Ordnance – Automatic – Buffers and brakes
Reexamination Certificate
1999-03-29
2001-02-27
Poon, Peter M. (Department: 3644)
Ordnance
Automatic
Buffers and brakes
C089S044020
Reexamination Certificate
active
06192780
ABSTRACT:
FIELD OF INVENTION
This invention relates to reducing the impact between a bolt carrier and a receiver on a gun. More particularly this invention relates to a buffer which is designed to be positioned on a rear portion of a front receiver lug post on the gun so that when the bolt carrier springs forward the impact of the bolt carrier striking and abruptly stopping against the receiver lug post will be minimized.
BACKGROUND OF THE INVENTION
In the AK47 and AKM family of semi-automatic Kalashnikov family of rifles the bolt carrier has a substantial mass. When it is blown back a substantial portion of its energy is absorbed by a long coiled spring. Any excess energy is dissipated on an impact area on the rear receiver of the gun. When the bolt carrier slides forward it is accelerated by the long coiled spring. All of its forward momentum is dissipated at the end of the forward stroke when it strikes and abruptly stops against the forward receiver post.
Others have recognized the need to cushion the impact between the steel bolt carrier and the steel receiver. Providing cushioning therebetween will quieten operation and extend the life of the gun. One solution has been to provide for a cushion insert positioned over the coiled spring, which extends downwardly immediately in front of the impact area on the rear receiver. While this protects the rear receiver, it does nothing to protect the smaller lug post on the forward receiver. Something is needed to protect the lug post and the bolt carrier when they strike each other.
OBJECTS AND STATEMENT OF INVENTION
It is an object of this invention to disclose a means to protect a lug post on the forward receiver of a gun from abrupt impact received when the bolt carrier abruptly stops thereon. It is an object of this invention to extend the life of a firearm. It is yet a further object of this invention to disclose a means of positioning and maintaining a shock absorption buffer adjacent to a rear portion of the forward lug post on the receiver of a gun to cushion the abrupt stop of the bolt carrier against it.
One aspect of this invention provides for a forward receiver buffer for cushioning the impact of a bolt carrier against the lug post on the forward receiver of a gun comprising: an elongate attachment member having an attachment arm on a front end portion and a shock absorption block attachment means on an opposite rear end portion thereof; and, a shock absorption block attached to be rear end portion of the elongate attachment member. In use the receiver buffer is pressed over the lug post on the receiver of the gun so that the shock absorption block covers a rear end portion of the lug post.
Another aspect of this invention provides for a forward receiver buffer as above wherein the gun has a receiver cover and wherein the attachment member comprises a thin strip so that when it is operatively positioned laterally over the lug post the cover may enclose the attachment member.
Various other objects, advantages and features of novelty which characterize this invention are pointed out with particularity in the claims which form part of this disclosure. For a better understanding of the invention, its operating advantages, and the specific objects attained by its users, reference should be made to the accompanying drawings and description, in which preferred embodiments of the invention are illustrated.
REFERENCES:
patent: 3568565 (1971-03-01), Swieskowski
patent: 3580132 (1971-05-01), Vartanian
patent: 3656400 (1972-04-01), Stoner et al.
patent: 3756121 (1973-09-01), Roy
patent: 4183510 (1980-01-01), Kontis
patent: 4335644 (1982-06-01), Goes et al.
patent: 4514921 (1985-05-01), Burkleca
patent: 4558628 (1985-12-01), Bosshard
patent: 4754689 (1988-07-01), Grehl
patent: 4827829 (1989-05-01), Stoner
patent: 5056410 (1991-10-01), Pitts
patent: 5581046 (1996-12-01), Weldle et al.
patent: 5909002 (1999-06-01), Atchisson
patent: 3612098 (1986-10-01), None
patent: 3911280 (1990-11-01), None
patent: 2043845 (1980-10-01), None
Gallinger G. F.
Nelson Judith A.
Poon Peter M.
LandOfFree
Forward receiver buffer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Forward receiver buffer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Forward receiver buffer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2604231