U.S. patent application number 13/738404 was filed with the patent office on 2014-07-10 for fluid supplying device.
This patent application is currently assigned to COSDA MANU FACTURING COMPANY. The applicant listed for this patent is COSDA MANU FACTURING COMPANY. Invention is credited to Lai-Cheng LIU.
Application Number | 20140190998 13/738404 |
Document ID | / |
Family ID | 50943953 |
Filed Date | 2014-07-10 |
United States Patent
Application |
20140190998 |
Kind Code |
A1 |
LIU; Lai-Cheng |
July 10, 2014 |
FLUID SUPPLYING DEVICE
Abstract
A fluid supplying device of the present invention includes a
reservoir, an outer tube, an inner tube disposed in the outer tube,
a pressing rod, and a positioning handle. The outer tube disposed
in the reservoir and is partially exposed outside the reservoir.
The pressing rod is slidably disposed in the inner tube. The
positioning handle is pivotably disposed to the reservoir and is
able to alternatively abut against the pressing rod to prevent the
pressing rod from moving. The reservoir forms a relief hole, and
the positioning handle forms a through hole. When the pressing rod
is restricted by the positioning handle, the relief hole is
deviated from the through hole, and vice versa. Thereby, the
present invention can prevent gas-leakage and prevent the pressing
rod from bouncing up.
Inventors: |
LIU; Lai-Cheng; (Taichung
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
COSDA MANU FACTURING COMPANY |
Taichung City |
|
TW |
|
|
Assignee: |
COSDA MANU FACTURING
COMPANY
Taichung City
TW
|
Family ID: |
50943953 |
Appl. No.: |
13/738404 |
Filed: |
January 10, 2013 |
Current U.S.
Class: |
222/402 |
Current CPC
Class: |
B05B 9/0816 20130101;
B05B 9/043 20130101; B65D 83/42 20130101; B05B 9/0805 20130101;
B05B 9/0413 20130101 |
Class at
Publication: |
222/402 |
International
Class: |
B65D 83/00 20060101
B65D083/00 |
Claims
1. A fluid supplying device, including: a reservoir, having an
opening and a gas inlet, the opening being located at a top of the
reservoir, the top of the reservoir further forming a relief hole;
a cover, disposed on the opening of the reservoir and being hollow,
a lateral side of the cover forming a fluid outlet; an outer tube,
an end of the outer tube extending into the reservoir, an opposite
end of the outer tube extending through the cover, the outer tube
communicating with the fluid outlet; an inner tube, disposed in the
outer tube, an end of the inner tube extending into the reservoir;
a pressing rod, slidably disposed in the inner tube, an end of the
pressing rod away from the reservoir extending outside the cover; a
positioning handle, an end of the positioning handle being
pivotably disposed on the top of the reservoir, the positioning
handle being able to pivot between a first position and a second
position, the positioning handle further forming a through hole;
wherein when the positioning handle is located at the first
position, an end of the positioning handle away from the reservoir
abuts against the end of the pressing rod away from the reservoir
so that the pressing rod is unable to move along the inner tube,
the through hole is positionally deviated from the relief hole so
that the relief hole does not communicate inside the reservoir and
exterior therebetween; wherein when the positioning handle is
located at the second position, the end of the positioning handle
away from the reservoir is away from the pressing rod and does not
abut against the pressing rod so that the pressing rod is able to
move up and down, the through hole positionally corresponds to the
relief hole so that the relief hole communicates with exterior via
the through hole.
2. The fluid supplying device of claim 1, wherein an annular flange
extending outward is formed at the opening of the reservoir, the
relief hole is formed on the annular flange, the positioning handle
is pivotably disposed to the annular flange, the cover is disposed
at a space enclosed by the annular flange.
3. The fluid supplying device of claim 2, wherein the positioning
handle has a first end and a second end, two parallel pivot arms
arranged spacedly are formed at the first end, the two pivot arms
are pivotably disposed to two opposite sides of the annular flange
respectively, the through hole is formed on one of the pivot arms,
a restriction groove facing the pressing rod is formed at the
second end of the positioning handle, the end of the pressing rod
away from the reservoir has a handgrip, when the positioning handle
is located at the first position, the handgrip is restricted in the
restriction groove and is unmovable, the through hole is deviated
from the relief hole and does not communicate with the relief
hole.
4. The fluid supplying device of claim 3, wherein circumferential
walls of the restriction groove extend to the two pivot arms so
that the positioning handle is substantially U-shaped.
5. The fluid supplying device of claim 1, wherein a switch is
disposed at the gas inlet to alternatively allow the gas inlet to
communicate the reservoir and exterior therebetween.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a fluid supplying
device.
[0003] 2. Description of the Prior Art
[0004] A conventional fluid supplying device has a reservoir for
receiving fluid and is driven by manually pumping up or by gas
filled into the reservoir for pushing fluid out.
