Adjustable stand apparatus

Information

  • Patent Grant
  • 6186462
  • Patent Number
    6,186,462
  • Date Filed
    Friday, May 7, 1999
    25 years ago
  • Date Issued
    Tuesday, February 13, 2001
    23 years ago
Abstract
An adjustable stand apparatus includes a base member and a top member. The base member includes a left portion and a right portion. Both the left and the right portions include elongated openings. The elongated openings include retaining regions having a first width and first receiving regions having a second width, with the second width being greater than the first width. The elongated openings further include tab portions, which extend into the first receiving regions. The top member also includes a left portion and a right portion. Both the left and the right portions of the top member include first guide portions, which extend from a bottom side of the top member. The first guide portions include an outer width, which is greater than the first width of the retaining regions of the elongated openings. The first guide portions are received in the first receiving regions, and are retained within the retaining regions.
Description




FIELD OF THE INVENTION




The present invention relates to adjustable stand devices, and, in particular, adjustable devices capable of adjusting the viewing, or other, range of a videophone, or similar device, in a vertical motion.




BACKGROUND OF THE INVENTION




In today's increasingly electronic society, many advances have been made in the telecommunicative arts, and especially within the videoconferencing genre. Videoconferencing is made possible through the use of the videophone, which electronically reproduces the image of a first communicator on a video screen at the site of a second and any subsequent communicators, and vice versa. However, the effectiveness of the videophone is dependent upon an accurate electronic reproduction of the communicators. For example, the videophone must be adjusted to reproduce the desired image. The adjustment may possibly involve a vertical adjustment to focus on a particular image, taking into account the height of the image. Thus, there is a need for an apparatus that can be adjusted to focus on the communicator, or anyone or anything else necessary for the videoconference. This need is solved through the use of adjustable devices, similar to the present invention, which allow the videophones, or any like instrument, to adjust their viewing range in an up and down vertical motion.




Adjustable devices, or any like instruments, are presently known in the art. However, such devices are unable to be assembled in a simple manner, and the operation of these devices can be cumbersome. Additionally, these devices are unable to be readily disassembled by the user, if he or she so desires.




Thus, there exists the need for an adjustable device that can be assembled, disassembled and operated with relative ease.




Furthermore, there exists the need to provide an adjustable device that, once assembled, can be adjusted in a forward and aftward motion, and will prevent the unintentional disassembly of the adjustable device.




In addition, there exists the need to provide an adjustable device that will maintain its rigid nature so that the adjustable device will not move on its own without the assistance and direction of the user. That is, the videophone, or similar device, once adjusted, should remain in the same position until adjusted again.




Finally, there also exists the need for an adjustable device that will prevent the movement of the videophone, or similar device, in a lateral direction.




SUMMARY OF THE INVENTION




One aspect of the invention provides an adjustable stand apparatus that may be made of molded plastic. The apparatus includes a base member and a top member. The base member includes a left portion and a right portion. Both the left and the right portions include elongated openings. The elongated openings include retaining regions having a first width and first receiving regions having a second width, with the second width being greater than the first width. The elongated openings further include tab portions, which extend into the first receiving regions. The tab portions may include stop portions, which may preferably extend upward to prevent the disengagement of the top member from the base member. The stop portions may further include rib portions. The tab portions may further include lift portions, which preferably protrude downward to permit manual deflection of the tab portions. Preferably, the elongated openings may also include second receiving regions, which may be spaced apart from the first receiving regions. The left and right portions may also include channel regions. The top member also includes a left portion and a right portion. Both the left and the right portions of the top member include first guide portions, preferably of a dovetail shape, which extend from a bottom side of the top member. The first guide portions include an outer width, which is greater than the first width of the retaining regions of the elongated openings. The first guide portions are received in the first receiving regions, and are retained within the retaining regions. Preferably, the top member also includes second guide portions. The second guide portions may be of a dovetail shape, and may also include an outer width. The outer width may be greater than the first width of the retaining regions of the elongated openings. The second guide portions may also be received in the first receiving regions, and may also be retained within the retaining regions. The left and right portions may also include channel guide portions, also extending from the bottom side. The channel guide portions may fit within the channel regions, allowing forward-aftward movement, but preventing lateral movement.




