Combination police baton

Information

  • Patent Grant
  • 6499855
  • Patent Number
    6,499,855
  • Date Filed
    Sunday, October 29, 2000
    24 years ago
  • Date Issued
    Tuesday, December 31, 2002
    22 years ago
  • Inventors
  • Examiners
    • Husar; Stephen
    • Ton; Anabel
    Agents
    • Pedersen & Co., PLLC
    • Pedersen; Ken J.
    • Pedersen; Barbara S.
Abstract
The invention is an extendable police baton, which preferably includes several of the tools often needed by police personnel. In one embodiment, the baton comprises an extendable portion, flashlight, pepper sprayer and glass breaker with an integral, orthogonal handle, wherein the orthogonal handle contains the sprayer. In another embodiment without an orthogonal handle, the baton comprises a pepper sprayer which is located in the same end of the baton as the flashlight. Preferably, more than one handle/sprayer unit can cooperate with the same extendable baton/glass breaker unit, so that the user may select the style particularly advantageous for the user or the service in which it will be used.
Description




BACKGROUND OF THE INVENTION




1. Field of the Invention




This invention relates generally to law enforcement equipment. More specifically, this invention relates to different combinations of a flashlight, pepper sprayer and glass breaker in an extendable policeman's baton, with or without an orthogonal handle.




2. Related Art




U.S. Pat. No. 3,737,649 (Nelson et al.) discloses a combination baton-flashlight.




U.S. Pat. No. 3,776,429 (DeLucia) discloses a combination flashlight and propellant discharge device.




U.S. Pat. No. 4,186,851 (Cantor), and U.S. Pat. No. 4,223,804 (Morris et al.) disclose a pepper spray cannister in a flashlight. U.S. Pat. No. 5,446,985 (Chen), U.S. Pat. No. 5,683,168 (Teig et al.), and U.S. Pat. No. 5,795,054 (Bootv. Jr.) also disclose a pepper spray cannister in a flashlight.




U.S. Pat. No. 5,086,377 (Roberts) discloses a combination baton and propellant discharge device.




U.S. Pat. No. 401,374 (Lum) discloses ornamental features for a combination flashlight and propellant discharge device in a police baton with a bolt-on orthogonal handle.




In addition, Armament Systems and Procedures, Inc. (A.S.P.) of Appleton, Wis., U.S.A. offers a Tac-Lites® combination flashlight and extendable baton.




Still, there is a need for a compact but effective combination extendable police baton with special features of a flashlight, pepper sprayer and optional glass breaker. Also there is a need for such a combination baton with or without an integral orthogonal handle. This invention addresses that need.




SUMMARY OF THE INVENTION




The invention is a combination extendable police baton that may serve an officer's need to have various features and options quickly at hand, while keeping the officer's gun hand free. In one embodiment, the baton comprises a flashlight, pepper sprayer and optional glass breaker with an integral, orthogonal handle. In this embodiment, the pepper sprayer or other deterrent sprayer is preferably in the orthogonal handle. In another embodiment without an orthogonal handle, the baton comprises a pepper sprayer which is located in the same end of the baton as the flashlight.




The invented combination baton allows several important devices to be easily at hand for a policeman or policewoman, in a single unit, which only needs to be help with one hand, thus leaving the gun hand free. Also, the invented combination baton places both defensive and offensive tools together in the user's hand, along with a flashlight. The user keeps a light, pepper spray, and a baton for offensive or defensive action all in a ready position in one hand, while the gun hand is free. Thus, a police officer has all the commonly-used tools ready at a given time, which greatly increases his options when dealing with the uncertainties of a suspect's behavior. The officer may approach a suspect with the invented baton in one hand and his other hand ready at his gun, and he may respond to the suspect's behavior as appropriate. The user need not whisk out a pepper spray container or a baton is he senses they may be needed, which actions can be threatening and confrontational and can escalate the situation. Instead, he can hold and use the combination baton as a flashlight, which are non-threatening actions, while having the other defensive and offensive tools ready for use. Thus, the invented combination baton allows the user to be more in control of the situation, and ready for many turn of events.




Another object of the invented combination baton is to eliminate the need for several different objects (spray, baton, flashlight) to be clipped separately onto an officer's belt. This eliminates the “clutter” of the separate objects, and reduces total weight because the invention may weigh significantly less, by about 2 or 3 pounds, than the total of the separate objects. Also, for a female officer with a small waist, it is difficult to position the separate objects around her belt.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

depicts in side cross-section a first embodiment of the invention with an integral, orthogonal handle, wherein the baton is collapsed or “compacted.”





