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 |
| 6964382 | Grip cover for coating dispensing device hand grip A grip cover is provided for fitting over the hand grip of a coating dispensing device for dispensing coating material. The grip cover includes material for cushioning a hand of an operator using the coating dispensing device. ... | 11/15/2005 |
| 6918551 | Dual purge manifold A coating material dispensing system including a coating dispenser having a terminal for coupling to a high-magnitude potential supply, supply valves having respective input ports, respective output ports, and respective control ports, first purge valves having resp... | 07/19/2005 |
| 6916023 | Self-adjusting cartridge seal A seal includes a first seal retainer, a seal holder and a second seal retainer. A somewhat cup-shaped recess of the first seal retainer opens in a first direction of motion of a movable member against which the seal is to seal. The seal holder includes a first some... | 07/12/2005 |
| 4169545 | Plural component dispensing apparatus A plural component dispensing system includes supplies which furnish first and second components under pressure to a dispensing apparatus having first and second valves, respectively. Each of the valves includes a rotatable valve member in a combination r... | 10/02/1979 |
| 4165022 | Hand-held coating-dispensing apparatus An electrostatic, coating-dispensing apparatus includes an electrode upon which an electrostatic potential is impressed. The electrostatic potential is developed by a switching circuit, autotransformer and voltage multiplier from rectified line voltage. T... | 08/21/1979 |
| 4161666 | Imbalance determining apparatus Apparatus for determining the amount and location of imbalance in an article which is to be balanced about its axis includes a table for receiving the article and for positioning its axis. The table is supported upon a base for substantially free tilting ... | 07/17/1979 |
| 4159806 | Operation sequence control system An apparatus for controlling a color change sequence of automatic paint spray equipment. The apparatus controls the performance of various cleaning functions when it is desired to convert the spray equipment from spraying one color of paint to spraying of... | 07/03/1979 |
| 4148932 | Atomization in electrostatic coating A method of atomizing liquid paint using a rotating atomizing device and electrostatically coating an article with a smooth homogeneous film of paint and without the generation of foam or other surface irregularities on the article being coated, wherein a... | 04/10/1979 |
| 4129966 | Grinder apparatus with pollution control fluid dispensing means A hand-held grinder including a motor, a motor output shaft and a grinding tool mounted on the motor output shaft. Water is supplied from a source through a port into a sealed annular chamber surrounding the output shaft. A bore extends concentrically thr... | 12/19/1978 |
| 4117715 | Apparatus for measuring charge on, and density of, airborne particulates A simple, inexpensive, hand-held and operated apparatus for providing a substantially immediate indication of the density of, and charge on, airborne particulate contaminants of a predetermined size or within a predetermined size range includes a first fi... | 10/03/1978 |
| 4106964 | Balance correction method and apparatus A method and apparatus for correcting imbalance occurring in pneumatic tires during their manufacture. Correction is made by depositing on the inside surface of the tire, at a balance-correcting position, a measured quantity of an uncured, quick-curing, u... | 08/15/1978 |
