US 6,499,245 B1
Modular sleeve yoke
Richard E. Swan,
171 West. St.,
E. Bridgewater, Mass. 02333 (US)
Assigned to SPID 2002 Corp.,
Woodmere, N.Y. (US)
Filed on 01-Feb-2002, as Appl. No. SPID 2002 Corp.,
Woodmere, N.Y. (US)
Int. Cl.7F41C 23/00
U.S. Cl. 42-71.01
10 Claims
US 6,499,245 B1
Modular sleeve yoke
Richard E. Swan,
171 West. St.,
E. Bridgewater, Mass. 02333 (US)
Filed on Feb. 01, 2002, as Appl. No. 10/61,515.
Application 10/061515 is a continuation in part of application No. 10/007590, filed on Dec. 10, 2001.
Claims priority of provisional application 60/274147, filed on Mar. 09, 2001.
Int. Cl.7F41C 23/00
U.S. Cl. 428212;71.01
10 Claims
1. In combination:
a modular sleeve for interfacing modular enhancements to a firearm, said firearm having minimally a receiver with a stock
and barrel attached thereto, said barrel defining the forward portion of the firearm and said stock defining the rearward
portion of the firearm, said firearm longitudinal axis being defined as horizontal and running from said stock through said
receiver to said barrel, said receiver having a forward portion, a top and a rearward portion, said barrel being joined to
the forward portion of the receiver, said stock being joined to the rearward portion of the receiver, said barrel being detachable
secured to a screw-threaded barrel port on said receiver forward portion by means of a barrel nut having a generally cylindrical
body with a central longitudinal threaded opening permitting the nut to be slid over the firearm barrel, said barrel nut threaded
opening adapted to engage the screw-threaded barrel port, said barrel nut having a forward end with a plurality of prongs
protruding radially outward from the barrel nut body, said modular sleeve comprising:
a universal receiver sleeve having a top side, an underside and two opposite sides connecting said top side with said underside,
said universal receiver sleeve being further defined as having a forward portion and a rear portion, the underside of the
rear portion of the universal receiver sleeve being fixedly attached to the firearm receiver top, said receiver sleeve forward
portion extended forward above the firearm barrel;
an upper handguard piece having a front, rear, top, open bottom, opposing sides, outer side surfaces and inner side surfaces,
said top, sides and bottom defining a hollow interior, said front and rear defining an upper handguard piece longitudinal
axis, said upper handguard piece top being joined to the underside of the forward portion of the receiver sleeve, each said
outer side surface having two longitudinal channels formed therein, a large and shallow upper channel and a bottom interface
channel, said channels being separated by a longitudinal element, said bottom interface channel being positioned near to the
upper hand guard piece bottom, said upper handguard piece having a small, circular horizontal aperture formed through each
upper hand guard piece side near to the rear in the bottom interface channel;
a bottom handguard piece having a front, rear, open top, bottom, opposing sides, outer side surfaces and inner side surfaces,
said bottom, sides and top defining a hollow interior, said front and rear defining a bottom handguard piece longitudinal
axis, said bottom handguard piece being removably attached to the upper handguard piece;
wherein, said upper handguard piece and attached bottom handguard piece surround the firearm barrel without touching said
barrel;
a modular sleeve yoke, comprising:
a U-shaped device having two upright elements interconnected by a curvilinear element, said device having a top, bottom, front,
rear and two opposite sides, said curvilinear element containing said device bottom, said upright elements terminating at
the device top, said upright elements being generally rectangular block-like elements protruding forwardly away from said
device rear, each upright element having two sides, each upright element having at least one threaded, lateral aperture formed
therethrough, said device rear having a channel flange formed on the curvilinear element at the device bottom opening upward;
wherein, said device rear is positioned at and against the forward end of the barrel nut, said device adapted to engage the
barrel nut body while the channel flange a plurality of prongs;
a threaded screw inserted through each upper handguard piece small, circular horizontal aperture for threaded engagement with
each device upright element threaded, lateral aperture.