Dispensing cap for liquid container

Abstract: A hygienic liquid dispensing system (10) having a cap (50) to close the opening of an inverted liquid container (15) is disclosed. The cap (50) has a lid portion (53) to overlie and sealingly close the opening and an annular skirt portion (55) extending axially away from the lid (53) to surround a portion of the container neck (51). The lid portion (53) is provided with an axially inwardly extending recess (60) including an outer sleeve (62) and an inner plug portion (70) integrally formed with a frangible connection (75) therebetween. A feed tube (45) is dimensioned for forcible insertion into the recess (60) for breaking the frangible connection (75) and separating the plug portion (70) from the sleeve (62) to permit the discharge of liquid from the container (15). A mounting apparatus (25) is also provided to fit on the upper portion (26) of a cabinet (20) and defines an annular ring (24) for supporting the inverted container (15) thereon which also defines a tapered entry portion (27) extending downwardly and inwardly from the annular ring (24) for receiving the inverted container (15) therein.

Description: The invention relates to a hygienic cap for enclosing drinking water or other potable liquid within a substantially rigid liquid dispensing container during storage and transportation thereof and for cooperating with an upstanding feed tube to drain liquid from and admit replacement air into said container when inverted, said container having a substantially cylindrical neck defining a discharge opening, said cap including: a lid portion adapted to overlie and sealingly close said discharge opening and an annular skirt portion extending axially away from said lid portion and adapted to surround and engage an outer axial portion of said container neck, said lid portion having an axially inwardly extending recess formed therein including an annular sleeve portion located generally centrally in said lid portion and integrally connected thereto, said recess being closed and sealed by a closure disposed at the inner end of the annular sleeve portion, the closure being adapted to be opened upon the forcible insertion of said upstanding feed tube into said recess to drain liquid from and admit replacement air into said substantially rigid liquid dispensing container. The invention also relates to a hygienic liquid dispensing system comprising, in combination, a cap adapted to close the discharge opening in the neck of a substantially rigid drinking water or other potable liquid container, said cap having a lid portion adapted to overlie and sealingly close said discharge opening and an annular skirt portion extending axially away from said lid portion and adapted to surround and engage an outer axial portion of said container neck, said lid portion having an axially inwardly extending recess formed therein, said recess including an annular sleeve portion located generally centrally in said lid portion and integrally connected thereto, said recess being closed and sealed by a closure disposed at the inner end of the annular sleeve portion, and an upstanding feed tube dimensioned for forcible insertion into said recess for opening said closure to permit the discharge of liquid from and admission of replacement air into said substantially rigid liquid dispensing container when inverted. Such a cap and system are known from US-A-4 699 188. In this known cap and dispensing system, however, the feed tube, when inserted, ruptures and pierces through a thin closure portion closing off the inner end of the annular sleeve portion. Once such piercing has taken place, the closure remains open and the cap cannot be resealed. It is therefore not practicable to replace a partially empty container with a new one, such as containing either the same liquid or a different liquid, or otherwise to remove a partially filled liquid container. The invention aims to deal with this problem. Accordingly, the hygienic cap, as first set forth above is characterised in accordance with the invention in that the closure comprises: an annular plug and recess sealing portion connected to the inner end of said sleeve portion by a frangible connection and extending axially inwardly therefrom, said plug and recess sealing portion having a substantially centrally disposed internal cavity with a closed inner end for normally closing said recess, said plug and recess sealing portion being adapted to be axially separated from said sleeve portion upon the insertion of said upstanding feed tube into and through said recess, said centrally disposed cavity of said plug and recess sealing portion being formed with internal gripping means therein for temporarily securing said plug and recess sealing portion on said upstanding feed tube when said feed tube is inserted in said recess and said plug and recess sealing portion is separated from said sleeve portion by said upstanding feed tube, said plug and recess sealing portion being formed with an annular surface including sealing means dimensioned for engaging complementary sleeve sealing means formed on an annular surface of said sleeve portion for resealing said recess when said plug and recess sealing portion is