Pipe receiving assembly for a pipe grooving device
AssigneeVictaulic Company
InventorDouglas R. Dole
Life of this patent
Estimating the term…
Abstract
A pipe grooving device includes an assembly adapted to receive an end of the pipe. The assembly includes a cup which surrounds a pipe end stop. The cup and the pipe end stop may be mounted on a fixed pinion about which a carriage rotates. The carriage carries geared cams which engage the pinion and rotate synchronously when the carriage rotates relatively the pinion. The cams engage a pipe element received by the cup and form a circumferential groove in the pipe element. The cup and the pipe end stop move independently of one another axially along a pinion shaft to actuate rotation of the carriage. The cup accommodates dimensional pipe diameter tolerances and mitigates pipe flare and maintains pipe roundness during the grooving process.
Claims24
An assembly adapted to receive an end of a pipe element, said assembly comprising:
- an axis;
- a cup comprising a hub arranged coaxially with said axis, a back wall extending outwardly from said hub transversely to said axis, a sidewall attached to said back wall and arranged coaxially with said axis, said back wall and said side wall defining an interior, said sidewall having an inner surface, said inner surface have a first diameter located distal to said back wall and a second diameter located proximate to said back wall, said first diameter being larger than said second diameter, said interior adapted to receive said pipe element;
- a pipe end stop positioned within said interior between said first and second diameters, said pipe end stop comprising a sleeve received coaxially within said hub and a plate mounted on said sleeve and extending outwardly therefrom transversely to said axis, said plate defining a pipe engaging surface facing away from said back wall;
- a pinion shaft defining a bore coaxially aligned with said axis, said cup being mounted on said pinion shaft;
- a stop spring acting between said pinion shaft and said sleeve for biasing said plate of said pipe end stop away from said back wall of said cup;
- and
- a cup spring acting between said cup and said pinion shaft for biasing said back wall of said cup toward said plate of said end stop;
- wherein
- said pipe end stop is movable along said axis toward and away from said back wall of said cup.
An assembly adapted to receive an end of a pipe element, said assembly comprising:
- an axis;
- a cup comprising a hub arranged coaxially with said axis, a back wall extending outwardly from said hub transversely to said axis, a sidewall attached to said back wall and arranged coaxially with said axis, said back wall and said side wall defining an interior, said sidewall having an inner surface, said inner surface have a first diameter located distal to said back wall and a second diameter located proximate to said back wall, said first diameter being larger than said second diameter, said interior adapted to receive said pipe element;
- a pipe end stop positioned within said interior between said first and second diameters, said pipe end stop comprising a sleeve received coaxially within said hub and a plate mounted on said sleeve and extending outwardly therefrom transversely to said axis, said plate defining a pipe engaging surface facing away from said back wall;
- wherein
- said pipe end stop is movable along said axis toward and away from said back wall of said cup, and
- said pipe engaging surface of said plate of said pipe end stop comprises a reverse cone surface, said reverse cone surface having an increasing slope when measured in a direction extending radially outwardly from said sleeve.
Dependencies are inferred from the claim text.