US 3,947,659 AGranted

Hair dryer with a vapor ejection means

AssigneeTakashi Tumura

InventorTakamichi Ono

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Abstract

A hair dryer with a vapor ejection means, the vapor ejection means includes a vapor nozzle, a tank adapted to contain liquid therein, an evaporation chamber heated by a heater and a feeder for feeding the liquid from the tank into the evaporation chamber. Formation of hot drops is prevented by longitudinal inner and outer nozzles, each with a separate discharge ends in the vapor nozzle, both with nozzle outer ends. The inner nozzle is longitudinally within the outer nozzle, the discharge end of said inner nozzle being inward from, and separate from the discharge end of the outer nozzle. In both the nozzle discharge ends there are inwardly disposed annular recesses to prevent liquid drops from falling from the outer nozzle outer end.

Claims2

Dependent claims

A hair dryer comprising in combination:

a. a grip handle (25), with an upper section, an elongated upper chamber with middle and rear sections, said rear section being connected to and disposed above said upper section, in a plane substantially normal to said drip handle, a suction opening (13) in said rear section, a dryer chamber (10) in said middle section, a longitudinal main nozzle (12) with an outlet extending frontwards of said dryer chamber (10);
b. air drive means (14, 15) in said rear section disposed to suction air through said suction opening (13) into said dryer chamber (10) and drive the air out of said main nozzle (12), heater means (18) extending longitudinally across said main nozzle;
c. a housing (29) with a front and rear sides;
disposed under said main nozzle, a tank (32) at the rear side of said housing, for holding liquid, a nozzle vapor passage at the front side of said housing under said main nozzle, a connecting aperture (31) between said main nozzle (12) and said nozzle vapor passage, to allow ventilating air to flow into the housing for passage through said housing to a ventilating air outlet provided therein, liquid outlet means (40) in said tank (32), a valve (37) and a spring means (39) biasing the valve in the closed position in said tank, feeder means connected to said valve with a trigger (43) disposed alongside said handle for lifting said valve (37) against the force of the spring (39), a vaporization chamber (65) with a top disposed under said liquid outlet means (40), a heater (46) at the bottom of said chamber (65) and a vapor duct (47) extending from said vaporization chamber (65) to said nozzle vapor passage;
d. inner and outer longitudinal nozzle means (51, 49) in said nozzle vapor passage both with nozzle discharge ends, said outer nozzle means (49) surrounding said inner nozzle means (51) and spaced by a gap from said inner nozzle means, said outer nozzle means nozzle discharge end projecting further than said inner nozzle means (51) nozzle discharge end, said inner nozzle means having an inlet end coupled to said duct (47) said inner nozzle means being within said outer nozzle and longitudinally smaller than said outer nozzle means, the nozzle discharge end of said inner nozzle means being within the outer nozzle means and separated from the nozzle discharge end of the outer nozzle means, inwardly disposed annular flange recesses (53, 54) in both said nozzle discharge ends for preventing liquid drops from falling from said outer nozzle discharge end;
and,
e. switch means (26) and a two position switch (26') on said handle, a first circuit connecting said switch means (26) and said air drive means (14, 15) and a second circuit selectively connecting said switch (26') in one position to said heater means (18) and in a second position to said heater (46).

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A hair dryer comprising in combination:

a. a handle (25), an extended dryer chamber (10) with a middle and rear portion, said rear portion being set upon said handle in a plane substantially normal to said handle, said chamber having a nozzle extending out from said middle portion, said chamber and nozzle defining an upper air passage, air drive means including air suction ports (13), fan means (14) driven by a driver (15) at said rear portion driving air through said upper air passage, heater means (18) in said air passage;
b. a housing (29) with front and rear sides having a vapor nozzle under said upper air passage, at said front side, a tank (32) with upper and lower sections at said rear side, a connecting aperture (31) between said nozzle (12) and said housing to allow ventilating air to flow into the housing to ventilating air passages therein and said housing having a ventilating air outlet through which air flowing through the ventilating air passages is vented to the atmosphere.
c. liquid outlet means (40) in said tank (32) at said lower section thereof, a valve (37) and spring means (39) biasing the valve in the closed position over said outlet means, a feeder rod (68) connected to said valve (37) extending through said tank to said upper section and a spindle (41) connected to said feeder rod at said upper section including a trigger (43) disposed alongside said handle for lifting said valve (37) against the force of the spring (39);
d. a vaporization chamber with a top disposed under said liquid outlet means (40), a heater (46) at the bottom of said vaporization chamber and a vapor duct (47) extending from said vaporization chamber to said vapor nozzle;
e. longitudinal inner and outer nozzle means (51, 49) each with a separate discharge ends in said vapor nozzle with a gap therebetween, both with nozzle outer ends, said inner nozzle means having an inner end coupled to said duct (47), said inner nozzle means being longitudinally within said outer nozzle means, the discharge end of said inner nozzle means being inward from, and separated from the discharge end of the outer nozzle means, and inwardly disposed annular recesses (53, 54) in both said nozzle discharge ends to prevent liquid drops from falling from said outer nozzle means outer end;
and,
f. means for selectively activating the fan means (14), heater means (18), and heater (46).

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Dependencies are inferred from the claim text.

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Abstract

A hair dryer comprising in combination:

a. a grip handle (25), with an upper section, an elongated upper chamber with middle and rear sections, said rear section being connected to and disposed above said upper section, in a plane substantially normal to said drip handle, a suction opening (13) in said rear section, a dryer chamber (10) in said middle section, a longitudinal main nozzle (12) with an outlet extending frontwards of said dryer chamber (10);
b. air drive means (14, 15) in said rear section disposed to suction air through said suction opening (13) into said dryer chamber (10) and drive the air out of said main nozzle (12), heater means (18) extending longitudinally across said main nozzle;
c. a housing (29) with a front and rear sides;
disposed under said main nozzle, a tank (32) at the rear side of said housing, for holding liquid, a nozzle vapor passage at the front side of said housing under said main nozzle, a connecting aperture (31) between said main nozzle (12) and said nozzle vapor passage, to allow ventilating air to flow into the housing for passage through said housing to a ventilating air outlet provided therein, liquid outlet means (40) in said tank (32), a valve (37) and a spring means (39) biasing the valve in the closed position in said tank, feeder means connected to said valve with a trigger (43) disposed alongside said handle for lifting said valve (37) against the force of the spring (39), a vaporization chamber (65) with a top disposed under said liquid outlet means (40), a heater (46) at the bottom of said chamber (65) and a vapor duct (47) extending from said vaporization chamber (65) to said nozzle vapor passage;
d. inner and outer longitudinal nozzle means (51, 49) in said nozzle vapor passage both with nozzle discharge ends, said outer nozzle means (49) surrounding said inner nozzle means (51) and spaced by a gap from said inner nozzle means, said outer nozzle means nozzle discharge end projecting further than said inner nozzle means (51) nozzle discharge end, said inner nozzle means having an inlet end coupled to said duct (47) said inner nozzle means being within said outer nozzle and longitudinally smaller than said outer nozzle means, the nozzle discharge end of said inner nozzle means being within the outer nozzle means and separated from the nozzle discharge end of the outer nozzle means, inwardly disposed annular flange recesses (53, 54) in both said nozzle discharge ends for preventing liquid drops from falling from said outer nozzle discharge end;
and,
e. switch means (26) and a two position switch (26') on said handle, a first circuit connecting said switch means (26) and said air drive means (14, 15) and a second circuit selectively connecting said switch (26') in one position to said heater means (18) and in a second position to said heater (46).

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