Tower fan

Information

  • Patent Grant
  • 6830433
  • Patent Number
    6,830,433
  • Date Filed
    Monday, August 5, 2002
    22 years ago
  • Date Issued
    Tuesday, December 14, 2004
    19 years ago
Abstract
An apparatus for the distribution of air includes a fan unit having a first and second portion, where the second portion is pivotable relative to the first portion about a common axis. A base supports the fan unit, and the fan unit may oscillate relative to the base. The fan unit may have a height greater than the width of the fan unit. The fan unit may also be capable of tilting relative to the base to a desired angle.
Description




FIELD OF THE INVENTION




This invention relates to air distribution fans. In particular, the invention relates to fans being able to direct air in different directions by rotation, oscillation, and/or tilting.




BACKGROUND OF THE INVENTION




Artificially induced airflow has long been used to cool people in warm weather. With the mass production of small electric motors, floor and table mounted propeller style fans came into widespread use. Fans increase airflow, thereby increasing evaporative cooling from a person's skin.




The placement and size of fans may determine their effectiveness. If fans are too small, too close or only blow air in one direction, the cooling power of the fan may be limited. For example, if the zone covered by the fan is fixed, the user must reposition the fan so as to face a different area intended to be cooled. It has long been known to have mechanisms to oscillate fan assemblies from side-to-side, widening the air distribution and enlarging the zone of moving air. However, as the fan oscillates from side-to-side, the side from which the fan is moved no longer obtains the benefit of the moving air until the fan returns to that side. Also, the angular zone of the moved air is fixed and cannot be altered by the user. If it is desired to blow air in more than one direction at once, then typically two or more fans are used simultaneously. However, multiple fans require additional floor or table space. One solution has been to mount more than one fan on a vertical pole. However, use of multiple propeller fans mounted to a single pole can take up a large amount of space and generate an undesirable amount of noise.




SUMMARY OF THE INVENTION




The inventors have appreciated that typical air distribution fans do not provide sufficient flexibility for a user to adjust where and how the air is directed from the fan. Oscillating type fans can provide a changing air flow direction, but persons near the fan may experience discomfort due to the constantly changing amount of cooling air flow to their area. That is, a person may feel cool while the oscillating fan is directed toward the person, but may feel warm when the fan is directed another way.




In at least one aspect of the invention, an apparatus for air distribution, such as a fan, has a fan unit having a first portion and a second portion, the second portion being pivotally mounted to the first portion. The first and second portions are constructed and arranged to output an air flow. A base supports the fan unit and at least one of the first and second portions is capable of oscillating relative to the base.




In one embodiment, the fan unit has a height and a width, and the height may be greater than the width. The fan unit has a longitudinal axis along its length, the second portion may be pivotable about the longitudinal axis. The second portion may be pivotable in two different directions about the longitudinal axis of the fan unit. The first and second portions may include mating parts. The mating parts may have substantially the same cross-sectional shape, such that they mate substantially seamlessly. The second portion may be pivotable manually. A mechanical drive may pivot the second portion of the fan unit relative to the first portion. The apparatus may include a means for pivotally mounting the second portion to the first portion.




The fan unit may be capable of oscillating relative to the base. At least one of the first and second portions may be capable of oscillating relative to the base in two directions. The fan unit may be capable of oscillating relative to the base through a range of at least about 10° from a starting position in opposite directions. A control panel may be provided on the fan unit for controlling at least the oscillating movement of at least one of the first and second portions of the fan unit. A foot pedal may be provided remotely connected to the base for controlling at least the oscillating movement of at least one of the first and second portions of the fan unit. A remote control device may be provided for controlling at least the oscillating movement of at least one of the first and second portions of the fan unit.




In another embodiment of the invention, a pivotal connection may be provided to tilt the fan unit relative to the base. The pivotal connection may be provided at the connection between the base and the fan unit for tilting the fan unit relative to the base. The pivotal connection may be provided on the first portion of the fan unit for tilting the fan unit relative to the base. The base may include two parts rotatably joined together, one part having two pivot arms extending away from the base, the arms pivotally connected to the first portion of the fan unit to provide the pivotal connection for tilting the fan unit relative to the base and for oscillating the fan unit relative to the second part of the base. The fan unit may tilt at least about 1° in at least one direction from an original position.




