Buffer tube
US8468729B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2011 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Jun 23, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A3/84
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is an improved buffer tube assembly comprising a buffer tube having a longitudinal forward end, a longitudinal rearward end, and an inner annular surface. The buffer tube further comprises an attachment location operably configured to couple the buffer tube to a lower receiver of a firearm. One novel feature is a dead blow buffer positioned at the longitudinally rearward portion of the buffer tube. The buffer tube comprising an external surface configured to fit within and substantially in contact with the internal bore surface of the buffer tube, wherein the dead blow buffer is configured to receive an impact from a buffer that is attached to a buffer spring fitted within the buffer tube. In one form, the dead blow buffer is positioned between the rearmost portion of the inner annular surface of the buffer tube and the buffer spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.