FIELD
The present disclosure relates to the field of firefighting equipment, and in particular to a fire truck hose bed cover and personnel safety barrier.
BACKGROUND
A fire truck, also known as a fire engine, is a vehicle designed primarily for firefighting operations. The primary purposes of a fire engine include transporting firefighters to an incident scene, providing water with which to fight a fire, and carrying other equipment needed by the firefighters. A typical modern fire truck carries equipment and tools for a wide range of firefighting and rescue tasks, including fire hoses, ladders, self-contained breathing apparatus, ventilating equipment, first aid kits, and hydraulic rescue tools.
A typical fire truck carries a number of different types of fire hoses that serve different roles in putting out a blaze. Some fire engines have a fixed deluge gun, also known as a master stream. An additional feature of a fire engine is preconnected hose lines, commonly referred to as preconnects. The preconnects are attached to the engine's onboard water supply and allow firefighters to quickly mount an aggressive attack on the fire as soon as they arrive on scene. When the onboard water supply runs out, the engine is connected to more permanent sources such as fire hydrants or water tenders and can also use natural sources such as rivers or reservoirs by drafting water. Fire trucks also typically carry 1,000 feet of a 5-inch-diameter hose stored in the hose bed on top of the truck that is used to hook up to fire hydrants. The National Fire Protection Association (NFPA) 1901 apparatus standard requires all hose loads are secured with covers.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a prior art fire truck that lacks a hose bed covering;
FIG. 2 is a perspective view of a first exemplary embodiment of a fire truck hose bed cover and personnel safety barrier in the open position according to the teachings of the present disclosure;
FIG. 3 is a perspective view of a first exemplary embodiment of a fire truck hose bed cover and personnel safety barrier in the closed position according to the teachings of the present disclosure;
FIG. 4 is a perspective view of a second exemplary embodiment of a fire truck hose bed cover and personnel safety barrier with equipment shelves in the open position according to the teachings of the present disclosure;
FIG. 5 is a perspective view of a second exemplary embodiment of a fire truck hose bed cover and personnel safety barrier with equipment shelves in the closed position according to the teachings of the present disclosure; and
FIG. 6 is a partial perspective view of a third exemplary embodiment of a fire truck hose bed cover and personnel safety barrier with extendable equipment shelves in the open position according to the teachings of the present disclosure.
DETAILED DESCRIPTION
FIG. 1 is a perspective view of a prior art fire truck that lacks a hose bed covering. Because unsecured hoses carried in a hose bed that is open on any side has the potential of being accidentally deployed while the fire truck is in motion, the National Fire Protection Association (NFPA) 1901 apparatus standard requires that all hose loads are secured with covers. Accidental deployment of loose hoses while the fire truck is in transit is extremely dangerous. Conventional hose bed covers typically incorporate a piece of tarp, mesh, or netting material that is secured over the top and side openings of the hose bed.
A firefighter may often have to step up into the hose bed to deploy or pack away the fire hose, as well as other firefighting equipment that are stored in the hose bed. It may be seen from FIG. 1 that when a firefighter is standing on the stacked firehoses in the hose bed at the rear of the fire truck, there is no safety railing or barrier at the sides and rear of the truck that can prevent accidental falls and the resultant injury.
FIG. 2 is a perspective view of a first exemplary embodiment of a fire truck hose bed cover and personnel safety barrier 10 in the open position according to the teachings of the present disclosure. The hose bed cover and personnel safety barrier 10 includes at least two (left and right) doors 10a and 10b that are rotatively coupled to the hose bed frame of a fire truck 12 by hinges 14 or like devices. FIG. 3 shows the hose bed cover and personnel safety barrier 10 in the closed position. It may be seen that doors 10a and 10b are U-shaped to cover the front, top, and rear openings to the hose bed. In particular, the door 10a includes a rear panel 10a′, a top panel 10a″, and a front panel 10a′″; and the door 10b includes a rear panel 10b′, a top panel 10b″, and a front panel 10b′″. In an alternate embodiment, doors 10a and 10b may be L-shaped for those hose beds that do not have an opening in the front. In this alternate embodiment, door 10a includes rear panel 10a′ and top panel 10a″, and door 10b includes rear panel 10b′ and top panel 10b″. The doors may include a latch to keep them shut while the fire truck is in transit.