FIG. 2

depicts the embodiment of

FIG. 1

, wherein the extendable baton is extended.





FIGS. 3 and 4

depict in side cross-section a second embodiment of the invention, without an orthogonal handle, and with a pepper sprayer in the same end of the baton as the flashlight, in the compacted and extended positions, respectively.





FIGS. 5A-5C

are side, cross-section views of the alternative component parts of one embodiment of the invention, namely baton part (FIG.


5


A), flashlight with integral, orthogonal handle with pepper sprayer (FIG. B), and flashlight with pepper sprayer in the same end as the flashlight (FIG.


5


C).





FIG. 6

is a perspective view of an orthogonal-handle embodiment of the invention, illustrating one embodiment of a channel-style baton guide system.





FIG. 7

is a detail view of one embodiment of a cannister spray system for providing an easily-replaceable spray cannister in an orthogonal handle.











DESCRIPTION OF THE PREFERRED EMBODIMENTS




Referring to the Figures, these are depicted several, but not all, embodiments of the present invention, which is a combination police baton. In the following description of the preferred embodiments, the term “distal” refers to the end of the baton from which the extendable baton extends and that includes the glass breaker tip, and “proximal” refers to the end containing the flashlight. Because of the typical use of the invented baton with flashlight pointing forward from the user, the flashlight end is also referred to as the “forward” direction, and the glass breaker end is also referred to as the “rearward” direction.





FIGS. 1 and 2

depict a first embodiment of the invented combination baton


100


, which comprises a body


101


and a handle unit


102


. According to these Figures, the body


101


of the preferred embodiment comprises a generally cylindrical housing


6


, which serves as both a storage cell housing and also an extendable baton guide, and a slidably extendable baton


2


. Extendable baton


2


is generally cylindrical and hollow, and when not extended, fits smoothly within the exterior shell of housing


6


, and around the storage cell pack


19


within housing


6


. Housing


6


is also generally cylindrical and hollow, and so is capable of receiving extendable baton


2


completely, except for preferably distal end


4


, which is herein called a “first position” for the baton


2


. This way, the baton of this invention is compact, sturdy, and available in an instant to be employed into its extended configuration, which is herein called its “second position.” Preferably with a quick wave of the baton, an action which might be called “whipping out the baton,” the centripetal force of the wave causes extendible baton


2


to push button


5


down out of the way and to slide all of the way out to an extended second position. As the extendable baton


2


slides out, it is guided by a mechanism that prevents rotation of the baton


2


relative to the housing


6


and, in doing so, prevents jamming and malfunctioning. The preferred guide mechanism, illustrated in

FIG. 6

, is a channel system which includes a longitudinal channel


112


on a side of the extendable baton


2


that receives and slides along a cooperating protrusion (not shown) in the housing


6


on the inner surface of the housing


6


. The channel


112


extends from near the distal end


4


to near but not all the way to the proximal end of the baton


2


. This way, when the baton


2


is fully extended, its sliding is permitted until the baton is most of the way out of the housing


6


, except for a few inches required to keep the housing


6


—baton


2


connection sturdy and reliable. The sliding extension of the baton


2


is preferably limited by the protrusion on the housing reaching the end (proximal end) of the channel


112


, so that the baton


2


can move no farther out from the housing. Also, when the extendable baton


2


has reached its farthest-out position, button


5


pops up into a retaining hole


25


to lock the baton in the extended position until the user wishes to compact the baton. To compact the baton, baton lock button


5


may be pressed down to allow the extendible baton


2


to clear the button and draw back into housing


6


.




Another preferred feature of the body


101


of the baton


100


is a glass breaker member, which preferably may be used by punching the extendable baton end of the baton


100


against glass. The glass breaker member preferably comprises glass breaker sleeve


23


with a sharp tip


3


, and this sleeve


23


is secured or retained at its proximal end to the distal end of storage cell housing/baton guide


6


. At the proximal end of housing


6


is a rebound spring


30


which permits a small amount relative travel between glass breaker sleeve


23


and extendable baton


2


, but which biases the extendable baton


2


to the position shown in FIG.


