Refrigerator door mounted water dispensing assembly

Information

  • Patent Grant
  • 6574984
  • Patent Number
    6,574,984
  • Date Filed
    Thursday, February 7, 2002
    22 years ago
  • Date Issued
    Tuesday, June 10, 2003
    21 years ago
Abstract
A portable water dispensing module is mounted to a refrigerator door inner liner. The liner has side walls with aligned vertically spaced module supports. The water dispensing module comprises a reservoir having a fill chamber located above a main reservoir. The fill chamber has a lid that has an opening closed by a cap. The reservoir supports the fill chamber and has side walls with anchoring supports that releasably and matingly engage with the module supports on the liner side walls to mount the water dispensing module against the liner walls. A lower recessed portion of the front wall of the reservoir protects a spigot, mounted into the recess, from inadvertent contact with a user. The reservoir further includes recessed handle portions on the side walls located forward of the refrigerator door liner side walls and below the fill chamber to facilitate the portability of the water dispensing module from the refrigerator door. The combined use of the fill chamber with the reservoir and the use of a filter in between permits for a relatively large volume of water to be stored in the water dispensing module on the inside of the refrigerator door without the use of any plumbing water lines having to pass through the refrigerator door. Further, when the door is closed, the water contained within the water dispensing module is chilled to provide a supply of filtered chilled water for a user.
Description




TECHNICAL FIELD OF THE INVENTION




The present invention relates to a refrigerator door mounted portable water dispenser removably mounted to the inner liner of the refrigerator door and accessible for dispensing water when the door is open.




BACKGROUND OF THE INVENTION




Modern day refrigerators typically include door mounted modules, such as bins, drawers, trays or shelves used to store numerous items which are handy to a user. In the past several years a number of schemes or assemblies have been introduced to provide greater flexibility by enabling the user to selectively mount different modules at numerous locations on the inner liner of the door, particularly on the fresh food compartment door. Usually, the portable mounting involves ribs, recesses, apertures or bosses mounted along opposing side support walls of the door liner and corresponding mating or anchoring supports on the drawers or bins.




Examples of refrigerator door module mounting assemblies are shown in U.S. Pat. No. 5,346,299 issued Sep. 13, 1994 to Werkmeister et al; U.S. Pat. No. 3,220,558 issued Nov. 30, 1965 to Olsson; U.S. Pat. No. 5,685,624 issued Nov. 11, 1997 to Lee; U.S. Pat. No. 3,227,502 issued Jan. 4, 1996 to Roberts; U.S. Pat. No. 3,682,521 issued Aug. 8, 1972 to Kesling; U.S. Pat. No. 3,807,822 issued Apr. 30, 1974 to Amore; U.S. Pat. No. 4,859,010 issued Aug. 22, 1989 to Jeziorowski; U.S. Pat. No. 4,908,544 issued Mar. 13, 1990 to Lau; U.S. Pat. No. 5,004,305 issued Apr. 2, 1991 to Montuoro et al.; U.S. Pat. No. 5,042,398 issued Aug. 27, 1991 to Lau et al.; Re. Pat. No. 34,377 reissued Sep. 14, 1993 to Wilkins et al.; U.S. Pat. No. 5,322,366 issued Jun. 21, 1994 to Revlett et al.; U.S. Pat. No. 5,226,717 issued Jul. 13, 1993 to Hoffman; U.S. Pat. No. 5,370,455 issued Dec. 6, 1994 to Sedovic et al.; U.S. Pat. No. 5,375,924 issued Dec. 27, 1994 to Pohl et al.; U.S. Pat. No. 5,567,029 issued Oct. 22, 1996 to Haenisch et al.; and U.S. Pat. No. 6,231,146 issued May 15, 2001 to Dang.




While door shelves and bins are utilized to support many items such as a water jug resting in or on the shelf, refrigerators having a water dispensing feature require a water dispenser incorporated with the door that typically extends through the door providing access to a user from the outer panel of a closed refrigerator door. These through the door mounted water dispensers typically involve placing a water line into the door and connecting the water line with a faucet or valve actuated by a lever accessible to a user from outside the door. The costs associated with the plumbing connections and door construction for a through the door mounted water dispenser are much higher than simply buying a water jug and placing it onto a shelf in the refrigerator.




