MXPA97009131A - Valve distributor of fluid for correcc - Google Patents

Abstract

The present invention relates to a correction varnish dispenser characterized comprising: a body element adapted to retain a correction varnish, tip means disposed at the front end of said body element for the supply of correction varnish from said body element towards the surface the surface on which a correction is to be made, said tip means has an orifice with a circular rib formed in the front end thereof that opens in a tubular passage extending towards and communicating with the interior of said body element: a spherical ball of larger diameter than said circular rib of the hole disposed within said tubular passage adjacent to the circular rib; valve means for measuring the flow of corrective varnish through said pointed means towards the spherical ball, said valve means comprises a slidable cylindrical valve element positioned in the tubular passage, said valve element comprises a substantially flat forward facing surface having a portion thereof arranged to contact the more posterior surface of said ball, a plurality of axial cavities being formed in said valve element adjacent to the wall of said valve element. said tubular passage and extending up to an area adjacent said spherical ball to thereby provide a plurality of channels for the corrective flow toward the spherical ball; means disposed adjacent the periphery of said surface that substantially forwardly forward of the spherical element; valve for centering the ball on said surface, and the valve means further comprises means for urging said valve element to contact said ball.

Description

VALVE DISTRIBUTOR OF FLUID FOR CORRECTION 1 - . 1 - FIELD OF THE INVENTION. The present field of the invention is referred to fluid distributors and in particular to a fluid distributor for correction of the type 1Spiz 6 pl (jma COfflo sß generally used for correction of typing or other printing errors. THE INVENTION Several devices are known which are used in the correction of errors that occur in typed material or other printed media Many of these devices employ an ol pen structure which can be moved along the line to Erase, applying the liquid substance, which is generally white in color.These devices generally have internally a plunger biased by a spring that closes the discharge orifice of the device to prevent drying out of the fluid reservoir for correction, or as disclosed in FIG. US Patent 5,056,949, issued to Petri lio and assigned to the assignee of the present invention, a spherical ball can be employed which it is biased by a spring to ensure its contact with the paper during the erasing procedure, as well as to close the discharge orifice. While the ball biased by a spring has proved successful in achieving the intended function, it has been found that a valve arrangement more efficient than that revealed in REF: 26120 The Petpllo patent mentioned above can be improved which will achieve a more uniform flow of liquid to the ball and therefore the printing will be erased, which is important in the prior art arrangements. The distribution mechanism of the present invention is effective in achieving improved results by providing valve elements that retain their structural integrity under operating conditions during the life of the device. 3. DESCRIPTION OF THE INVENTION. It is therefore an object of the present invention to provide a pen-type correction fluid dispenser having a spherical ball in which the flow of fluid material to the ball is more uniform than in previously developed devices. A further object of the invention is to provide a fluid distributor for correction of the type which is simple to manufacture and easy to operate. Still another object of the invention is to provide a pen or pen type correction fluid dispenser that is simple to manufacture and has a minimum number of components.

