U.S. patent application number 11/987593 was filed with the patent office on 2008-04-10 for handheld wet grinder.
This patent application is currently assigned to GISON MACHINERY CO., LTD.. Invention is credited to Freddy Lin.
Application Number | 20080085667 11/987593 |
Document ID | / |
Family ID | 39275311 |
Filed Date | 2008-04-10 |
United States Patent
Application |
20080085667 |
Kind Code |
A1 |
Lin; Freddy |
April 10, 2008 |
Handheld wet grinder
Abstract
A handheld wet grinder designed with water-discharging mechanism
for wetting the powders. The wet grinder includes a main body and a
water-discharging switch. A water incoming flow way is disposed in
the main body and extends from the rear end of the main body to the
front end thereof. A valve is installed in the flow way. The
water-discharging switch is mounted on a circumference of the front
end of the main body and connected with the valve. When shifting
the water-discharging switch, the valve is driven to block or
unblock the water incoming flow way so as to control water flow.
The water incoming flow way is directly disposed in the main body
without being exposed to outer side so that the flow way of water
is protected from being damaged. In addition, the water-discharging
switch is positioned at the front end of the main body so that a
user can conveniently operate the water-discharging switch with the
hand holding the main body without using the other hand.
Inventors: |
Lin; Freddy; (Taichung
Hsien, TW) |
Correspondence
Address: |
TROXELL LAW OFFICE PLLC
5205 LEESBURG PIKE, SUITE 1404
FALLS CHURCH
VA
22041
US
|
Assignee: |
GISON MACHINERY CO., LTD.
|
Family ID: |
39275311 |
Appl. No.: |
11/987593 |
Filed: |
December 3, 2007 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
11514362 |
Sep 1, 2006 |
7311588 |
|
|
11987593 |
Dec 3, 2007 |
|
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Current U.S.
Class: |
451/358 |
Current CPC
Class: |
B24B 23/005 20130101;
B24B 55/02 20130101 |
Class at
Publication: |
451/358 |
International
Class: |
B24B 23/00 20060101
B24B023/00 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 20, 2007 |
TW |
096143933 |
Claims
1. A handheld wet grinder comprising: a main body having a front
end and a rear end; a water incoming flow way disposed in the main
body and extending from the rear end of the main body to the front
end thereof; a valve installed in the flow way; and a
water-discharging switch mounted on a circumference of the front
end of the main body for a user to shift, the water-discharging
switch being connected with the valve, whereby when shifting the
water-discharging switch, the valve is driven to block or unblock
the water incoming flow way.
2. The grinder as claimed in claim 1, wherein the water-discharging
switch is arranged on a top face of the front end of the main
body.
3. The grinder as claimed in claim 1, wherein when the
water-discharging switch is shifted, the water-discharging switch
is moved back and forth along the length of the main body.
4. The grinder as claimed in claim 2, wherein when the
water-discharging switch is shifted, the water-discharging switch
is moved back and forth along the length of the main body.
5. The grinder as claimed in claim 1, wherein the water-discharging
switch is pivotally connected with the main body, whereby when the
water-discharging switch is shifted, the water-discharging switch
is rotated.
6. The grinder as claimed in claim 1, wherein one end of the
water-discharging switch is pivotally connected with the main body,
whereby when the other end of the water-discharging switch is
shifted, the water-discharging switch is rotated.
7. The grinder as claimed in claim 1, wherein a valve chamber is
formed at a front end of the water incoming flow way and the valve
is disposed in the valve chamber.
8. The grinder as claimed in claim 7, wherein a pivot hole is
formed on the circumference of the main body to communicate with
the valve chamber; a connector is mounted in the pivot hole, an
inner end of the connector is connected with the valve; the
water-discharging switch is connected with an outer end of the
connector.
9. The grinder as claimed in claim 1, wherein a pivot hole is
formed on the circumference of the main body to communicate with
the water incoming flow way; a connector is mounted in the pivot
hole, an inner end of the connector is connected with the valve;
the water-discharging switch is connected with an outer end of the
connector.
