Патент USA US2134910код для вставки
NOV. 1, 1938. w_ c. DVORAK 2,134,910 PASTE TUBE Filed March ‘7, 1.953 ' 2 Sheets-Sheet l Inventor Aiiorneq's Nov. 1, 1938. w. c. DVORAK 2,134,910 ' PASTE TUBE Filed March '7, 1933 9 2 Sheets-Sheet 2 /0 Y I Inventor Wencz'l C'Jvorwk By /4 Aiiorneys 2,134,910 Patented Nov. 1, 1938 UNITED STATES PATENT‘ OFFICE 2,134,910 PASTE TUBE Wencil C. Dvorak, Dodge, Nebr. ‘ Application March 7, 1938, Serial No. 194,458 4 Claims. (Cl. 221-450) This invention relates to ?exible paste tubes manner forming a ?nger seat whereby at the of the type usually employed for toothpaste, recess !5 the wall of the tube may be pressed shaving cream, salves, and the like, and an ob ject of‘ the invention is to provide a paste tube having improved closure means therefor. In accordance with the present invention the paste tube is provided with a valve for closing the neck thereof and means operable in response to pressure applied at a predetermined point on 10 the tube for moving the valve to an unseated position to permit the, contents of the tube to inwardly for the‘p‘urpose of bringing pressure exude therefrom. “ The invention together with its objects and advantages will be best understood from a study 15 of the following description taken in connection with the accompanying drawings wherein— Figure l is a plan view of the tube embodying the features of the present invention, Figure 2 is a side elevational view thereof, 20 Figure 3 is an enlarged detail sectional view taken substantially on the line 3—3 of Figure 2, Figure 4 is a view somewhat similar to Figure 3, but showing the valve in closed position, the valve being shown in open position in Figure 3, Figure 5 is an enlarged fragmentary detail sec 26 tional view illustrating certain details hereinafter more fully referred to, Figure 6 is a perspective view of the valve core and stem, and 30 Figure 7 is a detail sectional view taken sub stantially on the line 'l—'l of Figure 2. Referring to the drawings by reference nu of the tube, in response to external pressure on the tube, to exude therefrom. At the inner end thereof the shoulder 1 is 10 provided with a cross brace l8 that at the end thereof forming the inner end wall of‘ the recess 45 terminates short from the periphery of the tube 5 so as to permit the tube to shift longitudi nally slightly relative to the shoulder 'l as is necessary incidental to the compressing of the tube at the point I‘! thereon. Also so as not to interfere with the ?exing in wardly of the spring 12 brace I8 is provided with an elongated slot l9. 20 It will thus be seen that normally under ac tion of spring [2 valve member ID seats within the seat 9 providing an efficient closure for the tube serving to exclude dirt from the tube. When it is desired to discharge some of the 26 contents of the tube therefrom pressure with the thumb, preferably, engaging the wall in the region of recess I5 is applied at the point I‘! to the wall of the tube and this pressure is trans mitted to the end I6 of the spring l2 causing the 30 latter to flex inwardly to the position shown in merals it will be seen that the improved ?exible Figure 3. This obviously results in the valve l0 being drawn inwardly out of engagement with paste tube comprises the ?exible tubular body its seat 9 so that as external pressure is applied 35 5 sealed at one end in the usual manner as at 6 and provided at the opposite end thereof with a shoulder portion 1 that is substantially rec tangular in cross section as shown in Figure 7 and tapers to an integral neck 8. The neck 8 is provided at the discharge end 40 thereof with an internal conical valve seat 9 45 against the end N5 of the spring to flex the spring inwardly to a position suggested in Figure 3 whereby to move the valve member ID inwardly off of its seat 9 and thereby permit the contents to the tube either by rolling the tube upon itself 35 as is sometimes done, or otherwise, some of the contents of the tube will be forced to exude there from through the neck 8. Upon release of pressure at the point I‘! spring will spring back to its normal position urging the valve member ID into engagement with its against which is adapted to normally seat the seat 9 for substantially sealing the tube, the parts substantially conical valve core I0 provided on when the tube is sealed being as shown in Fig one end of a stem ll. ure 4. Anchored within the shoulder 1 adjacent the inner end of the shoulder is one end of a ?at spring [2 to which is welded or otherwise se cured as at E3 the inner end of the stem II. At the side thereof opposite to the anchored 50 end 14 of the spring l2 the shoulder l is formed to provide a recess I5 which accommo dates the angular free end [6 of the aforemen tioned spring l2, The portion of the tube 5 forming the outer 65 wall of the recess I5 is provided at point I‘! in a It is thought that a clear understanding of the construction, utility and advantages of a flexible paste tube embodying the features of the present invention will be had without a more detailed description thereof. Having thus described the invention what is 60 claimed as new is: 1. In a ?exible paste tube, an integral neck provided internally thereof with a valve seat, a a spring member anchored at one end within said tube and extending transversely of the tube, a 55 2 2,134,910 valve stem secured at one end thereof to the posed intermediate said brace and the neck spring intermediate the ends of the spring, a equipped end of the tube. valve disk on the free end of said stem and nor 3. In a ?exible paste tube of the character de scribed, an integral neck, a transverse spring member mounted internally of the tube and mally urged by said spring into seating engage ment with said valve seat, said spring adapted to bow longitudinally incidental to pressure being v adapted to be flexed longitudinally incidental to applied to the wall of the tube in a manner to the application of pressure laterally to the tube flex a portion of said wall inwardly into engage at a point substantially in alinement with said spring member, a valve stem secured at one end ment with the free end of the spring, to thereby 10 draw said valve disk inwardly of the tube out of engagement with said valve seat. 2. In a ?exible paste tube, an integral neck provided internally thereof with a valve seat, a spring member anchored at one end within said 15 tube and extending transversely of the tube, a valve stem secured at one end thereof to the spring intermediate the ends of the spring, a valve disk on the free end of said stem and nor mally urged by said spring into seating engage 20 ment with said valve seat, said spring adapted to bow longitudinally incidental to pressure being applied to the wall of the tube in a manner to ?ex a portion of said well inwardly into engage ment with the free end of the spring, to thereby 26 draw said valve disk inwardly of the tube out of engagement with said valve seat, and a brace extending transversely of said tube interiorly thereof, said brace at one end thereof and the wall of said tube being mutually separated so as 30 not to interfere with the inward ?exing of the tube wall when the latter is so ?exed inwardly for ?exing said spring, said spring being dis thereof to said spring intermediate the ends of the latter, and a closure member for said neck on the free end of said stems, and movable inward ly of the neck to an open position incidental to the aforementioned longitudinal ?exing of said transverse spring member. 15 4. In a ?exible paste tube of the character de scribed, an integral neck, a transverse spring member mounted internally of the tube and adapted to be ?exed longitudinally incidental to the application of pressure to the tube, a valve stem secured at one end thereof to said spring intermediate the ends of the latter, and a closure member for said neck on the free end of said stem, said tube at one side thereof being provided with an internal pocket, and said spring having 25 the free end thereof extending into said pocket and provided with a lateral longitudinally curved projection to facilitate contact of the wall of the tube with the spring for ?exing the latter inci dental to pressure being applied to the wall of 30 the tube in the region of said pocket. WENCIL C. DVORAK.