US2652857A - Valve assembly - Google Patents

Description

Sept. 22, 1953 P. ENGSTRUM VALVE ASSEMBLY Filed July 28, 1950 q Etta/wag Patented Sept. 22, 1953 Paul. Enestrum. Associates, Inc.,

Washington,

D. 0., a corporationof Delaware Application Jnlyzfl, 1950, .SerialNo. 176,422.;

4 Claims. 1

This invention relates to a valve assembly.

The invention is more particularly concerned with a valve assemblyfor use in connection with small containers for liquids havinga high volatile solvent in chemical compositions, such as resins, waxes, paints, etc.

Furthermore, the invention 'is more particularly characterized by a relatively small valve assembly for operative association with a relatively small container, and wherein the valve assembly is adapted to control jet dispensing-of liquid from the container,

The improved valve assembly, in general, comprises a housing having ,achamber for communication with the interior of a container, a small liquid dispensing port opening out from the chamber, and a valve seat and cooperating valve within the chamber for controlling the flow of liquid from a container and through the port.

In such a valve construction, the port is relatively small and is snble to. becoming partially or wholly closed by the dryingof liquidstherein between dispensin .operations. Furt rmor in such constructign, the end of the. port is substantially distant f omthe valve-and according;- y m liq remainsin the port, after closure f th v lv whi h results in. bJ' Ol'IiO bIQQIQD- lets falling from the, end of the. port.

It is accordingly apr mary object of. this'invention to, pr vide. avalvea semblyfw the above noted purpose, wherein the above noted objections are wholly overcome.

A further object of the invention is to: provide a valve assembly of the above noted character, wherein the liquid flow-controlling valve is provided with a port closing and cleaning member.

Other objects and advantages of the invention will become apparent in the course of the following detailed description, taken in connection with the accompanying drawing, wherein- Figure 1 is a vertical axial section of the improved valve assembly, the valve being shown in open position in dot-and-dash lines.

Fig. 2 is an end view of the valve assembly as viewed from the right of Fig. 1.

Fig. 3 is a plan view of a spring disk forming an element of the assembly.

Referring now in detail to the drawing, wherein the assembly is illustrated many times the actual size thereof, I designates a housing having a broken perimeter, since such housing may be of any suitable form for operative association with any type liquid container.

A cylindrical valve member H is suitably supported within an opening I2 in the housing, and

such member includes a camming flange I3 which projects within a chamber M in the housing l0.

Disposed within the chamber [4 for sliding movement axially of the housing is the flange [5 of a cup member it having a base l7.

Disposed within the valve member I I for movement axially thereof is a shaft or stem l8 whose forward end is provided with a head 19 which includes a triangular portion 20 at the rear end thereof and a relatively small cylindrical member 21 at the forward end thereof. The head includes a frustoconical portion 22 between por-' tion at and member 2| which provides a valve normally engaged with a seat provided at the rear end of port Ll" in which the. member 21 is normally disposed. I

The shaft ltfurtherincludes an enlarged projection 23 at its rearwendand arib 24 joining such projection with the body of the shaft:

A coil spring 25 has one end thereof engaged over said projection 23 and abutting said rib 24,

while the opposite end of the spring restsin the cup member It in bearing engagement withthe base'll thereof. r

It will be seen from Fig. 1 that the cup member I 6 projects rearwardly of the chamber l4 and into a further enlarged. chamber in the housmg.

A washer 26 provides a stop for the cup member 56 under the action of spring 25, and resting on the washer 26 is the yieldable flange 21 of a button 28, which is preferably formed of rubber and is provided with a recess in which the rear end of cup member I6 is seated.

A second washer 29 is disposed against the opposite side of flange 21 and a split spring locking ring 30 is disposed in contact with washer 29.

A yieldable disk 3| is disposed within chamber l4 between the camming flange l3 and the flange l 5 of the cup member I 6. Such disk is of frustoconical form and is provided with a central aperture 32 receiving the shaft l8, and a plurality of slits 33 are provided in the disk for effecting proper flexing action thereof.

