Abstract:
A tank holding bracket mechanism positionable within a seat back of an emergency vehicle for holding therein of an air tank usable for emergency breathing situations which is attachable to the back of emergency personnel such as firefighters while sitting on the vehicle seats during transport. The holding bracket includes a pivoting head movable between an opened position allow entry of removal of a tank from the bracket mechanism and a closed position retaining a tank with respect to the bracket mechanism. A locking mechanism is adapted to selectively lock the head in the closed position to prevent release of the tank responsive to certain vehicle parameters, such as disengagement of an emergency brake or movement of the vehicle transmission from the park mode. The locking mechanism can be externally activated manually or electrically such as with a powered solenoid.

Description:
[0001]    The present application hereby formally claims priority of currently pending U.S. Provisional Patent Application No. 61/072,689 filed Apr. 2, 2008 on a “Externally Activated Locking Seat Bracket for Self-Contained Breathing Apparatus” filed by inventor Michael P. Ziaylek, the inventor listed herein and said referenced provisional application is hereby formally incorporated by reference as an integral part of the present application. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    Whenever emergency personnel are traveling in emergency vehicles such as fire trucks or the like it is often necessary to provide self-contained breathing apparatus including an relatively heavy air tank secured to their body for the purpose of providing an air supply under emergency conditions such as at a fire location. A specific construction needs to be provided for the back of the seat in such vehicles such that the personnel can be firmly held in place by a seat belt and shoulder harness in a conventional manner in a seat while providing room for the tank to be held within the seat back. Secure locking of a heavy air tank in place in the mounting bracket of the seat back is an important consideration. The present invention provides a unique means for facilitating locking and unlocking of an air tank with respect to a mounting bracket when positioned on the back of a user or ready to be positioned on the back of a user within a tank receiving zone defined in the overall seat configuration of an emergency vehicle. A safety locking mechanism is included which will assure that the tank is locked to the mounting bracket securely unless the vehicle parking brake is engaged or unless the vehicle transmission is in the Park position or responsive to other desired parameters. With this added level of safety, it can be assured that the vehicle will be stationary at all times when the air tank is disengaged from the mounting bracket. Such heavy tanks can become dangerous moving objects within a vehicle unless they are firmly secured whenever the vehicle is moving for any reason and especially if the vehicle is involved in a motor vehicle accident. 
         [0004]    2. Description of the Prior Art 
         [0005]    A number of prior art locking devices have been utilized to secure air tanks to seat backs for various purposes such as shown in U.S. Pat. No. 2,431,698 patented Dec. 2, 1947 to H. Lombard on a “Removable Mounting Installation”; and U.S. Pat. No. 2,615,238 patented Oct. 28, 1952 to W. Highwood on a “Tank Clamp Support Holder”; and U.S. Pat. No. 3,194,529 patented Jul. 13, 1865 to G. R. Brock and assigned to Sterling Precision Corporation; and U.S. Pat. No. 3,547,391 patented Dec. 15, 1970 to D. E. Johnson on a “Quick Release Support For Rescue Breathing Apparatus”; and U.S. Pat. No. 3,565,384 patented Feb. 23, 1971 to L. A. Lockwood and assigned to Bemzomatic Corporation on a “Bracket For Holding And Clamping Gas Cylinder Type Fire Extinguisher Tanks”; and U.S. Pat. No. 