Handguard for clamping mounting on an existing firearm

Patent metadata

Field	Value
Publication number	US-11892260-B2
Application number	US-202017757291-A
Country	US
Kind code	B2
Filing date	Nov 23, 2020
Priority date	Dec 13, 2019
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A handguard for mounting on a firearm with a housing axis, including: a housing with a slit and with a clamping device including a lever with a center element which lies in a normal plane to the housing axis in a through-opening. It has a recess in its central region, a thread at one end, a lever arm at the other end, and a nut with an internal thread. According to the invention, the center element has a conical nut section. In the assembled state, a nut is screwed onto the thread and thus the center element is arranged in an annular groove of the travelling nut so as to make contact with the center element.

First claim

The invention claimed is:

1. A handguard for mounting on a barrel or a barrel nut of an existing firearm, where the barrel or barrel nut has an annular groove, the handguard comprising:
a handguard housing having a housing axis, the handguard housing defining a slit running radially thereto, and further defining a through-opening running in a transverse direction, where the through-opening is a long hole having an outline comprised of two semicircles with a first axis and a second axis parallel to the first axis, with a rectangle located in-between; and
a clamping device for mounting in the through-opening of the handguard housing, the clamping device having a lever that defines a lever axis and that includes:
a center element having a recess in a center area of the center element, the center element extending along and surrounding the lever axis and having a threaded section at a first end portion and a lever arm at a second end portion, where a conical shaft section is provided at the second end portion that widens towards the lever arm and is configured to contact a corresponding conical clamping surface of the handguard housing; and
a nut having an internal thread that matches the threaded section of the first end portion of the center element;

such that when the handguard is in its assembled state, the lever is disposed in the through-opening of the handguard housing in a plane normal to the handguard axis, the nut is screwed onto the threaded section thereby narrowing the slit, and an angular position of the lever about the lever axis is such that the center element contacts the annular groove of the barrel or barrel nut.

2. The handguard according to claim 1 , wherein:
the center element is further provided with an annular groove at its first end portion;
the nut includes the internal thread in a first axial section of the nut, the first axial section being provided with a conical nut section on an outer surface, and a bore with a larger diameter than the internal thread in the first axial section is formed in a second axial section, and a safety ring is inserted into the annular groove of the first end portion.

3. The handguard according to claim 2 , wherein the long hole of the handguard housing includes a conical clamp taper surface at each end of the long hole, each conical clamp taper surface being centrally formed about the first axis of the through-opening outline and the conical clamp taper surfaces being configured to cooperate with the conical shaft section and the conical nut section, respectively.

Assignees

• Glock Tech Gmbh

Inventors

• Markut Karl
• Nolte Patrick

Classifications

• F41A21/325 Primary

  Mountings for muzzle attachments · CPC title

• F41A21/30

  Silencers · CPC title

• F41A21/481

  using partial or interrupted threads, e.g. bayonet-type mountings · CPC title

• F41A21/484

  using interlocking means, e.g. by sliding pins · CPC title

• F41A21/485

  using screws or bolts · CPC title