The foregoing and other objectives that become apparent confers that the description to be developed is achieved by the provision of a correction fluid dispenser that includes a body member adapted to retain a r-z fluid. Recess and a tip disposed towards the front end of the body member for distributing the correction fluid from the body member to the surface on which the correction will be made. The tip member has a hole with a circular ring formed at the front end which opens towards the rear in a tubular passage extending and communicating with the interior of the body member. A spherical ball of larger diameter than the orifice of the circular ring is positioned within the tubular passage adjacent to the circular ring and a valve means for measuring fluid flow for correction, the tip and spherical ball are positioned within a tubular passage. The valve means comprises a slidable ndrical valve member which is positioned in a tubular passage and has a substantially flat forward surface with a portion positioned to contact the back surface of the ball. The valve means further comprises a plurality of axial cavities formed immediately adjacent to the wall of the tubular passage extending to an area adjacent to the spherical ball. In addition, the valve means includes a means for tilting the valve member to have contact with the spherical ball. The axial cavities provided on the valve member are generally formed by a plurality of flange members extending radially outwardly from the valve member., the outer edges of these are positioned for slidable couplings with the wall of the tubular passage. The flange members may be of any number but are generally at least four in number. The cylindrical valve member generally includes a plurality of forwardly projecting protuberances positioned adjacent the circumference of the flat surface of the valve member. The protuberances are located adjacent to the spherical ball during the operation of the dispenser when the ball is rolled on the flat surface. The protrusions projected forward are at least four in number and each protrusion has a spherical surface provided at its forwardmost end for adjacent positioning of the spherical ball during the operation of the fluid distributor for correction. The protuberances give direction to center the ball. The greatest contact of the ball is on the flat face of the valve means, however, during operation of the fluid distributor for correction the ball may have contact with one or more protuberances. In a more detailed sense the valve member is generally formed of an axially positioned substantially solid body portion having a plurality of flange members extending radially on the outside with the flanges extending axially outside the body portion on the outside. rear direction. The fluid distributor for correction can also be including a helical spring serving as a tilting means and having contact with the rear surface of the valve member, when biasing the valve member is in contact with the spherical ball to keep the spherical ball in contact with the medium over which it occurs the erasure, as well as to maintain the contact of the spherical ball with the circular ring hole of the tip member while the corrections are not being made. In an alternative embodiment of the invention, the correction fluid dispenser employs a valve member wherein the plurality of flanges each have a rear and exterior facing surface epte, positioned to have contact with a facing surface. frontally and internally, formed in the tubular passage in which the valve member is positioned. The flanges are formed of a resilient plastic material, and the facing surfaces externally and internally are positioned relative to each other such that the flanges are flexed internally from their initial position as the valve member is forced backward. The valve member moves forward when the force is removed from the valve member and the flanges are allowed to return to their initial position, thus creating a tilt means for the valve member forcing it into contact with the spherical ball without the use of a different or separate biasing element.