In another aspect of the invention, an apparatus for distribution of air is provided having a fan unit having a first portion and a second portion. The second portion is pivotally mounted to the first portion about a longitudinal axis and the first and second portions are constructed and arranged to output an air flow. A base supports the fan unit and at least one of the first and second portions is capable of oscillating relative to the base. The fan unit has a height and a width, and the height is greater than the width.




In one embodiment, a means for pivotally mounting the second portion to the first portion is provided. The second portion may be pivotable manually. A mechanical drive may be provided to pivot the second portion of the fan unit relative to the first portion. A control panel may be provided on the fan unit for controlling at least the fan unit. A foot pedal may be remotely connected to the base for controlling at least the fan unit. The fan unit may be capable of oscillating relative to the base. A pivotable connection may be provided to tilt the fan unit relative to the base. The base may include two parts rotatably joined together, one part may have two pivot arms extending away from the base, the arms pivotally connected to the first portion of the fan unit to provide the pivotal connection for tilting the fan unit relative to the base and for oscillating the fan unit relative to the second part of the base. The fan unit may tilt at least about 1° in two opposite directions from an original position.




In yet another aspect of the invention, an apparatus for distribution of air is disclosed having a fan unit having a first portion and a second portion, the second portion being pivotally mounted to the first portion. The first and second portions are constructed and arranged to output an air flow. A base supports the fan unit and the fan unit is capable of tilting relative to the base.




In one embodiment, a means for pivotally mounting the second portion to the first portion is provided. The fan unit may be pivotally connected to the base for tilting the fan unit relative to the base. A pivotal connection may be provided on the first portion of the fan unit for tilting the fan unit relative to the base. The base may include two parts rotatably joined together, one part having two pivot arms extending away from the base, the arms pivotally connected to the first portion of the fan unit to provide the pivotal connection for tilting the fan unit relative to the base and for oscillating the fan unit relative to the second part of the base. The fan unit has a height and a width, and the height may be greater than the width. The fan unit has a longitudinal axis along a length of the fan unit, the second portion may be pivotable about the longitudinal axis. At least one of the first and second portions of the fan unit may be capable of oscillating relative to the base in two directions. A control panel may be provided on the fan unit for controlling at least the fan unit. A foot control pedal may be provided remotely connected to the base for controlling at least the fan unit. A remote control device may be provided for controlling at least the fan unit.











BRIEF DESCRIPTION OF THE DRAWINGS




The objects, advantages and features of aspects of the invention will be more clearly appreciated from the following detailed description, when taken in conjunction with the accompanying drawings, wherein like numbers are used for like features, in which:





FIG. 1

is a perspective view of one embodiment of a fan according to the present invention;





FIG. 2

is a perspective view of the fan of

FIG. 1

, with one portion of the fan unit pivoted relative to the other and having a remote control device;





FIGS. 3A-C

are schematic cross-sectional views of different embodiments of the fan unit of

FIG. 2

taken along line


3





3


, with one portion of the fan unit pivoted relative to the other;





FIG. 4

is a side view of the fan of the embodiment of

FIG. 1

, showing the fan unit tilted relative to an original positional axis;





FIG. 5

is a perspective view of another embodiment of a fan according to the present invention, with one portion of the fan unit pivoted relative to the other and having a foot control pedal;





FIG. 6

is a side view of a second portion of the fan unit of

FIG. 5

;





FIGS. 7A-B

are schematic cross-sectional views of different embodiments of the fan unit of

FIG. 5

taken along line


7





7


, with one portion of the fan unit pivoted relative to the other;





FIG. 8

is a side view of the embodiment of the fan of

FIG. 5

with a tilting mechanism; and





FIG. 9

is a cross-sectional side view of the tilting mechanism of FIG.


8


.











DETAILED DESCRIPTION




As discussed above, illustrative embodiments in accordance with the invention provide an air distribution apparatus with a fan unit having two or more portions that may be pivoted relative to one another, such that they may be arranged to move air in different directions, thus eliminating the need for two or more separate fans. The fan unit is supported by a base and may be constructed and arranged to oscillate relative to the base. Moreover, the fan unit may also be constructed and arranged to be tiltable relative to the base.




