US2980344A - Aspirator means - Google Patents

Description

April 18, 1961 P. B. MARASCO 2,980,344

ASPIRATOR MEANS Filed Aug. 26, 1958 3 Sheets-Sheet 1 2Q INVENTOR.

"'PAQ L. E .MAQASCO April 18, 1961 P. B. MARASCO 2,980,344

ASPIRATOR MEANS Filed Aug. 26, 1958 3 Sheets-Sheet 2 4 INVENTOR.

PAUL. B.MA\2ASCO ATTOZH 5Y5 States ASPIRATOR MEANS Paul B. Marasco, 607 Larkspur Laue, Rte. 5, Grand Junction, Colo.

This invention relates to devices for generating sprays, fogs, or vapors, and more specifically, this invention pertains to a device of the aspirator class.

One of the primary objects of this invention is to provide an aspirator with a pulsating pump or compressor.

Another object of this invention is to provide a fog nebulizing vaporizer for the prophylaxis and treatment of colds, croups, respiratory infections, as well as to pro vide means for treating chronic asthmatics and other chronic pulmonary diseases.

A further object of this invention is to provide a vaporizer or atomizer having relatively few movable parts.

, This invention contemplates, as a still further object thereof, the provision of an atomizer which is noncomplex in construction and assembly, inexpensive to manufacture, and durable in use.

Other and further objects and advantages of the instant invention will become more evident from a consideration of thepfollowing specification when read in conjunction with the annexed drawings, in which:

Figure 1 is a side elevational view of an atomizer con structed in accordance with this invention;

Figure 2 is a top plan view of the device illustrated in Figure l;

.Figure 3 is a detail cross sectional view, partly inelevation, Figure 3 being taken substantially on line 3-3 of Figure 2, looking in the direction of the arrows;

Figure 4 is a detail cross sectional view of the pump or compressor unit together with its driving means, Figure 4 being taken substantially on the vertical plane of line 4-4 of Figure 3, looking inthe direction of the arrows;

Figure 5 is an enlarged detail cross sectional view of the compressor head and illustrating the arrangement of the air inlet and outlet chambers, the control valves, and the air inlet and outlet means, Figure 5 being taken substantially on the horizontal plane of line- 5-5 of Figure 4, looking in the direction of the arrows; v

Figure 6 is an end elevational view of the driving means and illustrating the eccentric driving means'for the piston rod, Figure 6 being taken substantially on the vertical plane of line 66 of Figure 4, looking in the direction of the arrows;

Figure 7 is an enlarged detail fragmentary cross sectional view of the atomizing elements; and

Figure 8 illustrates a modified atomizer container.

Referring now more specifically to the drawings, reference numeral 19 designates, in general, a nebulizing or atomizer device or unit constructed in accordance with the teachings of this invention. The device 10 is seen to include a base plate 12 supported on suitable legs 14. Fixedly secured to the base .plate 12 by screws 16 is a conventional electric motor 18 adapted to be connected in an electric circuit through leads Zti, the circuit to the motor being controlled by an electrical toggle switch 22 fixedly mounted on, the base plate 12 (see Figures l and 72'). The motor 13 is provided with spacedinner and outer casings 24, 26, a front end wall 23. and an.

Patented Apr. 1a, 1961 oppositely disposed open spider 30 at its other end. The forward end of the drive shaft 32 projects beyond the end wall 28 and is journaled for rotation therein and in the spider 30, and to its other end is connected a plurality of fan blades 34 to effect circulation of air between its inner and outer casings in order to maintain the operating temperature of the motor at a minimum.

The forward end of the drive shaft 32 extends through an opening 36 formed in an end wall 38 of a substantially hollow noise silencing and guard housing 40. The housing 40 serves to reduce operational noises and to guard against personal injuries by contact by the user with the moving parts of an air compressor or pump 42. The housing 40 is rigidly connected to the end wall 28 by means of a pair of bolts 44 which project through and are connected with a pair of flanges 46, 48 extending laterally from the housing side walls 50, 52, respectively. The other end wall 54 is formed with a plurality of heat dissipating fins 56. g

The end wall 38 has an upper extension 58 apertured at 60 which is superposed over the upper end of the housing 59 and a flexible diaphragm 62 extends across the aperture 69 and seats on the marginal edgethereof. Engaging against the lower side of the diaphragm 62 is a piston head 64 and super-posed thereover is'a backing plate 66. The piston head 64 and backing plate 66 are connected to the diaphragm 62 by a countersunk screw 68. Depending from the piston head 64 is a piston connecting rod 70 having bifurcated arms 72, 74 which, at their inner ends are formed with semicircular recesses to receive a sealed oiless learing 76. The bearing 76 jour nals a crank pin 78 projecting eccentrically from the end wall 80 of a cylindrical sleeve 82 mounted on the drive shaft 32 for rotation therewith; A set screw 83 maintains this relationship.

7 Reference numeral 84 denotes an air pump or coinpressor head having integrally formed laterally projecting heat dissipating fins 86 extending from a side thereof. The oppositely disposed side isformed" with. a .pair of inwardly opening inlet and outlet chambers 88, 90 separated from each other by a rib 92. The inlet chamber connectswith theiambient atmosphere through. aibore 92 and a fitting 94 having an air filter 96 at the inlet end thereof e The airoutlet chamber 90 is connected to, a bore, 98 with a fitting 100 to which is connected one end of an air discharge, nozzle 102, the latter being connected to one end of a hollow conduit 104.