drawn into interfitting engagement with said sleeve portion as said upstanding feed tube is withdrawn from said recess. Further according to the invention, the hygienic liquid dispensing system as first set forth above is characterised in that said closure comprises an annular plug and recess sealing portion connected to the inner end of said sleeve portion by a frangible connection and extending axially inwardly therefrom, said plug and recess sealing portion having a substantially centrally disposed internal cavity with a closed inner end for normally closing said recess, said centrally disposed cavity of said plug and recess sealing portion being formed with internal gripping means therein for temporarily securing said plug and recess sealing portion on said upstanding feed tube when said feed tube is inserted in said recess and said plug and recess sealing portion is separated from said sleeve portion by said upstanding feed tube, said plug and recess sealing portion being formed with an annular surface including sealing means dimensioned for engaging complementary sleeve sealing means formed on an annular surface of said sleeve portion for resealing said recess when said plug and recess sealing portion is drawn into interfitting engagement with said sleeve portion as said upstanding feed tube is withdrawn from said recess. A hygienic cap and a hygienic liquid dispensing system and both embodying the invention will now be described, by way of example only, with reference to the accompanying diagrammatic drawings in which: Figure 1 is a framentary side elementation view of the liquid dispensing system including the hygienic cap, with certain portions broken away in sections; Figure 2 is a section taken substantially along the line 2-2 in Figure 1 showing the partial insertion of a water bottle of the hygienic liquid dispensing system; Figures 3a and 3b are fragmentary sections taken substantially along line 3-3 in Figure 2 showing a detachable connection between an adaptor unit of the hygienic liquid dispensing system and an existing water bottle cooler; Figures 4a,4b and 4c are enlarged, fragmentary, side elevation views, partly in section, showing insertion and removal of the feed tube with respect to the hygienic cap in the hygienic liquid dispensing system; and Figure 5 is a fragmentary perspective view showing an alternative adapting unit having a tapered side wall sitting on top of a water cooler housing. While the invention will be described and disclosed in connection with certain preferred embodiments and procedures, it is not intended to limit the invention to those specific embodiments. Rather it is intended to cover all such alternative embodiments and modifications as fall within the scope of the invention as defined in the appended claims. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Turning now to the drawings, there is shown in greater detail, a bottled water cooler 10 including a cabinet 20 of the type having an open-topped cooling reservoir 12 which is disposed to receive the inverted neck of a bottle 15 containing water or the like. Typically, the reservoir 12 and its contents are subjected to temperature control by a refrigeration system and/or a heating system (not shown), in the lower portion of the cabinet 20, and water is taken from the reservoir through a drain pipe 22 and a faucet 13 mounted on a cabinet front panel 14. In the illustrated cooler 10, the front panel 14 is recessed within the cabinet periphery so as to set the faucet 13 back into the cabinet and thus prevent inadvertent contact. In keeping with the invention, a mounting adapter 25 is disposed on the upper portion of the water cooler cabinet 20. To properly support the inverted water bottle, the mounting adapter 25 is provided with an annular ring 24 on its upper portion 26 and in order to properly receive and guide the inverted water bottle 15, the mounting adapter 25 is provided with a tapered entry portion 27 extending downwardly and inwardly from the annular ring 24 on the upper portion 26 of the mounting adapter 25. The entry portion 27 is formed with a lower end 29 having a length greater than the container neck 51, so that substantially all of the weight of the inverted water bottle is supported by the annular ring 24 of the mounting adapter 25 rather than by the water bottle neck. In the illustration of FIG. 1, the mounting adapter 25 is provided with downwardly extending side walls 17 and also includes internal stiffening ribs 28 interconnecting the side walls 17, the raised upper portion 26 and the tapered entry portion 27 so as to support the annular ring 24. As more particularly depicted in FIG. 2, in the preferred embodiment, an annular diaphragm element 41 coupled to the lower end 29 of the entry portion 27 of the mounting adapter 25 sealingly closes the upper portion of the reservoir 12 and supports an upstanding feed tube 45 whose operation is described in greater detail below. In order that the hygienic liquid dispensing system may be retrofitted to existing water coolers, the diaphragm/feed tube configuration described above carries a flexible peripheral member 43 for sealingly engaging and closing the open end of the reservoir 12. To facilitate the