10. The grinder as claimed in claim 1, wherein at least one pivot
hole is formed on at least one side of the main body to communicate
with the water incoming flow way; the water-discharging switch
having a shift section and at least one lug positioned on one side
of the shift section, the lug being pivoted with the pivot hole and
connected to the valve; the shift section being positioned on the
top face of the main body, whereby when shifted, the
water-discharging switch is rotated about the pivot of the lug and
the shift section of the water-discharging switch is moved back and
forth along the length of the main body
11. The grinder as claimed in claim 10, further comprises a
connector installed in the pivot hole, an inner end of the
connector is connected with the valve; the lug of the
water-discharging switch is connected with an outer end of the
connector.
12. The grinder as claimed in claim 10, wherein the
water-discharging switch has two lugs respectively disposed on two
sides of the shift section, the two lugs respectively positioned on
two sides of the main body.
13. The grinder as claimed in claim 1, wherein a pivot hole is
formed on a top face of the main body to communicate with the water
incoming flow way; the water-discharging switch is connected with
the valve via the pivot hole, whereby when the water-discharging
switch is shifted, the water-discharging switch is rotated.
14. The grinder as claimed in claim 1, wherein the front end of the
main body has a rotary shaft; the water-discharging switch is
positioned above the rotary shaft.
15. The grinder as claimed in claim 2, wherein the front end of the
main body has a rotary shaft; the water-discharging switch is
positioned above the rotary shaft.
16. A handheld wet grinder comprising: a main body having a front
end and a rear end; a water incoming flow way disposed in the main
body and extending from the rear end of the main body to the front
end thereof; a ball valve installed in the flow way; and a
water-discharging switch pivotally mounted on a circumference of
the front end of the main body for a user to shift, the
water-discharging switch being connected with the ball valve, the
water-discharging switch having a rotational center coinciding with
the center of the ball valve, whereby when shifting the
water-discharging switch, the ball valve is driven and rotated.
17. The grinder as claimed in claim 16, wherein the front end of
the main body has a rotary shaft; the water-discharging switch is
arranged on a top face of the front end of the main body and is
positioned above the rotary shaft.
18. The grinder as claimed in claim 16, wherein when the
water-discharging switch is shifted, the water-discharging switch
is moved back and forth along the length of the main body.
19. The grinder as claimed in claim 16, wherein the
water-discharging switch is pivotally connected with the main body,
whereby when the water-discharging switch is shifted, the
water-discharging switch is rotated.
20. The grinder as claimed in claim 16, wherein at least one pivot
hole is formed on at least one side of the main body to communicate
with the water incoming flow way; the water-discharging switch
having a shift section and at least one lug positioned on one side
of the shift section, the lug being pivoted with the pivot hole and
connected to the ball valve; the shift section being positioned on
the top face of the main body, whereby when shifted, the
water-discharging switch is rotated about the pivot of the lug and
the shift section of the water-discharging switch is moved back and
forth along the length of the main body
Description
[0001] This application is a Continuation-in-Part of pending
application U.S. Ser. No. 11/514,362, entitled "WATER GRINDER" and
filed on Sep. 1, 2006.
FIELD OF THE INVENTION
[0002] The present invention is related to a grinding device, and
more particularly to a handheld grinder with wetting effect. The
water incoming flow way of the grinder is disposed in the grinder.
In addition, the water-discharging switch of the grinder is easily
operable.
BACKGROUND OF THE INVENTION
[0003] When grinding a work piece with a handheld grinder, much
powder dust is produced. The conventional grinder is designed with
a water-discharging unit for wetting the powder dust and avoiding
flight thereof.
[0004] FIG. 1 shows a conventional handheld wet grinder 10 in which
a water pipe 12 is mounted on the main body 14 for connecting with
a water source. A water-discharging switch 16 is connected to the
water pipe 12. When the switch 16 is switched on, the water will
flow into the water pipe 12 and then flow out from the rotary shaft
18 of the grinder.