Portable water dispensers or jugs have been filled with water and placed on a shelf within the refrigerator fresh food compartment or, for much smaller jugs, on a door shelf. The jugs used on the door shelf or bin are much smaller due to the space requirements of the door shelf and non-tipping requirements of the jug placed on the door shelf. However, due to the weight of a filled water jug located on the door shelf, care must be taken when closing the door in order not to upset the jug and cause spillage. For larger volume water jugs, they must be placed on a shelf within the refrigerator cabinet. Some of these jugs include a filter for removing un-wanted chemicals from the water poured into the jug. However, jugs placed on a shelf in the refrigerator cabinet typically occupy a considerable amount of space that could be otherwise used for food storage and are heavy to load onto the shelf.




There is a need for a water dispenser that does not require through the door plumbing connections, has a relative large volume, is portable, and is adapted for secure removable mounting to the refrigerator door thereby being less prone to spillage and freeing up space within the fresh food compartment for storage of other food items.




SUMMARY OF THE INVENTION




The present invention relates to a refrigerator door mounted water dispensing apparatus comprising a water dispensing module portably mounted relative to the inner liner of a refrigerator door. The refrigerator door has an outer shell and an inner liner. The inner liner has at least two spaced apart liner side walls and a rear liner wall extending between the liner side walls that defines a liner recess. The liner side walls have aligned and vertically spaced module supports. The water dispensing module is at least partially receivable within the liner recess and has a reservoir defined by a front wall portion, opposing side wall portions, a rear wall portion and a bottom wall portion. Each of the reservoir side wall portions has at least one anchoring support for releasably mating with the module supports of the liner side walls to mount the water dispensing module on the refrigerator door with the reservoir rear wall portion adjacent the liner rear wall and the reservoir side wall portions adjacent the corresponding liner side walls. The reservoir front wall portion extends across the refrigerator door between the liner side walls. The water dispensing module further has a spigot that is mounted to the reservoir front wall portion adjacent the reservoir bottom wall portion to permit for the dispensing of the water from the reservoir when the refrigerator door is open.




The releasable mating of the water dispensing module with the liner permits for the water dispenser to be releasably mounted directly to a refrigerator door. Further, the spigot permits for water to be dispensed from the reservoir when the door is opened. Since the water dispensing module is an independent unit mounted to the inside door liner, there is no requirement for plumbing a water line in the door and for the spigot to be accessible from outside the refrigerator door as in a through the door dispenser. Further, the reservoir is readily accessibly when the door of the refrigerator is open hence the water contained within the reservoir will provide a supply of chilled water for a user.




In a preferred construction, the refrigerator liner side walls each have has a series of liner module supports vertically spaced along each of the liner side walls which allow for the water dispensing module to be inserted vertically relative to the refrigerator door. As a result, the water dispensing module may be located at a desired height allowing it to be readily filled while still mounted on the refrigerator door or to be easily removed from the refrigerator door for filling at a remote location.




Preferably, the front wall portion of the reservoir has a recess located adjacent to the reservoir bottom wall into which the spigot is mounted substantially rearwardly of the front wall. This rearward mounting of the spigot relative to the front wall portion prevents the spigot from coming into contact with other food articles within the food chamber when the door is closed. Further, there is less chance of a user catching accidentally touching the spigot when accessing food articles within the fresh food compartment. The spigot further comprises a stem that is mounted through the reservoir front wall portion, a valve and a lever for opening and closing the valve. The majority of the spigot is located rearwardly of the front wall portion and only a portion of the lever projects forward of the front wall portion to allow it to be accessed readily by a user for dispensing fluids. Since the spigot is located adjacent the bottom front wall, when the lever is activated, the valve opens and water is dispensed by gravity from the reservoir through the stem of the spigot and drops from the spigot into a cup or other collecting vessel utilized by a user.




To facilitate the portability of the present invention, each of the reservoir side wall portions has a recessed handle located in a leading side wall portion that extends forward of the corresponding liner side wall. The recessed handle projects back into the reservoir and permits the user to insert her fingers into the handle portions and allow her thumbs to wrap around the reservoir front wall portion to permit the user to readily mount or remove the water dispenser from the refrigerator door when the door is in an open position. Additionally, the construction of the recessed handle portions also provides for a support shoulder where each handle portion projects into the reservoir. The shoulders are preferably relatively flat surfaces that extend along a horizontal plane inward from the opposite reservoir side wall portions. The shoulders are adapted to support a fill chamber mounted into an upper portion of the reservoir. The fill chamber preferably carries a filter and provides an upper chamber in which water is initially contained. The water passes through the filter attached between the fill chamber and the reservoir and the filtered water is held by the lower or main portion of the reservoir. It should be understood that the user may fill the fill chamber up and as water filters into the lower chamber may then continue to fill the fill chamber so that the entire reservoir and fill chamber is completely filled with water. When the user then dispenses water from the spigot, additional amounts of water located in the fill chamber passes through the filter by gravity into the lower reservoir. Consequently, the volume of filtered water supplied by the water dispensing module is relatively large when compared to jugs placed in the door shelves or trays.




