Double acting, pneumatic bolt and sear buffer for automatic cannon
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IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0024185
(1979-03-27)
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발명자
/ 주소 |
- Stoner Eugene M. (Stuart FL) Gillum Richard R. (Marblehead OH)
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출원인 / 주소 |
- ARES, Inc. (Port Clinton OH 02)
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인용정보 |
피인용 횟수 :
4 인용 특허 :
0 |
초록
▼
For an automatic cannon, a pneumatic bolt and sear buffer comprises a housing fixed rearwardly of a breech ring, a cylinder, an end plate and a low mass piston projecting forwardly through the cylinder. A pin transversely installed through the piston, into slots in the cylinder and housing, limits r
For an automatic cannon, a pneumatic bolt and sear buffer comprises a housing fixed rearwardly of a breech ring, a cylinder, an end plate and a low mass piston projecting forwardly through the cylinder. A pin transversely installed through the piston, into slots in the cylinder and housing, limits relative axial movement between the piston, cylinder and housing. A forward cylinder flange also limits rearward cylinder movement relative to the housing. Pressurization of gas in a pressure chamber defined by the cylinder, piston and end plate is through an end plate valve. A bolt sear is pivotally mounted to a sear bracket extension of the cylinder, forwardly of the piston. After firing, recoil impact of a reciprocating bolt assembly drives the piston rearwardly into the cylinder, and upon bolt searing the cylinder is pulled forwardly relative to the piston; in both cases the buffer gas is further compressed, acting as a massless spring. A sear support or keeper is provided to prevent hitting and bouncing of the sear by the searing up.
대표청구항
▼
In an automatic cannon having a breech, a bolt assembly mounted for reciprocating movement along a recoil and counterrecoil path and triggering means for selectively controlling movement of the bolt assembly and firing of the cannon, double acting recoil and sear buffer apparatus, which comprises: (
In an automatic cannon having a breech, a bolt assembly mounted for reciprocating movement along a recoil and counterrecoil path and triggering means for selectively controlling movement of the bolt assembly and firing of the cannon, double acting recoil and sear buffer apparatus, which comprises: (a) a buffer housing disposed on the cannon rearwardly of the breech; (b) a pneumatic buffer disposed in the housing, said buffer including a cylinder, means for closing a rearward end of the cylinder and a piston axially slidably disposed in the cylinder, said buffer further including searing means fixed to forward regions of the cylinder and responsive to the triggering means for searing up the bolt assembly on counterrecoil thereof, said cylinder, said means for closing the rearward end thereof and said piston forming a gas pressure chamber adapted for containing a pressurized gas, said piston being operative for being driven rearwardly and compressing the pressurized gas contained in the pressure chamber in response to rearwardly directed bolt assembly recoil impact, said pressurized gas in the pressure chamber re-expanding after bolt assembly recoil is stopped to drive the bolt assembly towards the breech at a counterrecoil velocity approximately equal to bolt assembly recoil velocity, and said cylinder being operative for being driven forwardly and compressing the pressurized gas contained in the pressure chamber in response to forwardly directed searing up impact of the bold assembly against said searing means to soften bolt assembly searing up; and, (c) travel limiting means for preventing rearward axial movement of the cylinder when the piston is driven rearwardly in response to bolt assembly recoil impact thereagainst and for preventing forward axial movement of the piston when the cylinder is driven forwardly in response to searing up impact of the bolt assembly against the searing means; said travel limiting means including means defining corresponding slots in the housing and in the cylinder forwardly of the pressure chamber, said slots being elongated in a direction parallel to a barrel bore axis, said travel limiting means further including a piston pin mounted in the piston along an axis orthogonal to said bore axis, ends of the pin extending into said corresponding slots, axial travel of the pin and the piston in both rearward and forward axial directions, relative to the cylinder and housing, being thereby limited.
이 특허를 인용한 특허 (4)
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Karagias, Theodore, Multi-caliber firearms, bolt mechanisms, bolt lugs, and methods of using the same.
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Karagias, Theodore, Multi-caliber firearms, bolt mechanisms, bolt lugs, and methods of using the same.
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Chambers, Scott E.; Rahim, Rick, Pneumatically powered impact device and method.
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Karagias, Theodore, Trigger mechanism and a firearm containing the same.
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