A further aspect of the invention provides a method of assembling an adjustable stand apparatus. A base member and a top member are provided. The base member includes a left portion and a right portion. Both the left and the right portions include elongated openings. The elongated openings include retaining regions having a first width and receiving regions having a second width, with the second width being greater than the first width. The elongated openings further include tab portions, which extend into the receiving regions. The top member also includes a left portion and a right portion. Both the left and the right portions of the top member include guide portions, which extend from a bottom side of the top member. The guide portions include an outer width, which is greater than the first width of the retaining regions of the elongated openings. The guide portions are inserted into the receiving regions of the elongated openings. The tab portions are deflected in a downward direction. The guide portions are slid in a forward direction to allow the tab portions to retract into their original position. The guide portions are then retained within the elongated openings.




A further aspect of the invention provides a method of disassembling an adjustable stand apparatus. An adjustable stand apparatus is provided. The adjustable stand apparatus includes a base member and a top member. The base member includes a left portion and a right portion. Both the left and the right portions include elongated openings. The elongated openings include retaining regions having a first width and receiving regions having a second width, with the second width being greater than the first width. The elongated openings further include tab portions, which extend into the receiving regions. The top member also includes a left portion and a right portion. Both the left and the right portions of the top member include guide portions, which extend from a bottom side of the top member. The guide portions include an outer width, which is greater than the first width of the retaining regions of the elongated openings. The tab portions are manually deflected. The guide portions are slid in an aftward direction. The guide portions are then removed from the receiving regions of the elongated openings.




A further aspect of the invention provides a method of operating an adjustable stand apparatus. An adjustable stand apparatus is provided. The adjustable stand apparatus includes a base member and a top member. The base member includes a left portion and a right portion. Both the left and the right portions include elongated openings. The elongated openings include retaining regions having a first width and first receiving regions having a second width, with the second width being greater than the first width. The elongated openings further include tab portions, which extend into the first receiving regions. The left and right portions may also include channel regions. The top member also includes a left portion and a right portion. Both the left and the right portions of the top member include first guide portions, which extend from a bottom side of the top member. The first guide portions include an outer width, which is greater than the first width of the retaining regions of the elongated openings. Preferably, the top member also includes second guide portions. The second guide portions may be of a dovetail shape, and may also include an outer width. The outer width may be greater than the first width of the retaining regions of the elongated openings. The left and right portions may also include channel guide portions, also extending from the bottom side. The first guide portions are slid through the elongated openings in a first direction and a second direction, with the second direction being opposite the first direction. The first guide portions are then stopped in the first direction. The top member may be rotated along an arcuate path. Additionally, the first guide portions and the second guide portions may be stabilized in the elongated openings. Preferably, the second guide portions may also be slid through the elongated openings in the first direction and the second direction. Preferably, the channel guide portions may be slid through the channel regions in the first direction and the second direction, and may be stopped in the second direction.




The invention provides the foregoing and other features, and the advantages of the invention will become further apparent from the following detailed description of the presently preferred embodiments, read in conjunction with the accompanying drawings. The detailed description and drawings are merely illustrative of the invention and do not limit the scope of the invention, which is defined by the appended claims and the equivalents thereof.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is an exploded perspective view of a preferred embodiment of an adjustable stand apparatus made in accordance with the invention;





FIG. 2

is a bottom view of the embodiment of

FIG. 1

;





FIG. 3

is a sectional view of

FIG. 2

, taken through line


3





3


;





FIG. 4

is a bottom view of the embodiment of

FIG. 1

;





FIG. 5

is a sectional view of

FIG. 4

, taken through line


5





5


;





FIG. 6

is an enlarged view of the region within circle A of

FIG. 5

;





FIG. 7

is a top view of a preferred embodiment, with an electronic device disposed thereon, of the adjustable stand apparatus;





FIG. 8

is a sectional view of

FIG. 7

, taken through line


8





8


;





FIG. 9

is an enlarged view of the region within circle B of

FIG. 8

;





FIG. 10

is a perspective view of the embodiment of

FIG. 7

;





FIG. 11



a


is a side view of the embodiment of

FIG. 7

, shown with the top member rotated 7° forward; and





FIG. 11



b


is a side view of the embodiment of

FIG. 7

, shown with the top member rotated 7° aftward.











