...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 6289750 | Device for measuring tensile stress distribution in a metal strip A method for measuring the tensile stress distribution over the width of the metal strip is provided. In order to measure the tensile stress in a metal strip between two roll stands or between a roll stand and a coiler or a guide roll, a force is exerted ... | 09/18/2001 |
| 6044717 | Pressure and force profile sensor and method for detecting pressure A pressure sensor is provided which can detect the presence, absence or magnitude of pressure, as well as a pressure profile. The pressure sensor includes a sensor membrane and a sensor device. The sensor membrane is flexible and may be constructed of a c... | 04/04/2000 |
| 5886268 | Pressure measuring device A method for measurement of axial forces acting on a shaft, being supplied with gas under overpressure such that gas pressure is built up between two opposing faces of said portion projecting radially from the shaft and at least one gas-permeable body pro... | 03/23/1999 |
| 4586388 | Three force balanced mechanism In a three force balanced mechanism comprising a floating pivot, an input force transmitting member, a feedback force transmitting member, one end of the input force transmitting member and one end of the feedback force transmitting member pivot in differ... | 05/06/1986 |
| 4481831 | Fluent solid material flow transducer A pulverulent material flow transducer has a frame that mounts on the exterior of a conduit in a pulverulent material transporting system. A load cell in the frame includes a sealed chamber one side of which is formed by a resilient control diaphragm, and... | 11/13/1984 |
| 4474063 | Measuring amount of bulk materials contained in storage tanks A load cell in the bottom of a storage tank measures the weight of bulk material contained in the tank. The load cell has a flexible diaphragm to which the weight of the bulk material is applied. The flexible diaphragm moves down away from a neutral no-lo... | 10/02/1984 |
| 4282749 | Strain measuring system This invention relates to strain measuring systems. In a preferred embodiment of the invention the system comprises four (4) strain responsive tubes arranged in bridge fashion and carrying a fluid stream under pressure. As strain deforms the tubes the flu... | 08/11/1981 |