1


. Rebound spring


30


is a spring or wave washer or other biasing device that may serve to serve this function. In the biased position of

FIG. 1

, tip


3


is in the opening


11


, but protected by the surrounding surfaces of distal end


4


so that tip is not a danger to the user or a bystander. This way, the baton may be used as an effective tool for breaking panes of glass, the punch tip


3


acting as a sharp point of contact to initially perforate the glass.




More specifically, in the preferred embodiment of

FIGS. 1 and 2

, distal end


4


extends a short distance from the housing


6


, for example, 1-2 inches, to provide the glass breaker features of the invented baton. Extendable baton


2


has an opening


11


at its distal end


4


for receiving glass breaker punch tip


3


. Punch tip


3


is configured to extend slightly into opening


11


, but to not extend out from the opening


11


, when extendable baton


2


is retracted. Punch tip


3


is the distal end of a glass breaker sleeve


23


, which is a hollow, preferably generally cylindrical sleeve received inside and coaxial with extendable baton


2


. Sleeve


23


extends from near distal end


4


substantially all the way to proximal end


14


, where it is retained from axial movement by bulb holder


21


. Extendible baton


2


is slidably received in housing


6


and is also slidable relative to sleeve


23


, so that when distal end


4


is impacted, extendible baton


2


slides axially forward relative to housing


6


and sleeve


23


, further into housing


6


to a position herein referred to as a “third position” wherein the tip


3


is exposed, if only for a second, for use. As a result, distal end


4


moves to relative to punch tip


3


so that tip


3


, in effect, moves from its protected position just inside opening


1


to a glass-breaking position protruding slightly from opening


11


. This way, with a quick punch at a glass pane with the distal end


4


of the combination baton


100


, the tip


3


“comes out” to punch into the pane. Assuming the glass is tempered safety glass, a punch by the tip


3


will perforate the pane and normally cause it to shatter. Thus, the user may easily open, for example, a window of an automobile at an accident site. In this first embodiment, near the flashlight end of the combination baton


100


is handle unit


102


, which comprises exterior shell and handle


8


. Orthogonal baton handle


8


preferably extends integrally from exterior shell


116


to form unit


102


. Handle


8


extends perpendicularly and smoothly from exterior shell


116


, at sturdy and preferably non-flexing comer


26


. Exterior shell


116


coaxially surrounds the proximal ends of the components that comprises the body


102


, that is, housing


6


, baton


2


and sleeve


23


. Preferably, exterior shell


116


and the proximal end of housing


6


connect by threaded connection


26


, so that housing


6


and shell


116


can be unscrewed from each other by opposite relative rotational motion. Alternatively, the shell may be connected by other detachable systems that allow the handle unit


102


to be detachable from the body


101


. This way, handle


8


is securely and safely connected to housing


6


, until mechanisms in the baton


100


must be replaced or repaired, or until the user wishes to change the handle


102


out for another style of handle unit.




By unscrewing the housing from the shell


116


, one may reach the lamp bulb


18


(preferably quartz halogen) and battery pack


19


for replacement, and may send the shell/handle unit to the appropriate party for refill of the reservoir


120


with pepper spray refill. The location of handle


8


on housing


6


is determined from balance, weight and center-of-gravity considerations. Preferably, handle


8


is about 30-40% of the distance from the flashlight end to the glass breaker end of the combination baton


100


.




On the handle unit


102


, preferably near the middle of the baton


100


, are contacts


12


for quick-re-charging the storage cells


19


, which are contained inside housing


6


. The baton


100


includes wiring and other mechanisms necessary to connect the contacts


12


, cells


19


, flashlight switch (discussed below), and also the flashlight mechanism at the proximal end


14


of the baton


100


. The flashlight mechanism may include shatter-proof lens


16


, reflector


17


, bulb


18


and bulb holder/conductors/insulators/supports/spring mechanism


21


as conventionally necessary to enable a conventional flashlight to operate at this invented location. Optionally, the front end of the handle unit


102


, where the lens


16


is located, may include a cap or other means for removing the lens to reach the bulb


18


.