3,603,550 patented Sep. 7, 1971 to C. D. Byrd and assigned to Lacy J. Miller Machine Company, Inc. on a “Quick Release Support”; and U.S. Pat. No. 3,667,714 patented Jun. 6, 1972 to T. Ziaylek, Jr. on a “Tank Support”; and U.S. Pat. No. 3,780,972 patented Dec. 25, 1973 to J. C. Brodersen on a “Mounting Apparatus For Gas Containers”; and U.S. Pat. No. 3,823,907 patented Jul. 16, 1974 to T. Ziaylek, Jr. on a “Positive Locking Device”; and U.S. Pat. No. 3,971,591 patented Jul. 27, 1976 to J. Ziaylek and assigned to Ziamatic Corporation on a “Quick-Seat”; and U.S. Pat. No. 4,213,592 patented Jul. 22, 1980 to D. J. Lingenfelser and assigned to Caterpillar Tractor Co. on a “Bracket Assembly For Mounting Fire Extinguishers Thereon”; and U.S. Pat. No. 4,379,541 patented Apr. 12, 1983 to D. M. Harkness on a “Holder For A Container”; and U.S. Pat. No. 4,505,448 patented Mar. 19, 1985 to C. P. Massie on a “Bracket For Fire Extinguishers”; and U.S. Pat. No. 4,586,687 patented May 6, 1986 to T. Ziaylek, Jr. on an “Air Tank Support Of The Quick Release Type”; and U.S. Pat. No. 4,848,714 patented Jul. 18, 1989 to T. Ziaylek, Jr. et al on a “Mounting Plate With Rollers”; and U.S. Pat. No. 5,213,392 patented May 25, 1993 to J. M. Bostrom et al on a “Seat Construction”; and U.S. Pat. No. 5,314,233 patented May 24, 1994 to J. M. Bostrom et al on a “Seat Construction Having A Mechanism For Storing A Tank”; and U.S. Pat. No. 5,681,080 patented Oct. 28, 1997 to G. M. Pond et al and assigned to Seats, Inc. on a “Vehicle Seat For Person Wearing Self-Contained Breathing Apparatus”; and U.S. Pat. No. 5,803,544 patented to W. R. Block et al on Sep. 8, 1998 and assigned to H. O. Bostrom Company, Inc. on a “Seat Construction With Removable Side Cushions”; and U.S. Pat. No. 5,934,749 patented Aug. 10, 1999 to G. M. Pond et al and assigned to Seats, Inc. on a “Vehicle Seat With Removable Bolsters And pivoting Headrest Members”; and U.S. Pat. No. 5,975,475 patented Nov. 2, 1999 to G. S. Chaplin on a “Fire Extinguisher Holder”; and U.S. Pat. No. 6,086,312 patented Jul. 11, 2000 to M. P. Ziaylek et al on a “Tank Handling Apparatus”; and U.S. Pat. No. 6,220,557 patented Apr. 24, 2001 to M. P. Ziaylek et al and assigned to Michael P. Ziaylek, Theodore Ziaylek, Jr. and Theodore P. Ziaylek on a “Mounting Bracket Means For Detachably Supporting A Generally Cylindrically-Shaped Member Upon A Wall Structure”; and U.S. Pat. No. 6,543,736 patented Apr. 8, 2003 to B. J. Field and assigned to Pacific Safety Products Inc. on a “Quick Release Supporting Apparatus For A Canister”; and U.S. Pat. No. 6,601,923 patented Aug. 5, 2003 to G. Pond et al and assigned to Seats Incorporated on an “Emergency Vehicle Seat With Integrated Seat Belt”; and U.S. Pat. No. 6,655,745 patented Dec. 2, 2003 to J. A. Fohrenkamm et al and assigned to H. O. Bostrom Company, Inc. on an “Emergency Vehicle Seat With Integrated Seat Belt”; and U.S. Pat. No. 6,702,242 patented Mar. 9, 2004 to T. Ziaylek, Jr. et al on a “Releasable Tank Holding Assembly Securable To A Hollow Seat Back To Facilitate Detachable Securement Of A Tank Thereinto”; and U.S. Pat. No. 6,769,659 patented Aug. 3, 2004 to G. A. Martello on a “Bottle Bracket”; and U.S. Pat. No. 6,830,226 patented Dec. 14, 2004 to B. J. Field and assigned to Pacific Safety Products Inc. on a “Quick Release Supporting Apparatus For A Canister”; and U.S. Pat. No. 6,883,766 patented Apr. 26, 2005 to M. P. Ziaylek et al on a “Quick Release Mechanical Bracket”; and U.S. Pat. No. 6,926,243 patented Aug. 9, 2005 to M. P. Ziaylek et al on a “Mounting Bracket With An Ejection Means For Detachable Retaining Of A Cylindrical Tank Member”; and United States Publication No. US 2003/0038525 A1 published Feb. 27, 2003 to G. Pond et al and assigned to Seats, Inc. on an “Emergency Vehicle Seat With Integrated Seat Belt”; and U.S. Design Pat. No. D222,527 patented Nov. 2, 1971 to T. Ziaylek, Jr. on