U.S. patent application number 15/465712 was filed with the patent office on 2018-01-11 for inflation device.
The applicant listed for this patent is Louis Chuang. Invention is credited to Louis Chuang.
Application Number | 20180010592 15/465712 |
Document ID | / |
Family ID | 60676387 |
Filed Date | 2018-01-11 |
United States Patent
Application |
20180010592 |
Kind Code |
A1 |
Chuang; Louis |
January 11, 2018 |
Inflation Device
Abstract
An inflation device includes a cylinder, a piston assembly, a
cap, a base assembly, a flow channel assembly, and an inflation
assembly. The cylinder includes two compartments. The piston
assembly includes two pistons capable of synchronous sliding
movement in relation to the two compartments. The cap is mounted on
the cylinder. The base assembly is mounted at the bottom of the
cylinder. The flow channel assembly includes a flow channel
unidirectionally connected with a space formed between the base
assembly, one compartment, and one piston. The inflation assembly
includes a nozzle connected with the flow channel and attachable to
an inflatable object.
Inventors: |
Chuang; Louis; (Taichung,
TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Chuang; Louis |
Taichung |
|
TW |
|
|
Family ID: |
60676387 |
Appl. No.: |
15/465712 |
Filed: |
March 22, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04B 51/00 20130101;
F04B 39/0005 20130101; F04B 33/005 20130101; F04B 39/123 20130101;
F04B 33/00 20130101; F04B 41/06 20130101 |
International
Class: |
F04B 39/12 20060101
F04B039/12; F04B 33/00 20060101 F04B033/00; F04B 39/00 20060101
F04B039/00; F04B 51/00 20060101 F04B051/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 6, 2016 |
TW |
105121413 |
Claims
1. An inflation device comprising: a cylinder having a first end
and a second end opposite to the first end, with the cylinder
including a first compartment, a second compartment, and a
passageway connected between the first and second compartments; a
piston assembly including a first piston slidably mounted in the
first compartment, and a second piston slidably mounted in the
second compartment, with the first and second pistons able to
simultaneously slide in relation to the first and second
compartments; a cap mounted on the first end of the cylinder, with
a first space formed between the cap, the first compartment, and
the first piston, with a second space formed between the cap, the
second compartment, and the second piston; a base assembly mounted
at the second end of the cylinder, with a third space formed
between the base assembly, the first compartment, and the first
piston, with a fourth space formed between the base assembly, the
second compartment, and the second piston; a flow channel assembly
including a flow channel unidirectionally connected with the fourth
space, and a one-way valve received in the flow channel; and an
inflation assembly including a nozzle connected with the flow
channel and attachable to an inflatable object; wherein when the
first and second pistons are moved towards the first end of the
cylinder, the air flowing from the first space into the second
space via the passageway and the original air in the second space
together unidirectionally flows into the fourth space, outside air
flows into the third space; wherein when the first and second
pistons are moved towards the second end of the cylinder, the air
in the fourth space unidirectionally passes through the one-way
valve and flows into the nozzle via the flow channel, and finally
enters the inflatable object, outside air flowing into the third
space and the original air in the third space together
unidirectionally flows into the first and second spaces.
2. The inflation device as claimed in claim 1, with the first
compartment and the second compartment respectively penetrating
through the first and second ends of the cylinder, with the
passageway located at the first end of the cylinder, and with the
piston assembly including a first rod connected with the first
piston and slidably penetrating through the cap, and a second rod
connected with the second piston and slidably penetrating through
the cap.
3. The inflation device as claimed in claim 2, with the cap
including a first extended portion received in the first
compartment, and a second extended portion received in the second
compartment, and with the piston assembly including a first
abutting ring mounted around the first rod and abutting against the
first piston, and a second abutting ring mounted around the second
rod and abutting against the second piston; wherein when the first
and second pistons are moved towards the first end of the cylinder,
and the first abutting ring abuts against the first extended
portion, and the second abutting ring abuts against the second
extended portion, the first and second pistons are unable to block
the passageway.
