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 |
| 7032464 | Closed-loop waterbrake dynamometer fluid volumetric control system and method A waterbrake dynamometer fluid volumetric control system and method includes a closed-loop recirculation passage to maintain a substantially constant fluid volume within the waterbrake. Fluid volume within the waterbrake is controlled by selectively supplying fluid ... | 04/25/2006 |
| 6301975 | Torque sensor having improved reliability against thermal expansion and axial displacement of components A torque sensor having a plurality of axial grooves formed on an outer circumferential surface of the end portion of a first rotation shaft to which a cylindrical member is fixed so as to be extended in an axial direction of the first rotation shaft. A ci... | 10/16/2001 |
| 5152184 | Thermal test liner apparatus and method A cast virgin TEFLON liner is provided for steel test cylinders used in thermal testing of a sample of drilling mud or additives. The liner has a hollow cylindrical body closed at one end and open at the other. A disc-shaped lid fits inside the open end o... | 10/06/1992 |
| 4109519 | Dynamometer employing multiple disc brake assemblies A disc brake dynamometer including a base, a shaft adapted to be coupled to a rotary motive source to be tested, a pair of axially spaced, fluid-cooled, disc brakes concentric about the shaft and each having two relatively rotatable members, one of the me... | 08/29/1978 |
| 4062233 | Dynamometer A dynamometer is provided having a housing mounted to allow at least partial rotational displacement about its longitudinal axis, with a frictional engaging means connected thereto for engaging the external surface of a rotatable drum. This drum, which is... | 12/13/1977 |
| 4062234 | Dynamometer test stand A test stand for vehicles having opposed motive drive outputs including a stand for supporting the vehicle to be tested in a predetermined position with its motive drive outputs free from engagement with surrounding structure, a pair of dynamometers, one ... | 12/13/1977 |
