Kevin Mark Klughart

PhD, PE, JD, MIP, LLM

Patent Attorney / Engineer

 

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Chin-Up Bar

 

My friend Doug and his son Sam wanted to build a chin-up bar for their garage so that Sam could be ready for his entrance to West Point in the fall, so we had a welding party to fab up something suitable for their garage.

Below are some pictures of Doug and Sam working on the angle iron for the bar supports while I was back in the shop knurling the 5-foot 1-inch diameter pipe for the cross bar.  Doug and Sam didn't have ANY welding experience to speak of before this project but did a great job on the frame drilling, fit-up, and welding.

Here you see the finished chin-up bar mounted to the support beam in the garage.  The triangular support frames were built using 1/4-inch thick 1-inch angle iron with 12/10/16 inch lengths.  The knurled cross-bar is seated in the triangular outbound section of each support frame and MIG welding was used to fill in any gaps around the bar.  Not seen is a piece of 1/2-inch black pipe welded INSIDE the 1-inch ID of the cross-bar to provide additional strength and stiffness given the 5-foot span of the system.

Here is a close-up of the chin-up bar system.  Mounting was accomplished with three 5/16-inch carriage bolts that were parted to 5-inches in length on the lathe.  Here you can also see that the knurling wasn't perfect - I had to do each half of the bar in a separate pass on my 40-inch lathe and one side ended up a bit rougher than the other - I'll do better next time!

The chin-up bar in use!  Sam is really tall, so the system had to be higher than the chin-up bar that it replaced and wide enough to accommodate Sam's long arms!

 

Contact Information:

Kevin Mark Klughart

Registered Patent Attorney, USPTO

3825 Leisure Lane, Denton, TX 76210-5589

tel: 800-353-1211 / 940-320-0580  -  fax 940-320-0581

Kevin@Klughart.com   email  -  web    www.Klughart.com

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