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 |
| 7179018 | Apparatus and method for working asphalt pavement A method and apparatus for working asphalt pavement, comprising one or both of a mechanical, hydraulic, electric, or pneumatic means for providing high-speed rotation; a rotary tool comprising a first end comprising a working surface and a second end adapted for con... | 02/20/2007 |
| 7147064 | Laser spectroscopy/chromatography drill bit and methods A drilling apparatus for well-boring having a drill bit assembly which includes a laser cutting assembly and a vacuum assembly. The vacuum assembly is adapted to intake vapors generated by the laser cutting assembly proximate the drill bit assembly during operation ... | 12/12/2006 |
| 6880646 | Laser wellbore completion apparatus and method A method and apparatus for providing fluid flow into a wellbore in which an apparatus having at least one laser energy output is lowered into the wellbore and the at least one laser energy output is directed at a wall of the wellbore. At least a portion of the wall ... | 04/19/2005 |
| 5771984 | Continuous drilling of vertical boreholes by thermal processes: including rock spallation and fusion Various rock spallation devices and methods reduce the cost of deep hole excavation. A spallation head has rotating, circumferentially spaced jets. The jets may be combustion flame jets or very hot water. In a combustion embodiment, air and water are deli... | 06/30/1998 |
| 4776638 | Method and apparatus for conversion of coal in situ A method for the electro-thermal and electrochemical underground conversion of coal into oil and by-products comprises the steps of inserting an underground probe into a bore hole until the probe is in close proximity to a coal seam. A mixture of air, ste... | 10/11/1988 |
| 4394076 | Indicia recording apparatus Apparatus for recording characters on a photographic record medium including spaced feed and takeup reels for carrying a roll of the medium. A support such as a cylinder is disposed between the reels supports the record medium. A carriage is controllably ... | 07/19/1983 |
| 4260194 | Method and device for producing underground cavities using a driving shield A method of producing an underground cavity in a driving shield advance operation comprises, prior to excavation, forming an annular slot corresponding to the contour and wall thickness of the shield ahead of the shield by using hot gas jets to form the s... | 04/07/1981 |
| 4190121 | Thermal drilling device A thermal drilling device which operates in a rotary or circumferentially oscillatory motion and which is particularly adapted for drilling geological formations comprises a drill body which has an interior combustion chamber with a bottom having an outle... | 02/26/1980 |
| 4073351 | Burners for flame jet drill A burner in the form of a flame jet drill bit engine for liquid fuels is disclosed. The burner has particular utility in a flame jet drill and comprises an axially elongated body with a combustion chamber disposed therein. At least one flame jet nozzle is... | 02/14/1978 |
| 3991817 | Geothermal energy recovery Apparatus and method for recovering resources from subterranean rock formations, particularly heat energy, and more particularly geothermal energy. A heat-drill, which has means associated therewith for removing some rock from the earth and forming other ... | 11/16/1976 |
| 3934659 | Apparatus for drilling holes in earth surface The apparatus is a rocket with a drill head provided with a group of jet nozzles. One nozzle of this group is the face-forming one, while the plurality of the rows of the rest of the nozzles belong to imaginary circles concentric with the longitudinal axi... | 01/27/1976 |