a “Bracket For Use With Lifesaving Equipment”; and U.S. Design Pat. No. D237,357 patented to T. Ziaylek, Jr. and assigned to Ziamatic Corporation on Oct. 28, 1975 on a “Tank Support Bracket For Lifesaving Equipment”; and U.S. Design Pat. No. D245,929 patented Sep. 27, 1977 to R. J U. Montambo and assigned to The Ansul Company on a “Fire Extinguisher Bracket”; and U.S. Design Pat. No. D264,935 patented Jun. 15, 1982 to T. Ziaylek, Jr. and assigned to Ziamatic Corporation on a “Combined Support And Display Bracket For A Self-Contained Breathing Apparatus”; and U.S. Design Pat. No. D265,287 patented Jul. 6, 1982 to T. Ziaylek, Jr. on a “Support Bracket For Biomarine Breathing Apparatus”; and U.S. Design Pat. No. D267,227 patented Dec. 14, 1982 to T. Ziaylek, Jr. and assigned to Ziamatic Corporation on a “Support Bracket For A Gas Cylinder”; and U.S. Design Pat. No. D298,704 patented Nov. 29, 1988 to T. Ziaylek, Jr. on a “Seat For Use Primarily In Emergency Vehicles”; and U.S. Design Pat. No. D303,738 patented Oct. 3, 1989 to T. Ziaylek, Jr. on a “Rotatable Cylinder Holder”; and U.S. Design Pat. No. D314,325 patented Feb. 5, 1991 to T. Ziaylek, Jr. et al on a “Clamping Set Of Bracket Arms For Supporting Tubular Objects”; and U.S. Design Pat. No. D319,778 patented Sep. 10, 1991 to T. Ziaylek, Jr. on a “Vertical Support Brace Bracket Panel For Holding Tubular Objects”; and U.S. Design Pat. No. D347,735 patented Jun. 14, 1994 to T. Ziaylek, Jr. et al on a “Quick Release Support Tank Bracket”; and U.S. Design Pat. No. D390,367 patented Feb. 10, 1998 to R. F. Demski et al and assigned to Seats, Inc. and Pierce Manufacturing Inc. on a “Vehicle Seat”; and U.S. Design Pat. No. D394,381 patented May 19, 1998 to T. Ziaylek, Jr. et al on a “Tank Bracket”; and U.S. Design Pat. No. D419,317 patented Jan. 25, 2000 to G. M. Pond et al and assigned to Seats, Inc. on a “Seat”; and U.S. Design Pat. No. D424,414 patented May 9, 2000 to M. P. Ziaylek et al and assigned to Michael P. Ziaylek, Theodore Ziaylek, Jr. and Theodore P. Ziaylek on an “Adjustable Mounting Bracket For A Cylindrical Member”; and U.S. Design Pat. No. D434,495 patented Nov. 228, 2000 to L. J. Whalen et al and assigned to Wheeled Coach Industries, Inc. on an “Oxygen Bottle Holder”; and U.S. Design Pat. No. D480,294 patented Oct. 7, 2003 to T. Ziaylek, Jr. et al on a “Releasable Tank Holding Assembly”; and U.S. Design Pat. No. D494,049 patented Aug. 10, 2004 to M. P. Ziaylek et al on a “Mounting Bracket With Ejection Mechanism For Holding A Cylindrical Tank”; and U.S. Design Pat. No. D494,453 patented Aug. 17, 2004 to M. P. Ziaylek et al on a “Mechanical Locking Bracket For Holding Cylinders”. 
       SUMMARY OF THE INVENTION 
       [0006]    The present invention provides an externally activated locking mounting bracket apparatus for holding a tank in a vehicle seatback which includes a bracket attachable within a vehicle seatback and defining a tank receiving zone means therewithin for selectively receiving and retaining of a tank therewithin. 
         [0007]    A pivoting head is included pivotally mounted with respect to the bracket at a position adjacent the tank receiving zone and movable between a closed position for retaining of the tank within the tank receiving zone and an opened position for allowing a tank to be placed within and/or removed from the tank receiving zone. A head spring device is preferably operatively attached to the bracket and to the pivoting head for urging of the pivoting head from the open position into the closed position. 
         [0008]    A locking mechanism is also included attached to the bracket which is movable to be selectively engageable with respect to the pivoting head responsive to the pivoting head being in the closed position for locking of the pivoting head in the closed position to prevent movement thereof from the closed position toward the opened position. 