The multiple portions of the fan unit may be connected together in such a way that the direction in which the portions of the fan unit move air may be changed relative to one another. For example, two portions of the fan unit may be joined by a rotatable coupling connection so that the units may be pivoted relative to each other about the rotatable coupling, allowing selective adjustment of the direction of air from each portion. Alternately, the rotatable coupling may allow one portion of the fan unit to pivot relative to another, such that only one portion moves. Portions of the fan unit may be connected by other rotary-type or pivoting connections, such as a bayonet-type connection, that allow adjustment of the direction in which the portions of the fan unit move air as will be appreciated by one of skill in the art.




As shown in

FIGS. 1-9

, illustrative embodiments of a fan


10


feature a base


12


and a fan unit


14


having at least a first portion


16


and a second portion


18


. Although the embodiments illustrated only show fan units


14


having a first and second portion


16


and


18


, it will be appreciated that more than two portions may form the fan unit


14


. Each portion


16


and


18


features a housing


20


and its own fan assembly (not shown) for the generation of air movement. As shown in

FIGS. 4 and 8

, preferably the fan unit


14


has an overall tower shape, as height H of the fan unit is greater than the fan unit's width W. The first and second portions


16


and


18


may be any desired size to form the entire fan unit


14


. For example, the two portions


16


and


18


could be of equal size, or one could be larger than the other. As shown, the first and second portions


16


and


18


may have substantially the same cross-sectional shape and size where they mate so that the transition from the first portion


16


to the second portion


18


is seamless, making the fan unit


14


look like a single unit when the portions


16


and


18


are located to move air in the same direction. As shown, the first portion


16


is longer than the second portion


18


along the fan unit's longitudinal axis X, or its length.




As shown in

FIGS. 1

,


2


,


5


and


6


, the fan unit


14


has air inlets


22


, which may be located on the back side of the fan unit


14


for taking in air. The front side features air outlets


24


provided with slats


26


for directing air that is moved through and out of the fan unit


14


. It will be appreciated that the air inlets


22


and air outlets


24


may be provided in any suitable location on the portions of the fan unit


14


. One embodiment of the second portion


18


of the fan unit


14


is shown in

FIG. 6

with the air inlets


22


on the back side of the second portion


18


and the air outlets


24


with slats


26


on the front side of the second portion


18


. The slats


26


may be movable to assist in redirecting air. In another embodiment, the air inlet could be provided on the bottom of a unit with the air outlet at the top. In a still further embodiment, the air inlet may include the whole lower section completely around the unit while the air outlet is also arranged completely around the unit, this time at a top portion.




As shown in

FIGS. 2 and 5

, the second portion


18


of the fan unit


14


may be rotatable or pivotable relative to the first portion


16


of the fan unit


14


, about the longitudinal axis X or length of the fan unit


14


. As shown, the second portion


18


may be pivoted in either direction about the longitudinal axis, to the right or left, such that air coming out of the second portion


18


is directed in a different direction than air coming out of the first portion


16


. The second portion


18


may be caused to pivot relative to the first portion


16


in any suitable manner. Thus, the portions


16


and


18


of the fan unit


14


may move air in the same or different directions. The second portion


18


may be pivoted by any desired amount, and may be rotated 360° to return back to its original position relative to the first portion


16


of the fan unit


14


. This arrangement may be preferred over oscillating fans since an approximately constant output of air may be directed toward a particular area, unlike oscillating fans which will change the direction in which air is moved. However, the fan unit


14


may also include an oscillating feature as described in more detail below.




As shown in the illustrated embodiments, the portions


16


and


18


of the fan unit


14


are stacked so that the second portion


18


of the fan unit


14


is on top of the first portion


16


of the fan unit


14


. A first mating part


28


of the first portion is pivotally mated with the second mating part


30


of the second portion. Thus, the orientations of the air outlets


24


may be adjusted relative to one another about the longitudinal axis X by any desired amount. It will be appreciated, however, that the portions


16


and


18


may be located in any suitable manner to form the fan unit


14


, and thus, the second portion


18


could be pivotable about any common axis. For example, the first and second portions


16


and


18


could be located side-by-side with the common axis being substantially along a horizontal axis.




