US2698115A

US2698115A - Collapsible paste tube or the like

Info

Publication number: US2698115A
Application number: US153029A
Authority: US
Inventors: Karl K Lacher
Original assignee: PALEY PHILLIPS N
Current assignee: N PALEY PHILLIPS; PALEY PHILLIPS N
Priority date: 1950-03-31
Filing date: 1950-03-31
Publication date: 1954-12-28
Anticipated expiration: 1971-12-28

Description

. 28, 1954 K. K. LACHER 2,698,115

COLLAPSIBLE PASTE TUBE OR THE LIKE Filed March 31, 1950 /6 Z9 M '20 g 30 v" V a2 a? 37 INVENTOR.

Jr/ Lacie)" 2;69s',"1'1s coLLAPs'IBLE PASTE TUBEfiRdIIEILIKE Karl K. Lacher, Milwaukeflwisi, assignorofbne-half to N Paley- 'Phillips, =Mil'walikee, Wis. Application'March 31,1950, Serial No. 153,029 4C aims. cl."z*'2z-"-499 This invention relates-"to collapsible paste-dispensing tubes, or the likej'a'ndfmore particularly, tqan-imprbved "closure? therefor, through which thepaste" may be l a d M It ls common-practiceto package' creams 'such as cos- "metics and pastes such as tooth paste;-"or the like, in

collapsible lead tubes, the'tubes being sealedclosed'at one'end and being provided Withflll exteriorlythreaded "opening-at the opposite'end. 'The threads' accommodate a cap, which, when inp'lace preventsthe'paste or cream from escaping from the tube andalso prevents drying of the contents. I I d I Such tubes, with the screw caps, require the complete 'removalof the cap-in order to remove'the pasteor cream from the tube, then 'the springjwould be strongenough to require excessive pressure on the tube before allowing the valve to open. This conditionjresulted either'in burst tubesor the use'of a tub'e'made'ofexcessively heavy stock, thus increasing the overall cost'of' the tube, adding to shipping costs, etc.

Such spring loaded dispensing tubes had a further disadvantage in that they permitted pressure on the tube to force the paste out through the valve under all conditions. That is, if the tube were packed in a suit case and the case closed exerting pressure on the tube, the paste or cream would be ejected over the contents of the case. There was no positive means such as a screw cap in such a tube to prevent such accidental ejection of the cream or paste.

It is an object of the present invention to provide a closure for a collapsible paste tube, or the like, which may be more conveniently closed and opened.

Another object of the invention is to provide a closure for a collapsible paste tube, or the like, which will prevent the ejection of the paste except when the closure is moved to open position.

Another object is to provide a 'collapsible paste tube with a manually operated closure which will be more readily operated than those now in use.

A further object is to provide a non-removable closure for collapsible paste tubes, or the like, which will have a snap action between open and closed positions.

A further object is to provide a closure member for collapsible paste tubes, or the like, which will be economical to manufacture and simple to use.

A further object is to provide an improved closure member for collapsible paste tubes, or the like, in which the danger of mislaying or losing the closure member is eliminated.

A further object is to provide an improved closure member for collapsible paste tubes which will maintain the contents of the tube fresh and pliable.

Still further objects will become apparent upon considering the following specification, which, when taken in conjunction with the accompanying drawings, illustrates a preferred form of the invention.

United States Pateit a surface of the top, the

2,698,1 15 Patented Dec. 28,1954

is made roughly-cylindrical in cross-'section'and hasthin Walls 11 of a-ductile material such as lead ortin'or a mixture of the'two. A conical head 14 is-provided'for the "tube which'head 14m'ay be of somewhat heavier material thanthe body of the walls 11 in order'that it hold its shape and support aeehtraIly located stub tube 15. 15 p The stub tube15 ispartiallyclosedby a'partition' 'l6 formed across the top or the stub tube 15"with-a 'pl urality of-symmetrically 'po'sitioned'apertures 18; through the partition to provide for the egress of the parts'or cream material-from the interior of the tube' 10 through the stub'tube 15 and out the apertures 18. I

A closure or bonnet, generally designated '20, is provided toshut off thesupply of paste when closed.

The closure or bonnet 20 may comprise a frustroconical top 22 which conforms in shape to the'partition 16 and is adapted to fit over the partition when the bonnet isin closed position, as seen in solid lines in Fig. l. "The top 22 has a horizontal ring 24 formed integrally'on the upper end of the frustro-conical' section, which ring-24has 'an opening fitting over a circular projection 25 on'the partition 16. H d

.A 'lurality of projections 27' are formed on {the inner v projections being identical inshape andspacingfto theiapertures 18 through the partition, so

that inthe closed positionthe projections 27 fit snugly within thejape'rtures ls -ar'id prevent passage ofthepaste from the tube. Being" that the projections-27 *fill" the apertures 18 thepastein "the'tube 11 is prevented from 'actingdirectly on the'cap22 when the cap isclosed, but must, 1nst ead, act only on the bottomof'the projections.

Thus, due'to the small cross sectionalareas of the projections 27 there is' little pressure tendingto' lift the "cap" 20 11 he e t t t the i any small pressure thus developed is readily compensated for by spring 35.

tube 11 is inadvertently squeezed and The outer edge dfthe metro-conical top 22 isprovided with a vertical cylindrical guide 28 which slides over the outer surface of the stub tube and guides the projections 27 into the apertures 18.