[0005] Some fluid supplying devices can be operated in gas-mode or
manually alternatively. However, when operated manually, the
reservoir has to communicate with exterior to allow a pressing rod
to pumping up. Thus, the reservoir must form a relief hole or other
similar structure. On the contrary, when operated in gas-mode,
there is no necessity to slide the pressing rod, so the relief hole
is unnecessary. In addition, the relief hole may result gas-leakage
so that the fluid is difficult to be extracted out. Thus, the
relief hole should be closed in advance.
[0006] On the other hand, when operated in gas-mode, the pressing
rod may bounce up due to the input gas. The bouncing pressing rod
may be dangerous. Even if a positioning device is disposed to
position the pressing rod, the pressing rod may bounce up when a
user forgets to position it.
SUMMARY OF THE INVENTION
[0007] The main object of the present invention is to provide a
fluid supplying device which is able to be operated by gas-mode or
manually, and the fluid supplying device can block relief hole and
prevent pressing rod from bouncing up at the same time.
[0008] To achieve the above and other objects, a fluid supplying
device of the present invention includes a reservoir, a cover, an
outer tube, an inner tube, a pressing rod, and a positioning
handle.
[0009] The reservoir has an opening at o top thereof and a gas
inlet. The top of the reservoir further forms a relief hole. The
cover is disposed at the opening and is hollow. A side of the cover
forms a fluid outlet. An end of the outer tube extends into the
reservoir, and an opposite end of the outer tube extends outside
the reservoir through the cover. The outer tube communicates with
the fluid outlet. The inner tube is disposed in the outer tube, and
an end of the inner tube also extends through the cover. The
pressing rod is slidably disposed in the inner tube, and an end of
the pressing rod away from the reservoir extends outside the cover.
An end of the positioning handle is pivotably disposed to the top
of the reservoir and is able to pivot between a first position and
a second position. The positioning handle further forms a through
hole.
[0010] When the positioning handle is located at the first
position, an end of the positioning handle away from the reservoir
abuts against the end of the pressing rod away from the reservoir
so that the pressing rod is unable to move along the inner tube.
Also, the through hole is positionally deviated from the relief
hole so that the relief hole does not communicate inside the
reservoir and exterior therebetween. On the contrary, when the
positioning handle is located at the second position, the end of
the positioning handle away from the reservoir is away from the
pressing rod and does not block the pressing rod so that the
pressing rod is able to move along the inner tube. Also, the
through hole positionally corresponds to the relief hole so that
the relief hole communicates with exterior via the through
hole.
[0011] That is, when the positioning handle is located at the first
position, the reservoir does not communicate with exterior, and the
pressing rod is unmovable. Thus, when gas enters the reservoir via
the gas inlet, fluid in the reservoir is sucked out via the outer
tube and the fluid outlet. Due to the positioning handle blocking
the pressing rod, the pressing rod may not bounce up when gas
enters the reservoir. On the other hand, when the positioning
handle is located at the second position, the reservoir
communicates with exterior, and the pressing rod is not blocked by
the positioning handle so that the pressing rod is able to be slid
to suck fluid into the inner tube and then to push the fluid in the
inner tube into the outer tube. Thus, the fluid in the outer tube
can further flow out via the fluid outlet.
[0012] Thereby, the fluid supplying device of the present invention
can be operated in gas-mode or manually. Moreover, the relief hole
can be closed and the pressing rod can be blocked and be prevented
from bouncing up at the same time by a simple operation when the
fluid supplying device is operated in gas-mode. Thus, convenience
and safety are achieved.
[0013] The present invention will become more obvious from the
following description when taken in connection with the
accompanying drawings, which show, for purpose of illustrations
only, the preferred embodiment(s) in accordance with the present
invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 is a stereogram of the present invention;
[0015] FIG. 2 is a breakdown drawing of the present invention;
[0016] FIG. 2A is partial enlargement of a reservoir of the present
invention;
[0017] FIG. 3 is a stereogram of the present invention when a
positioning handle is located at a first position;
[0018] FIG. 4 is an illustration of the present invention when the
positioning handle is located at a second position;
[0019] FIG. 5 is an illustration of the present invention when the
positioning handle is located at the first position.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0020] Please refer to FIG. 1, FIG. 2 and FIG. 2A. The fluid
supplying device of the present invention includes a reservoir 10,
a cover 20, an outer tube 30, an inner tube 40, a pressing rod 50,
and a positioning handle 60.