[0005] In the above handheld wet grinder, the water pipe 12 is
externally added to the main body and exposed to outer side
thereof. In use, the water pipe tends to be collided and broken to
lead to leakage of the water.
[0006] Moreover, the water-discharging switch 16 is positioned at a
rear end of the main body 14 so that it is inconvenient to operate
the switch 16. That is, when controlling the water flow, a user
needs to hold the main body 14 with one hand and switch the switch
16 with the other hand. Therefore, it is necessary for the user to
use both hands to operate the grinder, unable to operate with
single hand.
SUMMARY OF THE INVENTION
[0007] It is therefore a primary object of the present invention to
provide a handheld wet grinder in which the flow way of the water
is protected from being collided and broken.
[0008] It is a further object of the present invention to provide a
handheld wet grinder having a water-discharging switch for
controlling water flow. The wet grinder enables a user to operate
the water-discharging switch with single hand.
[0009] According to the above objects, the handheld wet grinder of
the present invention has a water incoming flow way which is
directly disposed in the main body of the grinder. Therefore, the
water incoming flow way is protected from being collided and
damaged.
[0010] The grinder of the present invention has a water-discharging
switch positioned at a front end of the main body. Accordingly, a
user can conveniently operate the water-discharging switch with the
hand holding the main body. Therefore, the user can operate the
water-discharging switch with single hand.
[0011] Preferably, the water-discharging switch is positioned on a
top face of the front end of the main body of the grinder.
[0012] Preferably, the water-discharging switch is back and forth
shiftable along the length of the main body. Alternatively, the
water-discharging switch is rotatable to control the water
flow.
[0013] The present invention can be best understood through the
following description and accompanying drawings wherein:
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 is a perspective view of a conventional wet
grinder;
[0015] FIG. 2 is a perspective view of a first embodiment of the
present invention;
[0016] FIG. 3 is a longitudinal sectional view according to FIG.
2;
[0017] FIG. 4 is a sectional view taken along line 4-4 of FIG.
3;
[0018] FIG. 5 is a side view according to FIG. 2;
[0019] FIG. 6 is a side view according to FIG. 5, showing that the
water-discharging switch is switched to the shutoff position;
[0020] FIG. 7 is a perspective view of a second embodiment of the
present invention; and
[0021] FIG. 8 is a sectional view taken along line 8-8 of FIG.
7.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0022] Please refer to FIG. 2. According to a first embodiment, the
handheld wet grinder 20 of the present invention has a main body 30
and an activation switch 35 mounted on a circumference of the main
body 30 for activating the grinder. The activation switch 35 can be
a rotary switch, a trigger, a press button or the like. When the
grinder is turned on, a rotary shaft 36 is driven and rotated. The
rotary shaft 36 is mounted in the main body 30 at a front end
thereof. A bottom end of the rotary shaft extends out of the main
body for mounting a grinding tool thereon for grinding a work
piece.
[0023] The grinder of the present invention further has a water
incoming flow way 40 and a water-discharging switch 50.
[0024] Referring to FIG. 3, the water incoming flow way 40 is
disposed in the main body 30 and extends from a rear end 32 of the
main body to a front end thereof. A rear end 41 of the water
incoming flow way 40 is connected to a water source. A valve 45
which is a ball valve in this embodiment is disposed in the water
incoming flow way 40. A valve chamber 42 is formed in the front end
of the water incoming flow way 40 for installing the valve 45
therein.
[0025] The water-discharging switch 50 is mounted on a
circumference of the front end 34 of the main body 30 for
controlling the valve 45. Referring to FIG. 4, the
water-discharging switch 50 has a shift section 52 and at least one
lug 54 positioned on one side of the shift section 52. In practice,
preferably there are two lugs 54, 55 respectively disposed on two
sides of the shift section. The water-discharging switch 50 is
bridged over a top face of the front end of the main body with the
two lugs 54, 55 respectively positioned on two sides of the main
body 30. Accordingly, the shift section 52 is positioned on the top
face of the main body 30 for a user to shift. At least one lug 54
is pivotally connected with one side of the main body, whereby the
water-discharging switch 50 is rotatable about the pivot of the
lug. The water-discharging switch 50 is substantially mounted above
the rotary shaft 36.
