Pipes and tubular conduits – Combined – With end structure
Reexamination Certificate
2011-08-02
2011-08-02
Brinson, Patrick F (Department: 3754)
Pipes and tubular conduits
Combined
With end structure
C138S114000, C138S104000, C137S312000
Reexamination Certificate
active
07987874
ABSTRACT:
Hose system for use in an hydraulic system, includes a working hose for the transfer of hydraulic fluid having a pressure substantially higher than atmospheric pressure, and a safety hose surrounding the working hose, the working hose and the safety hose being tightly joined. A pressure transmitter is arranged for indicating a rise in pressure in a space between the two hoses. The system includes at least one bushing for releasable connection to the working hose and the safety hose. The cross-section of the safety hose allows space for the passing of the end couplings of the working hose. The bushing includes a space communicating with the space between the working hose and the safety hose, the space being in communication with a pressure transmitter able to signal an increase in pressure in the space between the working hose and the safety hose.
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Brinson Patrick F
Dennison, Schultz & MacDonald
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