         [0009]    The locking mechanism includes in detail a locking cam arm pivotally mounted with respect to the bracket at a position adjacent the pivoting head. The locking cam arm is pivotally movable to a locking position in engagement with the pivoting head while positioned in the closed position to prevent movement thereof from the closed position toward the opened position. The locking cam arm also is movable to a releasing position wherein the locking cam arm is not in engagement with respect to the pivoting head in order to allow movement thereof from the closed position toward the opened position. The locking mechanism further includes a locking cam arm spring operatively attached with respect to the bracket and operatively attached with respect to the locking cam arm for continuously urging thereof toward the locking position as the steady state position thereof. Finally the locking mechanism includes a drive, such an electrical solenoid or the like, operatively attached with respect to the locking cam arm. This drive is responsive to actuation thereof to power movement of the locking cam arm to the releasing position thereof to disengage the locking cam arm from the pivoting head to allow movement of the pivoting head away from the closed position and toward the opened position thereof. The drive is operative responsive to deactivation thereof to power movement of the locking cam arm toward the locking position thereof to be capable of abutment with the pivoting head when positioned in the closed position thereof for facilitating locking of the pivoting head in the closed position. 
         [0010]    It is an object of the externally activated locking seat bracket for a self-contained breathing apparatus of the present invention to firmly hold tanks in place to prevent injury to the wearer which could result from a motor vehicle accident while such tanks are not fully secured in position. 
         [0011]    It is an object of the externally activated locking seat bracket for a self-contained breathing apparatus of the present invention to firmly secure any air tanks to the seat backs within the vehicle whenever the vehicle is moving. 
         [0012]    It is an object of the externally activated locking seat bracket for a self-contained breathing apparatus of the present invention to provide a convenient and quick means for disengagement from the seat. 
         [0013]    It is an object of the externally activated locking seat bracket for a self-contained breathing apparatus of the present invention to provide a redundant safety feature including a pivotally moveably head member which can be securely locked in place selectively and be externally controlled such as by monitoring the status of the vehicle parking brake or transmission. 
         [0014]    It is an object of the externally activated locking seat bracket for a self-contained breathing apparatus of the present invention which allows the tank to be positioned into the tank holding zone or removed therefrom by physical urging of the body of the tank into abutment with the head bracket. 
         [0015]    It is an object of the externally activated locking seat bracket for a self-contained breathing apparatus of the present invention to provide a useful and safe seat back configuration for emergency personnel while confined by a seat belt and/or shoulder harness in an emergency vehicle while wearing an air tank suspended from the person&#39;s back. 
         [0016]    It is an object of the externally activated locking seat bracket for a self-contained breathing apparatus of the present invention which is safe and convenient to use. 
         [0017]    It is an object of the externally activated locking seat bracket for a self-contained breathing apparatus of the present invention which is easily detached from the seat. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0018]    While the invention is particularly pointed out and distinctly described herein, a preferred embodiment is set forth in the following detailed description which may be best understood when read in connection with the accompanying drawings, in which: 
           [0019]      FIG. 1  is a three-quarter front perspective of an externally activated locking self-contained breathing apparatus seat mounting bracket showing the pivoting head in the opened position; 
           [0020]      FIG. 2  is a top three-quarter perspective of the configuration shown in  FIG. 1  with the pivoting head in the closed position; 
           [0021]      FIG. 3  is an exploded view of the apparatus of the present invention showing the locking mechanism of the present invention in the locked position; 
           [0022]      FIG. 4  is an assembly drawing of an alternative embodiment of the apparatus of present invention showing the internal construction of the locking mechanism; 
           [0023]      FIG. 5  is a front perspective view of the configuration shown in  FIG. 1  in the unlocked position; 
           [0024]      FIG. 6  is a perspective view of the detailed construction of an embodiment of the locking cam arm; and 
           [0025]      FIG. 7  is an assembly drawing of an alternative embodiment of the apparatus of present invention showing the external construction of the locking mechanism. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0026]    The present invention provides a bracket  10  designed to be positioned within the back of a seat of a vehicle, usually an emergency vehicle, which can hold a tank  8  such as a self-contained breathing apparatus air tank therein conveniently such that it could be quickly donned by an emergency person such as firefighter when sitting in the vehicle as the vehicle reaches the site of the fire emergency. It is important that the tank  8  be securely held in place within the seat back during any movement of the vehicle because such a loose tank could cause injury to passengers in the case of a motor accident or in the case where the tank would become loose within the vehicle even during normal travel. For this purpose a unique locking configuration for holding of a tank holding bracket in the locked position securing retaining the tank with respect to the bracket  10  is provided. 
