U.S. patent application number 11/177421 was filed with the patent office on 2007-01-11 for retractable inner barrel structure of a bolt.
This patent application is currently assigned to Guay Guay Trading Co., Ltd.. Invention is credited to Yin-Hsi Liao.
Application Number | 20070006720 11/177421 |
Document ID | / |
Family ID | 37617116 |
Filed Date | 2007-01-11 |
United States Patent
Application |
20070006720 |
Kind Code |
A1 |
Liao; Yin-Hsi |
January 11, 2007 |
Retractable inner barrel structure of a bolt
Abstract
A retractable inner barrel structure of a bolt includes a bolt
handle which is installed inside a latching groove of a flexible
outer barrel with a fixing pin and a spring, and is passed through
a gliding groove of a gun barrel, so as to be fixed into a
restraining part of the gliding groove, upon pulling back the
flexible outer barrel. A retractable inner barrel is located inside
the flexible outer barrel, and is provided with two racks at two
sides of the retractable inner barrel. Moreover, a spring for
fixing a gun barrel shroud is mounted on one of the racks, and a
pillar and a seat are also located inside the retractable inner
barrel. The gun barrel shroud is provided with a latching groove
and an adjusting device including a poking switch for adjusting a
trajectory is also installed inside the gun barrel shroud.
Inventors: |
Liao; Yin-Hsi; (Sijhih City,
TW) |
Correspondence
Address: |
TROXELL LAW OFFICE PLLC
SUITE 1404
5205 LEESBURG PIKE
FALLS CHURCH
VA
22041
US
|
Assignee: |
Guay Guay Trading Co., Ltd.
|
Family ID: |
37617116 |
Appl. No.: |
11/177421 |
Filed: |
July 11, 2005 |
Current U.S.
Class: |
89/1.4 ;
89/1.42 |
Current CPC
Class: |
F41A 3/80 20130101; F41A
25/12 20130101; F41A 3/82 20130101; F41A 3/54 20130101; F41A 19/03
20130101 |
Class at
Publication: |
089/001.4 ;
089/001.42 |
International
Class: |
F41F 5/00 20060101
F41F005/00 |
Claims
1. A retractable inner barrel structure of a bolt mainly comprising
a bolt handle, a flexible outer barrel, a retractable inner barrel,
a pillar, a seat, a gun barrel shroud, a safety seat, and an
adjusting device, comprising the bolt handle is installed in a
latching groove of the flexible outer barrel with a fixing pin and
a spring, and is passed through a gliding groove of a gun barrel,
so as to be fixed into a restraining part of the gliding groove
upon pulling back the flexible outer barrel; the retractable inner
barrel being located inside the flexible outer barrel, and racks
being located at two sides of the retractable inner barrel, with a
spring for fixing the gun barrel shroud mounted on one of the
racks; the pillar and the seat being located inside the retractable
inner barrel; the gun barrel shroud being provided with a latching
groove which is corresponding to a latching piece latched on the
safety seat, and the adjusting device being located inside the gun
barrel shroud and a poking switch for adjusting a trajectory being
located on the adjusting device.
Description
BACKGROUND OF THE INVENTION
[0001] (a) Field of the Invention
[0002] The present invention relates to a retractable inner barrel
structure of a bolt, and more particularly to a multi-step
retractable inner barrel structure constituted by a utilization of
a flexible outer barrel, a retractable inner barrel, a pillar, and
a seat.
[0003] (b) Description of the Prior Art
[0004] As shown in FIG. 1 and FIG. 2, a bolt A1 is latched into a
latching groove A2 of an inner barrel A of a conventional firearm.
An elastic spring A3, is located inside the inner barrel A, and is
mounted on a seat A4 at a rear end of the gun barrel. When the bolt
A1 pulls back the inner barrel A, the bolt A1, can be fixed in a
gliding groove A5 of the gun barrel, so as to fix the inner barrel
A in an interior at the rear end of the gun barrel upon putting the
inner barrel A into a holding groove A6 inside the gun barrel.
[0005] However, a part of space inside the firearm needs to be
taken upon installing the inner barrel A of the firearm. Therefore,
it is easy to limit a shape of the firearm when installing the
inner barrel A in various firearms.
[0006] Accordingly, how to eliminate the aforementioned shortcoming
is a technical issue to be solved by the inventor.
SUMMARY OF THE INVENTION
[0007] The present invention is to provide a multi-step retractable
inner barrel structure of a bolt mainly constituted by a flexible
outer barrel, a retractable inner barrel, a pillar, and a seat,
wherein the outer barrel is provided with a latching groove, and a
bolt handle is located inside the latching groove. The bolt handle
is passed through a gliding groove of a gun barrel, so as to be
fixed in a restraining part of the gliding groove when the flexible
outer barrel is pulled back. A gun barrel shroud is located between
the retractable inner barrel and the seat, and is provided with a
latching groove which is corresponding to a latching piece mounted
on a safety seat. When emplacing the retractable inner barrel into
the aforementioned flexible outer barrel, the gun barrel shroud
barrel moves backward simultaneously, so as to expose an adjusting
device inside the gun barrel shroud, this enables a poking switch
on the adjusting device to be used to provide a user to adjust a
trajectory of shooting.
