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| Number | Title | Issue Date |
| 7191646 | Positive displacement flow meter A flow meter includes a meter body defining a cavity having opposing ends joined by opposed sides at corners. At least one of the corners is recessed to form a reservoir. A box frame defining a frame interior is received in the cavity for reciprocal movement between... | 03/20/2007 |
| 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 |
| 4684367 | Ambulatory intravenous delivery system An apparatus for ambulatory intravenous delivery of substances to a recipient comprising a container and delivery means for pressurized delivery of the substance. The container communicates with a source of pressurized gas to provide the pressurizing forc... | 08/04/1987 |
| 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 |
| 4281541 | Gas meter with composite iron center casting A positive displacement gas meter includes a two-piece composite center casting. The first piece is a center chamber casting which has a lower cylindrical wall partially defining the center chamber and an upper manifold portion defining passages to front ... | 08/04/1981 |
