Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. WO2020117477 - CHARIOT D'ALIMENTATION EN AIR MOBILE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

MOBILE AIR SUPPLY CART

CROSS-REFERENCE TO RELATED APPLICATIONS AND CLAIM OF PRIORITY

[0001] This application claims the benefit of, and incorporated herein for all purposes are, U.S. Provisional Patent Application Ser. No. 62/775,093, filed December 4, 2018 in the name of 1005, LLC, and titled“Mobile Air Supply Cart;” PCT Application No.

PCT/US2019/016501 , filed February 4, 2019 in the name of 1005, LLC and titled“Breathable Gas and Water Hose Apparatus;” and U.S. Provisional Patent Application Ser. No. 62/626,760, filed February 6, 2018 in the name of 1005, LLC and titled“Breathable Gas and Water Hose Apparatus.”

BACKGROUND

Field

[0002] The present invention relates to a mobile air supply cart. More specifically, the present invention is directed to a cart for transporting cylinders that contain a supply of air for personnel using breathable gas and water fire hoses while working in a smoke filled, toxic, or another hazardous environment. An example of such a hose is that identified by U.S. Patent Number 6,520,178, which discloses two air hoses located within a water hose, together with a system allowing for easy connect and disconnect of the air supply to the firefighter’s mask that could be used with a standard self-contained breathing apparatus used by firefighters. An improvement upon U.S. Patent Number 6,520,178 is disclosed in pending application PCT/US2019/016501 , which, among other things, discloses a system for an air and water hose apparatus that automatically switches the user’s source of air from the apparatus to tanks worn on the back of the user when the air pressure in the apparatus falls below a certain pressure.

BACKGROUND OF THE INVENTION

[0003] Typically, personnel working in environments in which the air is unsafe to breathe, such as individuals fighting fires or working in response to an environmental hazard, wear a respirator mask to which air is supplied. Usually, a respirator mask is supplied with air from cylinders carried on the user's back. However, when a breathable air and water hose apparatus is used, such as the one set forth in patent application PCT/US2019/016501 (“Breathable Gas and Water Hose Apparatus”) or U.S. Patent Number 6,521 ,178 (“Air and Water Hose Apparatus for Firefighters”), which applications are incorporated herein by reference, the wearer is not required to be solely reliant on the limited amount of air that can be provided by such cylinders on his back, because breathable air is supplied through the hose apparatus. However, air must be supplied to the breathable air and water hose apparatus. Stand-alone pressurized air cylinders, such as those used in self-contained breathing apparatuses, may be used as such a remote source of air to supply such a hose. Unfortunately, such cylinders are heavy and bulky, and transporting them to facilitate movement of the user is difficult and time consuming. Even when the hose is lengthy, this presents a serious drawback in those situations in which the user must move rapidly, a frequent occurrence when fighting fires.

[0004] Consequently, a mobile air supply cart is needed to facilitate use of compressed air cylinders as a remote source of air for breathable gas and water hose apparatuses used by personnel working in hazardous environments. This air cart must be easily transportable.

SUMMARY

[0005] It is an object of the present invention to provide a mobile air supply cart that facilitates the use of compressed air cylinders as a remote source of air to supply breathable gas to a breathable gas and water hose apparatus used by personnel working in hazardous environments. More specifically, the object is to provide such a cart that is easily transportable. This object, as well as other objects, is accomplished in a mobile gas supply cart having a support for at least one, and more preferably three, compressed gas cylinders. At least two wheels are rotatably coupled to the support and a piping assembly is supported on the support. The piping system has (i) a manifold supported by the support and having inlet ports for

receiving gas from the compressed gas cylinders and an outlet port, (ii) a pressure regulator in flow communication with the manifold port, and (iii) at least one outlet port for supplying gas to a breathable gas and water hose. The support has (i) a base portion to which the wheels are coupled, (ii) a frame portion for supporting compressed gas cylinders, (iii) a connector for coupling and uncoupling the frame portion from the base portion, and (iv) storing capacity for a folded, empty breathable gas and water hose that is not in use.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a front elevation view of the mobile air supply cart according to the current invention.