As shown in

FIGS. 3A-C

, the cross-sectional shape of the first and second portions


16


and


18


may be substantially rectangular, although any suitable cross-sectional shape may be used. In

FIG. 3A

, the second portion


18


is shown pivoted in the direction of arrow P to the right relative to the first portion


16


about pivot point C to enlarge the zone of moved air from zone A to include both zones A and B. It will be appreciated that the pivot point C may be provided at any suitable location on the cross-sectional shape. As described below,

FIGS. 3A-3C

show the pivot point in different positions. As shown in

FIG. 3A

, the pivot point C is located at substantially the center of the rectangular cross-sectional shape. As shown in

FIG. 3B

, the second portion


18


is shown pivoted in the direction of arrow P to the right relative to the first portion


16


about pivot point C. The pivot point C is located at substantially the center of one side of the rectangular cross-sectional shape. In

FIG. 3C

, the second portion


18


is shown pivoted in the direction of arrow P to the left of the first portion


16


of the fan unit


14


about pivot point C. Pivot point C is located substantially in a corner of the rectangular cross-sectional shape.




Referring now to

FIGS. 7A-B

, the cross-sectional shape of the first and second portions


16


and


18


of another embodiment of the invention may be substantially circular, although any suitable cross-sectional shape may be used. In

FIG. 7A

, the second portion


18


is shown pivoted in the direction of arrow P to the left of the first portion


16


of the fan unit


14


about pivot point D to enlarge the zone of moved air to include both zones E and F. The pivot point E is located in substantially the center of the circular cross-sectional shape, although it may be located in any suitable location. In

FIG. 7B

, the second portion


18


is shown pivoted in the direction of arrow P to the right of the first portion


16


of the fan unit


14


about pivot point E. The pivot point E is located adjacent an edge of the circular cross-sectional shape.




The connection between the portions


16


and


18


of the fan unit


14


may be arranged in any suitable way, e.g., to allow pivotal adjustment in the relative positions of the portions of the fan unit


14


. As discussed above, the portions


16


and


18


of the fan unit


14


may be joined by a rotatable coupling (not shown) so that the portions maybe pivoted relative to one another, or so that one portion may be pivoted relative to another portion, which may be fixed. The portions


16


and


18


of the fan unit


14


may also be connected by a rotary-type connection (not shown). For example, the portions


16


and


18


of the fan unit


14


may be connected at corresponding ends by a bayonet-type connection as is known in the art. The second portion


18


of the fan unit


14


may be pivoted relative to the first portion


16


manually (by hand). Alternatively, a mechanical drive (not shown) could be used to pivot the second portion


18


of the fan unit


14


relative to the first portion


16


. Any suitable mechanical drive could be used.




As is known in the art, the fan unit


14


includes at least one fan assembly (not shown) that moves air into the air inlets


22


and out the air outlets


24


. It will be understood that a single fan assembly, having a motor and a blower, may be provided in the fan unit


14


, or a fan assembly, with a motor and blower, may be provided in each of the portions


16


and


18


of the fan unit


14


. Alternately, a single motor could be provided with a blower for each portion


16


and


18


of the fan unit


14


. It will be appreciated that any type of fan assembly may be used in the fan unit


14


to achieve movement of air. Although the fan unit


14


is arranged to move air, the fan unit


14


may also be arranged to perform any other suitable air conditioning function, including heating, humidifying, cooling, or any suitable combination of air conditioning functions.




As shown in

FIGS. 4 and 8

, the fan unit


14


may have an single electrical connector


32


, which may be a plug


34


and wire connector


36


adapted to interface with a standard electrical wall outlet (not shown). Thus, each portion


16


and


18


of the fan unit


14


may be supplied with electrical power through the connector


32


and electrical connections between portions


16


and


18


of the fan unit


14


. As shown in

FIGS. 4 and 8

, the connector


32


may run through the base


12


of the fan


10


to connect to the fan unit


14


. The connector


32


may also be directly connected to the fan unit


14


, instead of through the base


12


. Of course, it will be appreciated that the portions


16


and


18


of the fan unit


14


may share a common power supply, such as a battery, solar or fuel cell, or other power source that may be located within the fan unit


14


. Alternately, the portions


16


and


18


of the fan unit


14


may each have their own dedicated connector or power source.




