US2412728A

US2412728A - Device for producing aerosols

Info

Publication number: US2412728A
Application number: US513400A
Authority: US
Inventors: Lyle D Goodhue
Original assignee: National Aeronautics and Space Administration NASA
Current assignee: National Aeronautics and Space Administration NASA; US Department of Agriculture USDA
Priority date: 1943-12-08
Filing date: 1943-12-08
Publication date: 1946-12-17
Anticipated expiration: 1963-12-17

Description

Dec. 17, 1946.

L. D. GOQDHUE DEVICE FOR PRODUCING AEROSOLS Filed Dec. 8, 1945 LYLE n. codmruE Patented ec. 17, B946 2,412,728 psvros FOR raonucnvc 'AERosoLs Lyle D. Gooclhue, Berwyn, Md., assignor to United States of America as represented by Claude R. Wickard, Secretary of Agriculture, and his successors in office Application December 8, 1943, Serial No. 513,400

(Granted under the act of March 3, 1883, as

4 Claims.

This application is made under the act of March 3, 1883, as amended by the act of April 30, 1928 and the invention herein described and claimed if patented, may be manufactured and used byor for the Government of the United States of America for governmental purposes without the pay ment to me of any royalty thereon.

In United States Patent No. 2321,023, it is disclosed that parasiticidal aerosols can easily and conveniently be prepared by releasing to the atmosphere solutions of certain materials in liquefled gases held under pressure. An object of this invention is to provide an improved device for discharging aerosols.

The device of m invention is illustrated in the accompanying drawing, in which:

Figure l is an elevational view; and

Figure 2 is a section along the line 2-2 of Figure 1.

Referring with more particularity to the drawing, the numeral ll designates the casing of the container formed of two sections l2 and i3, welded together at M, a dip tube l5 extending from the exterior of the container through the top and terminating at a point near the bottom within the container. The liquid l6 within the container comprises a solution of a non-volatile parasiticlde dissolved in a gas under pressure-and may be any of the compositions hereinabove mentioned. The outer end of the dip tube is provided with a seal ll of a material such as a soft metal or an alloy, above which there is secured to the,

casing of the container a small cylindrical shell [8, threaded on the inside. A plug l9, threaded on the outside, is adapted to engage the threads of the cylindrical shell I8. A conical shaped penetrator 20 is secured to the lower end of the plug I!) to contact and break the seal ll when screwed down. Finger grips 2i are provided onthe plug l9 to facilitate this operation. A smallhole or capillary 22 (preferably about 0.020 of an inch in diameter) is disposed longitudinally through the plug H). A short piece of tubing 23 is removably disposed between the bottom of the plug I9 and the tube I5 to prevent accidental puncturing of the seal ll before initial use. When it is desired to use the device, the plug i9 is first taken out and the tubing 23 removed. The plug I9 is then replaced and screwed down until the seal is broken by the penetrator. The plug I9 is then retracted to permit escape of the liquid in the container through the hole 22. When it is desired to shut oil this flow, the plug i9 is again screwed down to seat the penetrator 20 in the opening previously made by it in puncturing the seal I1. With this arrangement, the container may be shipped after being filled with the liquid under seal and. without danger of leakage. Furthermore, when placed in the hands of the user, dispersion of the liquid can be controlled by simply manipulating the plug amended April 30, 1928; 3'10 0. G. 757) l9. Suitable resinous or other anti-leakage materials may be applied to the threads between the cylindrical shell l8 and the plug I9 to make the device operate more eficiently.

Having-thu described my invention, I. claim:

1. In combination, a hermetically sealed container, a dip tube extending from the exterior to the interior of the container, a tubular member about the opening of the dip tube on the outside of and integral with the container, a plug threadedly engageable with said tubular member, a yieldable seal in said dip tube, and a solid. penetrator attached to said plug for rupturing said yieldable seal, said plug having an escape hole longitudinally therethrough, the lower end of said hole being radially ofiset from and non-contactable with that area of said seal which is rupturable by said penetrator.

2. In combination, a hermetically sealed container, a dip tube extending from the exterior to the interior of the container, a tubular member about the opening of the dip tube on the outside of and integral with the container, a plug threade'dly engaged with said tubular member, a yieldable seal in said dip tube, and a solid penetrator attached to said plug for rupturing said yleldable seal and forming a seat therein for said penetrator, said seat and penetrator comprising a valve, said plug having an escape hole longitudisaid Y eldable seal and thereby forming a seat.

therein for said penetrator, said seat and penetrator comprising a valve, said plug having an escape hole longitudinal therethrough, the lower end of said hole being radially offset from and non-contactable with said portion.

4. In combination, a hermetically sealed con-.

tainer, a dip tube extending from the exterior to the interior of the container, a tubular member about the opening of the dip tube on the outside of and integral with the container, a plug threadedly engageable with said tubular member. a yieldable seal in said dip tube, and a solid penetrator attached to said plug for rupturing a portion of said yieldable seal and thereby forming a seat therein for said penetrator, said seat and penetrator comprising a valve, said plug having an escape hole longitudinal therethrough, the lower end of said hole being radially oflfset from and non-contactable with said portion, and a removable spacer between said plug and said seal.

. LYLE D. GOODHUE.