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| Number | Title | Issue Date |
| 7402425 | Stress-based electrostatic monitoring of chemical reactions and binding Electrostatic capacitance measurements are used to detect chemical or biological analytes, or chemical interactions, with great sensitivity. A diaphragm is coated with a material capable of selectively interacting with an analyte of interest, and interaction of the ... | 07/22/2008 |
| 6953046 | Microprocessor-based gas meter A microprocessor-based gas meter has fully electronic control, safety cutoff and data communication functions, while remains the same size of a conventional gas meter. The control circuit board in the microprocessor-based gas meter is mounted inside the main body of... | 10/11/2005 |
| 5515722 | Gas meter with unitary central core defining multiple flow passages A dry gas meter includes a unitary core which functions as the meter casing and defines the inner sides of two gas chambers, a valve gear chamber, an index housing and multiple gasways. A central partition of the core has angled wall portions which provid... | 05/14/1996 |
| 5325084 | Secure area ingress/egress control system The system includes a vestibule and a plurality of emergency exits interconnecting the secure area with the outside environment. The vestibule comprises a pair of security doors and the emergency exits comprise security doors having locking means and mean... | 06/28/1994 |
| 4706685 | Spirometer with double rolling seals A spirometer having double rolling seals, each seal comprising an annular elastomeric membrane folded upon itself and arranged between a piston and a cylindircal casing so that the rounded folds of the two membranes face each other. When the piston is ful... | 11/17/1987 |
| 4565090 | Detection device for detecting and indicating operation of a gas meter In the gas meter comprising a housing made of non-magnetic material and provided with gas inlet and outlet, a driver section provided with a rotating member rotated in accordance to the flow amount of gas, and a meter driven by the driver section to displ... | 01/21/1986 |
| 4091668 | Diaphragm type gas meter In a diaphragm type gas meter, one crank plate pivotally mounting a pair of diaphragm movement transmission levers and the other crank plate pivotally mounting a pair of valve actuating levers overlap each other rockably around the central axis of a crank... | 05/30/1978 |
