Boot shape retainer and a suspending device therefor

Information

  • Patent Grant
  • 6622331
  • Patent Number
    6,622,331
  • Date Filed
    Tuesday, June 5, 2001
    23 years ago
  • Date Issued
    Tuesday, September 23, 2003
    21 years ago
  • Inventors
  • Original Assignees
  • Examiners
    • Stashick; Anthony D.
    Agents
    • Armstrong, Westerman & Hattori, LLP
  • CPC
  • US Classifications
    Field of Search
    • US
    • 012 1142
    • 012 1144
    • 012 1146
    • 012 1148
    • 012 1152
    • 012 1154
    • 012 1162
    • 012 1164
    • 012 1166
    • 012 1168
    • 012 1172
    • 012 1174
    • 012 1195
    • 012 1235
    • 012 128 C
    • 211 34
    • 211 37
    • 211 38
  • International Classifications
    • A43D500
    • A43D300
    • A43D314
    • Term Extension
      14
Abstract
A boot retainer can store boots without losing the shape. The retainer includes inner pads capable of moving to conform to the interior surface at two or more points of the boot of different sizes, and also includes a hook for suspending the retainer together with the boot.
Description




TECHNICAL FIELD




The present invention relates to a boot shape-retainer and a suspending device for keeping the shape of a boot.




BACKGROUND ART




Boots, particularly high boots are soft and flexible to be readily collapsed when placed in shoe shelves or stored in other places. In order to prevent the collapsing, it has been proposed to insert a filling into the boot or to grip the upper end of the boot and hang it upside down. However, the insertion of the filling becomes troublesome for the high boots and sees no practical merit. Although the upside-down hanging of the boot with the use of a grip is suitable for easy boot storing, it causes a certain deformation of the boot and leave creases on the gripped end of the boot.




DISCLOSURE OF THE INVENTION




In view of the above problems, the present invention has been contemplated to provide a boot shape retainer and an associated device which is capable of assuring easy daily boot maintenance while hanging the boot without causing any undesired boot deformation. The boot shape retainer in accordance with the present invention is designed to have inner pads


2


movable to conform to a boot


1


at two or more points around the interior circumference of the boot, and a hook


3


connected to the inner pads and adapted to be engaged with a suspending device for suspending the boot shape retainer. Thus, the boot can be easily suspended simply by placing the inner pads into the boot and can be kept suspended without losing its shape. Therefore, it is easy to make a daily boot maintenance without losing the shape of the boot.




Further, when the inner pads


2


are spring-loaded, it is possible to restore the shape of the boot soaked in the rain or smooth wrinkles of the boot.




When the inner pads


2


are pivotally supported to the opposite ends of a link


2


A, the boot receives less contacting pressure and is therefore capable of retaining soft boot or wet boot without losing its shape.




When using pneumatic pressure for holding the boot, it is easy to avoid deformation of the boot and to restore the original shape by regulating the pressure.




Further, the hook


3


allows the boot shape retainer to be suspended to a stand as retaining the shape of the boot


1


, and is also utilized to be engaged with a rail or the hanger in the shoe cupboard for storing the boot therein or engaged with a suitable member to be displayed in a shoe counter.




When the stretcher rod


4


is utilized, the retainer inserted in the boot can make the boot self-standing without requiring the stand, enabling the boot to be stored in shelves or suitable space as being kept standing. Further, since the boot can be handled by the sole, it is easy to engage the boot with a supporting structure at a high location, facilitating the boot storage at the high place in the house or the boot display at the high place in the shoe counter.




Further, when combined with the movable stand


7


, the retainer can hold the boot


1


in a desired space.




When the furniture


51


such as the shoe locker is provided with a hanger


52


for suspending the retainer therein, the boot


1


can be neatly stored in the furniture without losing its shape by the inner pads inserted therein.




The furniture


51


is only required to add the hanger


52


, the boot shape retainer can be easily adapted to the existing furniture without largely modifying the structure of that furniture and without detracting from the appearance of furniture.




Vertical adjustment for the position of suspending the boot can be made by adjusting the corresponding position of the brackets or braces supporting the partition


56


for the shoe cupboard, and the mounting position of the same to the side plates


57


of the locker.




