Patent Application
20230330447
The present invention pertains to rescue tools for use by firefighters and other first responders to conduct emergency operations, and in particular, a wedge to enable forcible entry into buildings and hold open doors.
Firefighters, among other first responders, are responsible for rapid and resourceful responses to many diverse emergency situations often involving rescues of entrapped persons in precarious and sometimes life-threatening situations. In fighting fires in a structure, a firefighter must take precautions for his own safety and that of others, but at the same time move as rapidly and efficiently as possible. In many emergency situations including fires, tools to open locked doors are needed to enable an access and escape route for fire, trapped individuals, and venting smoke or toxic fumes.
A firefighter must also be able to secure the door in an open position quickly and securely in order to prevent a door closing unexpectedly that may pinch off the water supply to a fire hose, prevent ventilation of fire gases and smoke, and possibly lock behind the firefighter, trapping her or him in the building.
A further need of rescue workers is for a compact and lightweight mechanism for swift prying of a gap between a door side edge adjacent to the lock and door frame to insert lock releasing blade or to impede automatic door closing mechanisms and thereby enhance escape of poisonous fumes as well as trapped victims in a burning structure. Unfortunately, however, prior art tools for forcible entry are heavy and unwieldy. In particular, the weight of steel wedges may delay or impede swift insertion under or behind or swift prying of a gap between a door side edge adjacent to the lock and door frame to insert lock releasing blade or to impede automatic door closing mechanisms and thereby enhance escape of poisonous fumes as well as trapped victims in a burning structure.
Due to the rapidly expanding scope and number of emergencies, there is a persisting and urgent need for a lightweight and compact facile rescue tool that can be leveraged to amplify the force and hence efficacy in forcible entry and is capable of wedging and thereby propping open doors, windows and mechanisms blocking access to spaces, water and fire retardant pipes and reservoir and similar secured entryways and agents. Due to such increased number of calls and the increased endurance needed by firefighters in order to maintain rapid and strong performance during rescue operation while being weighed down by heavy construction of turnout gear rescue tools, there remains a persisting and urgent need for a streamlined tools, including a wedge tool that is strong yet lightweight and compact that is capable of prying and propping open doors, windows and mechanisms blocking access by first responders to endangered spaces. It can thus be readily seen that providing a fire fighter or other first responder with a rescue tool enabling quick and smooth rescue, problems delaying entry through locked doors and keeping doors and passageways open during a rescue operation remain
Addressing such and other drawbacks in the prior art, the present invention is directed toward a rescue access wedge having a base portion, and a pair of opposed generally triangular sidewalls upwardly extended from the base portion and a method for use thereof. The various embodiments include a generally triangular-shaped body with sidewalls tapering from a rear portion to a tip in a front portion connecting the pair of opposed side surfaces and aligned slots disposed on opposed front and back surfaces are adjoined for coupling in a slot between two prongs a fork lever end of a halligan bar or other rescue tool. The rescue access wedge of the present invention may further feature at least one concavity or notch disposed in a top and/or bottom surface configured to seat this rescue access wedge upon an abutting surface to prevent pushing or driving it through a gap or material.
Embodiments of the recited method thereby leverage compressive force for wielding during rescue operations such as, for example forcible entry through a locked door or otherwise blocked passage. Embodiments of the method enhance forcible prying and opening by thus leveraging applied force imparted, for example, by striking the halligan bar and/or the rescue access wedge itself. The combination of leveraging force by pulling and pushing a coupled halligan bar while striking the back of the wedge enhances the force applied to the rescue wedge to thereby facilitate forcible entry through a locked door, including highly secured, heavy duty doors of steel or similar materials or otherwise reinforced construction.
Various embodiments of the rescue access wedge may include least one hole or a plurality of holes. In some embodiments, one or more holes is disposed in the base portion. Thee at least one hole may be tapered to form a teardrop shape. Edges of the hole may be beveled in a gradual upward taper from the edge.
In some embodiments, the interior area of the triangular-shaped body within the base portion and sidewalls is hollow.
Many embodiments include at least two holes aligned in opposed sidewalls of a rear portion such that the two holes are capable of receiving a tether line for securing an object Examples of such an object include a ladder, a lead line, a person, or an unstable wall or structure.
Various embodiments of the rescue access wedge feature transverse recessed columns of two opposed slots are configured for receiving a fork end of a rescue tool such as, for example, a halligan bar.
Other features of the various embodiments may include a non-slip surface with, for example, a texture, dimples, or ripples on at least one side of the triangular-shaped body has a non-slip surface for gripping.
Embodiments may also include buoyant material for flotation.
Additional features of various embodiments may include reflective, luminescent, fluorescent material for visibility in a low light condition.