The water dispensing module preferably further includes a lid that fits over the fill chamber and closes off the fill chamber. The lid preferably has a rear top wall raised platform portion and a forward platform portion that is lower than the rear platform portion. In other words, the rear platform portion which is adjacent the rear liner wall is raised relative to the forward portion. The forward portion preferably further includes a cap that closes an access opening. The cap may be removed from the forward platform portion to facilitate pouring of water either from a faucet when the module is placed beneath a faucet or from a container when the dispensing module is left mounted within the refrigerator door liner when filled. Any spillage associated with this pouring procedure runs off the rear platform into the forward platform and into the access opening.











BRIEF DESCRIPTION OF THE DRAWINGS




For a better understanding of the nature and objects of the present invention reference may be had to the following detailed description when taken in conjunction with the accompanying diagrammatic drawings wherein:





FIG. 1

is a perspective view of a refrigerator having a door mounted portable water dispensing apparatus in accordance with a preferred aspect of the present invention;





FIG. 2

is an enlarged partial perspective view of the preferred water dispensing module mounted to the liner;





FIG. 3

is an exploded view of the component parts of the water dispensing module;





FIG. 4

is a front sectional view of the water dispensing module; and,





FIG. 5

is a side sectional view showing the interconnection between the water dispensing module and the refrigerator door liner.











DETAILED DESCRIPTION OF EMBODIMENTS




Referring now particularly to

FIG. 1

, there is shown a refrigerator


10


of the top mount type where the cabinet


11


encloses a freezer compartment


12


mounted above a fresh food compartment


13


. The compartments include front access openings which normally are closed by hinged doors


14


and


15


, respectively. Typically drawers


16


and shelves


17


are mounted in the fresh food compartment to support articles to be refrigerated. The freezer may have a shelf


18


to enhance the storage capability and some models may include an automatic ice maker


19


.




The fresh food compartment door


15


includes an outer shell or casing


20


and an inner liner


21


. The space between the outer shell


20


and inner liner


21


is filled with a suitable insulation material, such as, for example, a body of foamed in place insulation. A gasket (not shown) extends around the periphery of the door to seal against air leakage when the door is closed.




Referring to

FIGS. 1 and 2

, the inner liner


21


has a rear liner wall


22


, a bottom wall (not shown), a top wall


23


, liner side walls


24


,


25


and a liner intermediate wall


26


(also considered a side wall). The intermediate wall


26


is parallel to the side walls


24


,


25


and is spaced between them. The top, bottom, side and intermediate liner walls extend forward from the rear wall


22


to form liner recesses


27


,


28


in the liner which face into and become part of the fresh food compartment


13


when the door


15


is closed. More particularly, the walls


24


,


26


, along with the other walls of the liner, define a first recess


27


while the walls


25


,


26


, along with the other walls of the liner, define a second recess


28


. Thus each of the walls


24


,


25


and


26


is a side wall of a recess. It will be understood that the fresh food compartment doors of some smaller size refrigerators and of many side-by-side refrigerators do not include an intermediate wall


26


and the door liner has only one recess.




For storage of items on the door


15


, a permanent shelf


29


(

FIG. 1

) is mounted across the bottom of the door


15


to store tall items. Also each of the side walls


26


,


27


,


28


is provided with a series of vertically aligned and spaced apart module supports or, as shown in the preferred embodiment, supporting ribs


30


. Both sides of the intermediate side wall


26


are provided with ribs so that each side wall of each of the recesses


27


,


28


has a series of ribs. The ribs


30


on each side wall are aligned with the ribs on the facing side wall. While the ribs


30


are aligned across both recesses


27


,


28


, it will be understood that such alignment from one recess to the other is not necessary.




Each of the ribs


30


in this preferred embodiment, as best seen in

FIGS. 2 and 5

, extends forward from the liner rear wall


22


and terminates in a distal end or tip


31


. The top wall


32


of each rib is generally horizontal and includes an upwardly tab


33


proximate the distal end


31


. Each rib has a bottom wall


34


including a horizontal portion or section


35


adjacent the liner rear wall


22


. The preferred construction of the ribs is disclosed in detail in the aforementioned U.S. Pat. No. 5,346,299.