retrofitting between the mounting adapter and an existing water cooler having the diaphragm/feed tube connection, a quick disconnect means is provided having bayonet-type tab fittings 33 on the diaphragm and complementary lugs 34 on the lower end 29 of the entry portion 27 of the mounting adapter 25. As shown in greater detail in FIGS. 3a and 3b, one or more of the bayonet-type tab fittings 33 may be provided with centering detent-like dimples 35 for engagement with complementary recesses 36 formed in the upper surface of the lugs 34 to insure proper engagement of the quick disconnect means. It will be understood, of course, that other suitable attachment means may be provided, if desired. Pursuant to another feature of the preferred embodiment, and as depicted in FIGS. 1 and 2, an air filter 30 is provided with a filter element 37, having a filter medium removably fitted on the housing 38 of the filter 30. A conduit 39 is connected to the filter housing 38 and passes via a grommet 47, through the diaphragm element 41, so that air cannot enter the reservoir except by passing through the filter medium. A more detailed description of the filter 30 can be found in U.S. Patent No. 4,834,267, issued May 30, 1989 to Schroer et al. and is hereby incorporated by reference. It will also be appreciated with reference to FIG. 1, that the filter 30 may be conveniently located under the raised upper portion 26 of the mounting adapter 25. In keeping with the invention, a hygienic cap 50 for a liquid dispensing system is shown in FIGS. 4a, 4b and 4c. As is conventional with water bottles, a neck portion 51 defines a discharge opening through which liquid may dispense. In order to seal liquid within the bottle, hygienic cap 50 is provided with a lid portion 53 adapted to overlie and sealingly close the discharge opening defined by the neck 51. Additionally, an annular skirt portion 55 of the cap 50 extends axially away from the periphery of the lid portion 53 and is adapted to surround a portion of the neck 51 so as to sealingly retain contact with the neck portion 51 of the water bottle. As will become more apparent below, the hygienic cap 50 is provided with an axially inwardly extending recess 60 formed integrally with or otherwise connected to the lid portion 53. The axially inwardly extending recess 60 includes a first annular sleeve portion 62 which is located generally centrally in the lid portion 53 and is preferably integrally connected thereto. In keeping with the present invention, a second annular plug portion 70 is connected to the inner end of the first annular sleeve portion 62 and extends axially inwardly therefrom. As shown in the illustrated embodiment, the second annular plug portion 70 is provided with a closed inner end 71 to fully seal liquid within the inverted water bottle. In keeping with another important aspect of the invention, the second annular plug portion 70 is preferably integral with the first annular sleeve portion 62 and is connected thereto through a frangible connection 75 in order to allow the plug portion 70 to be axially separated from the sleeve portion 62 upon the forceable insertion of a feed tube 45 into the inwardly extending recess 60 to facilitate the discharge of liquid from the inverted water bottle. The frangible connection 75 includes an area of the recess which has reduced wall thickness at the inner end of the sleeve 62 where the plug portion 70 is connected thereto. This single piece construction not only reduces assembly time but also avoids separation and loss of the plug portion. To this end, in the preferred embodiment, the cap 50 is formed in a single piece. However, it will be appreciated that a two-piece construction may sometimes be advantageous. In this regard, the multiple pieces may thereafter be assembled in a one-piece configuration either by spin welding, sonic welding, chemical bonding or the like. In order to temporarily secure the plug 70 on the feed tube 45 when the feed tube is inserted in the recess 60, the plug portion 70 is formed with an internal gripping rib 72. In a complementary way, so that the feed tube 45 may retain the plug portion 70 upon insertion of the feed tube into the inwardly extending recess 60, feed tube 45 is provided with an annular groove 42 formed in its outside surface. In order to facilitate proper insertion of the feed tube 45 in recess 60, and proper mating engagement between the gripping rib 72 of the plug portion 70 and the annular groove 42 of feed tube 45, feed tube 45 may be provided with an upper portion 44 of reduced diameter and a tapered annular ramp portion 63 adjacent the annular groove 42 for guiding the annular gripping rib 72 into the annular groove 42. Upon further insertion of the feed tube into the recess 60, the frangible connection 75 is broken, thereby allowing the extension of the feed tube 45 into the neck of the inverted water bottle. In a conventional manner, feed tube 45 is formed with an internal bore 46 and at least one radial inlet 48 communicating therewith to allow the dispensing of liquid from the interior of the inverted water bottle to the reservoir 12 as more fully described in the above mentioned U.S. Patent No. 4,699,188 to Baker et al. As is