The present invention relates generally to a tool safety system and method for use thereof, and more specifically to a wireless safety system for detecting safety equipment in proximity to a tool before activating the tool.
The United States Department of Labor's Occupational Safety & Health Administration (“OSHA”) requires that workers on construction or industrial sites use personal protective equipment (“PPE”) when performing certain jobs or when using certain tools. The PPE required may differ depending on the piece of equipment being used as well as the type of job being performed, however typically the requirements are fairly standard, including eye and face protection (e.g. safety glasses or face shields), foot protection (e.g. safety toed boots), hand protections (e.g. gloves), head protection (e.g. hard hats), hearing protection, body protection, and other items. Proper certification to use certain tools or to be in certain access areas may also be required. A common problem resulting in workplace injuries is that workers often wear only some or none of their required PPE.
Contracts and jobs could be withheld from companies who have poor Total Recordable Incident Rate (TRIR) scores due to non-compliant workers being injured on the job. This can cost companies money or to require them to be shut down completely. What is needed is a system to improve the ability for a company to be sure its workers are wearing all proper PPE.
Heretofore there has not been available a system or method for a tool safety system with the advantages and features of the present invention.
The present invention generally provides a tool safety system and method of use thereof which includes a sensor device for detecting when personal protective equipment (“PPE”) is being worn or is in proximity with an associated tool. Sensors may be included in the equipment to determine if the equipment is properly being worn, such as pressure or skin-contact sensors within gloves and hard hats, or contact switches for visors to detect that the visor is in a down position. Alternatively, simple radio frequency identification (RFID) chips could simply be placed on equipment with a receiver located on or in proximity with the tool, indicating that at the very least the PPE is in close proximity with the tool, which indicates a high likelihood that the PPE is being worn by the user. While RFID provides low-power, passive detection which should last the life of the PPE, other types of signals may also be used, such as Bluetooth, WiFi, or other wireless signals. Certification requirements to use the tool can also be provided by placing a signaling device, such as an RFID chip or Bluetooth transmitter onto the hard hat or identification badge of the user, the signaling device signaling to one or more tools that the wearer of that hat or badge is certified to use that equipment.
The tool itself could be manufactured or outfitted with a display unit, such as a series of light emitting diodes (LEDs) which are each synched to a single piece of PPE, or a simple graphical display showing similar information. The display can indicate which pieces of PPE are present and which are missing. The display unit prevents the tool from being activated until all PPE and certification identifiers are present. Alternatively, the tool could be plugged into a customized power supply device which contains the receiver unit for detecting the PPE and certification identifiers, and power won't be supplied to the tool until all PPE and identifiers are present.
The drawings constitute a part of this specification and include exemplary embodiments of the present invention illustrating various objects and features thereof.
I. Introduction and Environment
As required, detailed aspects of the present invention are disclosed herein, however, it is to be understood that the disclosed aspects are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art how to variously employ the present invention in virtually any appropriately detailed structure.
Certain terminology will be used in the following description for convenience in reference only and will not be limiting. For example, up, down, front, back, right and left refer to the invention as orientated in the view being referred to. The words, “inwardly” and “outwardly” refer to directions toward and away from, respectively, the geometric center of the aspect being described and designated parts thereof. Forwardly and rearwardly are generally in reference to the direction of travel, if appropriate. Said terminology will include the words specifically mentioned, derivatives thereof and words of similar meaning.
II. Preferred Embodiment Tool Safety System 2
The various pieces of PPE can be wirelessly detected by the receiver 14. The PPE may include a hard hat 26, footwear 24 (e.g. steel toed boots), gloves 22, body protection 20 (e.g. safety vest), hearing protection 18 (e.g. earmuffs or ear plugs), and eye protection 16 (e.g. visor or safety glasses). In some situations, specific training certification may be required prior to operating the tool 4. In such a case, another RFID tag or wireless emitter would be associated with a training certification 28 which may be affixed to the user's hard hat or identification badge 8 or some other piece of apparel. Only users having proper certification would be allowed to operate the tool or piece of equipment.
The various PPE includes sensors 38 each capable of wirelessly transmitting through a wireless transmitter 42, either passively or actively, to the wireless receiver 14 of the tool 4. The sensors may be simple proximity sensors indicating that the PPE is in range of the tool. More useful however would be pressure sensors or skin contact sensors which can actively determine if the PPE is actually being worn by the user, rather than merely in proximity with the tool.
With the proximity sensors, the system could detect if the PPE is in proximity with the tool, meaning a high likelihood that the user is wearing the proper PPE. However, the user may not have their visor down or may have simply tucked their gloves into their back pocket. More advanced sensors could be used to detect when the user is actively using the PPE. Such sensors could include skin-contact or pressure sensors inside of gloves and hard hats, contact sensors to indicate a visor is in a down position, and even a key pad or other security feature to key in the user's training certification credentials.
The system may be installed directly into the tool 4, or may be an external element to the tool. For example, a power cord 36 could be modified with a power outlet that will not activate unless the PPE is detected, thereby preventing any power from reaching the tool. This would have to be updated depending upon the tool or piece of equipment being used, but could easily be controlled by a safety officer. Safety officers could also provide another layer of protection by being the only persons capable of removing or unlocking such safety devices on power cords 36, tools 4, or the like.
This invention could also be applied to heavy machinery, such as earth-working vehicles or other large equipment, rather than just to small tools. Proper training is required to operate most machinery, so the machinery could detect whether the party entering the machine has the proper training to operate that machine prior to allowing startup, as well as the proper safety PPE.
This process continues at 62 until all PPE required by the tool is detected. At that point, the tool is activated at 68 and the user may use the tool for a duration at 70. This duration can be limited based on programming within the tool safety system to only be used for certain lengths of time. After the duration of tool usage, the tool is again deactivated at 72, either manually by the user or upon the user stepping away from the tool, resulting in a detection of missing PPE. The process ends at 74.
It is to be understood that while certain embodiments and/or aspects of the invention have been shown and described, the invention is not limited thereto and encompasses various other embodiments and aspects.
This application claims priority in U.S. Provisional Patent Application No. 62/505,354 Filed May 12, 2017, which is incorporated herein by reference.
Number | Date | Country | |
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62505354 | May 2017 | US |