When the boot shape retainer is incorporated in the locker, it is preferred to provide a pair of hangers on a lower surface of the partition at lateral opposite ends near the side plates. Thus, a long coat frequently taken together with the boot can be nicely stored in the locker while leaving the hem of the coat free from the boot


1


. When the two boot shape retainers (A) are held suspended from the one hanger


52


, the front end of the hanger


52


is preferred to be spaced from the interior wall of the furniture


51


for storing the long coat with its hem kept free from the boot.




When the hanger


52


are foldably or removable mounted to the side plate


57


, the furniture can make the use of a wide interior space when not utilized for storage of the boots.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is a perspective view of a first embodiment of the present invention;





FIG. 2

is a schematic view showing the use of the above;





FIG. 3

is a perspective view of a second embodiment of the present invention;





FIG. 4

is a schematic view showing the use of the above;





FIG. 5

is a perspective view of a third embodiment of the present invention;





FIG. 6

is schematic view showing the use of the above;





FIG. 7

is a perspective view of a fourth embodiment of the present invention;





FIG. 8

is schematic view showing the use of the above;





FIG. 9

is a perspective view of a fifth embodiment of the present invention;





FIG. 10

is a top view of the above;





FIG. 11

is schematic view showing the use of the above;





FIG. 12

is a perspective view of a sixth embodiment of the present invention;





FIG. 13

is a perspective view showing a stand in accordance with the present invention;





FIG. 14

a perspective view showing an example in which the stand is configured into a container box;





FIG. 15

is a schematic view showing an embodiment in which a spring is added to the links;




FIGS.


16


(


a


),


16


(


b


), and


16


(


c


) are a plan view of the link, a plane view of the spring, and a front view of the hook of the above;





FIG. 17

is a schematic view showing a mounting location of the retainer to the furniture;




FIGS.


18


(


a


) and


18


(


b


) are perspective view of a hanger for suspension of the retainer, respectively shown in an exploded condition and in an assembled condition;





FIG. 19

is a schematic perspective view of another hanger for mounting the retainer to the furniture;





FIG. 20

is an exploded perspective view of a brace for fixing a pipe hanger to a partition;





FIG. 21

is schematic view partly in section showing the connection of the brace to the partition.











MODE FOR CARRYING OUT THE INVENTION





FIG. 1

shows a boot shape retainer (A) in accordance with a first embodiment of the present invention which includes a U-shaped spring carrying inner pads


2


at opposite ends of the spring. The spring may be made of a metal, plastic, bamboo or the like material. More than two inner pads


2


may be provided as necessary. The inner pad


2


is made of an elastic resin or resin coated metal sheet so as to be harmless to an interior of a boot


1


.





FIG. 1

shows a condition in which forces are applied from arrowed directions to the spring. Upon releasing the forces, the spring expands to press the inner pads against the interior of the boot


1


, thereby holding the boot by the spring force. The inner pads are arranged to have the opposite outer faces spaced slightly greater than the inside diameter of the boot


1


, when the spring receives no external force. Thus, after placing the inner pads


2


inside of the boot


1


by deforming the spring inward and subsequently releasing the spring, the inner pads are caused to be pressed against the interior of the boot


1


, as shown in FIG.


2


. In this condition, the boot


1


may be left stood on the floor or may be stored in a shoe cupboard as being suspended from a hanger or rail inside of the shoe cupboard by engaging a hook


3


at the upper end of the spring, i.e., the retainer (A). Further, the boot


1


may be suspended from a stand


7


as will be explained later.





FIG. 3

is a perspective view showing a boot shape retainer in accordance with a second embodiment of the present invention which includes a pair of arcuate inner pads


2


that are pivotally connected by means of links


2


A and


2


B so as to be movable relative to each other, as shown in FIG.


4


. When one of the inner pads


2


are lifted relative to the other pad, both pads are pivoted about pivot axes of the links


2


A and


2


B so as to reduce a lateral distance between the inner pads than the inside diameter of the boot


1


, allowing the inner pads to be placed inside of the boot


1


. After releasing the lifted pad


2


, it is caused to fall by its own weight to expand the distance between the pads, thereby pressing both the inner pads against the interior of the boot


1


. Thus, the boot is held by the retainer by frictional engagement of the pads with the inner surface of the boot or by engagement of the pads with turn-up ends at the upper brim of the boot and can be therefore suspended or retained by the retainer (A). The arcuate pad may be formed on its exterior with a natural or synthetic leather, an elastic resin coating, or a brush to give an anti-slip finish thereto.




