Combined flow measuring and valve leakage indicator
Pressure responsive safety system for fluid lines
Hose assembly & clip therefor
Device for protection against an excess pressure
Hydraulic safety hose with fluid removal conduit
Multiaxial fuel transfer pipe system
Pipe casting machine having improved pipe mold stabling rings
Gasoline containment systems with leak-resistant plastic fittings
ApplicationNo. 050138 filed on 03/30/1998
US Classes:137/312, WITH LEAKAGE OR DRIP COLLECTING137/557, Fluid pressure responsive indicator, recorder or alarm138/109, With end structure138/113, Surrounding radially spaced duct with axially spaced supports for internal duct138/115, Longitudinally extending common wall340/605, Leakage340/626Pressure
ExaminersPrimary: Ferensic, Denise L.
Assistant: Kim, Joanne Y.
International ClassesF16K 023/00
AbstractThe instant invention consists of an inner cannula of hosing amenable to transport of a liquid coupled with an outer cannula of hosing amenable to transport of a gas. As respects one embodiment, affixed to outer walling of the inner cannula and to inner walling of the outer cannula are rigid struts, typically three or four, at 120° or right angles with respect to one another at various points along the respective lengths of the cannulae that serve to maintain separation of the cannulae from one another at times when the inner cannula is filled with a liquid and the outer cannula is filled with a gas under pressure. A second embodiment is strut free. Each cannula has an ingress end whereat a liquid is introduced into the inner cannula and whereat a gas is introduced into the outer cannula. Each cannula likewise has an egress end whereat the liquid is expelled typically from a nozzle thereat located and the gas is amenable to discharge via the opening of a valve component of the instant invention likewise thereat located. Moreover, the instant invention is characterized by the presence of alarm modalities serving to alert a user thereof to the fact of an unanticipated rise or drop in intercannular gas pressure.
Field of SearchWith end structure
Surrounding radially spaced duct with axially spaced supports for internal duct
Longitudinally extending common wall
With spacer and encircling element
With indicating means
For concentric tubes or pipes (e.g., well casing or wellhead type)
Collector associated with receiver support
Fluid pressure responsive indicator, recorder or alarm
WITH INDICATOR, REGISTER, RECORDER, ALARM OR INSPECTION MEANS
WITH LEAKAGE OR DRIP COLLECTING