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| Number | Title | Issue Date |
| 7314237 | Pipe joint assembly A pipe joint assembly including a transparent quill; an outer quill having at least a first view port, and having at least a first outwardly extending pipe coupling thread which extends longitudinally along and helically about the outer quill, the transparent quill ... | 01/01/2008 |
| 7285147 | Air supply systems and pressure adjustment devices for use therewith An air supply system for a clean room with a critical machine. An intake duct connects the exterior of the clean room to a make-up air unit, and is configured to transport external air into the make-up air unit. A first air duct connects the make-up air unit to an a... | 10/23/2007 |
| 7101661 | Apparatus for active programmable matrix devices A system for performing molecular biological diagnosis, analysis and multistep and multiplex reactions utilizes a selfaddressable, selfassembling microelectronic system for actively carrying out controlled reactions in microscopic formats. Preferably, a fluidic syst... | 09/05/2006 |
| 5343826 | Fluid indicator assemblies for sight flow apparatus A sight flow apparatus includes a body designed to be connected in-line to fluid pipes within a manufacturing plant or other facility. One or more window assemblies are removably mounted on the sides or ends of the body to allow visual inspection of fluid... | 09/06/1994 |
| 4822501 | Use of lignin/amine/surfactant blends in enhanced oil recovery A method for the enhanced recovery of oil comprised of injecting into an oil containing formation an aqueous surfactant system comprised of a blend of an oil soluble amine, a lignin selected from the group consisting of lignosulfonates and sulfonated alka... | 04/18/1989 |
| 4700742 | Automatic shut-off device An automatic shut-off device for interrupting flow to a remote system in response to a flow fault associated with the remote system. The device generally includes a flow detection assembly, which senses the fluid flow through the remote system, and a faul... | 10/20/1987 |
| 4596442 | Fiberoptic flow indicator system A flow indicator switch system comprising a body having a cavity therein, a first magnetic member pivotally connected to the body and extending into the cavity, a second magnetic member pivotally connected to the body, and a fiberoptic connector arranged ... | 06/24/1986 |
| 4495823 | Bidirectional flow meter A bidirectional fluid flow indicator comprising a housing having a fluid inlet and fluid outlet, first and second separated fluid passageways intermediate said inlet and said outlet, a vane pivotally secured across one of said first channel, a second vane... | 01/29/1985 |
| 4484536 | Apparatus for indicating fluid flow A flow indicator has a pivoting flap fitted in ducting of a hydraulic installation which transports contaminated liquids. To permit the purge of a reservoir, the flap has an opening for air returning through the ducting. The opening prevents overpressure ... | 11/27/1984 |
| 4346607 | Fluid flow meter with improved sealing means A flow meter is provided having a housing with inlet and outlet ports respectively adapted to be connected with a source of fluid pressure and a fluid user. A semicircular vane member mounted within the housing is movable in response to a change in the fl... | 08/31/1982 |
| 4295134 | Liquid flow detecting device A liquid flow detecting device incorporates a static member arranged to be fixed within a passage through which flow of an operating liquid is to take place and an active member held captive by the static member but free to move relatively to the static m... | 10/13/1981 |
| 4197809 | Flow responsive device A flow responsive device for use in a fluid flow system to establish a signal when a predetermined flow rate is attained within a flow conduit. The device is adapted for connection to a flow conduit and has a target vane adapted for insertion within the f... | 04/15/1980 |