In the illustrated embodiment, the upper link


2


A is configured to have a length slightly greater than the lower link


2


B to be well suited for the actual boot configuration that the upper boot end has a greater inside diameter than the lower section. However, the links


2


A and


2


B may be configured to have the same length. Either or both of the links


2


A and


2


B may be spring-loaded to urge the inner pads


2


against the interior of the boot


1


, for example, by placing a torsion coil spring around the corresponding pivot axis of the link.




In the illustrated embodiment of

FIGS. 3 and 4

, one of the upper and lower links


2


A and


2


B may be eliminated. For example, when the upper links


2


A are removed, the lower links


2


B are responsible for pivotally supporting the inner pads


2


so that the inner pads can pivot at its lower end to be capable of inclining outwardly by their own weights, developing sufficient force of retaining the boot. Further, instead of joining the inner pads at their lateral opposite ends by the links, it is equally possible to join the inner pads at their lateral center by the upper and lower links


2


A and


2


B or only by the lower link


2


B.




In

FIG. 3

, the hook


3


is secured to one of the pads at its upper end, while a release lever


5


is secured to the upper end of the other pad


2


. When the release lever


5


is used to lift the corresponding pad


2


, the other inner pad


2


is disengaged from the boot and is lowered by its own weight, which makes it easy to remove the retainer (A) out of the boot


1


.





FIG. 5

shows a boot shape retainer (A) in accordance with a third embodiment of the present invention which utilizes a conical core


2


C which is held between two or more inner pads


2


and is vertically slidable relative to the pads. In conformity with the conical core, each of the inner pad is formed in its surface with a downwardly flared groove


2


D receiving a corresponding portion of the core. The inner pads


2


are interconnected at their upper ends so as to move laterally towards and from each other. The core


2


C is provided at its upper end with a hook


3


. The inner pads


2


are interconnected by means of an axle


2


H which is slidably held by knobs


2


G provided at the upper ends of the inner pads


2


, respectively. When the retainer (A) is picked up by gripping the knobs, the inner pads


2


are caused to move upward relative the core


2


C and accordingly move close to each other, as shown in

FIG. 6

, so as to be ready for being placed inside the boot


1


. After the retainer (A) is released within the boot


1


, the inner pads


2


are lowered relative to the core


2


C by their own weights, thereby allowed to expand laterally for pressed engagement with the interior of the boot


1


.




Referring to

FIG. 7

, there is shown a boot shape retainer (A) in accordance with a fourth embodiment of the present invention which is similar to the second embodiment except that the link


2


A and


2


B is composed of two swiveled sub-links


2




a


and


2




a


(


2




b


and


2




b


) which are pivotally interconnected. Although the inner pads


2


are connected at their lateral center to the links


2


A and


2


B in the illustrated embodiment, they may be connected to the links


2


A and


2


B at their lateral opposite ends, in a similar manner as shown in FIG.


3


. In this embodiment, the retainer (A) is contracted as indicated by phantom lines in

FIG. 8

, simply by lifting the inner pads


2


and is subsequently placed into the boot


1


. After being released, the inner pads are caused to return by their own weights to a position, as indicated by solid lines, for pressed contact with the interior of the boot


1


. Thus, the boot


1


is held by the retainer (A).





FIGS. 9

to


11


show a boot shape retainer in accordance with a fifth embodiment of the present invention which utilizes a pair of semi-cylindrical inner pads


2


interconnected by means of upper and lower links


2


A and


2


B. Each of the semi-cylindrical inner pads has arcuate slots


2


K and


2


L respectively in a top face


2


E and a bottom face


2


F. The upper link


2


A has its opposite ends slidably engaged into the slots


2


K in the top faces of the inner pads


2


, while the lower link


2


B has its opposite ends slidably engaged into the slots


2


L in the bottom faces of the pads


2


such that the inner pads


2


are movable towards and away from each other. The links


2


A and


2


B extend to cross with each other, as shown in FIG.


