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.
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| Number | Title | Issue Date |
| 7377987 | Steel cutting system and method A steel cutting system has a cutting torch on a first side of a slab of steel. A pair of oxygen jets is placed on a second side of the slab of steel. ... | 05/27/2008 |
| 7356240 | Processing method of polymer crystal, processing system of polymer crystal, and observation system of polymer crystal The ultraviolet short-pulse laser light emitted from the ultraviolet short-pulse laser light source 1 is focused on and caused to irradiate a macromolecular crystal 8 contained in a sample container 6 via a shutter 2, intensity adjusting ... | 04/08/2008 |
| 7118634 | Low-pressure cementation method The invention relates to a low-pressure carburising method comprising alternating low-pressure enrichment steps and diffusion steps in the presence of a neutral gas. During the enrichment steps, an enriching gas and neutral gas mixture is used, the proportion of the... | 10/10/2006 |
| 5102473 | Process and device to transversely cut metal workpieces Metal pieces such as blooms, continuously cast billets and cogged ingots, are cut by a deep-frozen, liquid cutting medium, in particular liquid oxygen, exiting from a nozzle at high pressure. The workpiece is moved in the longitudinal direction and the no... | 04/07/1992 |
| 4758284 | Cutting apparatus receptacle device and method of using same In a cutting system, a cutting system receptacle device and method of using it for receiving a cutting jet emerging from a work piece being cut, as well as receiving and retaining waste materials or debris. A cutting system receptacle device includes a ge... | 07/19/1988 |
| 4505761 | Method and apparatus for quenching a torch-cut work-piece A method and apparatus for quenching a torch-cut work-piece wherein a spray curtain is mounted on a bearing with approximately 30° of the circular spray eliminated immediately behind the direction of travel. The spray direction is controlled by a frictio... | 03/19/1985 |
| 4441934 | Process and apparatus for exhausting fumes and oxide particles generated by plasma-arc cutting machine A process and apparatus for absorbing and exhausting efficiently dust (oxide particles), fumes, smoke, harmful gases and the like generated by plasma-arc cutting. The lower space of a fixed board for supporting the material which is cut is divided by plur... | 04/10/1984 |
| 4405382 | Scarfing burner arrangement During the flame cutting of a workpiece, a slag bead is produced and is removed by a scarfing burner directed only towards the cut surface of the workpiece.... | 09/20/1983 |
| 4379002 | Method and equipment for dividing slabs into predetermined widths In the process of conveying a slab from continuous casting or large ingot casting equipment by means of a conveyance table comprising conveyance rollers, the slab is stopped on the table and raised therefrom and, at the raised position, the slab is divide... | 04/05/1983 |
| 4336078 | Process and apparatus for the separation of metallurgical products A process and apparatus for separating metallurgical products such as ingots, slabs or plate-shaped workpieces using a cutting torch disposed on one side of the product which follows a prescribed cutting line and which forms a front cutting edge on the su... | 06/22/1982 |
| 4260433 | Method of forming and collecting slag products formed at a melting process, especially at gas planing A method of forming and collecting slag products in connection with gas planing, at which method the melt is moved in an ambient atmosphere through such a distance, that the substances in the melt are oxidized and/or cooled so much prior to their collecti... | 04/07/1981 |
| 4214922 | Conveyor installation and method for handling workpieces An installation (10) for handling a workpiece W1 including a first station (12) for loading a workpiece, a second station (14) for working on the workpiece, a third station (16) for unloading the workpiece, and a conveyor (18), extending in a c... | 07/29/1980 |
| 4168055 | Cutting torch for through cutting workpieces A cutting torch for through cutting workpieces includes a torch stem having its cutting tip directed toward the workpiece with a shielding arrangement attached to the stem for enveloping the cutting area with a mixture of water and compressed air; separat... | 09/18/1979 |
| 4120703 | Method and apparatus for reducing smoke and preventing secondary fins during scarfing A thermochemical scarfing process and apparatus capable of reducing the amount of smoke discharged to the atmosphere and/or of preventing the formation of "secondary" fins when spot scarfing, comprising: (a) scarfing oxygen is directed against a reaction zone ... | 10/17/1978 |
| 4115152 | Method and device for gas planing a workpiece surface to remove surface defects A method and a device for gas planing with at least one gas planing device, at which the gas flowing out of the device is shielded off in lateral direction, and gas streams are directed substantially perpendicular from both sides to the gas flowing out of... | 09/19/1978 |
| 4115153 | Method at gas planing A method of gas planing for removing surface defects on a workpiece, where the working gas is supplied to the workpiece via a planing device, and air or another non-oxidizing gas mixture under pressure is supplied to the melt at the completion of the plan... | 09/19/1978 |
| 3934818 | Method of oxy-fuel cutting Method of oxy-fuel cutting of thin plate the improvement of which comprises surrounding the cutting flame with an admixture of air and water.... | 01/27/1976 |
| 3932199 | Process for the flame-scarfing of faulty areas A process for flame scarfing places of errors or surface defects on a work piece such as ingots, slabs or the like, by means of at least one flame-scarfing torch is characterized by raising and/or accelerating the flame-scarfing torch from its flame-scarf... | 01/13/1976 |