The foregoing and other features of the invention will be more particularly described in conjunction with the embodiments mentioned, and with reference to the accompanying drawings, wherein: Figure 1 is a sectional elevational view showing a portion of a constructed fluid distributor for correction according to the teachings of the present invention; Figure 2 is a sectional elevational view showing a portion of the structure of Figure 1 taking an enlarged scale for clarity; Figure 3 is an elevational view showing an element of the valve means employed in the structure of Figures 1 and 2; Figure 4 is a top plan view showing details of that portion of the structure of Figure 3; Figure 5 is a bottom plan view showing details of the lower portion of the structure of Figure 3; Figure 6 is a sectional elevational view taken along line VI-VI of Figure 4 showing details of the structure of Figures 3, 4 and 5; Figure 7 is a sectional elevational view taken along line VI I-VI I of Figure 4 showing more details of the valve means element; Figure 8 is a sectional elevational view similar to Figure 1 showing a portion of a correction fluid dispenser incorporating an alternative structure of the invention; Figure 9 is a elevational view similar to Figure 3 showing an element of the valve means of Figure 8; and Figure 10 is a sectional view similar to Figure 6 showing details of the structure of Figure 9. Referring now to the drawing and in particular to Figure 1 there is shown a correction fluid dispenser 10 having an elongated member of circular body 12 with a cylindrical tip 14 placed at the front end thereof. The body member 12 is not shown entirely, but generally extends axially backwardly from the end 14 in a pen or pencil configuration to be manipulated by the user, and is capable of containing a desired amount of fluid composition for gravity correction , flowing from the body member. The tip 14 is shown formed of two tip pieces 16 and 18 which can be adjusted to each other and the entire tip has a portion toward the rearmost part of a diameter that can be adjusted within the tubular portion of the body member 12. point 14 has a tubular passage 20 whose back The end opens into the body member 12 and is huddled at its front end to give a restrictive passage 22 having a larger opening diameter in the passage 20 and a smaller opening diameter at the front end. The front end of the restrictive passage 22 opens into a cylindrical cavity 24 which at its front end enters a main tubular passage 26 formed by a cylindrical wall 28. The cylindrical wall 28 terminates in a circular ring 29 having a portion of the curved edge 30 which serves to retain the spherical ball 32 within the tubular passage 26. As best shown in Figure 2 the spherical ball 32 is larger in diameter than the diameter of the edge portion 30., and the two dimensions are such that more than half of the ball will remain retained in passage 26 with the ball in a forward position. The ball 32 can be of any substantially hard, strong material and is generally made of stainless steel which is resistant to corrosion, or of a plastic material. Still referencing Figures 1 and 2, the valve means such as the valve member 34 is located to have contact with the tubular passage 26, the valve member having a facing surface 36, is located to have contact with the valve member 34. the spherical ball 32. The valve member furthermore has its rearmost portion in contact with a coil spring 38 positioned in the cylindrical cavity 24. The coil spring 38 is made of any available spring material, but preferably of a steel resistant to the corrosion and constant springing which will give strength in the reai approximately 100 - 200 grams on the spherical ball 32 when the ball is in the most advanced position. Pending now Figures 3 to 7, the valve member 34 consists of a plurality of axial cavities 40 which are formed by a sub-solid solid body portion 42 having having four flange members 44 equally spaced over the body portion and extends radially from there to the outside. It will be noted that the flange members 44 extend rearwardly away from the body portion 42 by a distance that is less than half the total length of the body portion. The unsupported length of the flange members 44 is minimized to maintain the stiffness of the valve member 34 in that the force of the coil spring 38 is applied directly to the rear surface of the flange members 44, as shown in Figures 1 and 2. In addition to the surface 36 facing the front end of the valve member 34, four projected forwardly protruding elements 46 extend outwardly from the valve member and are located symmetrically on the facing surface 36. Each of the protrusions 46 has a spherical surface formed at the front end locating adjacent to the spherical ball 32, as will be referenced during the description of the operation of the dispenser for correction. The valve member 34 is generally made of a plastic material such as poly-etherramid material, which is an amorphous thermopastic, but can be of any material exhibiting high strength, low friction and dimensional stability, qualities required for the tensioning of the member valve. As the outer surface of the flange members 44 are placed in a fit coupled with the tubular passage 26 and must be able to slide in the passageway while in contact with the wall of the tubular passageway during the use of the correction fluid distributor. , a strong and strong material must be employed in the manufacture of the valve member 34. Referring back to Figure 