Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7886640 | Rotational cutting machine The present invention relates to a rotational cutting machine, it has a base, on the base is first motive power source to bring the cutting blade rotate; near the cutting blade is a fixing tool that tightly holds an object to be cut, on the side the fixing tool is a... | 02/15/2011 |
| 7398715 | Method for using a cutting tool having variable rotation about a y-direction transversely across a work piece for making microstructures A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with a tool tip. The actuator provides for variable control of a rotation of the tool tip about an axis parallel to a y-direction transversely across ... | 07/15/2008 |
| 7395741 | Method for using a cutting tool having variable and independent movement in an x-direction and z-direction into and laterally along a work piece for making microstructures A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with a tool tip. The actuator provides for independent and variable control of the movement of the tool tip in an x-direction into the work piece and ... | 07/08/2008 |
| 7395742 | Method for using a cutting tool having variable movement in a z-direction laterally along a work piece for making microstructures A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with a tool tip. The actuator provides for variable control of the movement of the tool tip in a z-direction laterally along the work piece, while mai... | 07/08/2008 |
| 7350442 | Cutting tool having variable movement in a z-direction laterally along a work piece for making microstructures A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with a tool tip. The actuator provides for variable control of the movement of the tool tip in a z-direction laterally along the work piece, while mai... | 04/01/2008 |
| 7350441 | Cutting tool having variable movement at two simultaneously independent speeds in an x-direction into a work piece for making microstructures A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with a tool tip. The actuator provides for variable control of the movement of the tool tip in an x-direction into the work piece at two simultaneousl... | 04/01/2008 |
| 7328638 | Cutting tool using interrupted cut fast tool servo A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with a tool tip. The actuator provides for control of the movement of the tool tip in an x-direction into and out of the work piece in order to make d... | 02/12/2008 |
| 7290471 | Cutting tool having variable rotation about a y-direction transversely across a work piece for making microstructures A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with a tool tip. The actuator provides for variable control of a rotation of the tool tip about an axis parallel to a y-direction transversely across ... | 11/06/2007 |
| 6227086 | Radial log clamp A rotating log saw clamp having a clamp infeed section and a clamp outfeed section located adjacent a log saw blade. The clamp infeed section and clamp outfeed section are coupled for rotation together with the log during sawing of at least a portion of t... | 05/08/2001 |
| 6220130 | Pipe machining apparatus Apparatus for machining the ends of pipe, which has a clamping section insertable into a section of pipe for forcible engagement with the interior of the pipe in fixed coaxial alignment therewith and a cutting section which includes a cylindrical mast, at... | 04/24/2001 |
| 5941144 | Radial log clamp A rotating log saw clamp having a clamp infeed section and a clamp outfeed section located adjacent a log saw blade. The clamp infeed section and clamp outfeed section are coupled for rotation together with the log during sawing of at least a portion of t... | 08/24/1999 |
| 5829330 | Apparatus for continuously cutting hollow profiled material to size An apparatus for continuously cutting hollow profiled material to size, including an entry unit for supporting a hollow profiled product towards a rotary head which cooperates with a fixed cutting unit provided with at least one cutting blade to be insert... | 11/03/1998 |
| 5816123 | Attachment for a lathe A machine tool which is a template tracing attachment which significantly reduces the slack or hysteresis in the operation of a machinist's lathe. Optical or magnetic scales and respective sensors assist in the accuracy of producing workpieces from a temp... | 10/06/1998 |
| 5761976 | Knife Assembly The present invention is directed to a knife assembly which is used to cut a rotating tube, such as a paper or plastic tube. The circular knife remains stationary during the cutting. After a number of cuts, the knife becomes dull. The present knife assemb... | 06/09/1998 |
| 5755146 | Radial log clamp A rotating log saw clamp having a clamp infeed section and a clamp outfeed section located adjacent a log saw blade. The clamp infeed section and clamp outfeed section are coupled for rotation together with the log during sawing of at least a portion of t... | 05/26/1998 |
| 5690007 | Cutting apparatus for obtaining a specimen of a food product container A cutting apparatus includes a mandrel insertable in a food product container. The mandrel supports the container in a fixed position by contacting an inner surface of the container. The mandrel is locatable on a support apparatus so that as the mandrel a... | 11/25/1997 |
| 5458031 | Core cutter An adjustable cardboard core cutter for precisely cutting cardboard tubes used as cores in steel slitting operations. The core cutter includes an axially fixed main shaft fixed core support plate, and an axially shiftable core support plate. Cores to be c... | 10/17/1995 |
| 5383380 | Material cutting machine for slicing a cylinder A machine for cutting slices from a cylindrical workpiece such as a log of pressure sensitive tape. The machine has a machine frame and a mandrel on the frame for holding and rotating the cylindrical workpiece. A disc shaped cutting blade is mounted on a ... | 01/24/1995 |
| 5261301 | Pipe cutting machine A portable pipe cutting machine comprises a frame, an arm having opposite ends and supported on the frame for pivotal movement about a pivot axis between the opposite ends, a cutting wheel rotatably mounted on one of the ends of the arm, and a hydraulic p... | 11/16/1993 |
| 5170684 | Core cutter device A device for separating a cardboard tube into cores for winding strips of material includes a mandrel mounted for rotation on a frame. A carriage reciprocates in parallel with a mandrel and may be positioned very precisely to cut cores of preselected axia... | 12/15/1992 |
| 4827816 | Cutting apparatus Tube cutting apparatus comprises means (4) supporting the tube (3, 11) during the cutting operation and at the same time allowing the rotatory movement of the tube about its longitudinal axis, a shaft (28), wherein a cutting blade (38) and a means (36) fo... | 05/09/1989 |
| 4663844 | Device for cutting an electrode casing The present invention relates to a device for cutting the casing on baked carbon electrodes. The device comprises a ring (1) which is freely suspended about the electrode. At least two clamping shoes (7) having vertical extending cutting edges (17) are pi... | 05/12/1987 |
| 4235136 | Trimming disc records A record transfer press including an apparatus for trimming flash from a disc record, said apparatus having a relatively movable drive means and trimming head.... | 11/25/1980 |
| 4114485 | Pipe cutter and beveler An apparatus is disclosed which is useful in cutting and beveling selective lengths of plastic pipe. The apparatus is supported on the pipe by reason of a closed frame which is releasably locked around the pipe. Rollers are provided in the frame for conta... | 09/19/1978 |
| 4072073 | Machine for cutting pipe and tubing A pipe cutting machine having a pair of driven rollers and a free wheeling cutter wheel with novel means for advancing the cutter radially into the work. A single column with rack and key adjustment arrangement accommodates different pipe diameters rapidl... | 02/07/1978 |
