Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7377051 | Coiled tubing counter A tubing counter for counting coiled tubing inserted into a well includes an outer housing having a through passage for receiving the coiled tubing therethrough. In some embodiments, pressure rated connectors at both of the ends of the outer housing sealably connect... | 05/27/2008 |
| 7131208 | Method, device and cartridge for measuring fluctuations in the cross-sectional area of hair in a pre-determined scalp area A flexible measuring tape is extended from a predetermined location on a face a predetermined distance to a location on a scalp. A 2 cm by 2 cm square bundle of hair about that location is isolated. The bundle of isolated hair is captured in a slit in a two-part car... | 11/07/2006 |
| 4920274 | Metering apparatus and method for the measurement of a fixed length of continuous yarn or strand This invention presents both a method and device capable of accurately measuring fixed lengths of moving strand or yarn as it is pulled from an essentially continuous source of supply and wound onto a take-up reel by an appropriately powered winding mecha... | 04/24/1990 |
| 4700486 | Measuring the thickness for a continuous material web An arrangement for measuring the thickness of a continuous material web. The thickness of the material web is measured by pressing from opposite sides of the web, and on the same spot, wheels which can rotate against the web. One wheel is equipped with a ... | 10/20/1987 |
| 4217695 | Hair length measuring apparatus A hair length measuring apparatus includes a measuring roller and holding clamp operatively mounted on a handle, said holding clamp holding against said roller the hair being measured, such that as said handle is moved along the length of said hair, said ... | 08/19/1980 |
| 4171575 | Actual sew length measuring device The lengths of one or more fabric workpieces are measured by rolling a toothed measuring wheel over each fabric workpiece as it is passed through a sewing machine and conveying the revolutions of the measuring wheel to an electronic, digital counter by me... | 10/23/1979 |
| 4024645 | Method and apparatus for measuring length The invention provides an apparatus and method for continuously measuring the length of linear material during winding of the material onto a rotating core to form a package. First means form an electrical signal whose frequency is proportional to the ins... | 05/24/1977 |
