US2921711A

US2921711A - Pressure applicator

Info

Publication number: US2921711A
Application number: US380213A
Authority: US
Inventors: Mack William
Original assignee: FRANK E WOLCOTT
Current assignee: FRANK E WOLCOTT
Priority date: 1953-09-15
Filing date: 1953-09-15
Publication date: 1960-01-19
Anticipated expiration: 1977-01-19

Description

PRESSURE APPLICATOR Filed Sept. 15, 1953 Wl l JV IN VEN TOR. WML/nn /Y/ic'fr HTTORNEX United States Patent O PRESSURE APPLICATOR William Mack, Pittsburgh, Pa., assignor, by mesne assignments, to Frank E. Wolcott, West Hartford, Conn.

Application September 15, 1953, Serial No. 380,213

3 Claims. (Cl. 222-5) This invention relates to a pressure applicator and more particularly to a device for applying pressure to containers, such as bottles, cans and the like, for causing the material contained therein to be forced through a suitable dispensing nozzle.

It is an object of this invention to provide such a device whereby a suitable pressure bulb of a conventional type may be readily connected to Va material container so as to transfer the pressure from the bulb into the container and thereby cause the material 'to be forced out through the nozzle.

A further object of the present invention is the provision of such a device which may be substituted for the regular conventional closure cap of the container and which can remain on the container until all the material has been dispensed therefrom.

A still further object of this invention is the provision of a pressure applicator which will transfer pressure from a pressure bulb into the container only as needed and which will prevent leakage of the pressure from the bulb while not being used.

A still further object of this invention is to provide such a device which is easy to use, economical to produce and adapted for use with conventional type of pressure bulbs containing such commonly known highly compressible mediums as CO2, nitrous oxide, or Freon.

Further objects and advantages of this invention will be more clearly understood from the following description and from the accompanying drawings in which:

Fig. l is a plan view of a pressure applicator embodying the present invention.

Fig. 2 is a side view of said applicator partly in central Vertical section.

Fig. 3 is an enlarged plan view on line 3 3 of Fig. 2 but showing only the central portion of the said applicator.

Fig. 4 is an enlarged side view in central vertical section showing the valve portion of said applicator with a pressure bulb connected thereto and the valve in closed position.

Fig. 5 is a similar view illustrating the operation of piercing the pressure bulb.

Fig. 6 is a similar view showing the valve in open position.

Fig. 7 is a side View in central vertical section showing a modified form of valve, the same being shown in closed position.

As illustrated in the drawings, my improved pressure applicator is preferably in the form of a device which includes a base 5, that is similar to a cap such as commonly used as a closure for conventional containers, indicated at 6, which are generally in the form of bottles, cans and the like, and which are usually provided with a screw thread at the neck portion thereof.

The base 5 is provided with a screw thread 7 that is adapted to engage the thread of the container, and a sealingwasher 8 of a suitable sealing material, such as rubber or the like, is also provided for engaging the end of the container adjacent the said thread to thereby provide a leak-proof seal between the said base 5 and the container.

in the form of the invention illustrated, the base 5 has a central integral portion 9 which extends upwardly and downwardly from the top wall 10 of the base 5. rThis central portion has a recess 11 which is divided into a relive-containing lower portion 12 and a bulb-containing upper portion 13.

The said lower portion of the recess has a bottom 14 with an axial opening therein which receives the valve unit used in the said device.

The said valve unit includes a stationary member 15 having a shank 16 with a reduced portion 17 which forms an annular shoulder 18 and is adapted to fit into and extend through the said opening in the bottom 14 of the recess 11; the said shank having an axial recess forming a passage 19 therein and a hole 20 which cornmunicates with said passage and extends outwardly therefrom through the wall of the shank 16 and opens at the outer peripheral surface of the said shank.

The member 15 also has an enlarged portion forming an annular flange 21 thereon and a reduced portion forming a spear 22 which has a piercing point 23 at its upper end for the purpose to be hereinafter described.

The valve portion of the said device also includes a movable member 24 which is vertically slidable upon the shank of the member 15. Said member has an intermediate axial opening 25 which communicates with a threaded recess 26 at the upper end of the said movable member and with an enlarged inverted recess 27 adjacent the lower end of the said movable member. At th bottom of the said recess 26 there is formed an annular shoulder 28 which provides a seat for a sealing washer 29.`

The bottom portion of the said movable member is Vprovided with an annular valve shoulder 30 which surrounds the recess 27 and forms a seat for an annular valve washer 31 which is secured upon sa'id annular shoulder by means of an annular skirt 32 that depends from the said stationary member around the shoulder 39 and is turned inwardly against the washer 31 to secure it to the said annular shoulder. The movable member 24 is slidable upon the stationary member 15 with the spear portion 22 of the said stationary member extending into the opening 25 and the flange 21 fitting within the recess 27. The said spear portion is preferably flattened at its sides to provide a passage clearance between it and the wall of the opening 25 and the ilange 21 is provided with grooves 33 to provide passages between it and the inner wail of the recess 27. A spring 34 is provided between shoulder 21 on stationary member 15, and bottom 27a of inverted recess 27 so as to urge the movable member upwardly upon the stationary member.

The movable member 24 is also provided with lateral projections 35-35 which slidably t in vertical grooves 36-36 in the inner wall of therecess portion 12.

The said device has an outlet tube 37 which is preferably embedded in the base 5 and communicates with a recess 38 into which there is tted a suitable nozzle 39 having a spray orice 40. The said tube is of a sufcient length to extend into the material within the container.

The pressure bulb used in connection with my above described device, preferably includes a hollow body 41 that may be easily pierced by the point 23 of the spear portion 22.