         [0027]    The structure of this embodiment of the bracket includes a main backing plate  11  which extends generally vertically and includes a base  12  defining a base cup  14 . A head bracket  15  is positioned in the upper portion of the bracket  10  and includes a rotating or pivoting head  16  designed to move downwardly to a closed position in engagement with the tank when positioned in the tank receiving zone  13  adjacent to the main backing plate  11  and between the pivoting head  16  and the base cup  14 . The pivoting head is also movable upward from the closed position to an opened position if desired to facilitate removal of a tank  8  from the tank receiving zone means  13  defined within the bracket  10  or to allow placement of a tank  8  into tank receiving zone  13 . 
         [0028]    Normally such tanks are cylindrical in shape, rounded on the bottom and rounded in the upper portion and the upper portion includes a protruding head which can vary in basic configuration based on manufacturing design. The head area is usable to facilitate distribution and refilling of the container during usage. The apparatus of the present invention is designed to hold these tanks in an inverted manner such that the top of the tank  8  extends downwardly into the base cup  14  of the base  12  and the bottom portion of the tank extends upwardly such that it can be easily grasped and held in place by the pivoting head  16 . 
         [0029]    With the present invention the pivoting head  16  preferably is maintained in the horizontal orientation and includes a head biasing means such as a head spring means  17  positioned between the head bracket  15  and the pivoting head  16  in such a manner as to continuously bias the head toward the down or closed position as shown best in  FIGS. 2 ,  3  and  4 . When it is desired to move a tank  8  into the tank receiving zone  13  initially the head of the tank is placed into the base cup  14 . The tank is then rotated upwardly such that the body of the tank  8  impacts the front edge of the rotating or pivoting head  16 . This will cause the head means  16  to pivot from the closed head position  44  toward the opened head position  46  as shown best in  FIGS. 1 and 5 . This movement is caused by the inertia of the tank  8  as it contacts the head  16  causing it to move upwardly slightly in order to allow the tank  8  to pass thereunder into the tank receiving zone  13 . As soon as the tank  8  has passed thereunder the head  16  will pivot again downwardly due to the steady state pressure exerted by the head spring means  17  in such a manner as to surround the upwardly extending bottom end of tank  8  and thereby retain it in the tank receiving zone means  13 . 
         [0030]    One of the unique aspects of the present invention is in the inclusion of a novel locking mechanism  54  for selectively locking of the pivoting head  16  in the closed head position  44  as shown in FIGS.  2 , 3  and  4 . The actuation of this locking mechanism will prevent the head  16  from rotating away from the closed head position  44  toward the opened head position  46  when removal of a tank  8  from the tank receiving zone  13  is undesirable such as when the emergency vehicle is traveling to the location of an emergency. 
         [0031]    This locking system is powered to unlock by a locking solenoid  38  which is preferably electrically powered includes an output rod  40  extending outwardly therefrom. Solenoid  38  is powered by electrical power lines  42  extending therefrom which can be connected to various portions of the vehicle to facilitate control. One of the most advantageous orientations is to connect the power lines  42  of locking solenoid  38  with respect to the parking brake switch of a vehicle. Whenever the parking brake switch is in the on position the solenoid  38  will be allow the locking cam arm means to move to the releasing position to allow removal of tank  8 . However, whenever the parking brake is disengaged the solenoid  38  will de-activate allow the biasing force of the locking can arm spring means  28  to move to the locking position in engagement with the pivoting head means  16  to prevent movement thereof from the closed head position  44  to the opened head position  46 . Thus, the solenoid be de-activated to allow the head spring  17  to prevent movement of the pivoting head  16  to the opened head position  46  unless the parking brake switch is on. Thus, the tank  8  will be fixedly secured within the tank receiving zone  13  until the operator of the vehicle moves the parking brake switch to the on position. This is a safety arrangement which prevents unlocking of the secure holding of the tank  8  by the bracket means  10  unless the vehicle is in a stationary position with the parking brake on. Control of operation of the solenoid  38  can be provided by sensing other parameters of vehicle operation that will also assure safe retaining of any tanks  8  within the vehicle such as being only responsive to a vehicle automatic transmission being in the park position to allow the pivoting head  16  to move to the opened head position  46 . 