As shown in the embodiments of

FIGS. 1-9

, the fan


10


may include an oscillating mechanism (not shown) for providing oscillating movement of the fan unit


14


relative to the base


12


. Such a mechanism converts an input motion, such as a circular or rotary motion from a motor, into oscillation. For the purposes of this discussion, oscillation will be understood to refer to a repetitive motion, which causes the fan unit


14


to move air in a repeating pattern of directions. Within the context of a fan, oscillation is a motion wherein the fan unit's rotational axis sweeps through an arc, subsequently moving in reverse direction through the same arc, and returning to its original position. The fan unit


14


may also be able to oscillate 360° in one direction to come back to its original position. Any suitable oscillation mechanism may be used to effectively oscillate the fan unit


14


with respect to the base


12


. It will also be understood that the portions


16


and


18


of the fan unit


14


may be made to oscillate relative to one another and/or the base


12


. It will be appreciated that the fan need not include a separate base


12


, but that one of the portions of the fan unit may support the fan in any suitable manner. Oscillating movement of the fan unit


14


is shown in

FIGS. 1

,


2


and


5


by arrow O.




As shown in the embodiment of

FIGS. 1-4

, the fan unit


14


is connected the base


12


. The base


12


includes two parts


38


and


40


rotatably joined together, the first part


38


having two pivot arms


42


and


44


extending away from the base


12


. The arms


42


and


44


are pivotally connected to the first portion


16


of the fan unit


14


for tilting the fan unit


14


relative to the base


12


, as discussed further below, and for oscillating the fan unit


14


with the first part


38


of the base


12


relative to the second part


40


of the base


12


. In the embodiment of

FIG. 5

, the fan unit


12


has a bottom


48


rotatably connected to the base


12


such that the fan unit


14


oscillates relative to the base


12


.




As shown in the illustrated embodiments of the invention, the fan unit


14


may also be tiltable relative to the base


12


. For example, a pivotal connection


46


may be provided at the connection between the base


12


and the fan unit


14


, such that the fan unit


14


is capable of tilting relative to the base


12


from an original position by an amount to achieve a desired angle φ. The pivotal connection


46


may also be provided on the fan unit


14


itself, for example on the first portion


16


of the fan unit


14


as shown in the embodiment of

FIGS. 1

,


2


and


4


. As described above, the base


12


may include two parts


38


and


40


rotatably joined together. The first part has two arms


42


and


44


extending upwardly with free ends


50


and


52


. The free ends


50


and


52


are pivotally connected to the first portion


16


of the fan unit


14


to form the pivotal connection


46


. The fan unit


14


may be tilted out of any original position (an original position shown in

FIG. 4

in dotted lines for example purposes only) from this pivotal connection


46


by angle φ. It will be appreciated that the original position could be any suitable position for the fan unit, not merely a substantially vertical position as shown in dotted lines. The fan unit


14


may be tiltable by hand, or a mechanical drive (not shown) may be provided to mechanically tilt the fan unit


14


. The fan unit


14


may be tiltable at least about 1° in at least one direction from its original position. Preferably, the fan unit


14


is tiltable to a maximum of 10° from its original position, although it will be understood that the fan unit


14


may be tiltable by any desired amount. The fan unit


14


may also be tiltable in a single direction, for example such that the fan unit


14


is tilted facing up to direct air upwards. As shown in the embodiment of

FIGS. 1-2

and


4


, the fan unit


14


is tiltable in two directions.




Although the specific configuration as shown in

FIGS. 1 and 2

is discussed with regard to tilting the fan unit


14


from its original position, it will be understood that any suitable mechanism for tilting the fan unit


14


from its original position may be used. For example, the embodiment of

FIGS. 5-7

may also be constructed to tilt the fan unit


14


relative to the base


12


. As shown in

FIG. 8

, the tilting may occur in any direction in 360° arc to an angle .phi. in any desired amount from any original position (an original position shown in

FIG. 8

in dotted lines for example purposes only). As shown in

FIG. 9

, the fan unit


14


may have a concave portion


56


mating with a convex portion


54


within the base


12


, which will allow the fan unit


14


to tiltably slide to different tilted positions within the 360° arc. It will be appreciated that any suitable tilting mechanism for the fan unit


14


may be used.