1, it will be noted that the tip 14 is substantially enclosed in a capsule member 48 giving an internal cavity 49 for receiving the tip 14 in that sense when the fluid distributor for correction 10 is not used. In order to ensure that a seal is obtained in the member capsule 48, a gasket is placed on the internal wall of the cylindrical cavity of the capsule member so that it fits fitted to the external wall of the tip 14. In operation, with the capsule member 48 removing the spherical ball 32 is placed in contact with the Index on a surface to be erased and a slight force is applied to the front end of the distributor for correction 10 which moves on the surface causing the ball spherical 32 rolls within the tubular passage 26. When the spherical ball 32 is rolling along the surface to be erased it moves on the surface 36 it faces, and is pushed inside. The ball may then have contact with the spherical surface of one or more of the "centralized" protuberances 46 which, as in the case of the facing surface 36, will have a point of contact with the spherical ball 32. As previously indicated, the coil spring 38 is in contact with the rearmost surface of each of the flange members 44 causing the spherical ball 32 to remain in contact with the valve member 34 on the facing surface 36, and / or possibly with a (or more) of the protuberances 46. While still referring to Figures 1 and 2, with the correction fluid stored in the body member 12, the fluid flow takes place through the tubular passage 20 since the fluid is distributed through the spherical ball 32. From the tubular passage 20 fluid flows through the restrictive passage 22 into the cylindrical cavity 24 and then into the tubular passage 26. In the tubular passage 26 the fluid flow is cooled the body portion 42 of the valve member 34 and is forced to flow along the axial cavity 40, between the flange members 44, and therefore it is directed to the spherical ball 32 on its outermost surface more than in the center of the ball. In this way fresh fluid is flowing to that portion of the ball which is introduced to the surface on which the erasing occurs, rather than to the center of the ball as in the prior art arrangements. As will be seen, the spherical ball at any time is at the point of contact with the facing surface 36 and may also be a point of contact with one (or more) of the protuberances 46, therefore less surface area of the ball for support and a greater surface area of contact with the fluid is presented for correction that has previously been obtained in devices of this type. In addition, the structure of the valve member 34 is one characterized in that the flow of fluid through the valve is maximized by the construction of the flange members, which maintain the structural integrity of the valve member (when applied). a force by the coil spring 38). Referring now to Figures 8 to 10 (characterized in that elements such as those of Figures 1 to 7 are given as a numerical reference), an alternative embodiment of the invention is shown by the fact that the tilt means does not require a member separate such as the coil spring 38 but where the valve member 34 is replaced by the valve member 34a and a tip piece 18 is replaced by the tip piece 18a. The tip piece 18a as shown in Figure 8 has formed at its forwardmost periphery an arcuate surface 90 which is located frontally and internally to have contact with the portion of the rearmost portion of the valve member 34a. As best shown in Figures 9 and 10 the valve member 34a comprises four flange members 44a located similarly to the flanges 44 of the valve member 34 described above. Each of the flanges 44a, however, are positioned with an arcuate surface 92 facing towards the outer rear part which in the assembly shown in Figure 8 is positioned to have contact with the surface 90 on the nose piece 18a . While the valve member 34 as described, is generally made of plastic material such as the poly-ether material, which is an amorphous thermoplastic, the material for the valve member 34a can be of any material, which is generally plastic , and also exhibit high resistance. low friction and dimensional stability, the above-mentioned requirements also exhibit effective resistance by returning the flanges 44a to their original position when the flanges are forced internally as described below. In the operation of the modality shown in Figure 8, the spherical ball 32 is placed to have contact with an Index on a surface to be erased and a slight force is applied to the end of the front part of the distributor for correction, as in the previously described mode. The ball 32 is forced internally against the valve member 34a and as in previous mode, the flushing fluid flows along the axial cavity 40 between the flange members 44a, and is supplied to the ball 32 and then to the surface to be erased. However, rather than having contact with the coil spring 38 as in the previous embodiment, when the shoulders 44a are forced towards the rear and the arcuate surface 92 of each flange has contact with the arcuate surface 90 on the nosepiece 18a, each of the flanges 44a are internally flexed due to the strength of the selected material from which the valve member 34 is manufactured. As the force is released from the ball 32 by removing the dispenser from the medium to be erased, the flange members 44a that have been internally biased are returned to their normal position by moving the valve member 34a in ascending fashion and in its original position, as shown in Figure 8.