Figure 2A is a rear elevation view of the mobile air supply cart according to the current invention.

Figure 2B is an enlarged view of one end of a breathable gas and water hose apparatus that may be used in conjunction with the current invention.

Figure 3 is an enlarged partial view of the cylinders and piping system.

Figure 4 is a rear elevation view of the mobile air supply cart including a cover protecting a folded, empty breathable gas and water hose.

Figure 5 is an interior view of the mobile air supply cart according to the current invention with the surrounding environment illustrated by dotted lines.

DETAILED DESCRIPTION

[0006] The mobile air supply cart 101 according to the current invention is shown in Figure 1. The cart 101 supplies breathing air to a breathable gas and water hose 102 (Fig. 2) used by a user working in a hazardous environment. The breathable gas and water hose 102 may be one such as that disclosed in pending application PCT/US2019/016501 , filed on February 4, 2019 in the name of 1005, LLC and titled “Breathable Gas and Water Hose Apparatus”. The cart 101 is comprised of a frame assembly base 103. The base 103 has a

handle 104 which is affixed at one end and a bottom tray 105 which is affixed at the other end. In addition, a pair of wheels 106 are mounted on the base 103.

[0007] As shown in Figure 1 , the base 103 has a wall support 107 extending upwardly from the tray 105 attached thereto. The tray 105 is adapted to support three compressed air cylinders 110, 111 and 112. The cylinders 110, 111 and 112 are secured to the base 103 or the wall support 107. The base 103 can also be configured to support a folded breathable gas and water hose 102 as shown in Figure 2.

[0008] A piping system 120 is mounted on the cart 101 , as shown in Figure 5. The piping system 120, as discussed further below, regulates the flow of breathing air from the compressed air cylinders 110, 111 and 112 to the regulator 121.

[0009] Each of the compressed air cylinders 110, 111 and 112 has a first shut-off valve 124 at its top, as shown in Figure 3 and in Figure 5. A piping system 120, shown in Figure 5, features a coupling for each cylinder 110, 111 and 112 that is adapted to mate with the outlets of the corresponding shut-off valves 124. High pressure hoses 113, 114 and 115 direct the compressed air from the cylinders 110, 111 and 112 to a four-way manifold 126. From the four way manifold 126, the air flows to a regulator 121. A gauge, as is well known in the art, allows the pressure of the air in the regulator 121 to be monitored. A safety valve, also well known in the art, connected to the regulator 121 ensures that the air pressure does not exceed a predetermined value. The regulator 121 is connected to a quick connect fitting, well known in the art, that allows a breathable gas and water hose 102 to be connected.

[0010] The mobile air supply cart 101 for supplying breathing air to a breathable gas and water hose apparatus 102 comprises: a first compressed air cylinder 110; a second compressed air cylinder 111 ; a third compressed air cylinder 112; means for securing said cylinders 110, 111 and 112 to said air supply cart 101 ; a regulator 121 having an outlet port 122 having means for placing a hose 123 connected to the gas hose portion 134 of a breathable gas and water hose

apparatus 102; first, second, and third outlet pipes 113, 114, and 115, connected to the first, second and third compressed air cylinders 110, 111 and 112; a four-way manifold 126 connecting the outlet pipes 113, 114 and 115 to the regulator 121 ; means for receiving air from a source of compressed air 108 remote from said air supply cart 101 ; and means for reducing the pressure of said air delivered from said air cylinders 110, 111 and 112 to said outlet port 122 placed in flow communication with and between said cylinders 110, 111 and 112 and said outlet port 122.