Referring to all the Figures, a number of storage modules, illustrated by bins


40


, are assembled to, or mounted on, the door liner by utilizing the ribs


30


. In addition, a water dispensing module


60


is shown at least partially receivable within the liner recess


27


.




The water dispensing module


60


has a reservoir


62


that has a front wall portion


64


, opposing side walls portion


66


, a rear wall portion


58


, and a bottom wall portion


70


. Each of the reservoir side wall portions


66


has at least one anchoring support


68


for releasably mating with the module supports of the liner side walls to mount the water dispensing module


60


on the refrigerator door with the rear wall portion


58


at least closely adjacent to the rear liner


22


and the side wall portions


66


adjacent to side walls


24


and


26


. In the preferred embodiment shown, at least a portion of the reservoir side walls


66


and the reservoir rear wall portion


68


are shaped or contoured to snugly fit between corresponding liner side walls and the liner rear wall.




The anchoring supports


68


for the water dispensing module


60


are provided adjacent the top portion


98


of the reservoir side wall portions


66


and comprise an upper rail


48


and a lower rail


49


. The rails


48


,


49


extend from adjacent the rear edge of the module side walls


66


toward the front of the module. Each upper rail


48


is formed adjacent the top of the module


60


and, in the illustrative modules the horizontal upper wall


50


is part of the rim around the upper edge of the module


60


. The lower wall


52


of each upper rail


48


is also generally horizontal and is spaced relatively close to the upper wall


50


so that, when a module


60


is assembled to the liner


21


, the lower wall


52


will rest on the upper wall


32


of one liner rib


30


and the upper wall


50


of the upper rail


48


will be spaced below the next higher rib


30


.




In addition, due to the overall height of the water dispensing module


60


being larger than a bin


40


, lower portions of the side wall portions


66


are provided with a protruding boss


80


which is inserted between an additional pair of ribs


30


in the side walls which additional pair of ribs


30


are located below and adjacent to the pair or ribs


30


supporting rails


48


and


49


. As shown in

FIG. 5

the boss


80


rests against the horizontal section


35


of lower wall


34


of the upper rib of the lower pair of ribs


30


.




The water dispensing module


60


is assembled to or mounted on a liner by inserting the module into one of the liner recesses


27


,


28


with the rails


48


,


49


being received between vertically adjacent pairs of ribs


30


. When the tabs


33


are aligned with the recesses


58


,


59


the module is lowered or tilted forward to insert the tabs into the recesses. Boss


80


swings into engagement with wall section


35


of a lower rib


30


to complete the support.




The front wall portion


64


of the reservoir


62


has a forward facing mounting wall


69


recessed a predetermined depth therefrom into which the spigot is mounted at the lower front portion


94


rearwardly of the front wall portion


64


. The spigot


82


comprises a threaded stem


84


which passes through the front wall portion


64


. The stem is held in place by lock nut


85


and a sealing washer


87


. The spigot


82


includes a valve


86


and a lever


88


movable to open and close the valve


86


. Only a portion


91


of the lever


88


projects forward of the front wall portion


66


as best seen in FIG.


5


. Below the spigot


82


, a user may place a cup or other collection device to capture water flowing out through the spigot


82


as a result of gravity fed water flow when the valve


86


is open.




The reservoir


62


is a main reservoir and it is provided with handle portions


90


that are recessed into leading side wall portions


92


and


94


of the reservoir side wall portions


66


. The leading side wall portions


92


and


94


extend forward of the inner liner side walls


24


,


25


,


26


and have a rear wall


93


adapted to lie flush with the forward edges of the liner side walls


24


,


26


. Each of the handle portions


90


projects into the reservoir


62


and defines a horizontal extending flat shoulder


95


(

FIG. 4

) that projects into the reservoir


62


. The handle portions


90


facilitate the mounting and the removal of the water dispensing module


60


from the refrigerator door


15


when the door is open.




The water dispensing module


60


further includes a fill chamber


100


having side walls


102


and a floor


104


with a filter


106


mounted through the floor


104


. The fill chamber


100


is positional in an upper portion


98


of the reservoir


62


with floor portions


104


of the fill chamber


100


resting on and supported by the shoulders


95


defined by the handle portions


90


as can best be seen in FIG.