[0008] To enable a further understanding of the said objectives and
the technological methods of the invention herein, the brief
description of the drawings below is followed by the detailed
description of the preferred embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG. 1 shows a perspective view of a conventional
application.
[0010] FIG. 2 shows a schematic view of motion of a conventional
application.
[0011] FIG. 3 shows a perspective view of the present
invention.
[0012] FIG. 4 shows a perspective view of compartments of the
present invention.
[0013] FIG. 5 shows a perspective view of a portion of compartments
of the present invention.
[0014] FIG. 6 shows a schematic view of motion of the present
invention.
[0015] FIG. 7 shows a schematic view of an implementation of the
present invention.
[0016] FIG. 8 shows another schematic view of an implementation of
the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0017] Referring to FIG. 3, FIG. 4, and FIG. 5, a retractable inner
barrel B of a bolt is composed of a bolt handle C, a flexible outer
barrel D, a retractable inner barrel E, a seat F, a gun barrel
shroud G, a safety seat H, and an adjusting device I. The bolt
handle C is installed in a latching groove D1 of the flexible outer
barrel D with a fixing ping C1 and a spring C2. Whereas a bore C3
is located inside the latching groove D1 for fixing the fixing pin
C1. Moreover, the bolt handle C is passed through a gliding groove
C4 of the gun barrel, so as to fix the bolt handle C into a
restraining part C5 of the gliding groove C4 upon pulling back the
flexible outer barrel D.
[0018] A spring D2 is located inside the flexible outer barrel D,
and is connected to the retractable inner barrel E, which is
provided with two racks E1 at two sides. One of the racks E1 is
mounted with a spring G1 for fixing the gun barrel shroud G.
Moreover, a spring E2 is located inside the retractable inner
barrel E, and is connected to a pillar F1 and the seat F. The
flexible outer barrel D, the retractable inner barrel E, the pillar
F1, and the seat F can constitute into the multi-step retractable
inner barrel structure B.
[0019] The gun barrel shroud G is located between the retractable
inner barrel E and the seat F, and is provided with a latching
groove G2 which is corresponding to a latching piece H1 latched
onto the safety seat H. When the retractable inner barrel E is
emplaced into the aforementioned flexible outer barrel D, the gun
barrel shroud G moves backward simultaneously, so as to expose the
adjusting device I inside the gun barrel shroud G, this enables a
poking switch L1 on the adjusting device I to be used to provide a
user to adjust a trajectory of shooting.
[0020] Referring to FIG. 6, FIG. 7, and FIG. 8, upon using the
present invention, the bolt handle C on the flexible outer barrel D
is pulled back so that the bolt handle C can move inside the
gliding groove C4 of the gun barrel and be fixed into the
retraining part C5 of the gliding groove C4. In addition, when the
bolt handle C is fixed into the retraining part C5 of the gliding
groove C4, the retractable inner barrel moves simultaneously to
enter the flexible outer barrel D, thereby accomplishing a first
step of retracing motion.
[0021] However, when the flexible outer barrel D and the
retractable inner barrel E accomplish the aforementioned first step
of retracting motion, the spring E2 located inside the retractable
inner barrel E moves towards the pillar F1 and the seat F
simultaneously, so as to accomplish a second step of retracting
motion between the retractable inner barrel E, the pillar F1, and
the seat F.
[0022] When the spring E2 located inside the retractable inner
barrel E moves to the pillar F1 and seat F, the gun barrel shroud G
and the spring G also move backward at the same time. The gun
barrel shroud G is provided with the latching groove G2 which is
corresponding to the latching piece H1 latched on the safety seat
H. When the aforementioned retractable inner barrel E is emplaced
into the flexible outer barrel D, the gun barrel shroud E moves
backward at the same time, so as to expose the adjusting device I
inside the gun barrel shroud G, this enables the poking switch I1
on the adjusting device I to be used to provide a user to adjust a
trajectory of shooting.
[0023] To further manifest the advancement and practicability of
the present invention, the present invention is compared with a
conventional application as follow:
[0024] Shortcomings of a conventional application
[0025] (1) A holding groove is required for emplacing an inner
barrel.
[0026] (2) A part of space inside a firearm is taken.
[0027] (3) It is easy to limit a shape of a firearm.
[0028] (4) It does not have advancement and practicability.
[0029] Advantages of the present invention
[0030] (1) It is provided with a multi-step retractable inner
barrel structure.
[0031] (2) It can be used in association with a shape of all kinds
of firearm.
[0032] (3) It can save an inner space of firearm.
[0033] (4) It is not easy to limit a shape of firearm.
[0034] (5) It is provided with advancement and practicability.
[0035] (6) It is provided with an industrial competitiveness.
[0036] It is of course to be understood that the embodiments
described herein is merely illustrative of the principles of the
invention and that a wide variety of modifications thereto may be
effected by persons skilled in the art without departing from the
spirit and scope of the invention as set forth in the following
claims.
* * * * *