DETAILED DESCRIPTION OF THE




PRESENTLY PREFERRED EMBODIMENTS




Referring to

FIG. 1

, reference numeral


10


represents a preferred embodiment of an adjustable stand apparatus. The adjustable stand apparatus


10


includes a base member


12


and a top member


14


. Both the base member


12


and the top member


14


are preferably made of a rigid material, for example, standard molded polycarbonate or ABS plastic, but can also be made of any type of plastic, as well as any other similar material. The choice of standard molded polycarbonate or ABS plastic is to ensure both the rigidity and structure of the adjustable stand apparatus


10


.




The base member


12


of the adjustable stand apparatus


10


includes a left portion


16


and a right portion


18


. In the embodiment shown, within each of these portions


16


,


18


, there is included elongated openings


20


,


22


, which are shown as extending from the front to the rear of the base member


12


. In the embodiment shown, the elongated openings


20


,


22


include a retaining region


24


,


26


, a first receiving region


28


,


30


, and, preferably, a second receiving region


32


,


34


. The retaining regions


20


,


22


are of a first width. Conversely, the four receiving regions


28


,


30


,


32


,


34


are preferably of a second width. For reasons that will be discussed later, the second width is preferably greater than the first width. Also within the elongated openings


20


,


22


are included tab portions


36


,


38


. The tab portions


36


,


38


extend from a rear end of the elongated openings


20


,


22


into the first receiving regions


28


,


30


. Also included in the left and right portions


16


,


18


of the base member


12


are channel regions


40


,


42


.




The top member


14


of the adjustable stand apparatus


10


also includes a left portion


44


and a right portion


46


. Within each of the left and right portions


44


,


46


, there is included first guide portions


48


,


50


and, preferably, second guide portions


52


,


54


. Each of the four guide portions


48


,


50


,


52


,


54


extend from the bottom side of the left and right portions


44


,


46


of the top member


14


. The four guide portions


48


,


50


,


52


,


54


include an outer width which is greater than the width of the retaining regions


24


,


26


of the base member


12


. This outer width is slightly less than the width of the receiving regions


28


,


30


,


32


,


34


of the base member


12


. This design allows the four guide portions


48


,


50


,


52


,


54


to be inserted into the receiving regions


28


,


30


,


32


,


34


. In the embodiment shown, also extending from the bottom side of the top member


14


, are channel guide portions


56


,


58


. The channel guide portions


56


,


58


are preferably of a width slightly smaller than the channel regions


40


,


42


of the base member


12


, so as to allow the channel guide portions


56


,


58


entry into the channel regions


40


,


42


. Preferably, the channel regions


40


,


42


, in conjunction with the channel guide portions


56


,


58


, serve to allow movement of the top member


14


in both a forward and aftward direction, while preventing movement of the top member in a lateral direction.




With regards to the four guide portions


48


,


50


,


52


,


54


and the four receiving regions


28


,


30


,


32


,


34


, it should be noted that the second guide portions


52


,


54


and the second receiving regions


32


,


34


are merely preferred embodiments of the invention, and are not requirements. The adjustable stand apparatus


10


can be designed with only first guide portions


48


,


50


, and only first receiving regions


32


,


34


. Conversely, the channel guide portions


56


,


58


and the channel regions


40


,


42


are also preferred embodiments of the invention, used in adding rigidity to the adjustable stand apparatus


10


.




Finally, also shown in

FIG. 1

on the base member


12


, are the stop portions


60


,


62


of the tab portions


36


,


38


. The stop portions


60


,


62


serve to provide a forward mechanical stop during operation of the adjustable stand apparatus


10


, as well as to prevent the unintentional disassembly of the adjustable stand apparatus


10


. Preferably, the stop portions


60


,


62


may include a rib portion, which may take the form of a rib-shaped protrusion integral with the tab portions


36


,


38


.




Referring to

FIGS. 2-3

, the adjustable stand apparatus


10


is shown with the top member


14


rotated forward along an arcuate path. For reference, the view shown in

FIGS. 2-3

is the bottom view of the adjustable stand apparatus


10


as shown in

FIG. 11



a


. As shown in

FIG. 2

, the four guide portions


48


,


50


,


52


,


54


are of a width larger than the retaining region


24


,


26


of the elongated openings


20


,


22


of the base member


12


. When the top member


14


is engaged with the base member


12


, the four guide portions


48


,


50


,


52


,


54


pass through the corresponding four receiving regions


28


,


30


,


32


,


34


of the base member


12


. Furthermore, when the top member


14


slides in a forward direction, the four guide portions


48


,


50


,


52


,


54


enter the retaining regions


24


,


26


of the elongated openings


20


,


22


. This is the position shown in FIG.


