Pipe cutting apparatus
AssigneePrecision Piping & Instruments, Inc.
InventorD. E. Hale, Jr.
Life of this patent
Estimating the term…
Abstract
This invention relates to a pipe cutting apparatus for cutting large diameter pipe. The apparatus is provided with a cutting means which can be angled for cutting miters. The cutting means can be a torch. The apparatus has a flexible drive mechanism which adjusts for variations in cutting angle. Torque is communicated to the cutting means by a motor via clutch means.
Claims28
A pipe cutting apparatus for cutting pipe from within the pipe, comprising:
- a first rotatable rod;
- first and second support discs having short widths supporting a second rotatable rod, said first disc being spatially closer to said cutting means than said second disc;
- a cutting means connected at one end of said first rotatable rod;
- a connecting rod for connecting said first and second rotatable rods, said connecting rod having connecting means for positioning said first and second rotatable rods at different angles relative to each other;
- a drive means mounted on said second disc;
- and
- means for changing the cutting angle of said cutting means.
A pipe cutting apparatus for cutting round pipe from within the pipe, comprising:
- a first rotatable rod;
- first and second support discs having short widths supporting a second rotatable rod, said first disc being spatially closer to said cutting means than said second disc;
- a metal cutting means for round pipe connected at one end of said first rotatable rod;
- a connecting rod for connecting said first and second rotatable rods, said connecting rod having connecting means for positioning said first and second rotatable rods at different angles relative to each other;
- a drive means mounted on said second disc;
- and
- means for changing the cutting angle of said cutting means.
A pipe cutting apparatus for cutting pipe from within the pipe, comprising:
- a torch head mounted on a rack support, said torch head connected to a first rotatable rod, first and second cylindrical disc supports having short widths through which a second rotatable rod is axially positioned, and said second rotatable rod at a first end is connected to said first rotatable rod by a connecting rod, thus forming a continuous rotatble flexible rod;
- drive means supported by said second disc;
- clutch means mounted on said second rotatble rod for transmitting torque from said drive means to said second rotatable rod, said second rotatable rod transmits torque to said rod connector, which transmits torque to said first rotatable rod to rotate said torch head;
- a piston cylinder for adjusting the cutting angle of said torch head relative to said first disc, said cylinder rod connected at a first end to said first disc and at its opposing end to a central support rotatably connected to first and second support plates attached to said first disc, and said first rotatable rod extends longitudinally through said central support;
- said first end of said second rotatable rod has telescoping means for shortening said first end as said piston cylinder, starting from a fully retracted position, is extended to change the cutting angle of said torch head relative to said first disc.
A round pipe cutting apparatus for cutting metal pipe from within the pipe, comprising:
- a torch head mounted on a rack support, said torch head connected to a first rotatable rod, first and second cylindrical disc supports having short widths through which a second rotatable rod is axially positioned, and said second rotatable rod at a first end is connected to said first rotatable rod by a connecting rod, thus forming a continuous rotatable flexible rod;
- drive means supported by said second disc;
- clutch means mounted on said second rotatable rod for transmitting torque from said drive means to said second rotatable rod, said second rotatable rod transmits torque to said rod connector, which transmits torque to said first rotatable rod to rotate said torch head;
- a piston cylinder for adjusting the cutting angle of said torch head relative to said first disc, said cylinder rod connected at a first end to said first disc and at its opposing end to a central support rotatably connected to first and second support plates attached to said first disc, and said first rotatable rod extends longitudinally through said central support;
- said first end of said second rotatable rod has telescoping means for shortening said first end as said piston cylinder, starting from a fully retracted position, is extended to change the cutting angle of said torch head relative to said first disc.
Dependencies are inferred from the claim text.