The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Johns Hopkins students designed a noise-reducing leaf-blower attachment with Stanley Black & Decker as the project sponsor—but the available sources do not confirm that it has gone on sale, what it is called, or which blowers it fits. Johns Hopkins reported the design and the sponsor’s sales expectation in 2024; that expectation is not proof of a product launch.
What is the BLACK+DECKER leaf blower silencer?
It is a student-designed attachment developed by a Johns Hopkins University mechanical engineering team for a project sponsored by Stanley Black & Decker. Johns Hopkins described the design as patent-pending in its May 14, 2024 account. That report identifies a sponsored project, not a confirmed, model-specific BLACK+DECKER accessory.
The team’s concept was to take in the blower’s airflow, divide it into sections, shift some of the airflow, and then recombine the streams. The team said this arrangement dampens sound as air leaves while retaining force. This is the inventors’ explanation as reported by the university, rather than a detailed engineering paper.
How much quieter did the design make a blower?
Johns Hopkins reported two different noise results in 2024. It said the overall noise level fell by about two decibels and characterized the sound as 37% quieter. Separately, it reported a reduction of about 12 decibels in the shrillest frequencies and characterized those frequencies as 94% quieter. The percentages are the university’s descriptions of the reported results; they should not be read as reductions in acoustic energy or as independent validation.
The university also said the team developed more than 40 versions. Its October 2024 follow-up on the project’s Quiet Mark Industry Award reiterated that the design was patent-pending and described the sponsor’s expectation that it would be sold within two years. Neither report establishes a retail launch or provides a published independent validation study.
#1 Best Overall
- Valued Carpenter Pencil Set: You will get 2 pcs solid carpenter pencils with 26 piece 2.8 mm refills, 1 replaceable sharpener, 1 plastic storage box.The complete carpenter pencils combination allows you to finish your work faster and more easily
- Deep Hole Marker Pencil: The deep-hole construction pencils adopts 45mm elongated tip design, which is more convenient to mark in the small hole or in other tight areas that other carpenter markers cannot reach
- Carpenter Pencils with Sharpener: The sharpener is screwed into the top of the work pencil, which won't get lost either. Built-in pencil sharpener that keep the lead with pointed and smooth to Improves line of sight in fine work
- Stronger Solid Lead: This work pencil is matched with a 2.8 mm thick lead , which is much thicker and stronger during the drawing process of construction work, it will not break or damage easily
- Marks on Various Surfaces: 3 colors solid construction pencil can marks on various surfaces,such as metal, plastic, wood, paper etc. Ideals for woodworkers, contractors, craftsmen, builders, merchants and masons
Can you buy it, and which blowers does it fit?
The available Johns Hopkins reports do not give an official retail name, price, launch confirmation, or compatibility list. Stanley Black & Decker senior product manager Nate Greene told Johns Hopkins the design was ready for mass manufacture, and the May 2024 story quoted an expectation of sales within two years. Those statements described the project’s prospects at the time; they do not establish that the attachment is currently available.
Before buying any purported version, look for an official BLACK+DECKER product listing that identifies the exact attachment and compatible blower model numbers. A listing for a different blower accessory is not evidence that it is the Johns Hopkins silencer.
Rank #2
- Ergonomically Designed: Work in tight areas with a compact design that gets into tough spots
- Compact and Lightweight: Both tools are designed to fit into difficult to reach spaces. The 1/4" impact driver has a length of 5.55 in. and weighs just 2.8 lbs, while the 1/2" drill/driver measures only 7.5 in. and weighs 3.6 lbs
- Both the DEWALT impact driver and electric drill driver feature integrated LED work lights with a convenient 20-second delay, ensuring enhanced visibility in dimly lit or challenging work areas
- One-Handed Loading - Keep one hand free with a 1/4 in. hex chuck that accepts 1 in. bit tips
- Power drill cordless with 1/2" single sleeve ratcheting chuck provides tight bit gripping strength, making bit changes faster and more secure
How to check BLACK+DECKER accessories without confusing them with the silencer
BLACK+DECKER’s pages for a Yardmaster 20V MAX leaf-blower gutter attachment and a quick-connect gutter-cleaning attachment describe different products and functions. Neither page establishes that the item is the Johns Hopkins noise-reducing design. The company’s accessories and parts collection is also not confirmation of silencer availability.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minute- Find the blower’s model and type number on the tool or its documentation.
