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US 10,245,631 B2Granted
Roller set and pipe elements
AssigneeVictaulic Company
InventorDouglas R. Dole
Life of this patent
Estimating the term…
Abstract
A roller set for roll forming pipe elements has an outer roller that engages the pipe element at three points to prevent teetering of the pipe element. Inner and outer rollers cooperate to form pipe elements having a projection engageable by keys of mechanical couplings, the projection extending beyond the outer surface of the pipe element and increasing the pressure and bending performance of the combination pipe elements and coupling.
Claims22
A roller set for forming regions of a pipe element having an inner and an outer surface, said roller set comprising:
- an inner roller engageable with said inner surface, said inner roller comprising an inner roller body, a flange extending circumferentially around said inner roller body;
- an outer roller engageable with said outer surface, said outer roller comprising:
- an outer roller body rotatable about a first axis, said inner roller body being rotatable about a second axis, said flange projecting transversely to said second axis and being engageable with an end of said pipe element;
- a first raised feature comprising a first summit, engageable with said pipe element and extending circumferentially about said outer roller body and projecting radially from said first axis;
- a second raised feature comprising a second summit, engageable with said pipe element and extending circumferentially about said outer roller body and projecting radially from said first axis, said second raised feature being positioned adjacent to said first raised feature;
- a third raised feature comprising a third summit, engageable with said pipe element and extending circumferentially about said outer roller body and projecting radially from said first axis, said second raised feature being positioned between said first and third raised features;
- wherein
- said first and third summits are arranged in spaced relation away from said second summit.
5 more elements
A roller set for forming regions of a pipe element having an inner and an outer surface, said roller set comprising:
- an inner roller engageable with said inner surface and an outer roller engageable with said outer surface, said outer roller comprising:
- an outer roller body rotatable about a first axis;
- a first raised, engageable with said pipe element and extending circumferentially about said outer roller body and projecting radially from said first axis;
- a second raised feature, engageable with said pipe element and extending circumferentially about said outer roller body and projecting radially from said first axis, said second raised feature being positioned contiguous with said first raised feature;
- said inner roller comprising:
- an inner roller body rotatable about a second axis, a flange extending circumferentially around said inner roller body and projecting transversely to said second axis and being engageable with an end of said pipe element;
- a first depression extending circumferentially around said inner roller body;
- a second depression extending circumferentially around said inner roller body and positioned adjacent to said first depression;
- a projection extending circumferentially around said inner roller body and projecting radially from said second axis, said projection being positioned between said first and second depressions and having a radius greater than the radius of a portion of said inner roller proximate to said second depression;
- wherein
- when said inner and outer rollers cooperate to form said region of said pipe element said first and second raised features align respectively with said first and second depressions.
8 more elements
A roller set for forming regions of a pipe element having an inner and an outer surface, said roller set comprising:
- an inner roller engageable with said inner surface, said inner roller comprising an inner roller body, a flange extending circumferentially around said inner roller body;
- an outer roller engageable with said outer surface, said outer roller comprising:
- an outer roller body rotatable about a first axis, said inner roller body being rotatable about a second axis, said flange projecting transversely to said second axis and being engageable with an end of said pipe element;
- a first raised feature comprising a first summit, engageable with said pipe element and extending circumferentially about said outer roller body and projecting radially from said first axis;
- a second raised feature comprising a second summit, engageable with said pipe element and extending circumferentially about said outer roller body and projecting radially from said first axis, said second raised feature being positioned adjacent to said first raised feature;
- a third raised feature comprising a third summit, engageable with said pipe element and extending circumferentially about said outer roller body and projecting radially from said first axis, said second raised feature being positioned between said first and third raised features;
- wherein
- said first and third summits are arranged in spaced relation away from said second summit;
- said first raised feature comprises a conical surface extending lengthwise along said outer roller body, said conical surface having a smaller radius positioned adjacent to said second raised feature and a larger radius positioned distal to said second raised feature;
- and
- said third raised feature comprises a curved surface having a maximum radius substantially equal to said larger radius of said conical surface, said maximum radius and said larger radius being measured from said first axis.
8 more elements
Dependencies are inferred from the claim text.