Y' annularV valve shoulder 3i), and the skirt 32 is bent inwardly over the said valve washer to retain it snugly Yagainst the outer surface of the shankV 16 and thereby prevent leakage between the said Washer and shank.

The reduced portion 17 of the shank is then inserted through the axial hole in the bottom 14 and the endY of the said reduced portion, which projects below the said bottom, is spun outwardly against the outer surface of the bottom to thereby firmly secure the stationary member to the base 5.

As shown in the drawings, when the said stationary and movable members are thus assembled, the movable member will be slidable Within the recess portion 12 and upon the stationary member 15, and will be forced upwardly by the spring 34 so thatY the valve Washer 31 is normally in sealing position over the hole 20 and against the annular shoulder that is provided around the bottom device is secured to the container by threading the base upon the regular thread of the container until the sealing washer 29 tightly engages the top of the container. The tube 37 will then project downwardly into the material in the container.

A pressure kbulb is then threaded into the recess 26 to the position shown in Fig. 4 in which position'it will be held by the spring 34 until it is desired to apply pressure into the container 6. When it is so desired, the 40 container is held in the hand and the bulb is pressed downwardly with the thumb of the same hand. This will cause downward movement of the movable member 24 to the position shown in Fig. 5 and, within such movement, the sealing washer 29 will uncover the hole 20 and the point 23 will punctureV the wall 44 so that the pressure withinrthe pressure bulb may bedischarged. The movable member is then allowed to move upwardly for a short distance to the position shown in Fig. 6, wherein the point 23 will be withdrawn from the opening inthe punctured Wall 44 and this will permit the pressure from within the bulb to pass between the sides of the spear 22 and the wall of the opening 25, into the recess 27, through the grooves 33, the hole 2) and the opening 19, and therefrom into the interior of the container 6. The passage of the pressure from the bulb into the containerA will supply pressure within the container which will forcethe material therein upwardly through the tube 37 and outwardly through the nozzle 39from which it will be ejected in the form of a spray.

By releasing the pressure of the thumb upon the bulb, it will permit the spring to move the movable member 24 upwardly and thereby force the sealing washer against the valve shoulder 3@ and stop the passage of the pressure from the bulb into the container throughtV the hole 2). The bulb will then be tightly sealed against leakage by the washers 29 and 3l.

VIt will be clearly understood from the above description that my improved pressure applicator will permit the use of a renewable pressure bulb for supplying pressure within a container and also permit the. pressure from said bulb to be turned on and 'QE as needed and the 30-a is made tapered and the hole 20-a opens upon the surface of the taper so as to cause the valve washer 31-a to seat directly over the said hole.

I claim: l. A pressure applicator including a base attached to 5 a container and having a recess therein, a valve unit in said recess including a stationary member having a passage therein for communicating .the said valve unit with the interior of the container, a valve seat on said stationary member, a member movable upon said stationary l0 member and having a cooperating portion engageable :ith the said seat to close the valve, cooperating means between the movable valve member and the base for Vpreventing rotation of said `movable member, spring means normally holding Ysaid valveY closed, and means in said movable Vmember for connecting a pressure bulb thereto and supporting said pressure bulb in position wherein it projects outwardly of the recess and is engageable for moving the movable member against the pressure of the said spring means to cause opening of the valve, the said movablemember having a passage therein for communicating the interior of the pressure bulb with the passage in the stationary member` through the said valve.Y y r 2. A pressure applicator including a threaded base attached to the threaded portion of a container, the said basehaving a closure wall for closing the container, a ,Y Y central portion in said wall having a recess therein open- -ing at the top of the base, a valve contained within said recess and including a stationary kmember mounted upon the bottom of said recess, a movable member slidable upon said stationary member, means for preventing rotation of said movable member relatively to said base, a valve seat upon said stationary member, an annu- 35 lar valve portion on said movable member surrounding the stationary member and engageable with said valve seat to close the valve,'sp`ring means normallyurging said valve into closed position, the said stationary member having a passage therein communicating with the interior of the container, a communicating hole between said passage and the valve seat, a recess in said movable member for mounting a pressure bulb in communicaltion with said hole through the said valve, and a piercing portion on said stationary member having a point thereon adapted to pierce said pressure bulb upon movement of the movable member against the force of the said spring. Y

3. A pressure applicator including a base having a cap-like threaded portion attaching said applicator to a container,Y the top wall of said cap-like portion having a central portion projectingrupwardly and downwardly therefrom, a vertical recess inV said central portion, Va valve unit in said recess including a stationary stem mounted upon the bottom .of said recess and having a passage therein in communication with the interior of the container, an annular flange portion on said stationary member providing a Valve seat upon the Vunderside thereof, a member movable upon said stationary member and having an inverted recess therein receiving the said annular flange portion, a packing washer carried by said movable member around the stationary member and engageable with the said valve seat, a communicating v hole between the said passage in the stationary mem- @D ber and the valve seat adapted to be closed by the valve washer when the valve is in closed condition, a threaded recess at the top of the movable memberV adapted to receive a pressurevbulb and having means therein for preventnig leakageA between the pressure bulb and the movable member, *meansV for preventing rotation of the movable member relatively to thebase, the Ysaid movable member having a passage therein communicating the said threaded recess with the inverted recess, a vertical projection on said stationary member extending through said passage in the movable member and hav- References Cited in the file of this patent ing a piercing point at its upper end engageable with the bulb when the movable member is moved downwardly UNITED STATES PATENTS upon the stationary member, and passage means along Re 241153 Zellweger June 5, 1956 the sides of said vertical extension and flange portion 5 629,752 Murray `Tuly 25, 1899 for communicating the inten'or of the pressure bulb with 1,601,961 Allen Oct. 5, 1926 the passage in the stationary member through the said 2,120,297 Reinecke June 14, 1938 valve. 2,336,708 Ward Dec. 14, 1943