         [0032]    The pivoting head means  16  defines a head locking arm  18  thereon which extends outwardly therefrom to facilitate engagement thereof with respect to the locking cam arm  22  of the locking mechanism  54 . Head locking arm  18  preferably includes a hardened insert  19  preferably of tempered steel to resist wear which is adapted to be engaged by pivotal movement of a locking cam arm  22 . Locking cam arm  22  is pivotally mounted about a locking cam arm pivot  23  and defines a locking cam surface  24  thereon. Locking cam arm  22  which is pivotally mounted about the locking cam arm pivot point  23  is adapted to be operatively connected by linkage to the powered movement of solenoid rod  40 . As such, when the solenoid rod  40  moves upwardly responsive to de-activation of the locking solenoid  38 , the locking arm cam  22  will be allow to pivot toward the head locking arm causing the locking cam surface  24  to engage the head locking arm  18  of the pivoting head  16  due to the force of the locking cam arm spring means  28  which urges the locking cam arm  22  into engagement with the hardened insert  19  of the head locking arm  18  of the pivoting head means  16  thereby allow locking of the pivoting head  16  in the closed head position  44 . The locking cam arm means defines a locking cam surface  24  having a plurality of engagement teeth  26  defined thereon the to facilitate engagement thereof with respect to the hardened insert  19  of the head locking arm  18 . 
         [0033]    When the solenoid is actuated the output rod  40  be drawn downwardly to cause the locking cam arm  22  to moves to the releasing position  56  and the locking cam surface  24  will disengage from the hardened insert  19  of the head locking arm  18  thereby forcing the locking cam arm means  22  to move to the releasing position  55  out of engagement with respect to the pivoting head means  16  such that the pivoting head  16  will be capable of movement from the closed head position  44  to the opened head position  46  to allow a tank  8  to enter the tank receiving zone  13  or exit therefrom as desired. 
         [0034]    A locking cam arm spring  28  is operatively connected to the locking cam arm  22  to urge it to move toward the locking position  55  such that the cam surface  24  thereof is in engagement with respect to the head locking arm  18 . As such, opening of the head locking arm  18  to the opened head position  46  will be prevented unless the locking solenoid  38  overcomes the resiliently exerted bias of the locking cam arm spring means  28  to cause locking cam arm  22  to move to the releasing position  56  thereof. Thus, unless the vehicle parking brake switch is in the on position such that the parking brake is engaged, it will be impossible for a tank  8  to be capable of being removed from the tank receiving zone  13 . Thus, such removal is prevented unless the vehicle has come to a stop and the parking brake has been properly engaged. An alternative configuration might be utilized to sense that the vehicle transmission has been placed into the park position. Other similar safeguarding parameters can be sensed to provide information to the locking solenoid  38  that it is now safe to allow tanks  8  to be removed from the tank receiving zones  13  of the seat backs within the vehicle. 
         [0035]    In the preferred configuration of the present invention as shown, the pivoting head  16  is pivotally mounted about a head pivot  20  which extends through the head bracket  15  of the main bracket  10 . Similarly the locking cam  22  is pivotally about a locking cam pivot  23  also defined in the head bracket  15  of main bracket  10 . 
         [0036]    Another failsafe mechanism included in the present invention is the resiliently biased top clamp  36 . This top clamp extends outwardly and is designed to exert a downwardly directed bias on the bottom of the tank  8  when positioned within the tank receiving zone  13  to further facilitate retaining thereof securely in place safely within the tank receiving zone  13 . 
         [0037]    It is important with the present invention to provide a means for servicing of the apparatus and for this reason a service arm  30 . Service arm  30  is pivotally mounted at a service arm pivot point  31  defined in the head bracket  15  of main bracket  10 . Service arm  30  is pivotally movable to control positioning of the locking cam arm means  22  manually. Service arm  30  defines a service arm aperture  52  extending therethrough. 
         [0038]    A service arm pin  32  is fixedly mounted in the locking cam arm  22  and extends through a longitudinal slot means  84  defined in the head bracket  15  of the main bracket  10  and further extends into the service arm aperture means  52 . As such, movement of the service arm  30  can urge similar movement of the service arm aperture means  52  which while capturing the service arm pin  32  will force pivotal movement of the locking cam arm  22  therewith as desired. For this reason movement of the service arm  30  will cause similar movement of the locking cam arm  22  between the releasing position  56  and the locked position  55 . For this reason pivotal movement of the service arm  30  will forcibly cause locking or inlocking of movement of the pivoting head  16  as desired and in this manner provide a means for easily facilitating service of the apparatus of the present invention. The movement of the service arm  30  will also provide a manual backup to the powered drive means  38  for controlling movement of the pivoting head means  16  between the closed head position  44  and the opened head position  46 . 
