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| Number | Title | Issue Date |
| 6295708 | Tip cleaning system for welding nozzle An apparatus and a method are described for dislodging and removing welding slag from the tip of an electric arc welder, particularly a robotically controlled welder. When a torch finishes its welding cycle, it is moved to a designated cleaning point wher... | 10/02/2001 |
| 5809603 | Pipe cleaning tool A pipe cleaning tool (10) comprises a cleaning assembly (12) and a hollow riser (14) received over the assembly (12). The cleaning assembly (12) defines and axis of rotation and includes a drive shaft (16) for rotating the assembly about the axis and resi... | 09/22/1998 |
| 5363530 | Pipe joint cleaner A pipe joint cleaner device primarily for plastic pipes which after being cut are to be joined together comprising an open tapered cone member having a plurality of sharp raised projections on both the exterior face of such cone and on the interior face t... | 11/15/1994 |
| 4912799 | Water main scraper A scraper for use in repairing underground pipe breaks consisting of two parallel chains carrying transverse square scraper rods.... | 04/03/1990 |
| 4530127 | Thread cleaning device A tool having opposed cleaning heads for sequentially engaging and cleaning the opposed threaded ends of pipe joints. A pipe end is engaged and cleaned by a brush located on one of the cleaning heads. The pipe is moved longitudinally to position the remai... | 07/23/1985 |
| 4198789 | Sleeve assembly A sleeve assembly for sanding, rust removing, and pit filling on a piston rod of a hydraulic cylinder or the like includes a sanding component, a rust removing component and a pit filling component. The sanding component comprises a rigid annular outer me... | 04/22/1980 |
| 4179856 | Sanding sleeve assembly A sleeve assembly for sanding a piston rod of a hydraulic cylinder or the like comprises a rigid annular outer member, a resilient annular intermediate member adhesively secured to the inner surface of the outer member, and an abrasive annular inner membe... | 12/25/1979 |
| 4165626 | Wash water supplying drive head and scraper and cutter assembly An improved wash water supplying drive head and scraper and cutter assembly for use on an apparatus that sequentially receives tubular members such as oil well tubing, with each tubular member when in position on the apparatus being straightened, having r... | 08/28/1979 |
| 4131005 | Tubular member straightening, descaling and hydraulic testing apparatus An apparatus and method of using the same to sequentially subject tubular members such as oil well tubing, drill pipe and the like from a stack thereof to a sequence of operations in which each tubular member while mounted in the apparatus is straightened... | 12/26/1978 |
| 4089137 | Sleeve assembly A sleeve assembly for sanding, rust removing, and pit filling on a piston rod of a hydraulic cylinder or the like includes a sanding component, a rust removing component and a pit filling component. The sanding component comprises a rigid annular outer me... | 05/16/1978 |
| 4033075 | Mechanism for adjustably positioning planetary machining elements A planetary machining apparatus comprises a rotor and one or more drive spindle assemblies mounted thereon. Each drive spindle assembly includes a rotary spindle support mounted for rotation on the rotor about an axis parallel to and radially spaced from ... | 07/05/1977 |
| 4002491 | Removal of coatings by rotating chain flails Coatings are loosened for removal from various substrates by rotating a chain-like flail against the coating while maintaining the flail oriented and positioned with respect to the surface of the coating so that the next-to-last terminal link of the flail... | 01/11/1977 |
