Fluid reaction surfaces (i.e. – impellers) – With control means responsive to non-cyclic condition... – Plural diverse condition responsive
Patent
1991-10-25
1993-02-16
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
With control means responsive to non-cyclic condition...
Plural diverse condition responsive
416 61, 416147, 416157R, 416 36, F01D 700
Patent
active
051866080
ABSTRACT:
A low pitch alarm assembly 70 comprises a capped sleeve 72 disposed about the distal end 55 of the rotating and translating fluid delivery tube 50 so as to define a chamber 75 receiving the end 55 of the fluid delivery tube for axial translation therein, a fluid supply conduit 80, a pressure drop orifice 82 disposed in the fluid supply conduit 80, and a pressure switch 90 opening to the supply conduit downstream of the pressure drop orifice. The sleeve 72 has relatively large flow area outlet holes 74 opening through the capped end 76 of the sleeve 72 to a low pressure and a relatively small flow area inlet opening 73 through the sleeve side wall 78 connected to the fluid supply conduit 80. The pressure switch 90 generates an alarm signal whenever the end 55 of the fluid delivery tube 50 passes out of registration with inlet opening 73.
REFERENCES:
patent: 3589830 (1971-06-01), Mogren et al.
patent: 3820917 (1974-06-01), Rakcevic
patent: 3873235 (1975-03-01), Mendelson
patent: 4348156 (1982-09-01), Andrews
patent: 4523891 (1985-06-01), Schwartz et al.
Look Edward K.
Sgantzos Mark
United Technologies Corporation
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