IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0544009
(1983-10-21)
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발명자
/ 주소 |
- Bredbury, Seth K.
- Waterman, Jr., Harold J.
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| 출원인 / 주소 |
- Colt Industries Operating Corp.
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| 대리인 / 주소 |
Luther, Radford W.Dornon, Richard A.
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| 인용정보 |
피인용 횟수 :
91 인용 특허 :
0 |
초록
▼
A round handguard assembly for a rifle barrel (18) has substantially identical bottom and top mating sections (26, 28) covering the barrel. Each section has a generally cylindrical outer shell (32) and a generally cylindrical liner (34). Each shell has a plurality of centrally located vent holes (36
A round handguard assembly for a rifle barrel (18) has substantially identical bottom and top mating sections (26, 28) covering the barrel. Each section has a generally cylindrical outer shell (32) and a generally cylindrical liner (34). Each shell has a plurality of centrally located vent holes (36) arranged in a longitudinal row and three equally spaced lugs (52, 54, 56) on its front end. Each liner has a rear segment devoid of vent holes with a flange (62) projecting from one of its sides and a front segment with a plurality of centrally located vent holes (60) arranged in a longitudinal row and registering with certain of the vent holes in the shell. The flanges on each liner overlap a side of the confronting liner to provide a radially sealed annular volume around the barrel for preventing heat transfer to the rear portions of the shells so that a user may comfortably grip the handguard assembly. The lugs on the front of the handguard assembly may accommodate a triangular cap (25) or a round cap.
대표청구항
▼
1. A handguard assembly for a rifle barrel comprising: first and second shells having generally semicylindrical shapes, each shell having a plurality of vent holes arranged in a longitudinal row in the center thereof extending substantially from the front to the rear of the shell, the first shell
1. A handguard assembly for a rifle barrel comprising: first and second shells having generally semicylindrical shapes, each shell having a plurality of vent holes arranged in a longitudinal row in the center thereof extending substantially from the front to the rear of the shell, the first shell being adapted to be placed over the top of the barrel with the sides of the first shell disposed laterally of the barrel and the second shell adapted to be placed under the bottom of the barrel with the sides of the second shell disposed laterally of the barrel in mating engagement with the sides of the first shell so as to define a generally cylindrical handguard around the barrel, the front and rear of the shells having surfaces for mounting the handguard upon the barrel and clamping the first shell and second shell together to hold the sides thereof in mating engagement; a first liner, having a forward segment and a rear segment, of generally semi-cylindrical configuration mounted in the first shell, the forward segment of the first liner having a plurality of vent holes which define a centrally disposed longitudinal row, the vent holes in the forward segment of the first liner registering with certain of the vent holes in the first shell for cooling the barrel, the rear segment of the first liner covering the adjacent vent holes in the first shell and having a flange which projects from a side thereof; and a second liner, having a forward segment and a rear segment, of generally semi-cylindrical configuration mounted in the second shell, the forward segment of the second liner having a plurality of vent holes which define a centrally disposed longitudinal row, the vent holes in the forward segment of the second liner registering with certain of the vent holes in the second shell for cooling the barrel, the rear segment of the second liner covering the adjacent vent holes in the second shell and having a flange which projects from a side thereof, the flange of the second liner overlapping a side of the first liner and the flange of the first liner overlapping a side of the second liner for radially sealing the annular volume between the barrel and the rear segments of the first and second liners to reduce heat flow to the rear portions of the shells where a user's hand may be placed. 2. A handguard assembly, as defined in claim 1, further comprising: a plurality of spaced lugs on the front of the first shell; and a plurality of spaced lugs on the front of the second shell, the lugs of the first and second shells arranged in a circular array for defining the front mounting and clamping surfaces which may accommodate either a triangular cap or a circular cap. 3. A handguard assembly, as defined in claim 2, wherein plurality of spaced lugs on the second shell is constituted by three lugs on the front of each shell. 4. A handguard assembly, as defined in claim 1, wherein the first and second shells each further comprise: a plurality of ribs on the interior of the shell and a plurality of ribs on the exterior of the shell. 5. A handguard assembly, as defined in claim 4, wherein each liner further comprises: a plurality of tabs extending laterally from the sides thereof into certain of the ribs of the associated shell. 6. A handguard assembly, as defined in claim 5, wherein the sides of the first and second shells comprise: means to interlock the first and second shells. 7. A handguard assembly, as defined in claim 6, wherein the first and second shells and the first and second liners are of identical construction. 8. A section of a rifle barrel handguard assembly adapted to be formed by two substantially identical sections which section comprises: a shell having a generally semi-cylindrical shape, the shell having a plurality of vent holes arranged in a longitudinal row in the center thereof extending substantially from the front to the rear of the shell, the shell being adapted to be placed around a barrel with the sides of the shell disposed laterally of the barrel, the front and rear of the shell having surfaces for mounting the shell upon the barrel and clamping the shell and an identical shell together; and a liner, having a forward segment and a rear segment, of generally semi-cylindrical configuration, mounted in the shell, the forward segment of the liner having a plurality of vent holes which define a centrally disposed longitudinal row, the vent holes in the forward segment of the liner registering with certain of the vent holes in the shell for cooling the barrel, the rear segment of the liner covering the adjacent vent holes in the shell and having a flange which projects from a side thereof. 9. A section, as defined in claim 8, further comprising: a plurality of spaced lugs on the front of the shell arranged in a semi-circular array for defining the front mounting and clamping surfaces. 10. A section, as defined in claim 9, wherein the plurality of spaced lugs on the shell is constituted by three lugs on the front of the shell. 11. A section, as defined in claim 8, wherein the shell further comprises: a plurality of ribs on the interior of the shell and a plurality of ribs on the exterior of the shell. 12. A section, as defined in claim 11, wherein the liner further comprises: a plurality of tabs extending laterally from the sides thereof into certain of the ribs of the shell.
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