apparent and in order to allow fluid flow, the inlet 48 is spaced from the end of the feed tube 45 by a distance that is greater than the internal depth of the plug 70. As shown in FIG. 4b, the exterior surface of the feed tube 45 is dimensioned with respect to the interior of the first annular sleeve portion 62 so that a sealing engagement is effected upon insertion of the feed tube 45 into the recess 60 and the inverted water bottle. In keeping with another important aspect of the invention, the hygienic liquid dispensing system is provided with means for resealing the inverted water bottle upon removal of the water bottle from the cooler or, conversely, upon removal of the feed tube from the hygienic cap 50. Upon removal of feed tube 45 from the inverted water bottle 15, annular groove 42 retains the annular plug portion 70 of hygienic cap 50 until the plug portion is fully drawn into the axially inwardly extending recess 60 of lid portion 53. In the preferred embodiment, the plug portion 70 is formed with an outside annular surface dimensioned to sealingly fit within the sleeve portion 62 when the feed tube 45 is withdrawn from the recess 60. For this purpose, the plug 70 is preferably formed with a tapered lead-in section 69 adjacent the frangible connection 75 for guiding the plug 70 into the sleeve 62 when the feed tube 45 is withdrawn from the recess 60. Adjacent its closed end 71, the plug portion 70 is also preferably provided with an annular flange 73 in order to prevent the plug portion 70 from being removed from the hygienic cap 60. In the preferred embodiment, the external annular flange 73 is dimensioned to seat on the inner end of the sleeve 62 when the plug 70 is drawn into the sleeve. Additionally, in order to sealingly engage the plug portion 70 with the first annular sleeve portion 62 of the hygienic cap, plug portion 70 is provided with an external annular recess 77 which sealingly cooperates with a radially inwardly projecting bead 76 of sleeve portion 62. Moreover, this external annular groove/internally projecting bead combination provides a gripping means that will allow the feed tube 45 to mate with and retain the plug portion 70 prior to the plug portion becoming slideably disengaged with respect to the sleeve portion 62. In the preferred embodiment, a hygienic cap 50 is also provided with a line of weakness 80 on the skirt 55 extending toward the lid portion 53 and a pull tab 85 extending axially from the skirt. Pull tab 85 is provided to facilitate manually tearing the skirt 55 along the line of weakness 80 when the cap 50 is removed from the container. Additionally, the cap is formed to receive a protective seal 84 covering the recess 60 to prevent contaminants from entering therein. The protective seal 84 also serves to indicate whether the cap has been tampered with prior to insertion of the feed tube 45 into the recess 60. An alternate embodiment of the invention is illustrated in FIG. 5 wherein the mounting adapter 25 a is designed to be positioned on top of an existing water cooler 10 a having a flat upper surface. The above described hygienic water bottle system having the hygienic cap, feed tube and mounting diaphragm is housed within the cooler 10 a , but is not shown here.

Claims: A hygienic cap (50) for enclosing drinking water or other potable liquid within a substantially rigid liquid dispensing container (15) during storage and transportation thereof and for cooperating with an upstanding feed tube (45) to drain liquid from and admit replacement air into said container when inverted, said container having a substantially cylindrical neck (51) defining a discharge opening, said cap (50) including: a lid portion (53) adapted to overlie and sealingly close said discharge opening and an annular skirt portion (55) extending axially away from said lid portion and adapted to surround and engage an outer axial portion of said container neck (51), said lid portion (53) having an axially inwardly extending recess (60) formed therein including an annular sleeve portion (62) located generally centrally in said lid portion (53) and integrally connected thereto, said recess (60) being closed and sealed by a closure (70) disposed at the inner end of the annular sleeve portion (62), the closure (70) being adapted to be opened upon the forcible insertion of said upstanding feed tube (45) into said recess (60) to drain liquid from and admit replacement air into said substantially rigid liquid dispensing container (15), characterized in that the closure (70) comprises: an annular plug and recess sealing portion (70) connected to the inner end of said sleeve portion (62) by a frangible connection (75) and extending axially inwardly therefrom, said plug and recess sealing portion (70) having a substantially centrally disposed internal cavity with a closed inner end (71) for normally closing said recess (60), said plug and recess sealing portion (70) being adapted to be axially separated from said sleeve portion (62) upon the insertion of said upstanding feed tube (45) into and through said recess (60), said centrally disposed cavity of said plug and recess sealing portion (70) being formed with internal gripping means (72) therein for temporarily