10


. Each of the slots


2


K and


2


L extends along an arcuate path so that the retainer (A) contracts and expands smoothly as the links are manipulated to rotate about a vertical axis. In operation, a hook


3


projecting from the upper link


2


A is utilized to rotate the link


2


A in a direction of contracting the retainer (A), i.e., moving the inner pads close to each other, as indicated by phantom lines in

FIG. 11

, after which the inner pads


2


are placed into the boot


1


. Then, the hook


3


is again utilized to rotate the link


2


A and accordingly the lower link


2


B in the reverse direction, thereby moving the inner pads outwardly, as indicated by solid lines in the figure, for pressing the inner pads against the interior of the boot


1


and therefore holding the boot


1


.





FIG. 12

shows a boot shape retainer (A) in accordance with a sixth embodiment of the present invention which utilizes an inflatable bag defining on its exterior a plurality of inner pads


2


for pressed contact with the interior of the boot


1


. The bag is made of an elastic material and is supplied with a compressed gas such as the air through a valve


6


and is formed at its upper end with a hook


3


.




In any of the embodiments, the retainer may be provided with a vertically extensible stretcher rod


4


of which length is adjusted to make the lower end of the rod in abutment against the inner bottom of the boot


1


. When the retainer A is inflated by a fluid, it may be shaped into a doughnut with a center opening through which the stretcher rod


4


extends. Further, the inner pads


2


utilized in any of the embodiment may be designed to give a cylindrical contour having a diameter which is greater towards its upper end such that the inner pads


2


can fit close to the upper wide boot


1


for supporting it at an increased contact area.





FIGS. 13 and 14

show the stand


7


for suspending the retainer A. The stand


7


of

FIG. 13

is configured to make a horizontal adjustment of a foot


9


by means of an adjustor


8


and to make a height adjustment of a pole


11


by means of an adjustor


10


. The pole


11


is provided at its upper end with a hanger


12


for hanging engagement with the hook


3


of the retainer A. Stoppers


13


are formed on the opposite ends of the hanger


12


.

FIG. 14

shows a container box


14


which is made of a paper, plastic, wooden material, or a thin metal to incorporate the hanger


12


. The container box


14


itself functions as the stand


7


and can be wrapped into a makeup box. A lid


14




a


may be optionally provided.





FIG. 15

shows a seventh embodiment of the present invention which is identical to the embodiment of

FIG. 7

except for an addition of a spring


20


acting on the links


2


A and


2


B to constantly bias the inner pads


2


against the interior of the boot


1


. Although the spring


20


is provided to act on the upper links, it may act on the lower links or two springs may be provided to act on the upper and lower links, respectively. The inner pads


2


are designed to have a smoothly curved and upwardly flared outer surface in conformity with the upper inside configuration of the boot


1


. The outer surface of the pad may have a non-slip finish as necessary.




The inner pad


2


is formed on its rear with upper and lower bearing holes


30




a


and


30




b


for connection with the hook


3


through the links


2




a


and


2




b


. Numeral


32


designates a pin


32


for supporting the spring


20


. Said pin


32


can be neglected. Numerals


33


and


34


designate axles of the links


2




a


and


2




b


, respectively. Numeral


35


designates a rest on which the spring


2


acts. Numeral


36


designates a stopper for the spring


2


. The inner pads


2


are supported to the hook


3


through the links


2




a


and


2




b


with the axles


33


and


34


being pivotally engaged into the corresponding bearing holes


30




a


and


30




b


. The spring


20


has its center coiled section


20




c


fitted around the pin


32


to have its opposite actuator ends


20




a


and


20




b


pivotally engaged with the rests


35


. Also, the actuator end


20




a


is interposed between stopper fins


36


in a slidable relation thereto. The spring may be balanced spring, torsion spring, or coil spring.




In a normal condition, the inner pads


2


are expanded outwardly. When the knobs


22


at the upper ends of the inner pads are picked up, the inner pads


2


are caused to contract, as indicated by phantom lines in

FIG. 15

, so that they can be placed into the boot


1


. Upon releasing the knobs


22


, the inner pads


2


within the boot are caused to expand due to the weight of the pads and the links as well as the spring bias, thereby being forced into a pressed contact with the interior of the boot


1


and therefore holding the boot. In this condition, the hook


3


can be utilized for engagement with the hanger


12


of the stand


7


or a hanger pipe in the shoe cupboard. With the provision of the spring, the inner pads


2


can be pressed against the boot at a sufficient retaining force, even when the inner pads


2


and the links


2


A and


2


B are made of light weight materials such as aluminum or plastics to be alone responsible for producing less retaining force, or when the boot is rather heavy.




