A clamping mechanism for attaching a handguard to a firearm includes a barrel nut having radially outwardly directed tines, a tubular body having a plurality of longitudinal grooves separated by lands forming an inner surface of the tubular body, and a pair of circumferentially extending grooves tra
A clamping mechanism for attaching a handguard to a firearm includes a barrel nut having radially outwardly directed tines, a tubular body having a plurality of longitudinal grooves separated by lands forming an inner surface of the tubular body, and a pair of circumferentially extending grooves traversing the lands, formed forward from a rearward end of the tubular body. A clamp element is carried by the tubular body and includes a body with a beveled end and a heel extending substantially perpendicularly from an opposing end of the body. The clamp element is adjustably positioned within the tubular body with the heel extending radially outwardly and received in the second groove and the beveled end engages the barrel nut.
대표청구항▼
1. A handguard system for use on a firearm having a receiver, a barrel and a barrel nut affixing the barrel to the receiver, the barrel nut having radially outwardly directed tines spaced about an outer periphery thereof, the handguard system comprising: a tubular body having a rearward end, a forwa
1. A handguard system for use on a firearm having a receiver, a barrel and a barrel nut affixing the barrel to the receiver, the barrel nut having radially outwardly directed tines spaced about an outer periphery thereof, the handguard system comprising: a tubular body having a rearward end, a forward end and an inner surface, the tubular body receivable over the barrel of a firearm with the rearward end receivable over the barrel nut;a plurality of longitudinal grooves separated by lands forming the inner surface of the tubular body and extending longitudinally from the rearward end toward the forward end, the plurality of longitudinal grooves being spaced apart around the periphery of the inner surface so as to correspond with the tines on the barrel nut;the lands are traversed by a first circumferentially extending groove formed forward from the rearward end of the tubular body so as to receive the tines of the barrel nut therein, and a second circumferentially extending groove spaced forwardly to and parallel with the first circumferentially extending groove; anda clamp element having a body with a beveled end and a heel extending substantially perpendicularly from an opposing end of the body, adjustably positioned within the tubular body with the heel extending radially outwardly and received in the second groove. 2. A handguard system as claimed in claim 1 wherein the clamp element further includes a threaded aperture formed through the body and a fastener inserted through the tubular body and received in the threaded aperture. 3. A handguard system as claimed in claim 1 further including a second clamp element having a body with a beveled end and a heel extending substantially perpendicularly from an opposing end of the body, adjustably positioned within the tubular body with the heel extending radially outwardly and received in the second groove. 4. A handguard system as claimed in claim 1 further including a mounting rail on an upper surface of the tubular body axially alignable with a mounting rail on the upper surface of the firearm receiver. 5. A firearm comprising: a receiver;a barrel extending from the receiver and terminating in a muzzle;a barrel nut affixing the barrel to the receiver, the barrel nut having radially outwardly directed tines spaced about an outer periphery thereof;a tubular body having a rearward end, a forward end and an inner surface, the tubular body received over the barrel with the rearward end received over the barrel nut;a plurality of longitudinal grooves separated by lands forming the inner surface of the tubular body and extending longitudinally from the rearward end toward the forward end, the plurality of longitudinal grooves being spaced apart around the periphery of the inner surface so as to correspond with the tines on the barrel nut;the lands are traversed by a first circumferentially extending groove formed forward from the rearward end of the tubular body, and a second circumferentially extending groove spaced forwardly to and parallel with the first circumferentially extending groove;wherein the tubular body is rotatable between an installation position with the plurality of longitudinal grooves aligned with the tines of the barrel nut, in which position the tubular body is slidably movable over the barrel nut until the tines reach the first circumferential groove, and a secure position wherein the tines move within the first circumferential groove until they are positioned behind the lands; anda clamp element having a body with a beveled end and a heel extending substantially perpendicularly from an opposing end of the body, adjustably positioned within the tubular body with the heel extending radially outwardly and received in the second groove and the beveled end engaging the barrel nut. 6. A firearm as claimed in claim 5 wherein the clamp element further includes a threaded aperture formed through the body and a fastener inserted through the tubular body and received in the threaded aperture, the fastener movable to a tightened position forcing the tubular body forwardly against the tines of the barrel nut at the first circumferential groove. 7. A firearm as claimed in claim 5 further including a second clamp element having a body with a beveled end and a heel extending substantially perpendicularly from an opposing end of the body, adjustably positioned within the tubular body with the heel extending radially outwardly and received in the second groove. 8. A firearm as claimed in claim 5 further including a mounting rail on an upper surface of the tubular body axially aligned with a mounting rail on the upper surface of the firearm receiver with the tubular body in the secured position. 9. A clamping mechanism for attaching a handguard to a firearm comprising: a barrel nut having radially outwardly directed tines spaced about an outer periphery thereof;a tubular body having a rearward end, a forward end and an inner surface, the rearward end of the tubular body received over the barrel nut;a plurality of longitudinal grooves separated by lands forming the inner surface of the tubular body and extending longitudinally from the rearward end toward the forward end, the plurality of longitudinal grooves being spaced apart around the periphery of the inner surface so as to correspond with the tines on the barrel nut;the lands are traversed by a first circumferentially extending groove formed forward from the rearward end of the tubular body, and a second circumferentially extending groove spaced forwardly to and parallel with the first circumferentially extending groove;wherein the tubular body is rotatable between an installation position with the plurality of longitudinal grooves aligned with the tines of the barrel nut, in which position the tubular body is slidably movable over the barrel nut until the tines reach the first circumferential groove, and a secure position wherein the tines move within the first circumferential groove until they are positioned behind the lands; anda clamp element having a body with a beveled end and a heel extending substantially perpendicularly from an opposing end of the body, adjustably positioned within the tubular body with the heel extending radially outwardly and received in the second groove and the beveled end engaging the barrel nut. 10. A clamping mechanism as claimed in claim 9 wherein the clamp element further includes a threaded aperture formed through the body and a fastener inserted through the tubular body and received in the threaded aperture, the fastener movable to a tightened position forcing the tubular body forwardly against the tines of the barrel nut at the first circumferential groove. 11. A clamping mechanism as claimed in claim 9 further including a second clamp element having a body with a beveled end and a heel extending substantially perpendicularly from an opposing end of the body, adjustably positioned within the tubular body with the heel extending radially outwardly and received in the second groove.
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이 특허에 인용된 특허 (7)
Gwinn, Jr., Mack W., Firearm barrel change apparatus.
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