Handle


8


is cylindrical and hollow, and receives in its interior reservoir


120


pepper spray liquid


20


. At the top end of handle


8


is combination cover/flashlight switch


9


. Cover/switch


9


both controls the flashlight and prevents unintentional discharge of pepper spray from handle


8


. When slid forward, cover/switch


9


turns the flashlight feature on, and uncovers pepper spray valve button


15


to make the pepper spray feature available. When the cover/switch


9


is slid rearward, it turns the flashlight off, and rests in a position that covers the valve button


15


, preventing access to the button and, hence, accidental discharge of the spray. The switching and wiring mechanisms necessary to operatively connect the flashlight bulb in the proximal end of the baton


100


to the cover/switch


9


at the outer end of the handle


8


, and likewise to the cells and contacts, may be installed in handle


8


, through unit


102


and mechanism


21


, as will be within the skill in the art after seeing the disclosure of this invention.




Optionally, there may be a system that allows the user to uncover the button


15


for use of the spray, while the flashlight remains off. For example, the cover/switch


9


may be adapted to have a third position which uncovers the spray valve button but does not turn on the flashlight. Or, an officer who is using the invented baton during the day, may unscrew the bulb or other flashlight connection to prevent the flashlight from shining.




The configuration of the invented baton


100


, with the control for both the flashlight and the pepper spray being on/in the handle


8


makes the invented baton


100


especially beneficial to the user. This way, the user may grip the baton handle


8


in his one hand, and the controls are immediately available to his fingers or thumb. For example, the user may grip the baton


100


, pointing the flashlight at a suspected criminal or at a suspected crime scene, and at the same time of this un-threatening and non-confrontational act, the pepper spray is immediately available with just a finger or thumb movement. By pressing on the spray valve button, pepper spray may be discharged from the front of handle


8


through valve button


15


and through spray port


10


. Also, whether or not the flashlight is being used, the invented baton


100


may be used as a defensive tool (gripped in the hand at handle


8


with the distal portion of the baton


100


extending below the arm along the forearm for a shield), or the baton


100


may be used offensively (with the baton grasped in the hand but held across the chest and ready to “whip” the baton out to extend the extendable baton). Either in defensive or offensive mode, the pepper spray mechanism is still immediately available by action of the hand gripping the handle. Thus, many situations are controlled to be safer and more successful—a suspected criminal is not as likely to violently react to an officer “whipping” out a pepper spray cannister from his belt, yet the officer is better protected because the spraying mechanism is already pointed at the suspect from the beginning of the situation.




In the

FIGS. 1 and 2

embodiment, the cap


28


of the handle


8


may be unscrewed to reveal the internals of the spraying mechanism and for refill, if needed. As discussed below, several different configurations may be used for the spray mechanism, for example, refillable reservoir inside the handle, or replaceable cartridge inside the handle. In addition, handle


8


may include a slot


38


at the forward side of the handle for holding the officer's identification card. This way, the officer has the necessary ID easily available to show to someone, without the officer having to reach for it, which reaching could again be construed by mistake as a threatening action or could place the officer off-guard or distracted.





FIGS. 3-4

depict a second embodiment of the invention. According to these Figures, the baton


110


of the invention has the same body


101


as the

FIGS. 1 and 2

baton


100


. Therefore, the same body structure and function are supplied to baton


110


by supplying the same baton guide/housing


6


, extendable baton


2


, opening


11


, glass breaker punch tip


3


, and lock button. Also, storage cell pack


19


, contacts


12


, lens


16


, reflector


17


, bulb


18


and bulb holder/conductors/insulators/supports/springs etc.


21


are the same.




In this second embodiment


110


, however, the handle unit


122


is different from the handle unit


102


of baton


100


, but is connected to the body


101


by the same connection system


27


as handle unit


102


to body


101


. Thus, the handle units


102


,


122


are interchangeable on the body


101


, depending on the preference of the user or the police force purchasing them or the particular situation. On handle unit


122


, there is no orthogonal handle. Instead, the handle unit


122


includes a flashlight end


132


and a coaxial handle


118


. Instead of being disposed in the handle, the deterrent spray system is located within the flashlight end


132


of the baton, preferably circumscribing the conductors/insulators/supports/springs, etc., and reflector of the flashlight. Inside the flashlight end


132


is a reservoir


220


for receiving the spray liquid


20


, and in fluid communication with the reservoir is a sprayer system including a flop tube with weighted end


140


and spray valve


15


and wand


10


. Also, combination cover/flashlight switch


9


and pepper spray valve button


15


, which in this embodiment are also located in the flashlight end of the baton, operate the same as in the previously discussed embodiment. With this handle unit


122


, the user grasps the handle


118


, which preferably surrounds the outer circumference of the baton


110


in an ergonomic shape, to point the flashlight end


132


(with cover/switch


9


in the on, spray-enabled position) at a suspect or at a situation. With a thumb or finger of the same hand, the user may, if need be, actuate the spray valve to discharge the spray liquid.