The fan unit


14


may also include controls to control the operation of the fan unit


14


or one or more of the portions


16


and


18


of the fan unit


14


. The controls may include rotatable knobs, depressible buttons, voice or sound actuated switches, or any other suitable device to control the operation of the fan unit. In addition, one set of controls may be used to control both portions


16


and


18


of the fan unit


14


. Thus, a user may turn the fan


10


on/off, adjust airflow rate, or the operational features of the fan


10


using a single set of controls, e.g., those on the second portion


18


.




Although it could be provided anywhere, as shown in

FIGS. 1-2

,


5


-


6


and


8


a control panel


58


is provided at the top of the second portion


18


of the fan unit


14


. In this manner, a user easily accesses the control panel


58


to control operation of the fan


10


. It will be appreciated that the control panel


58


may be provided in any suitable location, for example the control panel


58


may be provided on the base


12


of the fan


10


. As discussed above, the control panel


58


may feature a number of buttons for controlling the fan


10


, such as an on/off button, various speed buttons to operate the fan


10


at at least two different speeds, and buttons to control the fan's movements, including oscillation and tilting of the fan unit


14


and pivoting of the second portion


18


of the fan unit


14


. The controls may also feature a timer to turn the fan


10


off or on at desired times. When tilting of the fan unit


14


and/or pivoting of the second portion


18


of the fan unit


14


are done by one or more mechanical drives, the tilting or pivoting movements may be controlled through the control panel


58


.




As shown in

FIGS. 1 and 5

, a foot pedal


60


may be provided remotely from the fan for controlling the fan


10


. The foot pedal


60


may have similar controls to the control panel


58


, and may be provided in addition to the control panel


58


. The foot pedal


60


may be attached to the base


12


via a cord


62


, or the foot pedal


60


may communicate with the fan


10


remotely without a cord. The controls on the foot pedal, which may include one or more buttons, may be actuated with the user's foot. Alternately, as shown in

FIG. 2

, a remote control


64


may be provided for controlling the fan


10


. The remote control


64


may have similar controls to the control panel


64


, and may be provided in addition to the control panel


64


. Provision of either the foot pedal


60


or the remote control


64


would allow a user to remotely control the functions of the fan


10


without having to move to the fan


10


to use the control panel


58


on the fan


10


itself.




Modifications and improvements within the scope of this invention will occur to those skilled in the art. The above description is intended to be exemplary only. The scope of the invention is defined only by the following claims and their equivalents.



