Air curtain-projecting ventilator
OwnerRaul Guibertinventor
Life of this patent
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Abstract
A ventilator adapted to project a uniform air curtain of high velocity and of high pressure. The ventilator is in the form of an elongated air pump in which a rotor shaft is mounted eccentrically within an open coil helix lining the tubular casing of a stator assembly having parallel intake and outlet slots extending the full length of the casing. The shaft is provided with centrifugal vanes which are caused by centrifugal force to engage the convolution of the helix and to slide therealong, whereby the helix functions to engage the vanes without interfering with the flow of air into the pump and its ejection through the outlet.
Claims11
An air curtain-projecting ventilator formed by an elongated air pump comprising:
- A. a stator assembly formed by a tubular casing having a relatively broad intake slot an a narrower outlet slot in parallel relation thereto, the slots extending longitudinally the full length of the casing, and an open-coil helix lining the casing, the convolutions of the helix bridging the slots to define grids thereacross which in no way interfere with the flow of air through the slots;
- B. a rotor shaft mounted eccentrically within the helix and extending the length thereof, said shaft being driven at high speed;
- and
- C. a set of extensible vanes supported on said shaft, said vanes when extended by centrifugal force being caused to engage the convolutions of said helix and to slide therealong in an uninterrupted circular path whereby the helix functions to encage the vanes within the casing without interfering with the incoming flow of air through said intake slot and its ejection through said outlet slot to produce a high velocity air curtain.
Dependencies are inferred from the claim text.