[0026] To speak more detailedly, at lease one pivot hole 37 is
formed on one side of the main body 30 to communicate with the
valve chamber 42 of the flow way. A connector 48 is airtight
rotatably disposed in the pivot hole 37. An inner end of the
connector 48 is connected with the valve 45. The lug 54 is
connected with an outer end of the connector 48 via a threaded
member 56. Accordingly, the water-discharging switch 50 is
rotatable about the pivot hole. When shifting the water-discharging
switch 50, the valve 45 is driven to rotate. The connector 48 is
connected with the center of the ball valve 45 so that the
rotational center of the water-discharging switch 50 coincides with
the center of the ball valve 45.
[0027] Referring to FIG. 3, in this embodiment, the rotary shaft 36
has a passage 38 communicating with the water incoming flow way 40.
In addition, the front end of the main body is installed with an
external water-discharging mechanism 60 communicating with the flow
way 40. By means of operating a selection switch 62, the water is
controlled to flow out from at least one outlet 39 of the rotary
shaft or from at least one outlet 64 of the external
water-discharging mechanism 60. The position where the water flows
out is not the major subject of the present invention so that this
will not be further described hereinafter.
[0028] Referring to FIG. 5, in use, a user holds the main body 30
with one hand to operate the grinder. The water-discharging switch
50 is disposed on the top face of the front end of the main body,
therefore, it can be clearly seen from FIG. 5 that the user can
shift the shift section 52 of the water-discharging switch 50 with
one finger (such as the thumb) of the same hand to control the
water flow. When the water-discharging switch 50 is pushed forward
to the fully open position as shown in FIG. 5, the valve 45 is
positioned in a fully open position as shown in FIG. 3, where a
through hole 46 of the valve 45 fully communicates with the flow
way 40. Under such circumstance, the water flowing into the water
incoming flow way can pass through the valve 45 to flow out from
the outlet 39 or the outlet 64 to wet the powders produced in
grinding operation.
[0029] When the water-discharging switch 50 is shifted rearward to
the shutoff position as shown in FIG. 6, the valve 45 is such
driven and rotated by the switch 50 that the through hole 46 no
more communicates with the water incoming flow way 40 to block the
flow way. When the switch is shifted to a position between the
positions of FIGS. 5 and 6, the amount of the water flow can be
controlled.
[0030] FIGS. 7 and 8 show a second embodiment of the grinder 70 of
the present invention, which also includes a main body 80, a water
incoming flow way 82, a water-discharging switch 84 and a valve 86
installed in a valve chamber 83 of the flow way 82.
[0031] A pivot hole 87 is formed on a top face of the main body 80
to communicate with the valve chamber 83. The switch 84 is mounted
on the top face of the main body. A connector 88 is arranged in the
pivot hole 87 to connect one end of the switch 84 with the valve
86. The rotational center of the water-discharging switch coincides
with the center of the valve 86.
[0032] When the free end of the switch 84 is shifted, the switch 84
rotationally drives the valve 86 to control the water flow.
[0033] It should be noted that the water-discharging switch of the
invention can be alternatively arranged on the circumference of the
front end of the main body. The position of the water-discharging
switch is not limited to the top face of the front end of the main
body.
[0034] According to the above arrangement, the water-discharging
switch can be directly operated with the hand holding the main
body. Therefore, a user can operate the grinder and control the
water-discharging switch by single hand. This facilitates the use
of the grinder. Moreover, the water incoming flow way is directly
disposed in the main body so that the water incoming flow way is
protected from being collided and damaged.
[0035] The above embodiments are only used to illustrate the
present invention, not intended to limit the scope thereof. Many
modifications of the above embodiments can be made without
departing from the spirit of the present invention.
* * * * *