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US 5,667,189 AGranted
Self-supporting flow hood
OwnerMichael H. Kesterinventor
Life of this patent
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Abstract
An adjustable, spring-loaded support mast which is affixed to standard flow hoods in order to maintain the hoods in position over ventilation registers and diffusers while air flow measurements and adjustments are made. The mast is adjustable in length to accommodate different ceiling heights and is spring loaded to facilitate the positioning and removal of the flow hood over the diffuser as well as to hold it firmly in place. This allows air flow adjustments to be made much more quickly and efficiently, saving time, expense and manpower.
Claims5
A self-supporting flow hood for measuring air flow through diffusers, registers, and grilles, comprising:
- (a) a flow hood having a plurality of apertures formed therein;
- (b) a mast tube, having an upper end and a lower end;
- (c) a pressure shaft, having an upper end and a lower end, an extended position and a retracted position, said lower end telescopically received within the upper end of said mast tube, and having means for urging said pressure shaft to the extended position;
- and
- (d) a coupling unit, affixed to the upper end of said pressure shaft, and having a plurality of hood support rods pivotally extending therefrom wherein the plurality of support rods are dimensioned to be received in said plurality of apertures in said flow hood.
2 more elements
Dependencies are inferred from the claim text.