The lower end of the guide 28 has a flared skirt 30 formed thereon the edge of which may be any convenient configuration. The outer edge 32 of the skirt 30 lies between the lower edge of the guide 37 and the top of the conical head 14 and forms a finger grip to raise the bonnet 20.

A diaphragm 35 of brass, steel or other metal of high resilience is imbedded in the tube. If desired the diaphragm may be made of a plastic having the required characteristics. The outer periphery of the diaphragm 35 corresponds to that of the skirt 30 and is held in contact with the skirt 30 by an inturned flange 37 on the skirt.

In practice the skirt is slightly larger in diameter than the periphery of the skirt so that the diaphragm snaps the bonnet into both open and closed position.

Operation The bonnet 20 is normally in closed position, as seen in solid lines in Fig. 1, with the frustro-conical top 22 in contact with the top of the partition 16 and the projections 27 in the apertures 18. In this position the diaphragm 35 is held flexed downwardly by the outer edge 32 of the skirt 30.

When it is desired to use the paste in the tube 10 a finger may be inserted under the outer edge 32 of the skirt 30 urging the bonnet 20 into its upper position as seen in broken lines in Fig. l. The upward movement of the bonnet 20 is accomplished by moving the diaphragm 35 upwardly which causes the diaphragm 35 to flex from a down-turned position to an upturned position, the movement being a snap action which moves the entire bonnet to its upper or open position.

In its upper or open position the projections 27 are "withdrawn from the apertures 18 in the partition 16 and upon pressure on the tube the paste or cream in the tube 10 flows out through the apertures 18 and through the central aperture 39 in the bonnet to the point of use.

When suflicient paste or cream has been ejected the skirt 30 may be pressed downward causing the diaphragm to snap from the upturned to the downturned position and forcing the cream or paste from between the bonnet 20 and the partition 16 out through the aperture 39 where it may be wiped off in any convenient manner.

While the invention has been described as applicable to collapsible paste tubes holding such substances as cosmetic or shaving creams, tooth paste, library paste etc., it will be apparent that the same sort of closure can be used on a rigid container such as a bottle to dispense liquids such as lotions or toilet water.

It will be apparent further that the bonnet, due to the double spring action of the diaphragm 35 will remain closed against all ordinary pressure on the tube 10, and thus insures against accidental ejection of paste.

The hereinbefore described form of the invention is to be taken merely as a preferred embodiment thereof and various changes in size, shape and arrangement of parts may be made without departing from the spirit of the invention or the scope of the subjoined claims.

That which is claimed as new and is desired to be secured by United States Letters Patent is:

1. In a collapsible paste dispensing tube, or the like, a stub tube and a closure member comprising, a partition across one end of said stub tube having a plurality of apertures therein for the passage of paste, a bonnet fitting over said stub tube and said partition having a central opening therethrough, said bonnet having a relatively large area in contact with said partition, a plurality of projections arranged about the periphery of the opening on the inside of said bonnet, said projections fitting into said apertures when the bonnet is in closed position to fill completely all the apertures in said partition and present a relatively small area to pressure from within the tube, said projections lying outside said apertures when the bonnet is in open position, and means to limit the movement of the bonnet.

2. In a collapsible paste dispensing tube, or the like, a stub tube and a closure member comprising, a partition across one end of the stub tube having a plurality of apertures therein for the passage of paste, a bonnet fitting over said stub tube and said partition having a central opening therethrough, said bonnet having a relatively large area in contact with said partition, a plurality of projections arrangedv about the periphery of said opening on the inside of said bonnet, said projections fitting into all apertures when said bonnet is in closed position to completely fill the same and present a relatively small area to pressure from within said tube, said projections lying outside of said apertures when the bonnet is in open position and means including a snap action to move the bonnet from fully closed to fully open positions.

3. A device as recited in claim 2 in which the last named means includes a flared skirt formed on said bonnet, a diaphragm embedded in the exterior of the stub tube and projecting outwardly therefrom, and means on said skirt to retain the outer edge of the diaphragm, said diaphragm being adapted to move the bonnet between open and closed positions with a snap action.

4. In a collapsible paste dispensing tube, or the like, a stub tube and a closure member comprising a partition, across one end of said stub tube, having a plurality of apertures therethrough for the passage of the paste, an upwardly extending plug on the upper side of said partition, a bonnet fitting over said stub tube and said partition said bonnet having a central opening therethrough fitting over said plug when the bonnet is in closed position, said bonnet having a relatively large area in contact with said partition, a plurality of projections on the inside of said bonnet, said projections being arranged about the periphery of said opening and fitting into said apertures when the bonnet is in closed position to completely fill all the apertures to present a relatively small area to fluid pressure from the paste, said projections lying outside said apertures when the bonnet is in open position to permit passage of paste through the apertures, a flared skirt on said bonnet, a diaphragm embedded in the exterior of the stub tube and projecting outwardly therefrom, and means on said skirt to retain the outer edge of said diaphragm, said diaphragm being adapted to move said bonnet between open and closed positions.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date Re. 18,694 Kalb Nov. 8, 1932 1,057,538 Gammeter Apr. 1, 1913 1,940,706 Aufricht Dec. 26, 1933 1,958,414 Bogeaus May 15, 1934 1,977,537 Warmuth Oct. 16, 1934 2,483,148 Nicolle Sept. 27, 1949