2


. Due to the fact that the width of the retaining regions


24


,


26


is less than that of the four guide portions


48


,


50


,


52


,


54


, the retaining region


24


,


26


prevents the four guide portions


48


,


50


,


52


,


54


from separating from the base member


12


. This difference in width also serves to stabilize the four guide portions


48


,


50


,


52


,


54


within the elongated openings


20


,


22


.




As is shown in

FIG. 3

, the channel guide portions


56


,


58


fit within the channel regions


40


,


42


, and rotate forward and aftward much in the same way as the four guide portions


48


,


50


,


52


,


54


slide within the elongated openings


20


,


22


. Also depicted in

FIG. 3

is the position in which the top member


14


is rotated forward to a point at which the contact of the channel guide portion


58


with the channel region


42


prevents any further forward motion of the top member


14


.




Referring to

FIGS. 4-6

, the adjustable stand apparatus


10


is shown with the top member


14


rotated aftward along an arcuate path. For reference,

FIG. 4

is a bottom view of the adjustable stand apparatus


10


as depicted in

FIG. 11



b


. As shown in

FIG. 4

, the first guide portions


48


,


50


have entered the first receiving regions


28


,


30


, and the second guide portions


52


,


54


have entered the second receiving regions


32


,


34


. In doing so, the first guide portions


48


,


50


make contact with the stop portions


60


,


62


.





FIG. 5

shows the position in which the top member


14


is rotated aftward to a point at which the contact of the channel guide portion


58


with the channel region


42


prevents any further aftward motion.

FIG. 6

shows the tab portion


38


as further including a stop portion


60


and a lift portion


66


. Although not shown, the structure of the left tab portion


36


is the same as the right tab portion


38


, with the stop portion referenced as numeral


62


(shown in FIG.


1


), and the lift portion referenced as numeral


64


(shown in FIG.


4


). By being in contact with the tab portions


36


,


38


, the first guide portions


48


,


50


are prevented from being separated from the base member


12


.




As mentioned above, the width of the retaining regions


24


,


26


of the elongated openings


20


,


22


of the base member


12


is less than the outer width of the four guide portions


48


,


50


,


52


,


54


of the top member


14


.

FIGS. 7-9

show the interaction between the above features in more detail. With reference to

FIG. 9

, there is shown the interaction between the second guide portion


54


of the right portion


46


of the top member


14


, with the elongated opening


22


of the right portion


18


of the base member


12


. Each of the four guide portions


48


,


50


,


52


,


54


, preferably has a dovetail shape. This allows the guide portions to be inserted within the receiving regions of the elongated openings


20


,


22


of the base member


12


, and be retained within the base member


12


, via the retaining regions


24


,


26


. This design allows the top member to slide forward and aftward within the elongated openings


20


,


22


, and be prevented from unintentional disengagement with the base member


12


.

FIG. 9

also shows, in more detail, the lift portion


66


of the tab portion


38


, which is used by the user to manually deflect the tab portion


38


so as to disassemble the adjustable stand apparatus


10


.




With regard to

FIG. 10

, the adjustable stand apparatus


10


is shown, with an electronic device disposed thereon, in a central position with respect to the base member


12


(i.e., neither rotated forward nor aftward).

FIG. 11



a


shows the adjustable stand apparatus


10


rotated forward, along an arcuate path, with respect to the base member


12


.

FIG. 11



b


shows the adjustable stand apparatus


10


rotated aftward, along an arcuate path. As depicted in both

FIGS. 11



a


and


11




b


, the preferable degree of arcuate rotation is 7° in both the forward and the aftward directions; however, the arcuate rotation of the top member


14


with respect to the base member may be greater or less.




The specifics of the structure of a preferred embodiment of the adjustable stand apparatus


10


having been disclosed, attention will now be directed to operation of the adjustable stand apparatus


10


. With reference to

FIG. 1

, the apparatus may be assembled as follows: The first guide portions


48


,


50


of the top member


14


are placed over the first receiving regions


28


,


30


of the base member


12


. This is shown via arrows


68


,


70


in FIG.


