Abstract: A wireless tank monitoring system for remotely monitoring a plurality of storage tanks is provided. This tank monitoring system utilizes wireless communication from individual tank level monitors to a single SatComm Gateway. The SatComm Gateway then utilizes a low-Earth Orbit satellite constellation to transmit information to a central data collection center. The data collection center then provides access to this information to clients. These clients also have the capability of controlling individual monitors via the bi-directional communications path through the satellite link to the SatComm Gateway to the individual monitors. The SatComm Gateway packages the information from each of the monitors to optimize the communications through the satellite link to decrease the cost of transmission. Intrinsic safety is provided by each of the individual tank level monitors.

Abstract: A fuel vapor recovery system wherein the physical installation and removal of the sealant member or gas cap is the activator of the system. The present invention offers a valve assembly which is mounted in the fuel filler tube and is positionally responsive to the presence or removal of the closure member assembly. The valve assembly of the present invention is disposed in combination with a vapor vent line leading to a fuel vapor canister. Broadly stated, the valve assembly includes first and second annular seals disposed on opposite sides of the vent port. The first seal blocks or prevents communication between the atmosphere and the fuel tank interior when the gas cap is removed. The second seal permits communication between the vapor vent and the fuel tank interior when the gas cap is removed from the open ended filler tube and blocks communication between the fuel tank's interior and the vent port when the cap assembly is reinstalled.

Abstract: The invention teaches the use of a cam-operated valve control means, which cam is moved by an electrical motor in response to an operating signal. Such valve control means finds particular application in an exhaust gas recirculation system or idle speed control for an automobile engine.

Abstract: A differential pressure sensor assembly is disclosed, which includes a transducer and a differential pressure sensor. The sensor responds to a fluid pressure change across an orifice of a known size and transfers this sensed pressure differential to the transducer. The electronic elements of the transducer are not exposed to the fluid which may be at an elevated temperature or have entrained particulates. The fluid flow can be determined by noting the fluid pressure change across the orifice of known size.

Abstract: A locking and securing means is disclosed which includes a base member, a threaded member and a sprocket. The base member defines vertically extending fingers with gaps therebetween and a threaded bore. The threaded member with a flat or irregular shape on its upper leg segment extends through this bore to a desired position. The sprocket, which is mounted on the threaded member prior to insertion into the bore, has radially extending teeth to mesh with the base-member-defined gaps and an internal shape to mate with the threaded-member shape. The threaded member is thus secured to a fixed height or position.

Abstract: A test system for rapid and accurate testing of valves, especially delay valves for automotive applications, includes both an apparatus and test method. This test apparatus utilizes a reference pressure to avoid calculating a barometric adjustment to a measured flow rate through such delay valves.

Abstract: A thermally actuated valve includes a snap action bimetal valving member enclosed in a cartridge which is inserted in a hollow fitting arranged for contact with a heated medium such as the coolant of an internal combustion engine.