[0021] The reservoir 10 has an opening 11 and a gas inlet 12. The
opening 11 is located at a top of the reservoir 10. A switch is
disposed at the gas inlet 12 for alternatively allow the gas inlet
12 to communicate inside the reservoir 10 and exterior
therebetween. The top of the reservoir 10 further forms relief hole
13. In the present embodiment, an annular flange 111 is formed at
the opening 11 and extends outward from the opening, and the relief
hole 13 is formed on the annular flange 111. Optionally, the
reservoir 10 has a pressure gauge 14, an automatic safety valve 15,
and a pressure-regulating valve 16. The pressure gauge 14 indicates
gas pressure inside the reservoir 10, and the automatic safety
valve 15 is able to release gas outward automatically when the gas
pressure inside the reservoir 10 exceeds a safety limit. The
pressure-regulating valve 16 is utilized for regulating gas flow
entering the reservoir 10 via the gas inlet 12.
[0022] The cover 20 is disposed at the opening 11 of the reservoir
and is hollow. A side of the cover 20 forms a fluid outlet 21. In
the present embodiment, the cover 20 is screwed to the opening 11
of the reservoir and is disposed in a space enclosed by the annular
flange 111.
[0023] An end of the outer tube 30 extends into the reservoir 10,
and an opposite end of the outer tube 30 extends outside the
reservoir 10 into the cover 20 via the opening 11. The outer tube
30 communicates with the fluid outlet 21. The inner tube 40 is
disposed in the outer tube 30, and an end of the inner tube 40 also
extends into the cover 20. Specifically, the outer tube 30 has a
one-way valve 31 allowing fluid to enter the outer tube 30 from the
reservoir 10 but not to flow back to the reservoir 10. Preferably,
the one-way valve 31 is a movable ball disposed in the outer tube
30.
[0024] The pressing rod 50 is slidably disposed in the inner tube
40. An end of the pressing rod 50 away from the reservoir 10
extends outside the cover 20. In the present embodiment, the end of
the pressing rod 50 away from the reservoir 10 has a handgrip 51,
and an end of the pressing rod 50 away from the handgrip 51 has a
piston 52 for facilitating suction.
[0025] An end of the positioning handle 60 is pivotably disposed to
the top of the reservoir 10. The positioning handle 60 is able to
pivot between a first position and a second position. The
positioning handle 60 further forms a through hole 611. In the
present embodiment, the positioning handle 60 is pivotably disposed
to the annular flange 111. Preferably, the positioning handle 60
has a first end and a second end, and two parallel pivot arms 61
arranged spacedly are formed at the first end of the positioning
handle 60. The two pivot arms 61 are pivotably disposed to two
opposite sides of the annular flange 111 respectively, and the
through hole 611 is formed on one of the pivot arms 61. A
restriction groove 62 facing the pressing rod 50 is formed at the
second end of the positioning handle 60, and circumferential walls
of the restriction groove 62 extend to the two pivot arms 61 so
that the positioning handle 60 is substantially U-shaped.
[0026] As shown in FIGS. 3 and 5, when the positioning handle 60 is
located at the first position, the second end of the positioning
handle 60 abuts against the end of the pressing rod 50 away from
the reservoir 10 so that the pressing rod 50 is unable to move
along the inner tube. At this time, the through hole 611 is
positionally deviated from the relief hole 13 so that the relief
hole 13 does not communicate inside the reservoir 10 and exterior
therebetween. More specifically, the handgrip 51 is restricted in
the restriction groove 62 and is unable to move, and the through
hole 611 does not communicate with the relief hole 13.
[0027] As shown in FIGS. 1 and 4, when the positioning handle 60 is
located at the second position, the second end of the positioning
handle 60 is away from the pressing rod 50 not to abut against the
pressing rod 50 so that the pressing rod 50 is able to move along
the inner tube. At this time, the through hole 611 positionally
corresponds to the relief hole 13 so that the relief hole 13
communicates with exterior via the through hole 611. Specifically,
the handgrip 51 leaves the restriction groove 62 so that the
pressing rod 50 is able to move up and down, and the through hole
611 communicates with the relief hole 13.
[0028] In use, to operate in gas-mode, a user needs to move the
positioning handle to the first position to restrict the pressing
rod and to block the relief hole, and then gas is filled into the
reservoir via the gas inlet to push the fluid in the reservoir to
enter the outer tube. Thus, the fluid in the outer tube can be
further leave the reservoir via the fluid outlet to be available
for injecting to other devices. On the other hand, to operate
manually, a user needs to move the positioning handle to the second
position to release the pressing rod. The fluid in the reservoir
can be sucked into the inner tube when the pressing rod is pulled
up, and the fluid in the inner tube can enter the outer tube to
further leave via the fluid outlet when the pressing rod is pressed
down.
[0029] Thereby, the fluid supplying device of the present invention
can be operated in gas-mode or manually alternatively and provides
a simple mechanism for blocking the relief hole and for preventing
the pressing rod from bouncing up at the same time. Even if a user
forgets to move the positioning handle to the first position before
filling gas into the reservoir, the pressing rod may not bounce up
because the relief hole has not been closed. Thus, convenience and
safety are both achieved.
* * * * *