lavatory, or similar structure.
Claims3
A drain opener comprising:
- a head for a flexible snake member, said head comprising a nose for attachment onto the flexible snake member, said nose having a forwardly projecting web end having opposed substantially flat surfaces, said web end having a substantially hemicylindrical forward surface, and an opening through said web end substantially normal to said flat surfaces;
- a pivot pin extending through said opening;
- first and second rollers mounted on said pivot pin respectively adjacent said first and second flat surfaces of said web end so they rotate with respect to said web, said first and second rollers each having a substantially cylindrical outer diameter, each of said rollers having a frusto-conical surface away from said web end, the total included angle of said frusto-conical surface being more than 45.degree. and less than 90 degrees, the total length of said first and second rollers in the direction of said pivot pin when said rollers are located adjacent said web being greater than said cylindrical outer diameter of said rollers, the width of said web and said radius of said forward end of said web being substantially equal to and no larger than said cylindrical outer diameter of said rollers and said rollers lying substantially against said web end so that said web end substantially fills the space between said rollers.
Dependencies are inferred from the claim text.