The door panels 10a and 10b may be constructed from a wide range of materials, including rigid materials such as metal (e.g., aluminum, stainless steel, steel alloys, metal composites), carbon fiber reinforced polymers, composite materials, etc. Alternatively, doors 10a and 10b may include a rigid framework with a flexible material (e.g., tarp, canvas, plastic sheeting) secured and stretched over the framework, as shown in FIG. 3 as an example, where the rear panels 10a′ and 10b′ are constructed from a rigid solid material and the top panels 16a″ and 16b″ are constructed from a mesh material secured and stretched over a rigid frame. The door panels 10a and 10b may be secured shut using hook and loop closure, straps, bolts, latch, and other conventional means.
The doors 10a and 10b are further connected via a first cable 18 wound around locking retractable reels 20a and 20b, and a second cable 22 wound around locking retractable reels 24a and 24b. When the doors 10a and 10b are open, the cables 18 and 22 are automatically let out by the reels 20a, 20b, 24a, and 24b to stretch across the top of the doors, forming a taut safety railing or barrier for any firefighting personnel that may be positioned in the hose bed. When the doors 10a and 10b are closed, the cables 18 and 22 are automatically shortened and retracted around the reels 20a, 20b, 24a, and 24b, as shown in FIG. 3. It should be noted that the cables 18 and 22 may be constructed of a braided metal, plastics, vinyl-coated wires, a rope made from woven or braided synthetic or natural fibers, a chain, and other suitable construction and materials. It is also contemplated that in one embodiment the cable may connect the two door panels without the use of the retractable reels. In this embodiment, a short length of slack cable would hang from the door panels when the door is closed.
In an alternate embodiment, door panels 10a′ and 10b′ may be made from sheets of a flexible material, e.g., tarp, canvas, plastic sheeting. In this embodiment, the locking retractable reels 20a and 20b are located on door panels 10a″ and 10b″. When the doors are closed, the flexible sheets hang vertically over the opening of the hose bed and may be secured using hook and loop closure and straps, for example.
FIGS. 4 and 5 are perspective views of a second exemplary embodiment of a fire truck hose bed cover and personnel safety barrier in the open and closed positions according to the teachings of the present disclosure. The hose bed cover and personnel safety barrier 30 includes at least two doors 30a and 30b that are rotatively coupled to the hose bed frame of a fire truck 32 by hinges 34 or like devices. FIG. 5 shows the hose bed cover and personnel safety barrier 30 in the closed position. It may be seen that doors 30a and 30b are U-shaped to cover the front, top, and rear openings to the hose bed. In particular, the door 30a includes a rear panel 30a′, a top panel 30a″, and a front panel 30a′″; and the door 30b includes a rear panel 30b′, a top panel 30b″, and a front panel 30b′″. In an alternate embodiment, doors 30a and 30b may be L-shaped for those hose beds that do not have an opening in the front. In this alternate embodiment, door 30a includes rear panel 30a′ and top panel 30a″, and door 30b includes rear panel 30b′ and top panel 30b″.
Similar to the first embodiment, the doors 30a and 30b are further connected via a first cable 38 wound around locking retractable reels 40a and 40b, and a second cable 42 wound around locking retractable reels 44a and 44b. When the doors 30a and 30b are open, the cables 38 and 42 are automatically let out by the reels 40a, 40b, 44a, and 44b to stretch across the top of the doors, forming a safety railing or barrier for any firefighting personnel that may be positioned in the hose bed. When the doors 30a and 30b are closed, the cables 38 and 42 are automatically shortened and retracted around the reels 40a, 40b, 44a, and 44b, as shown in FIG. 4. In an alternate embodiment, door panels 30a′ and 30b′ may be made from sheets of a flexible material, e.g., tarp, canvas, plastic sheeting. In this embodiment, the locking retractable reels 40a and 40b are located on door panels 30a″ and 30b″. When the doors are closed, the flexible sheets hang vertically over the opening of the hose bed and may be secured using hook and loop closure and straps, for example.
