Pipe grooving device
AssigneeVictaulic Company
InventorDouglas R. Dole
Life of this patent
Estimating the term…
Abstract
A device for forming circumferential grooves in pipe elements uses multiple geared cam bodies mounted on a carriage which rotates about a fixed pinion. The gears engage with the pinion which causes the geared cam bodies to rotate relative to the carriage. Traction surfaces and cam surfaces on the cam bodies traverse the outer surface of the pipe element and impress a circumferential groove therein. To substantially prevent rotation of the pipe element the pitch circle diameter of the pinion equals the outer diameter of the pipe element and the pitch circle diameters of the traction surfaces equal the pitch circle diameters of the gears.
Claims25
A device for forming a circumferential groove in a pipe element, said device comprising:
- a pinion fixed against rotation about a pinion axis arranged coaxially with said pinion;
- a carriage surrounding said pinion, said carriage being rotatable about said pinion axis and defining an opening arranged coaxially with said pinion axis for receiving said pipe element;
- a plurality of gears mounted on said carriage, each said gear being rotatable relatively to said carriage about a respective gear axis, each said gear engaging with said pinion;
- a plurality of cam bodies, each said cam body mounted on a respective one of said gears;
- a plurality of first cam surfaces, each one of said first cam surfaces extending around a respective one of said cam bodies and engageable with said pipe element received within said opening, each one of said first cam surfaces comprising a region of increasing radius, each one of said first cam surfaces comprising a first discontinuity of said first cam surface.
Dependencies are inferred from the claim text.