1


. In a similar manner, the second guide portions


52


,


54


are placed over the second receiving regions


32


,


34


(shown via arrows


72


,


74


), and the channel guide portions


56


,


58


are placed over the channel regions


40


,


42


, as is shown via arrows


76


,


78


. At this point, the tab portions


36


,


38


of the base member


12


are preventing entry of the first guide portions


48


,


50


into the first receiving regions


28


,


30


. However, the tab portions


36


,


38


may be deflected downward, by the application of a minor amount of force to the top member


14


. At this point, the first guide portions


48


,


50


, the second guide portions


52


,


54


and the channel guide portions


56


,


58


, will enter the first receiving regions


28


,


30


, the second receiving regions


32


,


34


and the channel regions


40


,


42


, respectively. By rotating the top member


14


in a forward direction, the tab portions


36


,


38


will “snap” back to their original positions, and the four guide portions


48


,


50


,


52


,


54


will enter the retaining regions


24


,


26


of the elongated openings


20


,


22


. Additionally, the channel guide portions


56


,


58


will enter the channel regions


40


,


42


. At this point, the top member


14


is engaged with the base member


12


, and assembly is complete. By returning to their original positions, and effectively standing in the way of the first guide portions


48


,


50


, the tab portions


36


,


38


, act to prevent the top member


14


from disengaging and separating from the base member


12


.




Once the adjustable stand apparatus


10


has been assembled, in the manner described above, operation is just as simple. Owing to the fact that the top member


14


is slidably, as opposed to fixedly, attached to the base member


12


, the top member


14


can be rotated both forward and aftward, depending upon the preferences of the user. The preferred arcuate rotations are shown in

FIG. 11



a


, which shows a 7° forward rotation, and

FIG. 11



b


, which shows a 7° aftward rotation, while the centered position is shown in FIG.


7


. In the embodiment shown, the front edges of the elongated openings


20


,


22


and the channel regions


40


,


42


will serve to prevent the top member


14


from rotating, preferably, more than 7° in the forward direction with respect to the base member


12


. Conversely, the back edges of the elongated openings


20


,


22


and the channel regions


40


,


42


will serve to prevent the top member


14


from rotating, preferably, more than 7° in the aftward direction with respect to the base member


12


.




Disassembly of the adjustable stand apparatus


10


is as follows: First, the user manually deflects the lift portions


64


,


66


of the tab portions


36


,


38


of the base member


12


downward. Doing so will free the elongated openings


20


,


22


, allowing the first guide portions


48


,


50


to enter the first receiving regions


28


,


30


. The user will then rotate the top member


14


aftward until the first guide portions


48


,


50


have entered the first receiving regions


28


,


30


. At this time, the second guide portions


52


,


54


will preferably have entered the second receiving regions


32


,


34


of the elongated openings


20


,


22


. The top member


14


can then be lifted out of contact with the base member


12


, completing the disassembly of the adjustable stand apparatus


10


.




While the embodiments of the present invention disclosed herein are presently considered to be preferred, various changes and modifications can be made without departing from the spirit and scope of the invention. The scope of the invention is indicated in the appended claims, and all changes that come within the meaning and range of equivalents are intended to be embraced therein.