As shown in

FIG. 2

, the stand


7


is utilized to suspend the boot shape retainer (A) holding the boot


1


with the hook


3


engaged with the hanger


12


. The stand


7


can be put in the shoe cupboard or be placed in a corner of a room as the boot stand. In a shoe shop or a department's shoe counter, boots can be displayed as being held by the boot stand


7


. When stocking the boots during a summer season, the boots can be packed into a deep container as being kept upstand with the retainer (A) held therein.





FIG. 17

shows an example when the boot retainer (A) is housed in a locker


51


having clothes hangers in its upper part as a typical furniture. The locker


51


is provided on its inner side plates


57


with a foldable hangers


52


. As shown in FIG.


18


(


a


), a bracket


60


screwed to the side plate


57


has bearing upper and lower holes


62


which receive upper and lower pins


61


of the hanger


52


. In this instance, the bracket


60


is formed with recesses


63


and


64


around the lower bearing hole


62


for engagement with a projection


65


formed adjacent the lower pin


61


. FIG.


18


(


b


) shows one condition in which the hanger


52


projects from the side plate


57


with the projection


65


engaged in the recess


63


. From this position, the hanger


52


can be folded on the side plate (


57


) by being lifted a little and turned about the pins


61


to engage the projection


65


into the recess


64


. The hanger


52


may be fixed rather than being foldable on the side plate. Although the illustrated example shows the two hangers


52


, it is equally possible to a single elongated hanger


52


supporting the two boot shape retainer (A). The hanger may be formed from a pipe member.




When the boot shape retainer is housed in the shoe cupboard


51


having a partition


56


, the hangers


52


may be mounted on opposite lateral sides or on front and rear of the lower surface of the partition


56


. The hangers may be fixed or movably (foldably) supported. Also, each hanger


52


may be designed to suspend the two boot shape retainers (A). Further, the hanger


52


may be provided on a side plate


57


of a space below the partition


56


.




The hanger


52


may be extensible or slidable so as to be drawn out from the furniture


51


for engagement with the boot shape retainer (A). Thereafter, the hanger


52


is put back into the furniture


51


together with the boot shape retainer holding the boot. This facilitates the storage of the boots in to the furniture having a narrowed space below the partition


56


.





FIG. 19

shows an example in which the partition


56


is provided on its bottom with a longitudinal rail


66


along which the hanger


52


is slidable. A slider


76


is provided to slidably support the hanger


52


to the rail


66


. The slider


76


may be short in length but is preferred to have sufficient length and to carry the hanger


52


at its front end, as illustrated, so that the hanger


52


can be drawn out of the furniture


51


. Thus, the boot shape retainers (A) can be held on opposite lateral ends of the hanger


52


to suspend the boots


1


, after which the boots


1


can be easily put into the space simply be being pushed in.




A catch


67


at the front end of the rail


66


is engaged with the front end of the partition


56


and is optionally screwed thereto. A rear catch


69


, is also provided for engagement with the partition


56


, and it can be adjusted to be in match with the length of the partition by engagement of a cap screw


72


into a slot


71


. The rear catch


69


may be optionally screwed to the partition. The cap screw


72


is temporarily held to the rear catch


69


by being threadedly mated with a countersink


75


in the catch. After adjusting the position of the catch


69


, the cap screw


72


is tightened to a nut


77


for fixing the catch to the rail. The catch


69


may be provided on its rear face with an adhesive tape for bonding the partition with a rear wall of the furniture


51


. Thus, the partition


56


could be prevented from wobbling or coming off when the hanger


52


is drawn out.




The rail


66


and the slider


76


may be provided with rollers


73


and


74


for smoothly sliding the hanger


52


. The rear catch


69


may be eliminated. This example is suitable for a case in which the partition


56


is a flash-board to which the hanger


52


is difficult to be directly screwed.





FIG. 20

shows an example in which the partition


56


is a flash-panel having ends to which flash openings


87


are exposed. An associated brace comprises a vertical segment


81


formed at its upper end with a horizontally extending tab


83


for engagement with the upper surface of the partition


56


. Projecting form the segment from portions slightly below the tab


83


are insertion tabs


82


of which vertical dimension is equal to or slightly greater than the corresponding height of the opening


87


. One or more than two insertion tabs


82


may be provided in accordance with the shape and the number of the flash openings


87


. Formed at the lower end of the vertical segment


81


is a U-shaped holder


84


for holding the hanger in the form of a pipe. The brace is formed from a metal or plastic material.