Reference numeral 1% denotes an inner cha'rnbet closure plate which extends across both the air inlet and outlet chambers 88, 90, respectively,f:aud,is secured to the rib 92 by means of a set screw 108. Reference nuineral connotes a sealing gasket interposed between the plate 106 and the head 84. z

The plate 106 isformed witha pair. of air, inlet and outlet ports 112, ,114 communicating,respectively, with the air inletand outlet, chambers, 88; 96,- and; to the,

underside of the plate 106 is hingedly connected at 116 a flap valve 118 which extends across the air inlet port 112. A similar fiap valve 120 is hingedly connected at 122 to the upper side of the plate 156 and extends across the air outlet port 114.

As is clearly seen in Figure 4, the head 84 is formed with a circular flange 121 which engages over the margin-:

al edge of the upper side of the diaphragm 62 and bolts 122 serve to clamp the same between the flange 121 and the upper side of the extension 58 to efiect an airtight seal therebetween and to create an air compression or pumping chamber 124. I i

From the foregoing description it should be now manifest that upon energization .ofthe motor 18 the drive shaft 32is rotated which, in turn, due to the crank con 1 102 into an aspirator ends.

, 3 r r nection between the pin 78 and the connecting rod 70, causes the piston'to reciprocate and flex the diaphragm 62. On the' down-stroke of the piston 64, a partial vacuum is created in the compression chamber 124 which causes thef'inet valve to open away fromthe inlet port 112 and to close the outlet valve 121-against-the outlet po'rt'114. Thus, air is admitted to'the air inlet chamflector 154 and becoming entrained in the air stream in the formof very small particles. The atomized fluid then passes through the discharge spout 170 to the point at which the same is to be used.

Figure 8 illustrates a second'embodiment of this invention which is adapted for use when special medicaber 88 and passes intothe air compression chamber 124.

The piston 64, on its upper compression stroke compresses the air in the chamber between the diaphragm 62 and the plate 106 and in so acting, the air pressure closes the inlet'valve 118 and forces open the outlet valve 121 whereby compressed air is admitted into the air'outlet chamber 90. This compressed air is -thenavail- I able for discharge through the fitting and conduit designated, in general,'by reference numeral 126. l

The aspirator 126 includes a substantially hollow cyl in 7 closed ends. The upper open end of the container 128 is provided with an external thread 1 30 to threadedly receive a'circular cap 132 having a central opening '134 formed therein giving rise to an annular flange 134.

i drical container 128 having a pair of opposedopen and i T Reference numeral 136 denotesa hollow cylindrical neck having an'outwardly extending radial flange 138 at one 7 endthereof, the outer marginal edge of the latter being c'lamped'between the flange 134 and the upper end of the container 128 with the neck 136 projecting upwardly 1 through the aperture l33. .The neck 136 is constructed with a laterally projecting, externally'threaded boss 140 through which extends a substantially hollow tubular aspiratonmember 142 having a pair of opposed open One end of the member 142-is provided with a radial abutment flange 144 to limit'the extension .of the meniber142 into the'neck 136, and the other end thereof is connected with one end of a pipe 146, theother end offthe latter being disposed proximate to, but spaced from, the closed-end 148 of the container 128. i p

The aspirator member 142 has an upwardly opening orifice 150'formed therein, the orifice being substantially in 'coaxialalignment with the neck 136 and having a countersunk underside 152'disposed in coaxial alignment with, but' spaced from a deflector 154.

i One end of a fitting 156 is received in the flanged end 1440f the aspirator member 142, and the fitting is pro- 4 vided Witha radial flange 158. The fitting 156 extends throughanaperture 160 formed in the cap 162 on the to the fitting 156 to deliver air'under pressure to the aspirator member ,142. r r f The upper end of the neck 136 is apertured at'164 and terminates in an outwardly ofiset peripheral flange166 .forming an anchor. for a snap-over flange 168 of an V elongated fog; vapor orsteam discharge spout170 formed of a'flexible material.

' In operation; pulsating compressed air is'delivered'to tions are required. As is illustrated therein, this embodiment of the invention discloses that an inverted substantially hollow conical medical container 200 is disposed within the container 128 the medical container 200 having an open base end provided with an outwardly turned radial flange 202 which is adapted to be supported on the upper terminal end of the container 128. In all other respects this embodiment of the invention is identical to the first.

The container'128, if desired, may be removably supported on the plate 12 within a vertically extending cylindrical side wall 204. i

' Having described and illustrated the present inventions in detail, itwill be'understoodthat the same areoflered merely by way' of example, and that the inventions shall ,be limited only by the scope of the appended'claim.

What is claimed isz. p V 7 e A power driven atomizer pcomprising. an 'air com- ..pressor, a liquid container having opposed open and closed ends, a centrally-apertured cap extending across said open end of said container, a flange clamped between said cap and the adjacent end of 'said container, said flange having a neck portion projecting .through said apertured cap and in communication with the interior. of said container, liquid aspirating means carried on said neck p'ortionand means for connecting said air compressorwith said aspirating means, saidaspirating means boss 140, the other. end of the conduit 104 is connected thelaspirator 142 and-strikes against the deflector 'boss 7 154 for deflection upwardly into and through the orifice 150. This air stream creates a vacuum in'the pipe 146' causing fluid disposed within the container 128 to be drawn upwardly therethrough, the. the de- I comprising an elongated open ended hollow tubular substantially cylindrical element having an orifice extending traansversely therethrough adjacent one end thereof, a deflector disposed within said hollow tubular member coaxially aligned with, said'orifice, said cylindricalele- 4'0 ment having its opposed ends terminating externally and internally of said neck,'said connecting means beingconnected with the external endof said tubular member, and a pipe having one of its ends connected, to the other end of said tubular member, the other end of said pipe terminating adjacent to but spaced from said closed end of said container.- T I References Cited in the file of'thi s patent UNITED STATES PATENTS

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