Again, the door panels 30a and 30b also may be constructed from a wide range of materials, including rigid materials such as metal (e.g., aluminum, stainless steel, steel alloys, metal composites), carbon fiber reinforced polymers, composite materials, etc. Alternatively, doors 30a and 30b may include a rigid framework with a flexible material secured and stretched over the framework, where one or more door panels are constructed from a mesh material secured and stretched over a rigid frame. The door panels 30a and 30b may be secured shut using hook and loop closure, straps, bolts, latch, and other conventional means.
Still referring to FIGS. 4 and 5, the second embodiment further includes equipment shelves 50a and 50b coupled to doors 30a and 30b, respectively. The equipment shelves 50a and 50b are constructed of hinged shelf panels 50a′, 50a″ and 50b′, 50b″. When the doors 30a and 30b are closed (FIG. 5), the equipment shelves 50a and 50b fold over the top of the door panels 30a″ and 30b″. In this closed position, the shelf panels 50a′ and 50b′ are oriented vertically while the shelf panels 50a″ and 50b″ are oriented horizontally. In the open position (FIG. 4), the shelf panels 50a′ and 50b′ unfold and become oriented horizontally while the shelf panels 50a″ and 50b″ become oriented vertically. In this open position, the tools and equipment 52 and 54 (e.g., ladder, hydraulic rescue tools, axes, and fire extinguishers) securely attached to the shelf panels 50a″ and 50b″ become easily accessible and reachable by a firefighter standing next to the fire truck. In the open position, the shelf panels 50a″ and 50b″ are extended spaced apart from any compartment located on the truck to enable easy access to the contents therein. The shelf panels may be constructed from a wide range of rigid materials, including, e.g., metal (e.g., aluminum, stainless steel, steel alloys, metal composites), carbon fiber reinforced polymers, composite materials, etc.
FIG. 6 is a partial perspective view of a third exemplary embodiment of a fire truck hose bed cover and personnel safety barrier with extendable equipment shelves 56a and 56b according to the teachings of the present disclosure. In this embodiment, the equipment shelf panels 50a′ and 50b′ incorporate extendable ledges 56a and 56b, respectively. When the door panels 30a and 30b are in the open position, and the equipment shelves 50a and 50b are in the open position, the ledges 56a and 56b may be pulled out to form an integrated horizontal work surface with the shelf panels 50a′ and 50b′, respectively. This work surface may serve as temporary surface upon which tools may be placed, for example.
Although not shown explicitly, doors 30a and 30b as well as equipment shelves 50a and 50b may be spring-loaded to assist opening and closing actions. Further, these panels may be opened and closed using an electrically actuated hydraulic assembly, so that these actions may be initiated by a switch or button disposed inside the fire truck cab.
It should be noted that one embodiment of the hose bed cover may include more than two doors, such as door panel 10a, for example, be composed of two smaller door panels, similar to a dutch door construction. Additionally, the door panels may be constructed using a bifold or multi-fold door construction, where each door panel may have at least two sections. This multi-panel construction may be opened completely so that the panels form a vertical barrier around the hose bed, but may be folded over to lower the overall height of the fire truck and vertical barrier so that access to the hose bed is still be available in fire station garages that may have lower ceilings.
The features of the present invention which are believed to be novel are set forth below with particularity in the appended claims. However, modifications, variations, and changes to the exemplary embodiments described above will be apparent to those skilled in the art, and the fire truck hose bed cover and personnel safety barrier described herein thus encompasses such modifications, variations, and changes and are not limited to the specific embodiments described herein.
Patent Application
20170120834
