Montana Patent of the Month – August 2021

Mechanics often need to reshape and straighten out vehicle body frames. This requires a good amount of force being applied to the metal frame and might use some custom machines to do this for them. Unfortunately, due to the complex shapes and hard to reach locations, mechanics often have to apply a good deal of manual force as well. This manual force is usually applied with a hammer and chisel, which unfortunately sends much of the force back through the hands and arms of the user – creating constant pain and discomfort. Anerob, LLC developed a new method of achieving the same result without the chronic fatigue.

They developed a slide hammer device which can transfer the force of impact to a specific targeted object and ultimately minimizes the kickback force transferred to the user. The slide hammer has three main components – a guide sleeve, plunger, and impact head. The plunger is inserted within the guide sleeve and the impact head is secured within the guide sleeve. When the plunger is moved forward, it contacts the portion of impact head that communicates with the guide sleeve. The impact head can be fitted with different end tips to allow for customization of the applied force. It is also equipped with a removable handle which mounts to the guide sleeve to reduce the shock of impact. It can also be adjusted to deliver variable amounts of force by adding weights to the plunger. The device’s drive bar or plunger applies forces in two opposite directions – a hammering force towards the car frame and a tension or withdrawing force in the other direction. This design allows for manual force to be applied in hard to reach places without the negative impact on the user.

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