4. The inflation device as claimed in claim 3, with the first
piston including a first annular slot formed around an outer
periphery thereof, with the second piston including a second
annular slot formed around an outer periphery thereof, with the
piston assembly including a first piston ring mounted in the first
annular slot, and a second piston ring mounted in the second
annular slot, with the first piston ring slidably abutting against
an inner wall of the first compartment, with the second piston ring
slidably abutting against an inner wall of the second compartment,
and with the first and second piston rings able to reciprocally
slide between the passageway and the base assembly.
5. The inflation device as claimed in claim 1, with the base
assembly including a plate abutting against the cylinder, with the
plate including a through-hole penetrating therethrough and
connected with the third space.
6. The inflation device as claimed in claim 2, with the piston
assembly including a handle mounted on the first and second rods
and corresponding to the first and second pistons moved in relation
to the cylinder to abut against the cap.
7. The inflation device as claimed in claim 1, with the base
assembly including a main body, with the flow channel penetrating
through the main body and including a first section, a second
section, and a third section, with the second section located and
connected between the first and third sections, with the first
section receiving the one-way valve and unidirectionally connected
with the fourth space, and with the third section connected with
the nozzle.
8. The inflation device as claimed in claim 7, with the main body
including a connection portion, a first protruded portion, and a
second protruded portion, with the first and second protruded
portions respectively located at two opposite ends of the
connection portion, with the first protruded portion received in
the second compartment, with the first section penetrating through
the first protruded portion, with the second section extended
through the connection portion, with the inflation assembly
including a hose, and a nut, with two opposite ends of the hose
respectively connected with the second protruded portion and the
nozzle, with the third section of the flow channel penetrating
through the hose and the second protruded portion, and with the nut
threadedly mounted on the second protruded portion and located at
an end of the hose opposite to the nozzle.
9. The inflation device as claimed in claim 8, with an inner edge
of the first protruded portion adjacent to the first section
forming a shoulder, and with the one-way valve including a valve
body, and an elastic member elastically abutted against the valve
body to cause the valve body elastically abutting against the
shoulder.
10. The inflation device as claimed in claim 8 further comprising:
a pressure gauge connected with the cap, with the cylinder
including a transmission passage connected with the pressure gauge,
with the flow channel including a fourth section, with the main
body including a third protruded portion connected with the
connection portion and located between the first and second
protruded portions, with the third protruded portion received in
the transmission passage, with the fourth section penetrating
through the third protruded portion and connected with the
transmission passage and the second section.
Description
BACKGROUND OF THE INVENTION
[0001] The present invention relates to an inflation device and,
particularly, to an inflation device adapted to provide a larger
air output.
[0002] Conventional pumps can only provide smaller air output, so
that they cannot inflate a tubeless tire to install onto a wheel.
Air will leak from a gap between the tubeless tire and the
wheel.
[0003] The present invention is, therefore, intended to obviate or
at least alleviate the problems encountered in the prior art.
BRIEF SUMMARY OF THE INVENTION
[0004] An inflation device includes a cylinder, a piston assembly,
a cap, a base assembly, a flow channel assembly, and an inflation
assembly.
[0005] The cylinder has a first end and a second end opposite to
the first end. The cylinder includes a first compartment, a second
compartment, and a passageway connected between the first and
second compartments. The piston assembly includes a first piston
slidably mounted in the first compartment, and a second piston
slidably mounted in the second compartment. The first and second
pistons are able to simultaneously slide in relation to the first
and second compartments. The cap is mounted on the first end of the
cylinder. A first space is formed between the cap, the first
compartment, and the first piston. A second space is formed between
the cap, the second compartment, and the second piston. The base
assembly is mounted at the second end of the cylinder. A third
space is formed between the base assembly, the first compartment,
and the first piston. A fourth space is formed between the base
assembly, the second compartment, and the second piston. The flow
channel assembly includes a flow channel unidirectionally connected
with the fourth space, and a one-way valve received in the flow
channel. The inflation assembly includes a nozzle connected with
the flow channel and attachable to an inflatable object.