securing said plug and recess sealing portion (70) on said upstanding feed tube (45) when said feed tube is inserted in said recess (60) and said plug and recess sealing portion (70) is separated from said sleeve portion (62) by said upstanding feed tube (45), said plug and recess sealing portion (70) being formed with an annular surface including sealing means (77) dimensioned for engaging complementary sleeve sealing means (76) formed on an annular surface of said sleeve portion (62) for resealing said recess (60) when said plug and recess sealing portion (70) is drawn into interfitting engagement with said sleeve portion (62) as said upstanding feed tube (45) is withdrawn from said recess (60). A hygienic cap as defined in claim 1, characterised in that said frangible connection (75) includes an area of reduced wall thickness at the inner end of said sleeve portion (62) where said plug and recess sealing portion (70) is connected thereto, said plug and recess sealing portion (70) being formed with a tapered lead-in section (69) adjacent said frangible connection (75) for guiding said plug and recess sealing portion (70) into interfitting engagement with said sleeve portion (62) when said feed tube (45) is withdrawn from said recess (60). A hygienic cap as defined in claim 1 or 2, characterised in that said plug and recess sealing portion (70) and said complementary sleeve sealing means (76) include an annular groove (77) formed in one of said annular surfaces and an annular bead (76) formed on the other of said annular surfaces, said bead (76) being dimensioned to seat in said groove (77) when said plug and recess sealing portion (70) is drawn into interfitting engagement with said sleeve portion (62). A hygienic cap as defined in claim 2 or 3, characterised in that said plug and recess sealing portion (70) includes an external annular flange (73) formed adjacent the closed end (71) of said plug and recess sealing portion (70), said flange (73) being dimensioned to seat on the inner end of said sleeve portion (62) when said plug and recess sealing portion (70) is drawn into interfitting engagement with said sleeve portion (62). A hygienic cap as defined in any of the preceding claims, characterised in that said skirt portion (55) is formed with a line of weakness (80) extending toward said lid portion (53) and including a pull tab (85) extending axially away from said skirt portion to facilitate manually tearing said skirt portion along said line of weakness when said cap (50) is removed from said container (15). A hygienic cap as defined in any of the preceding claims, characterised by a protective seal (84) disposed to cover said recess (60) to prevent contaminants from entering therein and also serving to indicate if said cap (50) has been tampered with prior to insertion of said feed tube (45) into said recess (60). A hygienic liquid dispensing system comprising, in combination, a cap (50) adapted to close the discharge opening in the neck (51) of a substantially rigid drinking water or other potable liquid container (15), said cap (50) having a lid portion (53) adapted to overlie and sealingly close said discharge opening and an annular skirt portion (55) extending axially away from said lid portion and adapted to surround and engage an outer axial portion of said container neck (51), said lid portion (53) having an axially inwardly extending recess (60) formed therein said recess including an annular sleeve portion (62) located generally centrally in said lid portion (53) and integrally connected thereto, said recess (60) being closed and sealed by a closure (70) disposed at the inner end of the annular sleeve portion (62), and an upstanding feed tube (45) dimensioned for forcible insertion into said recess (60) for opening said closure (70) to permit the discharge of liquid from and admission of replacement air into said substantially rigid liquid dispensing container (15) when inverted, characterized in that said closure (70) comprises an annular plug and recess sealing portion (70) connected to the inner end of said sleeve portion (62) by a frangible connection (75) and extending axially inwardly therefrom, said plug and recess sealing portion (70) having a substantially centrally disposed internal cavity with a closed inner end (71) for normally closing said recess (60), said centrally disposed cavity of said plug and recess sealing portion (70) being formed with internal gripping means (72) therein for temporarily securing said plug and recess sealing portion (70) on said upstanding feed tube (45) when said feed tube is inserted in said recess (60) and said plug and recess sealing portion (70) is separated from said sleeve portion (62) by said upstanding feed tube (45), said plug and recess sealing portion (70) being formed with an annular surface including sealing means (77) dimensioned for engaging complementary sleeve sealing means (76) formed on an annular surface of said sleeve portion (62) for resealing said recess (60) when said plug and recess sealing portion (70) is drawn into interfitting engagement with said sleeve portion (62) as said upstanding feed tube (45) is withdrawn from said recess 60. A hygienic liquid dispensing system as defined in