Drying and gas or vapor contact with solids – Apparatus – For hair on head
Patent
1994-07-11
1995-11-21
Gromada, Denise L.
Drying and gas or vapor contact with solids
Apparatus
For hair on head
392385, 392380, 34283, A45D 2000
Patent
active
054675405
ABSTRACT:
A diffuser to diffuse the air blast of a hair dryer may be embodied as a removable accessory for existing hair dryers or an integral feature in a hair dryer. A tubular member includes a first end to receive the output of the hair dryer, and a diffuser plate is pivotally secured in the opposed, second end of the tubular member. The diffuser plate is rotatable from a fully open position in which the entire output of the dryer blower is delivered from the second end, to a fully closed position in which the second end is blocked by the diffuser plate. The diffuser plate includes a plurality of holes in a spaced array, permitting a fraction of the dryer output to be delivered from the second end of the tubular member at a reduced velocity. The tubular member includes a plurality of vent holes disposed upstream of the diffuser plate to exhaust a substantial portion of the air flow when the diffuser plate is closed to the attenuating position. The diffuser plate is mounted on a pivot shaft, in the fashion of a choke valve, and an actuating lever translates a link joined to a lug on the end of the pivot shaft. Alternatively, a gear is secured to the end of the pivot shaft, and an actuating slide engages the gear in rack and pinion fashion to rotates the shaft and diffusion plate from the fully open to fully closed position.
REFERENCES:
patent: 4097722 (1978-06-01), Soler et al.
patent: 4218608 (1980-08-01), Maroney
patent: 4316077 (1982-02-01), Carlson
patent: 5054211 (1991-10-01), Shulman
patent: 5235759 (1993-08-01), Rizzuto, Jr.
patent: 5303483 (1994-04-01), Chan
Gromada Denise L.
Zimmerman Harris
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