[0006] The present invention will become clearer in light of the
following detailed description of illustrative embodiments of this
invention described in connection with the drawings.
DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 is a perspective view of an inflation device
according to the present invention.
[0008] FIG. 2 is a partial, exploded, perspective view of the
inflation device of FIG. 1.
[0009] FIG. 3 is a cross-sectional view of the inflation device of
FIG. 1.
[0010] FIG. 4 is a continued view of FIG. 3 and illustrates first
and second pistons sliding towards a cap.
[0011] FIG. 5 is a continued view of FIG. 4 and illustrates the
first and second pistons located at an end of a cylinder adjacent
to the cap.
[0012] FIG. 6 is a continued view of FIG. 5 and illustrates the
first and second pistons sliding towards a base assembly.
DETAILED DESCRIPTION OF THE INVENTION
[0013] FIGS. 1-6 show an inflation device according to the present
invention. The inflation device includes a cylinder 10, a piston
assembly 20, a cap 30, a base assembly 40, a flow channel assembly
50, an inflation assembly 60, and a pressure gauge 70.
[0014] Cylinder 10 has a first end 101 and a second end 102
opposite to first end 101. Cylinder 10 includes a first compartment
11, a second compartment 12, a passageway 13 located and connected
between first and second compartments 11 and 12, and a transmission
passage 14 connected with pressure gauge 70. First and second
compartments 11 and 12 respectively penetrate through first and
second ends 101 and 102 of cylinder 10. Passageway 13 is located at
first end 101 of cylinder 10. Thus, a distance between first and
second compartments 11 and 12 can be shortened to achieve a compact
appearance of cylinder 10. Transmission passage 14 is adjacent to a
side of first compartment 11 opposite to second compartment 12 and
penetrates through first and second ends 101 and 102 of cylinder
10.
[0015] Piston assembly 20 includes a first piston 21 slidably
mounted in first compartment 11, a second piston 22 slidably
mounted in second compartment 12, a first rod 23 connected with
first piston 21 and slidably penetrating through cap 30, and a
second rod 24 connected with second piston 22 and slidably
penetrating through cap 30. First and second pistons 21 and 22 are
able to simultaneously slide in relation to the first and second
compartments 11 and 12. First and second pistons 21 and 22 are
unable to block passageway 13. First piston 21 includes a first
annular slot 211 formed around an outer periphery thereof opposite
to first rod 23. Second piston 22 includes a second annular slot
221 formed around an outer periphery thereof opposite to second rod
24.
[0016] Piston assembly 20 further includes a first piston ring 25
mounted in first annular slot 211, a second piston ring 26 mounted
in second annular slot 221, a first abutting ring 27 mounted around
first rod 23 and abutting against first piston 21, a second
abutting ring 28 mounted around second rod 24 and abutting against
second piston 22, and a handle 29 mounted on first and second rods
23 and 24 and corresponding to first and second pistons 21 and 22
moved in relation to cylinder 10 to abut against cap 30. First
piston ring 25 slidably abuts against an inner wall of first
compartment 11. Second piston ring 26 slidably abuts against an
inner wall of second compartment 12. First and second piston rings
25 and 26 are able to reciprocally slide between passageway 13 and
base assembly (40). First and second abutting rings 27 and 28 are
able to abut against cap 30.
[0017] Cap 30 is mounted on first end 101 of cylinder 10. Cap 30
includes a first extended portion 31 received in first compartment
11, and a second extended portion 32 received in second compartment
12. First abutting ring 27 is able to abut against first extended
portion 31. Second abutting ring 28 is able to abut against second
extended portion 32. A first space A1 is formed between first
extended portion 31, first compartment 11, and first piston 21. A
second space A2 is formed between second extended portion 32,
second compartment 12, and second piston 22.
