Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 5440925 | Flow calibrator The invention relates to a high accuracy flowmeter for testing and calibrating flowmeters and the like, and more particularly to a positive displacement flowmeter which may include a cylinder (12), a piston (10) within the cylinder (12) which makes a clea... | 08/15/1995 |
| 4747307 | Liquid flow meter A positive displacement liquid flow meter uses two variable volume chambers 16,18 arranged in parallel, each with a reciprocable piston 24,26. While liquid from one chamber is being fed to the outlet 11, the other chamber is being charged with the liquid ... | 05/31/1988 |
| 4356727 | Continuous volume measuring system A continuous volume measuring device for measuring the cumulative volume of a flowing fluid. The device includes a pair of coupled expandable chambers, and the fluid flow is directed into a first chamber to expand it while the second chamber is contractin... | 11/02/1982 |
| 4331033 | Precision flowmeter A precision positive displacement flowmeter for providing an accurate measurement of fluid flow at one end of a fluid circuit, comprising a cylinder and piston arrangement constructed to receive and emit circuit fluid continually, and an indicator arrange... | 05/25/1982 |
| 4192185 | Flowmeter for liquids A flowmeter for measuring the throughput of a liquid from a source to a load, especially for gasoline, diesel oil, heating oil and the like, comprises at least two measuring cylinders having floating pistons and respective reversing elements which have tw... | 03/11/1980 |