A couple of the braces are used at the opposite ends of the hanger


52


for supporting it to the partition


56


of the shoe cupboard or the like furniture by engaging the tabs


82


at the upper surface of the partition


56


, as shown in

FIG. 21

, and at the same time by pushing the insertion tabs


83


into the flash opening


87


. Thereafter, the hanger


52


in the form of a pipe is supported to the brace with the opposite ends of the pipe retained by the holder


84


. Thus, the hanger


52


can be easily removed when it is not necessary to suspend the boots


1


. The outer face of the brace is flat for contact with the side plate of the furniture (not shown).




The vertical segment


81


of the brace can fill a gap left between the partition and the opposed side plate to thereby prevent the wobbling of the partition


56


. It is noted in this connection that the hook


3


can be utilized for engagement with a rotary hanger


52


provided in a rotary closet as another example of the furniture in addition to the shoe cupboard and the locker, in order to suspend the boots in such rotary closet.




Instead of the insertion tabs


82


, the brace may be provided with a pointed or nailed anchor tab which is capable of being driven into the wood-made partition


56


or the like partition for fixing the brace to the partition.




LIST OF REFERENCE MARKINGS






1


boot






2


inner pad






2


A link






2


B link






2


C core






2


D groove






2


E top face






2


F bottom face






2




a


link






2




b


link






3


hook






4


stretcher rod






5


stand




A retainer






52


furniture






52


hanger



Claims
  • 1. A boot shape retainer comprising:at least one pair of spaced inner pads movable to conform to a boot at two or more points around an interior circumference of an upper end of the boot, wherein said inner pads are pivotally supported at opposite ends of a link; and a hook is connected to the inner pads and adapted to be engaged with a suspending device; and said link comprises a pair of sub-links, with one end of each sub-link being pivotally connected directly to an inner pad and the opposite end being pivotally connected together, by a common pin passing through the hook and one end of each sub link, to the opposite end of the other sub-link; and wherein, when either of said inner pads is lifted relative to the other, the distance therebetween is reduced to enable insertion into the upper end of the boot, and after insertion, the weight of a pad causes the same to move outwardly to contact the interior circumference of the upper end of the boot to frictionally engage and support the boot.
  • 2. A combination of a boot shape retainer as recited in claim 1 and a suspending device, said suspending device including a slidingly height adjustable stand for engaging with said hook for suspending the boot shape retainer.
  • 3. A combination of a boot shape retainer as recited in claim 1 and a suspending device, whereinsaid suspending device includes a hanger adapted to be secured on furniture such as a locker or a shoe cupboard and to be engaged with said hook for suspending the boot shape retainer.
Priority Claims (4)
Number Date Country Kind
2000-241024 Aug 2000 JP
2000-200614 Jul 2000 JP
2001-077299 Mar 2001 JP
2001-000742 Feb 2001 JP
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Number Name Date Kind
1406276 Novitzky Feb 1922 A
1989597 Johnston Jan 1935 A
2025173 Meyer Dec 1935 A
2105395 Baas Jan 1938 A
2270936 Doering et al. Jan 1942 A
3229314 Hyams Jan 1966 A
3276053 McKesson Oct 1966 A
3965515 Moberly Jun 1976 A
4185347 Yang Jan 1980 A
4254524 Okui Mar 1981 A
4953715 Celli Sep 1990 A
5224607 Koresko Jul 1993 A
5294007 Edmondson Mar 1994 A
5423435 Pollard et al. Jun 1995 A
5446936 Barger Sep 1995 A
6119871 Mengel Sep 2000 A
6266837 Nord Jul 2001 B1
Foreign Referenced Citations (5)
Number Date Country
72 15 879 Jul 1972 DE
38 37 820 May 1990 DE
3837820 May 1990 DE
41 16 599 Nov 1992 DE
WO 9706717 Feb 1997 WO
Non-Patent Literature Citations (2)
Entry
Japanese Patent Laid-Open No. 9-10089 (Jan. 14, 1997) * English translation.
Japanese Patent Laid-Open No. 10-113497 (May 6, 1998) * English translation.