Claims
  • 1. An adjustable stand apparatus comprising:a base member, the base member including a left portion and a right portion, each of the left and right portions including an elongated opening, each of the elongated openings including a retaining region having a first width, and a first receiving region having a second width, the second width being greater than the first width, and a tab portion extending into the first receiving region; a top member, the top member including a left portion and a right portion, each of the left and right portions including a first guide portion, extending from a bottom side of the top member, the first guide portion including an outer width greater than the first width of the retaining region of the elongated opening of the base member; and wherein the first guide portion is received in the first receiving region of the elongated opening of the base member and is retained within the retaining region of the elongated opening.
  • 2. The adjustable stand apparatus of claim 1, wherein each of the tab portions of the base member includes a stop portion, extending upward from the tab portion, to prevent disengagement of the first guide portion of the top member from the elongated opening of the base member.
  • 3. The adjustable stand apparatus of claim 2, wherein each of the stop portions further includes a rib portion.
  • 4. The adjustable stand apparatus of claim 3, wherein each of the tab portions of the base member further includes a lift portion.
  • 5. The adjustable stand apparatus of claim 4, wherein each of the lift portions of the tab portions of the base member protrudes in a downward direction to permit manual deflection of the tab portion.
  • 6. The adjustable stand apparatus of claim 5, wherein each of the left and right portions of the top member further includes a second guide portion, extending from the bottom side of the top member, the second guide portion including an outer width greater than the first width of the first receiving region of the elongated opening of the base member.
  • 7. The adjustable stand apparatus of claim 6, wherein the each of the elongated openings of the base member further includes a second receiving region to receive the second guide portion.
  • 8. The adjustable stand apparatus of claim 7, wherein the first guide portions and the second guide portions are of a dovetail shape.
  • 9. The adjustable stand apparatus of claim 8, wherein each of the second receiving regions of the base member are spaced apart from the first receiving region.
  • 10. The adjustable stand apparatus of claim 9, wherein each of the left and right portions of the base member further includes a channel region.
  • 11. The adjustable stand apparatus of claim 10, wherein each of the left and right portions of the top member further comprises a channel guide portion, extending from the bottom side of the top member, the channel guide portion being adapted to fit within the channel region of the base member, to allow movement in a forward direction and an aftward direction, and to prevent movement in a lateral direction.
  • 12. The adjustable stand apparatus of claim 10, wherein the top member and the bottom member are made of molded plastic.
  • 13. A method of assembling an adjustable stand apparatus, comprising the steps of:providing a base member and a top member, the base member including a left portion and a right portion, each of the left and right portions including an elongated opening, each of the elongated openings including a retaining region having a first width, and a receiving region having a second width, the second width being greater than the first width, and a tab portion extending into the receiving region, the top member including a left portion and a right portion, each of the left and right portions including a guide portion, extending from a bottom side of the top member, the guide portion including an outer width greater than the first width of the retaining region of the elongated opening of the base member; inserting each of the guide portions of the top member into the receiving regions of the elongated openings of the base member; deflecting the tab portions of the base member in a downward direction; sliding the guide portions of the top member in a forward direction to allow the tab portions to retract into their original position; and retaining the guide portions of the top member within the elongated openings of the base member.
  • 14. A method of disassembling an adjustable stand apparatus, comprising the steps of:providing an adjustable stand apparatus including a base member and a top member, the base member including a left portion and a right portion, each of the left and right portions including an elongated opening, each of the elongated openings including a retaining region having a first width, and a receiving region having a second width, the second width being greater than the first width, a tab portion extending into the receiving region, the top member including a left portion and a right portion, each of the left and right portions including a guide portion, extending from a bottom side of the top member, the guide portion including an outer width greater than the first width of the retaining region of the elongated opening of the base member; manually deflecting the tab portions of the base member; sliding the guide portions of the top member in a aftward direction; and removing the guide portions of the top member from the receiving regions of the elongated openings of the bottom member.
  • 15. A method of operating an adjustable stand apparatus, comprising the steps of:providing an adjustable stand apparatus including a base member and a top member, the base member including a left portion and a right portion, each of the left and right portions including an elongated opening, each of the elongated openings including a retaining region having a first width, and a first receiving region having a second width, the second width being greater than the first width, and a tab portion extending into the first receiving region, the top member including a left portion and a right portion, each of the left and right portions including a first guide portion, extending from a bottom side of the top member, the first guide portion including an outer width greater than the first width of the retaining region of the elongated opening of the base member; sliding the first guide portions through the elongated openings in first direction and a second direction, the second direction being opposite of the first direction; and stopping the first guide portions in the first direction with the tab portions.
  • 16. The method of claim 15, further providing a second guide portion extending from the bottom side of each of the left and right portions of the top member, each of the second guide portions having a width greater than the first width of the retaining region of the elongated openings of the base member; andsliding the second guide portions through the elongated openings in the first direction and the second direction.
  • 17. The method of claim 16, further providing a channel region being disposed within each of the left and right portions of the base member, and a channel guide portion being disposed within each of the left and right portions of the top member and extending from the bottom side of the top member; andsliding the channel guide portions through the channel regions in the first direction and the second direction.
  • 18. The method of claim 17, further including the step of stopping the channel guide portions in the second direction with the channel regions.
  • 19. The method of claim 18, further including the step of rotating the top member along an arcuate path.
  • 20. The method of claim 19, further including the step of stabilizing the guide portions within the elongated openings.
US Referenced Citations (8)
Number Name Date Kind
4368867 Pendleton et al. Jan 1983
4494720 Gregory et al. Jan 1985
4591120 Bryant-Jeffries et al. May 1986
5518216 Wu May 1996
5683068 Chase et al. Nov 1997
5881985 Hoenig Mar 1999
5887837 Johns et al. Mar 1999
6007038 Han Dec 1999