With the invented handle units


102


,


122


, the spray systems are positioned so that there is a very high probability that they will work well. Prior art spray devices in batons typically fail frequently because the spray mechanism is in tilted or tipped positions (parallel to the longitudinal axis of the baton) in which it does not work very well—the tube does not stay in the liquid. With the invented orthogonal handle unit, the user controls the position of the spray mechanism and the tube in the liquid, because the tube is kept parallel to the hand grasping the handle, which is normally upright. The user can very clearly know whether the sprayer will work because all he/she has to do is keep the handle


8


upright, and that is the preferred position for use of the invented baton anyway. In the coaxial design, the “flopping” tube is used to ensure the tube stays in the liquid, and the ergonomic handle design also tends to keep the flashlight and spray wand in the proper position.





FIGS. 5A

,


5


B, and


5


C further illustrate the modular approach to the invented baton


100


,


110


.

FIG. 5A

shows the standard body


101


of the invented baton, with the extendable baton


2


in the extended position.

FIG. 5B

shows an orthogonal handle unit


102


. FIG. SC shows a coaxial handle unit


122


. Either of the handle units in

FIGS. 5B

or


5


C may be used with the same body (FIG.


5


A), giving options for the user or the police force.




Optionally, as shown in the detail of

FIG. 7

, a cannister system may be used in the baton of the invention. Particularly well-adapted to the orthogonal handle unit


102


, the handle


8


may be adapted to receive a cannister


150


pre-filled with liquid spray. Preferably, the cannister


150


has an outer generally cylindrical surface to slide into, and fit closely in, the inside surface of the handle. Preferably, also, the cannister


150


has a top end


152


that connects with the cap of the handle or other surface of the handle. This connection may comprise, for example, the cannister wall threading to the cap, as shown in

FIG. 7

as threaded connection


155


, or a snap-fit or other frictional and secure connection. This secure connection ensures that the proper cannister with proper contents is being used in the baton, and also that the cannister will not become dislodged in the handle and possibly be damaged or inoperable. Preferably, the secure connection does not simply comprise a fluid stem of the cannister being inserted into the spray valve button, but rather a connection between the cannister wall/housing and the cap/handle wall. Another benefit of the preferred secure connection between cannister and cap, is that removal of the cap will also pull the cannister out of the handle for replacement. This way, the cap becomes a handling mechanism for the cannister, to ensure safety and sureness in installation and use.