Various embodiments of this rescue access wedge feature one or more empty spaces or cavities between the inner surfaces of the bottom and top layers and side surfaces configured to impart ample strength and stability while reducing weight and cost of materials and construction and to provide further functionalities as described in detail below.
A particularly advantageous feature of the various embodiments are aligned holes in opposed side surfaces of the tall back portion providing anchor points to tether for a ladder when the front end is embedded in a stable material. The angling of the front portion buttresses and thus prevents slippage of the bottom of the ladder.
The present invention thus provides a multi-purpose, lightweight and facile forcible entry and access tool.
As illustrated in the exemplary embodiment illustrated in
As illustrated, the present rescue access wedge 10 includes a bottom layer 12 that spans the length of the tool, and a pair of opposed side surfaces 14 angled upwardly from the bottom layer 12 and tapering from a taller back portion 16 to an acute angle in a front portion 18. The base portion 12 and sidewalls of rear portion 8 and generally triangular-shaped front portion 14 includes holes 2, 4, 6, 22.
Aligned paired holes 22 may be employed to receive a carabiner or otherwise tether the rescue access wedge to a firefighter's turn out gear. or another tool. Some embodiments configures a hole 4 for seating on a pike of a halligan bar.
In particular, features of various embodiments of the present rescue access wedge 10 include aligned channels providing slots 16 disposed on opposed side surfaces. As further shown in the illustrated embodiment, slots 16 may be angled upwardly toward tip 18 and configured to couple with paired prongs of a forked lever end of a rescue tool 40, such as shown in
Forcible prying and opening of a locked door 30 may be further enhanced by striking a surface of rescue access wedge 10 with a sledge or other striking tool. The combination of leveraging force by pulling and pushing a coupled rescue tool 40 such as, for example, a halligan bar, while applying force to a striking face of rescue access wedge 10 amplifies the torque or force applied to the wedge to thereby facilitate showing concavity 20 between door 30 and door jamb 30′, as shown in
Aligned paired slots 16 recessed in the side walls adjoining rear portion 8 and front portion 14 are angled for coupling with a fork end of rescue tool 40 so as to juxtaposition rescue tool 24 at an angle that facilitates adapting the trajectory of force and reach in order to grab and/or strike a target wedge face. The illustrated embodiment further features a striking face on rear portion 8 oriented to focus applied force toward the center of the triangular-shape wedge body in order to direct impact torque to the material in which rescue access wedge 10 is seated.
A further feature of rescue access wedge 10 are one or more concavities 20 toward a rear portion 8 of the rescue access wedge 10 configured to facilitate seating the rescue access wedge 10 on abutting surfaces to prevent driving the wedge 10 through a gap or material, such as best shown in
As also shown in the illustrated embodiment of
A yet further feature of the various embodiments as illustrated in the various FIGs. are rounded edges and corners whereby annoying or harmful contact with sharp or pointed surfaces are prevented.
Various embodiments of the inventive method for using a rescue access wedge, such as exemplified in
A yet further step of the various embodiments includes the step of seating the concavity 20 disposed in a top or bottom surface upon an abutted surface such as between door 30 and door jamb 30′ to thereby stay the rescue access wedge within gap 26.
An advantage imparted by so seating of the concavity 20 of the rescue access wedge 10 into the gap 26 between a door 30 and door jamb 28, or other material is eliminating or minimizing having to manually hold or reposition the rescue access wedge 10 in place while applying such force and thereby reducing the risk of collaterally striking and injuring to the firefighter or other rescue worker.
By facilitating such leveraged force, a salient utility of the rescue access wedge 10 is to forcibly pry or prop open windows and hinged doors such as door 30 illustrated in part in
As illustrated in
Yet further features of various embodiments of rescue access wedge 10 may include a textured surface such as, for example, transversely disposed recesses or ridges on an upper and/or lower surface to enhance traction of the abutting wedge/door edge and or other adjacent surface. In some embodiments, reflective, fluorescent and/or luminescent coating may be incorporated in a surface of rescue access wedge 10. Various embodiments may further feature incorporating a buoyant material to facilitate flotation.
Embodiments may also include on or more aperture wrenches disposed in an arm. Such an aperture wrench can be configured in various shapes and sizes adapted to particular functionalities that could include configurations that are rounded, ovoid, teardrop, parabolic, rectangular, square, triangular, pentagonal or hexagonal or some other configuration. For example, the periphery could be rectangular for coupling with a typical oxygen tank valve, or hexagon shape for coupling with a hydrant or hose coupling or natural gas tank valve. Hence, modifications, permutations, additions and sub-combinations are embraced by the spirit and scope of the invention. Hence, such and other variations are included in the scope of the invention, described, illustrated and claimed herein. It can therefore be seen that the scope of the present invention is not delimited by the literal language of this specification and the appended claims.
| Number | Date | Country | |
|---|---|---|---|
| 63331304 | Apr 2022 | US |
