US3046673A

US3046673A - Hair dryer

Info

Publication number: US3046673A
Application number: US820415A
Authority: US
Inventors: Nawroth George
Original assignee: Individual
Current assignee: Individual
Priority date: 1959-06-15
Filing date: 1959-06-15
Publication date: 1962-07-31
Anticipated expiration: 1979-07-31

Description

G. NAWROTH `uly 3l, 1962 HAIR DRYER Filed June 1'5. 1959 m T N E V m BY W ATTO@ EYS UnitedStates Patent O Filed June 15, 1959, Sel'. No. 820,415 1 Claim. (Cl. 34-100) This invention relates -to hair dryers.k It is an object of the present invention to provide a hair dryer which is quiet in operation and has good drying capacity. The hair dryers, presently in use, usually have the shape of a helmet closed at the top and open at the bottom forming a drying chamber into which the upper head portion of Ia person using the helmet lits, the drying being accomplished byimeans of a stream of heated air blown with considerable velocity over the hair.

One of the objections to such a construction is the noise which is created by the vfan and air. Such noise is extremely objectionable to the person having her hair dried not only because of the length of time such noise has to be endured by precludes the possibility of conversation or gossip during that period. -Ilt must `also be borne in mind that, in hair `dressing establishments, it is usual for several of such dryers to be operated at the same time which adds considerablyv to the noise level.

It is therefore one of the objects of the present invention'to provide a hair dryer which is very quiet in operation andA thus removes the foregoing objection.

A further objection of the invention is to increase lthe eiciency of the drying so that the same can be accomplished in a shorter period than heretofore. g

These and other objects are accomplished by the apparatus described in the following specification and illustrated in the accompanying drawings in which:

FIGURE l is a cut away perspective view of a dryer exemplifying the invention;

FIGURE 2 is a diagrammatic view to show the air circulation; and

FIGURE 3 is a fragmentary perspective view of the divider in the upper end of the helmet.

The hair dryer illustrated in the drawings comprises a dryer helmet having an open bottom end and closed at the top end except for a plurality of air inlets 11 which are arranged in the top end and in the side Walls of the helmet adjacent the top; a perforate shell 12, having an open bottom end, positioned within said helmet and forming a hair drying chamber accessible through said open bottom end thereof into which the upper head portion of the person using the dryer helmet fits; the lower end of the shell 12 being bent outwardly to form an annular flange 13 which is secured to the inner wall of the helmet adjacent the open end of the same; a partition 14 secured insidethe shell spaced below the top end thereof forming a fan chamber 15 in the upper portion of lthe shell and a divider 16 mounted in the upper end of the helmet between the top end thereof and the top end of the shell.

The flange 13 on the lower end of the shell -12 spaces the shell from the helmet to form an air heating chamber 17 in which is mounted an electric heating coil 18.

The ange 13 is provided with a series of openings 19 through which air circulates as hereinafter described. 'Ihe lower end of the helmet is formed with an annular yarcuate inturned flange Z0 for directing part of the air upwardly as hereinafter described. The partition 14 is Aformed with a centrally provisioned port 21 and in alignment therewith the shell is formed with a port 22. in the upper end thereof.

The divider 16 co-operates with the top end of the helmet to form an inlet chamber 23. Formed centrally in the divider 16 is a central opening 24 and along its outer edge is formed a series of ports 25. Slidably sup- 3,046,073 Patented July 31 1962 ICC ported on the `divider 16 is |an annular plate 26 which is formed with -a series of ports 27 and an operating handle 28 which projects through a slotted opening 29 formed in the shell. The ports 27 are arranged so that-they can be moved into and out of register with the ports 25 in the divider thereby providing a means to regulate the amount of air owing into the air heating chamber 17.

The divider 16 serves as a support for an electric motor 30 having a triangular shaped mounting plate 31 which is fastened in any suitable manner to the divider 16./

The motor 30 is provided with a long shaft 32 which extends downwardly into the fan chamber 15. Mounted on the shaft 32 within the air heating chamber 17 is a low velocity fan 33 which is constructed so as to blow air downwardly through the chamber 17 and into the air drying chamber formed by the perforate shell 12,. Mounted on the shaft 32 within the fan chamber 15 is a fan 34 which is constructed'so yas to suck air from the drying chamber and force it into the air heating chamber for re-circulation.

In Aorder that the shell may be mounted on a suitable stand, it is provided with a mounting breacket 35, which may be of the usual construction.

The dryer operates in the yfollowing manner. The person having his or her hair dried places the upper head portion in the hair drying chamber. The dryer is switched on which heatsl the heating coil 18 and starts the fan. Air is circulated downwardly, as indicated by the arrows, through the perforations in the shell into the hair drying chamber and downwardly through the ports 19' to be deflected upwardly by the dellector 20. Of course, part of the `air will escape through the space between the persons head and the shell into atmosphere so that a portion of fresh air is continually introduced into the helmet through the inlets 11. The air then travels upwardly being drawn into the fan chamber by ithe fan 34 out through the port 22 and back into the air heating chamber 17 to be re-circulated.

What I claim as new and desire to protect by Letters Patent of the United States is:

A hair dryer having-in combination a hair drying chamber having a perforate side wall and a` dome shaped top formed with 'an air outlet, a casing surrounding said drying chamber and spaced therefrom to form an air heating chamber between adjacent walls of the heating chamber and the drying chamber, a partition in the upper portion of the casing, said partition having a central opening coaxial with said air outlet andvalve control means havingpassages communicating with theY air heating chamber, a ported baiile connecting the lower ends of the perforate side wall to the inner wall of the air heating chamber, a centrally apertured horizontally disposed partition in the upper portion of said hair drying chamber to provide a fan chamber-in the upper portion of the hair drying chamber, a low velocity upwardly act- -ing suction fan mounted within the -fan chamber, ya rlow velocity downwardly acting blowing fan `mounted in the `r air heating chamber, an electric heater mounted in the air heating chamber adjacent the yfan chamber, and a motor in the top portion of said casing and yhaving a vertically and downwardly extending drive shaft on which said `fans are coaxially mounted.

References Cited in the file of this patent