Claims
  • 1. A combination baton for law enforcement personnel, the combination baton comprising a body and a handle unit, the body comprising:a housing and an extendable baton slidably connected to the housing so that the extendable baton slides on a longitudinal axis to a compact first position substantially inside the housing, and an extended second position out from the housing; and the handle unit comprising a handle and a flashlight mechanism opposite the extendable baton, wherein the handle comprises an elongated member extending from the handle unit generally orthogonally to the longitudinal axis, an interior reservoir for containing deterrent spray and a spray valve mechanism for dispensing the deterrent spray, and a flashlight on-off switch electrically connected to the flashlight mechanism, wherein the flashlight on-off switch comprises a member that is slidable to cover the spray valve mechanism when the switch is in an off position.
  • 2. The combination baton of claim 1, wherein the handle unit is detachable from the body.
  • 3. A combination baton for law enforcement personnel, the combination baton comprising a body and a handle unit, the body comprising:a housing and an extendable baton slidably connected to the housing so that the extendable baton slides on a longitudinal axis to a compact first position substantially inside the housing, and an extended second position out from the housing; and the handle unit comprising a handle and a flashlight mechanism opposite the extendable baton, wherein the handle comprises an elongated member extending from the handle unit generally orthogonally to the longitudinal axis, wherein the handle has an interior space for containing a deterrent spray cannister, and a spray valve mechanism for dispensing the deterrent spray, and a flashlight on-off switch electrically connected to the flashlight mechanism, wherein the flashlight on-off switch comprises a member that is slidable to cover the spray valve mechanism when the switch is in an off position.
  • 4. The combination baton of claim 3, wherein the handle unit is detachable from the body.
  • 5. A combination baton for law enforcement personnel, the combination baton comprising a body and a handle unit, the body comprising:a housing and an extendable baton slidably connected to the housing so that the extendable baton slides on a longitudinal axis to a compact first position substantially inside the housing, and an extended second position out from the housing; and the handle unit comprising a handle and a flashlight mechanism opposite the extendable baton, wherein the handle comprises an elongated member extending from the handle unit generally orthogonally to the longitudinal axis, the handle comprising a deterrent spray mechanism; wherein the body comprises a pointed glass breaking member with a pointed tip, and wherein the extendable baton has a hole and slides relative to the pointed glass breaking member to slide from said position to a third position, farther inside the housing than the first position, wherein the pointed tip extends through the hole and is exposed.
  • 6. A combination baton for law enforcement personnel, the combination baton comprising a body and a handle unit, the body comprising:a housing and an extendable baton slidably connected to the housing so that the extendable baton slides on a longitudinal axis to a compact first position substantially inside the housing, and an extended second position out from the housing; and the handle unit coaxial with the body and comprising a flashlight mechanism opposite the extendable baton, wherein the flashlight mechanism comprises a deterrent spray mechanism and a flashlight on-off switch; and wherein the handle unit is detachable from the body; wherein tie flashlight on-off switch comprises a member that is slidable to cover the spray valve mechanism when the switch is in an off position.
  • 7. A combination baton for law enforcement personnel, the combination baton comprising a body and a handle unit, the body comprising:a housing and an extendable baton slidably connected to the housing so that the extendable baton slides on a longitudinal axis to a compact first position substantially inside the housing, and an extended second position out from the housing; and the handle unit coaxial with the body and comprising a flashlight mechanism opposite the extendable baton, wherein the flashlight comprises a deterrent spray mechanism; and wherein the handle unit is detachable from the body; and wherein the body comprises a pointed glass breaking member.
  • 8. The combination baton of claim 7, wherein the pointed glass breaking member has a pointed tip, and wherein the extendable baton has a hole and slides relative to the pointed glass breaking member to slide from said position to a third position, farther inside the housing than the first position, wherein the pointed tip extends through the hole and is exposed.
  • 9. A combination baton for law enforcement personnel, the combination baton comprising a body and a plurality of handle units, wherein the handle units are interchangeably connectable to the body, the body comprising:a housing and an extendable baton slidably connected to the housing so that the extendable baton slides on a longitudinal axis to a compact first position substantially inside the housing, and an extended second position out from the housing; and wherein a first of said plurality of handle units comprises a handle and a flashlight mechanism opposite the extendable baton, wherein, the handle comprises an elongated member that, when said first of said plurality is connected to the body, extends from the handle unit generally orthogonally to the longitudinal axis, and wherein the handle comprises a deterrent spray mechanism.
  • 10. The combination baton as in claim 9, wherein a second of said plurality of handle units detachable connects to the body coaxially with the body, comprises a flashlight mechanism opposite the extendable baton, and comprises a deterrent spray mechanism.
  • 11. A handle unit for detachable connection to a law enforcement baton, the handle unit comprising a detachable connection mechanism for connecting to a law enforcement baton, an interior space, a deterrent spray cannister, and a spray valve mechanism, a flashlight switch that is movable to positions comprising a first position which is adapted to turn on a flashlight and to reveal the spray valve mechanism, and a second position which is adapted to turn off a flashlight and to cover the spray valve mechanism.
  • 12. A handle unit as in claim 11 wherein the handle unit is adapted to connect to a law enforcement baton so that the deterrent spray cannister is orthogonal to the baton.
Parent Case Info

This application claims priority from my prior provisional application serial No. 60/162,251, entitled Combination Police Baton, filed Oct. 29, 2000, herein incorporated by reference.

US Referenced Citations (14)
Number Name Date Kind
3737649 Nelson et al. Jun 1973 A
3776429 DeLucia Dec 1973 A
4186851 Cantor Feb 1980 A
4223804 Morris et al. Sep 1980 A
5086377 Roberts Feb 1992 A
5287255 Strodtman Feb 1994 A
5405134 Wolfram Apr 1995 A
5446985 Chen Sep 1995 A
5683168 Teig et al. Nov 1997 A
5795054 Booty, Jr. Aug 1998 A
D401374 Lum Nov 1998 S
6139165 Crowe Oct 2000 A
6199997 Ousten et al. Mar 2002 B1
6386726 Macierowski et al. May 2002 B1
Provisional Applications (1)
Number Date Country
60/162251 Oct 2000 US