Claims
  • 1. An apparatus for distribution of air, comprising:a fan unit having a first portion and a second portion both arranged along a longitudinal axis, the second portion being pivotally mounted to she first portion about the axis, the first and second portions each being constructed and arranged to outpat an air flow; and a base that supports the fan unit, wherein the fan unit is capable of tilting relative to the base.
  • 2. The apparatus of claim 1 further comprising: means for pivotally mounting the second portion to the first portion.
  • 3. The apparatus of claim 1 wherein the fan unit is pivotally connected to the base for tilting the fan unit relative to the base.
  • 4. The apparatus of claim 1 further comprising: a pivotal connection on the first portion of the fan unit for tilting the fan unit relative to the base.
  • 5. The apparatus of claim 4 wherein:the base includes two parts rotatably joined together, one part having two pivot arms extending away from the base, the arms pivotally connected to the first portion of the fan unit to provide the pivotal connection for tilting the fan unit relative to the base and for oscillating the fan unit relative so the second part of the base.
  • 6. The apparatus of claim 1 wherein the fan unit has a height and a width, and the height is greeter than the width.
  • 7. The apparatus of claim 1 wherein at least one of the first and second portions of the fan unit is capable of oscillating relative to the base in two directions.
  • 8. The apparatus of claim 1 further comprising: a control panel on the fan unit for controlling at least the fan unit.
  • 9. The apparatus of claim 1 further comprising; a foot control pedal remotely connected to the base for controlling at least the fan unit.
  • 10. The apparatus of claim 1 further comprising: a remote control device for controlling at least the fan unit.
  • 11. An apparatus for distribution of air, comprising:a fan unit having a first portion and a second portion both arranged along a longitudinal axis, the second portion being pivotally mounted to the first portion about the axis, the first and second portions each being constructed and arranged to output an air flow; and a base that supports the fan unit, wherein at least one of the first and second portions is capable of vacillating relative to the base.
  • 12. The apparatus of claim 11 wherein the first and second portions are constructed and arranged to each output a separate air flow.
  • 13. The apparatus of claim 11 wherein the fan unit has a height and a width, and the height is greater than the width.
  • 14. The apparatus of claim 11 wherein the second portion is pivotable in two different directions about the longitudinal axis of the fan unit.
  • 15. The apparatus of claim 11 further comprising: mating parts of the first and second portions of the fan unit, and the mating parts have substantially the same cross-section shape, such that they mate substantially seamlessly.
  • 16. The apparatus of claim 11 wherein the second portion is pivotable manually.
  • 17. The apparatus of claim 11 further comprising: a mechanical drive to pivot the second portion of the fan unit relative to the first portion.
  • 18. The apparatus of claim 11 further comprising: means for pivotally mounting the second portion to the first portion.
  • 19. The apparatus of claim 11 wherein the first and second portions are capable of oscillating relative to the base.
  • 20. The apparatus of claim 11 wherein at least one of the first and second portions is capable of oscillating relative to the base in two directions.
  • 21. The apparatus of claim 20 wherein the fan unit is capable of oscillating relative so the base through a range of at least about 10° from a starting position in opposite directions.
  • 22. The apparatus of claim 11 further comprising: a control panel on the fan unit for controlling at least the oscillating movement of at least one of the first and second portions of the fun unit.
  • 23. The apparatus of claim 11 further comprising: a foot pedal remotely connected to the base for controlling at last the oscillating movement of at least one of the first and second portions of the fan unit.
  • 24. The apparatus of claim 11 further comprising: a remote control device for controlling at least the oscillating movement of at least one of the first and second portions of the fan unit.
  • 25. The apparatus of claim 11 further comprising: a pivotal connection to tilt the fan unit relative to the base.
  • 26. The apparatus of claim 25 wherein the pivotal connection is provided at the connection between the base and the fan unit for tilting the fan unit relative to the base.
  • 27. The apparatus of claim 25 wherein the pivotal connection is provided on the first portion of the fan unit for tilting the fan unit relative to the base.
  • 28. The apparatus of claim 25 wherein:the base includes two parts rotatably joined together, one part having two pivot arms extending away from the base, the arms pivotally connected to the first portion of the fan unit to provide the pivotal connection for tilting the fan unit relative to the base and for oscillating the fan unit relative to the second part of the base.
  • 29. The apparatus of claim 25 wherein the fan unit tilts at least about 1° in at friar one direction from an original position.
  • 30. An apparatus for distribution of air, comprising:a fan unit having a first portion and a second portion both arranged along a longitudinal axis, the second portion being pivotally mounted to the first portion about the axis, the first and second portions being constructed and arranged to both output an air flow; and a base that supports the fan unit, at least one of the first and second portions being capable of oscillating relative to the base, wherein the fan unit has a height and a width, and the height is greater than the width.
  • 31. The apparatus of claim 30 further comprising: means for pivotally mounting the second portion to the first portion.
  • 32. The apparatus of claim 30 wherein the second portion is pivotable manually.
  • 33. The apparatus of claim 30 further comprising: a mechanical drive to pivot the second portion of the fan unit relative to the first portion.
  • 34. The apparatus of claim 30 further comprising a control panel on the fan unit for controlling at least the fan unit.
  • 35. The apparatus of claim 30 further comprising: a foot pedal remotely connected to the base for controlling at least the fan unit.
  • 36. The apparatus of claim 30 wherein the first and second portions are capable of oscillating relative to the base.
  • 37. The apparatus of claim 30 further comprising: a pivotal connection to tilt the fan unit relative to the base.
  • 38. The apparatus of claim 37 wherein: the base includes two parts rotatably joined together, one part having two pivot arms extending away from the base, the arms pivotally connected to the first portion of the fan unit to provide the pivotal connection for tilting the fan unit relative to the base and for oscillating the fan unit relative to the second part of the base.
  • 39. The apparatus of claim 38 wherein the fan unit tilts at least about 1° in two opposite directions from an original position.
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5266004 Tsumurai et al. Nov 1993 A
5403162 Chen Apr 1995 A
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5660605 Chan et al. Aug 1997 A
6049655 Vazirani Apr 2000 A
6340283 Hedger et al. Jan 2002 B1