claim 7, characterised in that said frangible connection (75) includes an area of reduced wall thickness at the inner end of said sleeve portion (62) where said plug and recess sealing portion (70) is connected thereto, said frangible connection being adapted to be ruptured and said plug and recess sealing portion (70) axially separated from said sleeve portion (62) upon the forcible insertion of said feed tube (45) into said recess (60) in order to permit the discharge of liquid from said container (15). A hygienic liquid dispensing system as defined in claim 7 or 8, characterised in that said feed tube (45) is formed with an internal bore (46) and a radial inlet (48) communicating therewith, said inlet being spaced from the end of said feed tube by a distance that is greater than the internal depth of said cavity in said plug and recess sealing portion (70). A hygienic liquid dispensing system as defined in any one of claims 7 to 9, characterised in that said internal gripping means (71) includes a radially inwardly projecting annular lip (72) formed on said plug and recess sealing portion (62) and said external gripping means includes an annular groove (42) formed in the tip portion (44) of said feed tube (45). A hygienic liquid dispensing system as defined in claim 10, characterised in that said feed tube (45) is formed with a tapered annular ramp portion (63) adjacent said groove (43) for guiding said tip (44) into said annular lip (72) on said plug and recess sealing portion (70). A hygienic liquid dispensing system as defined in any one of claims 7 to 11, characterised in that said feed tube (45) is dimensioned for close fitting sealing relation with the inside diameter of said recess (60) to prevent leakage of liquid therebetween when said feed tube is inserted into said recess. A hygienic liquid dispensing system as defined in any one of claims 7 to 12, characterised in that said feed tube (45) is formed with a tip portion (44) having a reduced cross sectional diameter for insertion into said internal cavity of said plug and recess sealing portion (70). A hygienic liquid dispensing sytem as defined in any one of claims 7 to 13, characterised in that said feed tube (45) has a tip end (44), a substantially hollow tubular body portion and a base portion, and including mounting means (25) for orienting said feed tube substantially vertically with said tip end (44) pointed upwardly. A hygienic liquid dispensing system as defined in claim 9, characterised in that said radial inlet (48) and said internal bore (46) define fluid passage means for dispensing liquid from said container (15) and for admitting air into said container to displace said dispensed liquid, said fluid passage means being unobstructed by internally or externally disposed valve means to permit the free flow of liquid and air therethrough. A hygienic liquid dispensing system as defined in any one of claims 7 to 15, characterised in that said plug and recess sealing portion (70) and said complementary sleeve sealing means (76) include an annular groove (77) formed in one of said annular surfaces and an annular bead (76) formed on the other of said annular surfaces, said bead (76) being dimensioned to seat in said groove (77) when said plug and recess sealing portion (70) is drawn into interfitting engagement with said sleeve portion (62). A hygienic liquid dispensing system as defined in any one of claims 7 to 16, characterised in that said plug and recess sealing portion (70) includes an external annular flange (73) formed adjacent the closed end (71) of said plug and recess sealing portion (70), said flange (73) being dimensioned to seat on the inner end of said sleeve portion (62) when said plug and recess sealing portion (70) is drawn into interfitting engagement with said sleeve portion (62). A hygienic liquid dispensing system as defined in any one of claims 7 to 17, characterised in that said plug and recess sealing portion (70) is formed with a tapered lead-in section (69) for guiding said plug and recess sealing portion (70) into interfitting engagement with said sleeve portion (62) when said feed tube (45) is withdrawn from said recess (60). A hygienic liquid dispensing system as defined in any one of claims 7 to 18, characterised in that said skirt portion (55) is formed with a line of weakness (80) extending toward said lid portion (53) and a pull tab (85) extending axially away from said skirt portion to facilitate manually tearing said skirt portion along said line of weakness when said cap (50) is removed from said container (15). A hygienic liquid dispensing system as defined in any one of claims 7 to 19, characterised by a protective seal (84) disposed to cover said recess (60) to prevent contaminants from entering therein and also serving to indicate if said cap (50) has been tampered with prior to insertion of said feed tube (45) into said recess (60).

Inventors: BAKER DAVID H, BAKER HENRY E, BAKER JOHN B, BAKER PETER K, DONSELMAN EDWARD H, KATZ RONALD C, BAKER, DAVID H., BAKER, HENRY E., BAKER, JOHN B., BAKER, PETER K., DONSELMAN, EDWARD H., KATZ, RONALD C.
Applicants: ELKAY MFG CO, ELKAY MANUFACTURING COMPANY
Application year: 1989
Main classification: B65B3
IPC codes: B67D3