A suitable conduit 34 is provided for flow of liquid from a container into the chamber l4, and the flow of liquid may be eifected by any desired means involving either suction or pressure.

The valve assembly is shown in normal position in full lines in Fig. 1, wherein the valve 22 is seated and the member 2| is disposed within the port I I, whereby liquid cannot be ejected through the port.

I When it is desired to render the assembly op- 3 erative, finger or thumb pressure is exerted on the button 28 causing same to move inwardly to the position indicated in dot-and-dash lines.

This inward movement of the button causes the cup member l6 to also move inwardly to the position indicated by dot-and-dash lines. Upon such inward movement of member I6, the flange thereof engages the rim of disk 3] and moves same forwardly to the dot-and-dash line position thereof which causes the disk to flex about the oamming flange 13, whereby the inner edge thereof about the aperture 32 engages the rib 24 and moves the shaft l8 rearwardly against the action of spring 25.

Upon such rear movement of the shaft l8 the head I9 is also moved rearwardly, thereby unseating valve 22 and withdrawing member 2| from within the port I l' to the position indicated in dot-and-dash lines.

Upon release of pressure on the button 28, the spring 25 will overcome the spring action of disk 3! and move the shaft 18 forwardly and thereby seat the valve 22 and move member 2| into the port H. The successive movements of member 2i into and out of port ll keep the wall thereof clean by its wiping action thereon, and furthermore such member closes the outer end of the port upon closure of valve 22 to preclude drops from falling from the port.

The triangular head portion 20 acts to guide the shaft within the member I I while permitting flow of liquid, and the spring 25 serves to center the inner end of the shaft within the member 1 l.

VVnile I have disclosed my invention in accordance with a single specific embodiment thereof, such is to be considered as illustrative only, and not restrictive, the scope of the invention being defined in the following claims.

What I claim and desire to secure by Letters Patent is:

1. In a valve assembly, a housing having a liquid receiving chamber therein, a cylindrical valve member supported within said housing in communication with said chamber and having a liquid flow port in its outer end, a valve stem disposed within said member for movement axially thereof, a valve seat in said member adjacent said port, a valve on said stem normally engaging said seat, a push member supported by said housing, a coil spring disposed between said push 4 member and one end of said stem for normally maintaining the valve in engagement with the seat, and yieldable means disposed within said chamber and having an operable engagement with said stem, valve member and push member for withdrawing said valve from the seat in opposition to said coil spring upon movement of said push member in a direction toward said seat.

2. The structure according to claim 1, wherein said yieldable means comprises a frusto-com'cal disk having a central aperture through which said stem extends, a rib on said stem engageable by said disk, and radially spaced circular projections on said valve member and said push member engageable with opposite sides of said disk for flexing same in the movement of the valve from the seat.

3. The structure according to claim 1, wherein said push member comprises a rigid cup member within which one end of said spring seats, and a yieldable button externally of said cup member and receiving a portion of same.

4. The structure according to claim 1, wherein said push member comprises a rigid cup member receiving one end of said spring, a yieldable button externally of said cup member and receiving a portion thereof, and stop means disposed between said cup member and said button and engageable with the former for limiting re traction of the push member under the action of said spring.

PAUL ENGSTRUM.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,146,011 Mason July 13, 1915 1,146,012 Mason July 13, 1915 1,477,647 Hook Dec. 18, 1923 1,507,139 Pike Sept. 2, 1924 1,607,363 Prescott Nov. 16, 1926 1,719,687 Brown July 2, 1929 1,779,064 Gohring Oct' 21, 1930 1,922,720 Vaughn Aug. 15, 1933 2,174,868 Coffeen Oct. 3, 1939 2,414,577 Adair Jan. 21, 1947 2,424,527 Whyte et al July 22, 1947 2,490,511 Coor'tot Dec. 6, 1949 2,557,785 DuFour June 19, 1951

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