Mechanical guns and projectors – Fluid pressure – Provided by movement of user-actuated – projector-mounted...
Reexamination Certificate
2001-01-10
2002-04-16
Jordan, Charles T. (Department: 3644)
Mechanical guns and projectors
Fluid pressure
Provided by movement of user-actuated, projector-mounted...
C124S058000, C124S059000, C124S060000, C124S061000, C124S063000, C124S064000, C124S065000, C124S067000, C124S068000, C124S069000, C124S070000
Reexamination Certificate
active
06371099
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a paint ball gun, more particularly to a paint ball gun which prevents injury to the body and the face of the user during operation thereof.
2. Description of the Related Art
Referring to
FIGS. 1
to
3
, a conventional paint ball gun is shown to include a gun handle
1
and a gun barrel
2
mounted on the gun handle
1
. The gun handle
1
has a downwardly extending handgrip portion, and is mounted with a trigger
113
and an upwardly projecting latch member
101
that is operably associated with the trigger
113
. The gun barrel
2
is formed with a longitudinally extending propelling chamber
201
, a longitudinally extending recuperator chamber
202
parallel to and below the propelling chamber
201
, and a longitudinally extending communicating slot
203
to intercommunicate the propelling and recuperator chambers
201
,
202
. A loading tube
4
is mounted on the gun barrel
2
, and is communicated with a front chamber portion of the propelling chamber
201
such that the propelling chamber
201
can be loaded with a paint ball (not shown) via the loading tube
4
. The gun barrel
2
is provided with an adapter
8
for communicating a front chamber portion of the recuperator chamber
202
with a high-pressure gas cylinder (not shown). The recuperator chamber
202
has a spring-loaded valve unit
6
disposed in the front chamber portion thereof, and a spring-loaded recuperating unit
7
disposed in a rear chamber portion thereof. The recuperating unit
7
has a recuperator member
902
disposed slidably in the recuperator chamber
202
between the valve unit
6
and a compression spring
703
of the recuperating unit
7
. The recuperator member
902
is formed with a latch groove
9022
for engaging the latch member
101
, and an engaging hole
9021
for engaging a connecting rod
903
that extends through the communicating slot
203
. A propelling member
901
is disposed slidably in the propelling chamber
201
, and is connected to the recuperator member
22
by means of the connecting rod
903
, which engages an engaging hole
9014
in the propelling member
901
. The connecting rod
903
extends transversely between the propelling member
901
and the recuperator member
902
, and is slidable along the communicating slot
203
such that the propelling member
901
is movable together with the recuperator member
902
within the gun barrel
2
. The propelling member
901
has a rear end provided with an operating knob
9015
which is disposed externally of the propelling chamber
201
and which is operable to pull the propelling member
901
rearwardly so as to move the recuperator member
902
rearwardly for engaging the latch groove
9022
with the latch member
101
and so as to dispose a front end
9011
of the propelling member
901
rearwardly of a lower end of the loading tube
4
to permit loading of a paint ball into the propelling chamber
201
via the loading tube
4
. With further reference to
FIG. 4
, when the trigger
113
is subsequently operated to disengage the latch member
101
from the latch groove
9022
, the propelling member
901
and the recuperator member
902
are forced to move forwardly due to biasing action of the spring
703
to propel the paint ball from the front end of the propelling chamber
201
. Upon moving forward, the recuperator member
902
pushes a piston rod
603
of the valve unit
6
forwardly to permit the high pressure gas in the cylinder to be introduced into the recuperator chamber
202
. The high pressure gas thus forces the recuperator member
902
to move rearwardly so as to once again engage the latch groove
9022
with the latch member
101
in preparation for a subsequent operation. At this time, the propelling member
901
and the operating knob
9015
thereon are moved rearwardly together with the recuperator member
902
to permit loading of a succeeding paint ball. Therefore, the operating knob
9015
is operated only during an initial operation. In the subsequent operations, the recuperator member
902
is pushed rearwardly to engage the latch member
101
by means of the high-pressure gas released from the cylinder, and the propelling member
901
moves rearwardly with the recuperator member
902
.
However, since the operating knob
9015
projects from a rear end of the gun barrel
2
, and moves fast in the rearward direction due to the high-pressure gas released from the cylinder after each operation, it is very likely that the operating knob
9015
can injure the face or the body of the user during use of the conventional paint ball gun.
SUMMARY OF THE INVENTION
Therefore, the main object of the present invention is to provide a paint ball gun which can solve the aforementioned problem of the prior art.
Accordingly, the paint ball gun of the present invention includes a gun handle, an elongated gun barrel, a propelling member, a recuperating unit, a connecting rod, and a manually operable pull unit. The gun handle has an elongated mounting seat, and a handgrip portion extending downwardly from the mounting seat. The mounting seat is provided with a trigger and a latch member that is operably associated with the trigger and that projects upwardly from the mounting seat. The gun barrel is mounted on the mounting seat, and is formed with a longitudinally extending propelling chamber which has a front chamber portion with an open front end and a rear chamber portion with a rear end that is provided with a rear cap, a longitudinally extending recuperator chamber parallel to the propelling chamber, and a communicating hole which intercommunicates the propelling and recuperator chambers and which extends in a longitudinal direction of the gun barrel. The front chamber portion of the propelling chamber is adapted to be loaded with a paint ball therein. The propelling member is disposed in the propelling chamber, and is movable between the front and rear chamber portions of the propelling chamber. The propelling member has a front section proximate to the front end of the propelling chamber, and an opposite rear section. The recuperating unit has a recuperator member disposed slidably in the recuperator chamber and formed with a latch groove for engaging releasably the latch member, and a first biasing spring for biasing the recuperator member to move forwardly. The connecting rod is disposed slidably in the communicating hole. The connecting rod engages the propelling member and the recuperator member such that the propelling member is movable together with the recuperator member. The pull unit is mounted on the rear chamber portion of the propelling chamber, and includes a pull rod and a second biasing spring. The pull rod has a front rod portion proximate to the rear section of the propelling member and formed with an elongated slot which extends in the longitudinal direction of the propelling chamber, a rear rod portion which extends through the rear cap and which is provided with an operating knob that is disposed outwardly of the propelling chamber, and an annular flange formed between the front and rear rod portions and extending around an axis of the rear rod portion. The connecting rod extends into the elongated slot so as to be slidable therealong. The second biasing spring is sleeved around the rear rod portion of the pull rod, and is disposed between the rear cap and the annular flange of the pull rod for biasing the pull rod to move forwardly relative to the gun barrel. The operating knob is operable to pull the pull rod rearwardly against biasing action of the second biasing spring so as to move the connecting rod with the pull rod and to enable the connecting rod to pull the propelling member rearwardly, thereby resulting in corresponding rearward movement of the recuperator member in the recuperator chamber for engaging the latch groove with the latch member. The trigger is operable to disengage the latch member from the latch groove, thereby permitting forward movement of the recuperator member and the propelling
Brinks Hofer Gilson & Lione
Holzen Stephen A
Jordan Charles T.
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