4


. Hence the recessed handle portions


90


have a dual functionality.




The water dispensing module


60


further includes a lid or cover


110


having a rear platform surface


112


and a forward platform surface


114


. The rear platform surface


112


that is raised relative to the forward platform


114


. This allows for any water spilled water during filling of the dispenser, if still mounted to the door, to flow towards opening


116


in the forward platform


114


. Opening


116


is normally closed by a removable cap


118


.




It will be appreciated that alternative embodiments falling within the scope of the present invention may be apparent to those skilled in the art and accordingly the present invention should not be limited to those embodiments herein described.



Claims
  • 1. A refrigerator door mounted water dispensing apparatus comprising:a refrigerator door having an outer shell and an inner liner having at least two spaced apart liner side walls and a rear liner wall defining a liner recess between the side walls, the liner side walls having module supports spaced vertically along each of said liner side walls; and, a water dispensing module releasably mounted to the refrigerator door and at least partially receivable within the liner recess, said water dispensing module comprising a reservoir having a front wall portion, opposing side wall portions, a rear wall portion and a bottom wall portion, each of the reservoir side wall portions having at least one anchoring support for releasably mating with module supports of the liner side walls to mount the water dispensing module on the refrigerator door with the reservoir rear wall portion adjacent the liner rear wall and the reservoir side wall portions received between, and adjacent to, corresponding liner side walls with the reservoir front wall portion extending across the refrigerator door between the liner side walls, said water dispensing module having a spigot mounted to the reservoir front wall portion adjacent the reservoir bottom wall portion for dispensing water from the reservoir, the reservoir side wall portions each having a leading side wall portion that extends forward of the corresponding liner side wall, the leading side wall portions each having a handle portion recessed into a lower portion of the leading side wall to facilitate mounting and removing of the water dispenser module from the refrigerator door when the door is open, each of the recessed handle portions projecting into the reservoir and defining a shoulder within the reservoir; and the water dispensing module further including a fill chamber having side walls and a floor with a filter mounted through the floor, the fill chamber being insertable into an upper portion of the reservoir with portions of the floor of the fill chamber resting on and supported by the shoulders defined by the recessed handle portions whereby water poured into the fill chamber is collected by the fill chamber and passes through the filter into a lower portion of the reservoir.
  • 2. The refrigerator door mounted water dispensing apparatus of claim 1 wherein the reservoir front wall portion has a forward facing mounting wall recessed a predetermined depth therefrom into which the spigot is mounted to position the spigot rearwardly of the front wall portion.
  • 3. The refrigerator door mounted water dispensing apparatus of claim 2 wherein the spigot comprises a stem mounted through the reservoir front wall, a valve and a lever for opening and closing the valve, and only a portion of the lever projects forward of the reservoir front wall portion.
  • 4. A refrigerator door mounted water dispensing apparatus comprising:a refrigerator door having an outer shell and an inner liner having at least two spaced apart liner side walls and a rear liner wall defining a liner recess between the side walls, the liner side walls having module supports spaced vertically along each of said liner side walls; and, a water dispensing module at least partially receivable within the liner recess, said water dispensing module comprising a reservoir having a front wall portion, opposing side wall portions, a rear wall portion and a bottom wall portion, each of the reservoir side wall portions having at least one anchoring support for releasably mating with module supports of the liner side walls to mount the water dispensing module on the refrigerator door with the reservoir rear wall portion adjacent the liner rear wall and the reservoir side wall portions received between, and adjacent to, corresponding liner side walls with the reservoir front wall portion extending across the refrigerator door between the liner side walls, said water dispensing module having a spigot mounted to the reservoir front wall portion adjacent the reservoir bottom wall portion for dispensing water from the reservoir, said water dispensing module having a fill chamber having side walls and a floor with a filter mounted through the floor, the fill chamber being insertable into an upper portion of the reservoir whereby water poured into the fill chamber is collected by the fill chamber and passes through the filter into a lower portion of the reservoir, and the water dispensing module further comprises a lid that fits over the fill chamber.