It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects to which it relates. Having described the invention as an antecedent, the content of the following is claimed as property:

Claims (22)

1. REVINDICACIQNES 1 A correction fluid dispenser characterized in that it comprises: a body member adapted to retain a correction fluid; tip means disposed at the front end of the body member for supplying the correction fluid from the body member to the surface on which the correction is to be made; tip means having a hole with a circular edge formed at the front end of the same opening towards the interior of the tubular passage extending and communicating with the interior of the body member; a spherical ball of greater diameter than the hole of the circular edge placed in the tubular passage adjacent to the circular edge; valve means for measuring fluid flow for correction through the tip means towards the spherical ball; Valve means comprising a cylindrical slide valve member positioned in the tubular passage, valve member comprising a substantially flat frontwardly forward surface having a portion thereof positioned to have contact with the surface of the rear most part of the valve. ball; the valve member further comprises a plurality of axial cavities formed therein adjacent to the wall of the tubular passage and extending to an adjacent area of the spherical ball to thereby provide a plurality of channels for fluid flow for correction towards the spherical ball; and valve means comprising means for biasing the valve member to contact the ball.
2. 2 A correction fluid distributor as set forth in claim 1, characterized in that the axial cavities are formed by a plurality of flange members extending radially outside the valve member, the outer edge thereof being placed for coupling slidable with the wall of the tubular passage.
3. 3 A fluid distributor for correction as set forth in claim 2, characterized in that the ridges are at least four in number.
4. 4 A correction fluid distributor as set forth in claim 1, characterized in that it further comprises a plurality of protuberances projecting forward and placed adjacent to the circumference of the flat surface of the valve member.
5. 5 A fluid distributor for correction as set out in claim 4, characterized in that the protuberances projected forward are at least four in number.
6. 6 A correction fluid distributor as set forth in claim 4, characterized in that the projections projecting forward provide a spherical surface at the forwardmost end that has contact with the spherical ball during the operation of the correction fluid dispenser.
7. A correction fluid distributor as set forth in claim 1, characterized in that the valve member is formed of a substantially solid cylindrical body portion positioned axially and having a plurality of flange members extending radially towards the body. outside, and wherein the ridges extend axially outside the body portion in the direction toward the rear.
8. A correction fluid distributor as set forth in claim 7, characterized in that the ridges extend axially out of the body portion less than one-third the length of the valve member.
9. A correction fluid distributor as set forth in claim 1, characterized in that the tilt means has a helical spring that contacts a back surface of the valve member to tilt the valve member that is in contact with the spherical ball. .
10. A correction fluid distributor as set forth in claim 3, characterized in that it comprises a plurality of protuberances projecting forward, positioned adjacent the circumference of the flat surface of the valve member.
11. 11 A correction fluid dispenser as set forth in claim 10, characterized in that the protrusions projected forward are at least four in number.
12. 12 A correction fluid distributor as set forth in claim 11, characterized in that the protrusions projecting forward, provide a spherical surface at its most advanced end to contact the spherical ball during the fluid distribution operation for correction.
13. A correction fluid manifold as set forth in claim 12, characterized in that the tilt means has a helical spring that contacts a back surface of the valve member to tilt the valve member in contact with the spherical ball.
14. A correction fluid distributor as set forth in claim 8, characterized in that it also comprises a plurality of projections projected forward, placed adjacent to the circumference of the flat surface of the valve member.
15. A correction fluid dispenser as set forth in claim 14, characterized in that the protrusions projected forward are at least four in number.
16. A correction fluid manifold as set forth in claim 15, characterized in that each of the protrusions projected forward provide a spherical surface at its most advanced end to contact the spherical ball during the operation of the fluid distribution for correction.
17. 17 A fluid distributor for correction co or that set out in claim 1, characterized in that it includes a capsule having a cylindrical cavity that covers the hole, the capsule has means for tightly sealing the tip means.
18. A correction fluid distributor as set forth in claim 17, characterized in that the means for tightly sealing the tip means have a seal at 0 placed on the inner wall of the cylindrical cavity of the capsule.
19. A correction fluid distributor as set forth in claim 2, characterized in that each plurality of flanges has an outer facing surface and subsequently positioned to contact a front surface and internally formed in the tubular passage, ridges formed of a sturdy material, and surfaces facing externally and internally are placed relatively with one another where the flanges are flexed internally from their initial position, as the valve member is forced towards the rear and the valve member moves frontally and that the flanges return to their initial position so as to form the means for tilting the valve member to contact the spherical ball.
20. A correction fluid distributor as set forth in claim 19, characterized in that each of the outer surfaces of the flanges has an arcuate surface.
21. A correction fluid distributor as set forth in claim 20, characterized in that the inner surface of the tubular passage has an arcuate surface.
22. 22. A correction fluid distributor as set forth in claim 19, characterized in that the valve member is made of strong plastic material.