[0018] Base assembly 40 is mounted at second end 102 of cylinder
10. Base assembly 40 includes a main body 41 connected with
cylinder 10, and a plate 42 abutting against a side of cylinder 10
adjacent to first compartment 11. Plate 42 is located between
cylinder 10 and main body 41. A third space A3 is formed between
plate 42, first compartment 11, and first piston 21. Main body 41
includes a connection portion 411, a first protruded portion 412
received in second compartment 12, a second protruded portion 413,
and a third protruded portion 414 received in transmission passage
14. First and second protruded portions 412 and 413 are
respectively located at two opposite ends of connection portion
411. Third protruded portion 414 is connected with connection
portion 411 and is located between first and second protruded
portions 412 and 413. First protruded portion 412 includes a
shoulder 4121 formed around an inner edge thereof adjacent to flow
channel assembly 50. A fourth space A4 is formed between first
protruded portions 412, second compartment 12, and second piston
22. Plate 42 includes a through-hole 421 penetrating therethrough
and connected with third space A3 to cause outside air can flow
into third space A3.
[0019] Flow channel assembly 50 includes a flow channel 51
penetrating through main body 41 and unidirectionally connected
with second compartment 12, and a one-way valve 52 received in flow
channel 51. Flow channel 51 includes a first section 511, a second
section 512, a third section 513, and a fourth section 514. Second
section 512 is located and connected between first and third
sections 511 and 513. First section 511 penetrates through first
protruded portion 412, which has the inner edge adjacent to first
section 511 to form shoulder 4121. First section511 receives
one-way valve 52 and is unidirectionally connected with second
compartment 12. Second section 512 is extended through connection
portion 411. Third section 513 penetrates through second protruded
portion 413 and is connected with inflation assembly 60. Fourth
section 514 penetrates through third protruded portion 414. Fourth
section 514 is located between first and second sections 511 and
512 and is connected with transmission passage 14 and second
section 512. One-way valve 52 includes a valve body 521, and an
elastic member 522. Valve body 521 and elastic member 522 are
received in the first section 511. Two opposite ends of elastic
member 522 are respectively elastically abutted against valve body
521 and an inner edge of main body 41 adjacent to flow channel 51
to cause valve body 521 elastically abutting against shoulder 4121.
First section 511 is unidirectionally connected with fourth space
A4.
[0020] Inflation assembly 60 includes a nozzle 61, a hose 62, and a
nut 63. Two opposite ends of hose 62 are respectively connected
with second protruded portion 413 and nozzle 61. Third section 513
penetrates through hose 62 and second protruded portion 413. Nozzle
61 is connected with third section 513 and is attachable to an
inflatable object. Nut 63 is threadedly mounted on second protruded
portion 413 and is located at an end of hose 62 opposite to nozzle
61.
[0021] Pressure gauge 70 is connected with cap 30.
[0022] When first and second pistons 21 and 22 are moved towards
first end 101 of cylinder 10, the air flowing from first space A1
into second space A2 via passageway 13 and the original air in
second space A2 together unidirectionally flows into fourth space
A4. At this point, outside air flows into third space A3. First and
second pistons 21 and 22 are continually moved towards first end
101 of cylinder 10 until first abutting ring 27 abuts against first
extended portion 31, and second abutting ring 28 abuts against
second extended portion 32. At this point, first and second pistons
21 and 22 are unable to block passageway 13.
[0023] When first and second pistons 21 and 22 are moved towards
second end 102 of cylinder 10, the air in fourth space A4 pushes
valve body 521 to unidirectionally pass through one-way valve 52,
and then flows into flow channel 51 to dividedly flow into third
section 513, or into fourth section 514. The air in third section
513 flows through nozzle 61 and enters the inflatable object. The
air in fourth section 514 flows into pressure gauge 70 via
transmission passage 14. Outside air flowing into the third space
A3 via through-hole 421 and the original air in third space A3
together unidirectionally flows into first and second spaces A1 and
A2.
[0024] Thus, the inflation device can provide a larger air output
including volumes of first and second compartments 11 and 12 in a
short time to hold a tubeless tire to install onto a wheel.
[0025] Although specific embodiments have been illustrated and
described, numerous modifications and variations are still possible
without departing from the scope of the invention. The scope of the
invention is limited by the accompanying claims.
* * * * *