  • 5. The refrigerator door mounted water dispensing apparatus of claim 4 wherein the reservoir front wall portion has a forward facing mounting wall recessed a predetermined depth therefrom into which the spigot is mounted to position the spigot rearwardly of the front wall portion.
  • 6. The refrigerator door mounted water dispensing apparatus of claim 5 wherein the spigot comprises a stem mounted through the reservoir front wall portion, a valve and a lever for opening and closing the valve, and only a portion of the lever projects forward of the reservoir front wall portion.
  • 7. The refrigerator door mounted water dispensing apparatus of claim 4 wherein the lid has an opening permitting water to be poured into the fill chamber through the lid and the assembly further comprises a removable cap for closing the opening.
  • 8. The refrigerator door mounted water dispensing apparatus of claim 7 wherein the lid has a rear platform raised relative to a forward platform and the opening is located in the forward platform.
  • 9. The refrigerator door mounted water dispensing apparatus of claim 4 wherein:the modular supports of the refrigerator door comprise a plurality of module supporting ribs projecting inwardly of each of said liner side walls and aligned with a corresponding plurality of ribs projecting inwardly of said other liner side wall; the anchoring support of the water dispensing module comprises a pair of rails projecting outward of each of said reservoir side wall portions adjacent the top of the reservoir and extending from adjacent a rear portion of the corresponding module side wall portion toward the front of said module; and each of said reservoir side wall portions further including a boss projection outward therefrom; whereby said water dispensing module is assembled to said door by sliding said pair of module rails on top of a first pair of adjacent liner ribs and by positioning the boss projection between a second pair of liner ribs located below and adjacent to the first pair of liner ribs to further support the water dispensing module to the door.
  • 10. The refrigerator door mounted water dispensing apparatus of claim 9 wherein the reservoir side wall portions each have a leading side wall portion that extends forward of the corresponding liner side wall, the leading side wall portions each having a handle portion recessed into a lower portion of the leading side wall, each of the handle portions projects into the reservoir and provides a shoulder within the reservoir whereby the handle portions facilitate mounting and removing of the water dispenser module from the refrigerator door when the door is open; and the water dispensing module further including a fill chamber having side walls and a floor with a filter mounted through the floor, the fill chamber being insertable into an upper portion of the reservoir with portions of the floor of the fill chamber resting on and supported by the shoulders of the handle portions whereby water poured into the fill chamber is collected by the fill chamber and passes through the filter into a lower portion of the reservoir.
  • 11. The refrigerator door mounted water dispensing apparatus of claim 10 wherein the reservoir front wall portion has a forward facing mounting wall recessed a predetermined depth therefrom into which the spigot is mounted to position the spigot rearwardly of the front wall portion.
  • 12. The refrigerator door mounted water dispensing apparatus of claim 11 wherein the spigot comprises a stem mounted through the reservoir front wall, a valve and a lever for opening and closing the valve, and only a portion of the lever projects forward of the reservoir front wall portion.
  • 13. The refrigerator door mounted water dispensing apparatus of claim 9 wherein the lid has an opening permitting water to be poured into the fill chamber through the lid and the assembly further comprises a removable cap for closing the opening.
  • 14. The refrigerator door mounted water dispensing apparatus of claim 13 wherein the lid has a rear platform raised relative to a forward platform and the opening is located in the forward platform.
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Number Name Date Kind
2982114 Cobb et al. May 1961 A
3069869 Mueller Dec 1962 A
3220558 Olsson Nov 1965 A
3227502 Roberts Jan 1966 A
3682521 Kesling Aug 1972 A
3807822 Amore Apr 1974 A
3914957 Jacobs Oct 1975 A
4306971 Hankammer Dec 1981 A
4514994 Mabb May 1985 A
4859010 Jeziorowski Aug 1989 A
4908544 Lau Mar 1990 A
5004305 Montuoro et al. Apr 1991 A
5042398 Lau et al. Aug 1991 A
5077985 Buchser et al. Jan 1992 A
5156021 St-Gelais et al. Oct 1992 A
D336760 Raunkjaer Jun 1993 S
5226717 Hoffman Jul 1993 A
RE34377 Wilkins et al. Sep 1993 E
5290442 Clack Mar 1994 A
5322366 Revlett et al. Jun 1994 A
5346299 Werkmeister et al. Sep 1994 A
5370455 Sedovic et al. Dec 1994 A
5375924 Pohl et al. Dec 1994 A
5454944 Clack Oct 1995 A
5560393 Clack Oct 1996 A
5567029 Haenisch et al. Oct 1996 A
5685624 Lee Nov 1997 A
5791523 Oh Aug 1998 A
5813246 Oh Sep 1998 A
6003734 Oh Dec 1999 A
6050097 Nelson et al. Apr 2000 A
6079221 Senner Jun 2000 A
6231146 Dang May 2001 B1