         [0039]    An important aspect of the present invention is the inclusion of a plurality of mounting arms  48 . These mounting arms  48  provide the means of securing of the bracket  10  of the present invention with respect to the configuration of the vehicle seat. These mounting arms  48  are sometimes provided by the seat manufacturer but also can be provided by the manufacturer of the tank receiving bracket  10  and this construction will vary depending on the configuration and design of the seat and the bracket themselves. 
         [0040]    It is important that the apparatus of the present invention be usable with various different configurations of designs for the tank  8  and for this reason an adjustable foot member or base cup  14  is provided which includes an engagement screw which can be selectively tightened at various positions along a slot to vary the lateral dimension of the base cup  14  to accommodate tanks  18  having various different configurations especially different head configurations. 
         [0041]    One of the unique aspects of the apparatus of the present invention is in the unique construction of the locking cam arm  22 . This construction is shown best in  FIG. 6  which shows three individual plates in exploded view. These include a first plate means  58  and a second plate means  66  and a third plate means  74 . In this construction the first plate means  58  and the second plate means  66  are of identical construction. 
         [0042]    In particular the first plate means  58  includes a first plate aperture means  60  defined extending therethrough and a first linkage tab  62  extending laterally outwardly therefrom. A first linkage aperture means  64  is also defined extending through the first plate means  58 . 
         [0043]    The second plate means  66  is of a construction basically identical to the first plate means  58  with a second plate aperture means  68  defined therein and a second linkage tab  70  extending outwardly therefrom. A second linkage aperture means  72  is also defined therein. The third plate means  74  is constructed identically to the first plate means  58  and the second plate means  66  except for the omission of a linkage tab. That is, the third plate means  74  includes a third plate aperture means  76  defined therein. The overall construction of the locking cam arm  22  of the present invention is achieved by providing a sandwich-type construction with the third plate means  74  in the middle and the first plate means  58  secured on one side thereto and the second plate means  66  secured on the opposite side thereto. These three members are secured together by a plate securement means  82  such as a plurality of rivets. The rivets are adapted to extend through each of the plates  58 ,  66  and  74  in such a manner as to secure them with respect to one another with the respective plate apertures, that is, namely the first plate aperture means  60 , the second plate aperture means  68  and the third plate aperture means  76  in registration with one another to facilitate pivotal mounting of the locking cam arm  22  with respect to the bracket  10 . With the three plates secured to one another the first linkage tab  62  and the second linkage tab  70  will be positioned adjacent to one another but slightly spatially disposed from one another by a dimension equal to the thickness of the third plate means  74 . In this manner a linkage engagement slot  78  will be defined between the first linkage tab  62  of first plate means  58  and the second linkage tab  70  of the second plate means  66 . This linkage engagement slot  78  is adapted to engage an arcuate link  86  in a movable manner. Arcuate link  86  is best shown in  FIG. 4  where it extends between the longitudinal slot  84  defined in the locking cam arm  22  and the output rod  40  of drive mean  38 . This link provides the interconnection between the output rod  40  of the drive means  38  for powering movement of the locking cam arm  22 . This unique construction greatly facilitates assembly and machining of the pairs needed to form the locking cam arm  22 . Preferably the first linkage tab  62  and the second linkage tab  70  will define apertures therein with a linkage pin  80  extending therethrough and through the end of the arcuate link  86  positioned therein to facilitate connection therewith. The linkage pin  80  which retains the arcuate link  86  within the linkage engagement slot  78  is positionable extending through the first linkage aperture means  64  defined in first linkage tab  62  and the second linkage aperture means  72  defined in the second linkage tab  70  in such a manner as to also extend through the arcuate link  86  positioned within the linkage engagement slot  78 . 
         [0044]    While particular embodiments of this invention have been shown in the drawings and described above, it will be apparent that many changes may be made in the form, arrangement and positioning of the various elements of the combination. In consideration thereof, it should be understood that preferred embodiments of this invention disclosed herein are intended to be illustrative only and not intended to limit the scope of the invention.