초록 ▼

Disclosed herein is an object that has two threads of different pitches. The two threads overlap and may have a common starting point. The object may be any type of threaded insert, including those commonly referred to as a type of nut or rivet such as a clinch-nut, a weld-nut and a rivet-nut. Also

Disclosed herein is an object that has two threads of different pitches. The two threads overlap and may have a common starting point. The object may be any type of threaded insert, including those commonly referred to as a type of nut or rivet such as a clinch-nut, a weld-nut and a rivet-nut. Also disclosed is a system having a part and the disclosed insert installed onto it. Embodiments of the invention reduce the likelihood of damage when a screw is miss-matched with a similarly sized but different threaded hole.

대표청구항 ▼

1. An insert comprising: a first female thread of a first pitch; anda second female thread of a second pitch that is different from the first pitch and overlapping said first female thread;wherein the two threads also differ in diameters and/or thread form;wherein said first female thread and said s

1. An insert comprising: a first female thread of a first pitch; anda second female thread of a second pitch that is different from the first pitch and overlapping said first female thread;wherein the two threads also differ in diameters and/or thread form;wherein said first female thread and said second female thread have a common starting point at least in one end of said insert to prevent the damage associated with a miss matched screw installment. 2. The insert of claim 1, wherein the insert is a threaded insert for installation in a bulk object. 3. The insert of claim 2, wherein the insert has a blind hole. 4. The insert of claim 2, wherein the insert has a through hole. 5. The insert of claim 1, wherein the insert is a threaded insert for installation in a sheet-metal object. 6. The insert of claim 1, wherein the insert is produced from a metal or metallic alloy and hardened. 7. The insert of claim 6, wherein hardening thereof results from through hardening. 8. The insert of claim 6, wherein hardening thereof results from case hardening. 9. A system comprising the insert of claim 1 inserted into a part, wherein the part is made of a different material than the insert. 10. The insert of claim 1 further comprising: an extraction-resistant engageable exterior.