[0011] The mobile air supply cart may be used as part of a mobile air supply system 100 which allows for breathing air to be supplied to a breathable gas and water hose apparatus 102 having: a first compressed air cylinder 110; a second compressed air cylinder 111 ; a third compressed air cylinder 112; an air supply cart 101 for transporting said cylinders 110, 111 and 112, said air supply cart 101 having: means for securing said cylinders 110, 111 and 112 to said air supply cart 101 ; a regulator 121 having an outlet port 122 having means for placing a hose 123 connected to the gas hose portion 134 of a breathable gas and water hose apparatus 102; first, second, and third outlet pipes 113, 114, and 115, connected to the first, second and third compressed air cylinders 110, 111 and 112; a four-way manifold 126 connecting the outlet pipes 113, 114 and 115 to the regulator 121 ; means for receiving air from a source of compressed air 108 remote from said air supply cart 101 ; and means for reducing the pressure of said air delivered from said air cylinders 110, 111 and 112 to said outlet port 122 placed in flow communication with and between said cylinders 110, 111 and 112 and said outlet port 122.

[0012] Firefighters or other users working in hazardous environments may utilize the method for providing breathing air to a breathable gas and water hose apparatus 102, which comprises the steps of: providing a mobile air supply cart 101 for supplying breathing air to a breathable gas and water hose apparatus 102 and further comprising: a first compressed air cylinder 110; a second compressed air cylinder 111 ; a third compressed air cylinder 112; means for securing said cylinders 110, 111 and 112 to said air supply cart 101 ; a regulator 121 having an outlet port 122 having means for placing a hose 123 connected to the gas hose portion 134 of a breathable gas and water hose apparatus 102; first, second, and third outlet pipes 113, 114, and 115, connected to the first, second and third compressed air cylinders 110, 111 and 112; a four-way manifold 126 connecting the outlet pipes 113, 114 and 115 to the regulator 121 ; means for receiving air from a source of compressed air 108 remote from said air supply cart 101 ; and means for reducing the pressure of said air delivered from said air cylinders 110, 111 and 112 to said outlet port 122 placed in flow communication with and between said cylinders 110, 111 and 112 and said outlet port 122. The method further comprises the steps of providing a breathable gas and water hose apparatus 102; connecting the outlet port 122 to the gas hose portion 134 of a breathable gas and water hose apparatus 102; and connecting the breathable gas and water hose apparatus 102 to the breathing apparatus of a user in need of an air supply.

[0013] In one embodiment, the regulator 121 is connected to a low-pressure manifold 133 that has two outlet ports 122 and 131 , each of which includes a quick connect fitting that allows a breathable gas and water hose 102 to be connected. Thus, the cart 101 is capable of simultaneously supplying air to multiple users.

[0014] In another embodiment, the cart 101 allows for the isolation of one of the cylinders 110, 111 or 112 for refilling while the remaining cylinders 110, 111 or 112 continue to supply air to the manifold 126. In this embodiment, and by way of example, one cylinder 110 is isolated for refilling by closing its valve 124 and removing it from the cart 101. The air supply cart 101 directs air from the remaining two cylinders 111 and 112 to the gas hose portion 134 of the breathable gas and water hose apparatus 102, which breathable gas and water hose apparatus 102 is described and disclosed in pending application PCT/US2019/016501 , filed on February 4, 2019 in the name of 1005, LLC and titled “Breathable Gas and Water Hose Apparatus.” While the air supply cart 101 is directing air from the remaining two cylinders 111 and 112, the shut off valve 124 from the refilling cylinder 110 is closed. The refilling cylinder 110 is connected to a remote source 108. The remote source 108 is then turned on to dispense air into the refilling cylinder 110. In this way, cylinders 110, 111 and 112 can be refilled without interrupting air supply to said user.

[0015] Although the current invention has been described with reference to a system for supplying breathing air to a respirator mask for a fire fighter operating in a smoke-filled environment, the invention is also applicable to other situations in which a continuous source of breathing air is required, such as hazardous material incidents or hazardous materials site monitoring. In addition, the invention is applicable for supplying compressed air to pneumatic tools, or for supplying other types of compressed gases to other types of gas consuming devices, for use in emergency situations, such as automobile accidents. Thus, the current invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof and, accordingly, reference should be made to the appended claims, rather than to the foregoing specification, as indicating the scope of the invention.