Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5314270 | Plunge cutting device and method for pipes A plunge cutting device for plastic pipe, pipe couplings, plastic flanges and other planar members includes a cylindrical body including slots formed therein, a pilot for guiding the cylindrical body, and cutters adjustably mounted in the slots. A canted ... | 05/24/1994 |
| 5304018 | Plunge cutting device and method for plastic pipe members such as pipe couplings, flanges, hubs, and the like A universal plunge cutter for plastic pipe, pipe couplings, plastic flanges and other planar members, is provided. The plunge cutter has a cylindrical body supporting cutters, a drive shaft, a pilot mandrel for guiding the cylindrical body. The cutters ar... | 04/19/1994 |
| 5013193 | Closet flange reboring tool A plastic closet flange reboring tool having an elongated arbor, a cutting member and two exchangeable non-circular guide members. The arbor having a first end structured of a D-shaped threaded extension, and a second end structured for releasable connect... | 05/07/1991 |
| 4930948 | Valve seat refitting apparatus A valve seat refitting apparatus. A cylindrical main body portion has a longitudinal bore which receives a centering guide. Longitudinal slots around the outer periphery of the main body portion receive cutting blades rigidly attached to cutting blade sup... | 06/05/1990 |
| 4626143 | Spot facer and boring head having replaceable carbide cutters A rotating cutting tool has a clamping system that positively locks generally square or rectangular carbide cutters into position on the cutter head and extending outwardly from the head for spot facing or boring as the head is rotated. The head has backi... | 12/02/1986 |
| 4626145 | Goldsmith's wax ring pre-form sizing tool A tool for precisely sizing wax ring pre-forms used by jewelers and goldsmiths in the manufacture of hand carved jewelry which is readily adjustable to the desired ring size and which is then hand operated to scrape the wax preform to the desired diametra... | 12/02/1986 |
| 4295763 | Plug cutter A cutter for use in making plugs of wood or the like to be used in the insulation industry for plugging holes made in order to provide insulation in an existing structure. The cutter is adapted to be held in a chuck or the like for rotation about a centra... | 10/20/1981 |
| 4218163 | Rotary cutting tool with offset cutting element A cutting tool includes a shank with one end adapted to be secured to a rotary chuck. Spaced inwardly from an opposite end is a transversely extending radially offset aperture extending through the shank for receiving a cutting tool. A threaded aperture e... | 08/19/1980 |
| 4178115 | Valve seat ring installation tool A tool for cutting or reaming a counterbore in a workpiece is guided by a pilot member secured in a bore. The tool includes a rotatable blade holder having a plurality of attached cutter blades. One of the cutter blades has a lateral cutting edge at a pre... | 12/11/1979 |
| 4130371 | Cutting insert and rotary cutter tool The rotary cutter tool assembly, including cutting insert, of the present invention is adapted to perform a finishing operation within a tube in such manner that tube wall thickness is ensured. To this end, the novel insert is provided with a guiding surf... | 12/19/1978 |
| 4043699 | Counterbore tool A counterbore tool having a removable cutting tool in which the cutting tool is disposed in an open slot of the shank, the slot extending inwardly from the outer extremity of the shank and in which the pilot member is secured in telescoping engagement wit... | 08/23/1977 |
| 3944379 | CUTTING APPARATUS Apparatus for cutting work provided with centering means and supported adjacent a housing drivably mounted for rotation on a frame, the housing being arranged to support a floating, cutting assembly having a cutting head and centering means for initial al... | 03/16/1976 |