- Use BLACK+DECKER’s support guidance for finding a parts list or manual to search by model and type number.
- Check any candidate accessory’s official listing for an explicit product name and a compatibility list that includes your blower model.
That process can help verify ordinary parts and accessory fit; it does not show that the silencer is for sale.
Rank #3
- 【Great Compatibility】This Katerk 1/4 inch hex shank bit holder is specifically designed for 1/4 inch hex shank drill bits. It's compatible with most 1/4 fast hex handles, hex sockets, various electric screwdrivers, and handheld screwdrivers. The bit holder makes it a valuable addition for any handyman.
- 【Secure and Safe】Built with a secure backup nut design, each drill bit holder securely locks onto your bits, ensuring they stay firmly in place. Additionally, our bit holder incorporates a high-quality steel ball rolling design that holds up to several kilograms of weight, ensuring your various drill bits don't fall off.
- 【Easy One-Handed Operation】The bit holder for impact driver allows you to change bits single-handedly, simplifying your workflow. Its multi-color design further allows for quick identification of the drill bit you need.
- 【Compact and Convenient】Thanks to its compact size, this 1/4 inch bit holder is easy to carry around. The bit holder allows for easy attachment to various tools, making this a convenient addition to your construction accessories. The Katerk bit holder is cast from high-quality alloy material, promising a long product lifespan. Despite its rugged strength, the bit holder remains lightweight, making it portable.
- 【Cool Christmas Gift For Men Stocking Stuffers】 This screwdriver bit holder, driver bit holder, impact bit holder, can be given as a gift to your loved one, especially for anyone involved in construction or electrical work. It's a must-have for stocking stuffers for men and women, tools gifts for dad, tech gadgets for men, gifts for dad, gifts for him, gifts for husband, gifts for boyfriend, cool gadgets for men, and cool gifts for dad.
What the project could mean for quieter yard work
The design’s stated goal was to reduce the blower’s sound while preserving airflow force, rather than simply substituting a different task attachment. For contractors and property owners, that distinction matters: a gutter-cleaning accessory changes how a blower is used, while the Johns Hopkins concept was intended to alter its sound. Until an official listing and compatibility information are available, treat it as a reported engineering project—not a purchasable retrofit or a basis for specifying a particular blower.
Quick Recap
Best Value
- Milwaukee Ink all Fine Point Marker, Black, 4 Per Pack
- 4 per pack Features Clog Resistant Marker Tip Writes through Dusty, Wet and Oily Surfaces Durable Marker Tip for Writing on Concrete, OSB and Rough Surfaces
- Clog resistant tip writes on dusty, wet and oily surfaces and is optimized for rough surfaces such as OSB, cinderblock and concrete
- Hard hat clip- attaches for easy access
- Quick dry time with reduced smearing and marking
Rank #4
- Long Nib and Deep Hole Marker: Our mechanical carpenter pencil with 45mm nib is designed for easy marking of deep holes or narrow areas. These construction pencils are the great choice for woodworking tools, construction tools, carpenter tools, contractor tools, wood carpentry tools and architect tools
- Extra Refills in 2 Colors for Versatile Marking: The construction mechanical pencil comes with 12 extra 2.8mm refills, including 6 red and 6 black refills. The black refill is suitable for light surfaces, while the red wax is perfect for dark surfaces. Our carpenter mechanical pencil makes sure that you'll have an ample supply for extended use
- Built-in Sharpener: Our construction pencil comes with a built-in sharpener to ensure the mechanical pencil tip is always sharp and ready for use. Never buy an extra pencil sharpener again. A great tool for any woodworker pencil, contractor pencils. The refill can easily be extended or retracted with a simple click of the pencils mechanical, allowing you to work more efficiently and accurately
- Portable Clip Design: Our deep hole construction pencil features a portable clip design, easy to carry and attach to your pocket or tool box, so that you can keep the carpenter pencils mechanical close at hand, making it a convenient tool to have on the go. Great gifts choice for carpenters
- Stronger Pencil Lead: The black refills are made of lead, sturdy and smooth. The red refills are made of wax, clear and light. These marking pencils are much thicker and stronger than normal pencils during the marking process of construction work, suitable for various surfaces, such as glasses, metal, boards, floors, walls, furniture, etc. The written marks can be easily wiped with a wet paper towel when needed
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
