Folding 3-Handle Wrench Multi-Tool

The problem

Small repairs at home, on a bike or on the job often stop for want of the right wrench. Household tool kits rarely have every size, and borrowing or buying one for a single job wastes time.

Pocket multi-tools are popular, but most are built around pliers and knives. Their wrench options are limited, so the one tool people carry often cannot turn the nut in front of them.

The solution

This design is a multi-tool built around wrenches:

1. Three handles - right, middle and left - are joined by one pivot and fold flat together, or fan out to use each tool.
2. The right handle carries an open-end wrench at one end, a saw blade at the other with a sliding magnetic cover, and a stepped wrench that fits four nut sizes.
3. The middle handle carries a box-end (ring) wrench and a bottle opener.
4. The left handle has a socket head with a magnetic hex hole for screwdriver bits and a file plate on its side.
5. Flat and Phillips bits fit hex holes through each handle. The bits and holes are magnetic, so the bits stay put - and can also pin the handles in position.
6. A lock with a wrist strap on the pivot makes it easy to carry and hard to drop.

Who it is for

• Tool brands and EDC (everyday carry) sellers looking for a wrench-focused multi-tool that stands out from plier-based designs.
• Bike, motorcycle and outdoor brands that want a branded repair tool.
• Utility, facility and field technicians - the patent came from a power-supply company - and corporate gifting buyers.

How it works

The main parts

Using it

1. Fan out the handle you need around the pivot (4) - the others act as the grip.
2. Wrench work. Use the open-end (7), box-end (8) or stepped wrench (17) on the nut.
3. Screwdriver work. Take a bit (13 or 14) out of a handle’s hex hole and drop it into the socket head’s magnetic hex hole (11) on the left handle - it becomes a compact screwdriver.
4. Lock the handles. Bits placed in the hex through-holes (15) of stacked handles act as pins, holding the handles together while you apply force.
5. Saw. Slide the magnetic cover (6) out of its slot (16) to expose the saw (5); slide it back when done.
6. Extras. Smooth an edge with the file plate (12), open a bottle with the opener (9), and hang the tool on your wrist with the strap (19).

Why magnets matter

Small bits are the first thing lost from any multi-tool. Here both the bits and the holes that hold them are magnetic, so bits click into place in the handles and in the socket head - and the saw cover stays closed by magnetism too.

Applications

Home repairs

Tightening furniture bolts, adjusting faucets, fixing appliances - jobs that need a wrench and a screwdriver more than pliers.

Bicycles, scooters and motorcycles

Roadside fixes - a loose bolt, a seat or handlebar adjustment - in one tool that fits a saddle bag or tool roll. Wrench sizes can be matched to common bike and motorcycle fasteners.

Camping, fishing and outdoors

Assembling gear, cutting small branches with the saw, opening bottles - with a wrist strap so it is not dropped.

Field and facility technicians

The patent was filed by a power-supply company for everyday field repairs: a pocket tool for quick adjustments between jobs.

Car glovebox kit

A compact emergency tool for battery terminals, loose clamps and small fixes.

Gifts and promotions

A practical branded gift for dealerships, tool shops, outdoor brands and corporate events.

Where it is less suitable

• High-torque work - a pocket multi-tool is no substitute for full-size wrenches and sockets.
• Cutting tasks - a dedicated knife or pliers-based multi-tool is better when cutting and gripping are the main jobs.