Bolt Buffer and Firearm

Abstract

Firearms and buffer systems having a second buffer spring or having a buffer spring and a buffer adjusting nut, for instance, to absorb recoil energy, reduce recoil forces, or both. In some embodiments, a first buffer spring is aft of the bolt assembly and a second buffer spring is forward of the first buffer spring, forward of the carrier assembly, or a combination thereof. In some embodiments, a buffer adjusting nut adjusts preload of the second buffer spring, contacts the second buffer spring, or both. In particular embodiments, a buffer weight is located between the first buffer spring and the carrier assembly or the second buffer spring, the first buffer spring is longer than the second buffer spring, the first buffer spring is less stiff than the second buffer spring, the first buffer spring and the second buffer spring have a common axis, or a combination thereof.

Description

RELATED PATENT APPLICATIONS[0001]This patent application claims priority to U.S. Provisional Patent Application No. 61 / 932,874, filed on Jan. 29, 2014, titled BOLT BUFFER AND FIREARM, which has at least one inventor in common with the current patent application and the same assignee. The contents of this priority provisional patent application are incorporated herein by reference. This patent application also claims priority, as a continuation-in-part patent application, to U.S. Non-Provisional patent application Ser. No. 14 / 593,116, filed on Jan. 9, 2015, titled CARRIER GUIDE AND FIREARM, which has at least one inventor in common with the current patent application and the same assignee. The contents of this priority non-provisional patent application are also incorporated herein by reference.FIELD OF THE INVENTION[0002]Various embodiments of this invention relate to firearms. Particular embodiments relate to firearms having bolt buffer springs that reduce recoil forces.BACKGROUND ...

AI Technical Summary

Benefits of technology

The patent describes improvements to firearms that make them more reliable, durable, adaptable, and easy to use. These improvements involve absorbing more of the recoil energy by the firearm and making it more comfortable and smoother to operate. These improvements also make firearms more robust, durable, and easier to maintain. Overall, these improvements enhance the performance and reliability of firearms while reducing their cost and lifecycle costs.

Problems solved by technology

Main buffer springs, however, typically have not absorbed all of the recoil of a firearm.

If a main buffer spring is selected to be stiff enough to absorb all of the recoil, the buffer spring has been found to be too stiff to allow the operator to pull back the charging handle to charge the weapon.

As a result, a significant portion of the recoil forces have been absorbed by the operator's shoulder, which has caused the operator discomfort, soreness, fatigue, and distraction, among other things.

These effects can be particularly negative when the weapon is fired repeatedly, the operator is small or frail, the operator is already injured or sore, the operator is inexperienced, the operator does not hold the weapon properly, or the charge is particularly powerful.

Images