Water sprayer

Details Water sprayer Water sprayer

2001-09-28

2002-05-07

Evans, Robin O. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Flow line or nozzle attached or carried handgrip or handle

C239S526000, C239S569000

Reexamination Certificate

active

06382529

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a water sprayer. More particularly, the present invention relates to a water sprayer which has a button device engaging with a push trigger.
Referring to
FIGS. 1
to
3
, a conventional water sprayer has a hollow handle
11
, a sprayer head
10
′ connected to the hollow handle
11
′, a button device
60
′, a push trigger
70
′, a shaft
80
′, an O-ring
90
′, a first spring S
1
′, and a second spring S
2
′. The hollow handle
11
′ has a longitudinal channel
12
′, a transverse channel
13
′ communicating with the longitudinal channel
12
′, two circular holes
17
′, a chamber
14
′, a column
15
′, and a hollow post
16
′. A rubber washer
50
′, a piston
30
′, a sieve
40
′, and an annular gasket
20
′ are inserted in the longitudinal channel
12
′ of the hollow handle
11
′. The piston
30
′ has a neck
31
′ and a head rod
32
′ inserted in the rubber washer
50
′. The button device
60
′ has a click block
61
′, a hollow pillar
62
′, and a lower hook
63
′. The push trigger
70
′ has a protruded block
73
′, an opening
71
′, and two lateral protrusions
72
′. The shaft
80
′ has a disk head
81
′ and an annular groove
82
′. The O-ring
90
′ encloses the annular groove
82
′ of the shaft
80
′. The second spring S
2
′ surrounds the shaft
80
′ and the hollow post
16
′. The shaft
80
′ is inserted through the hollow post
16
′. The column
15
′ is inserted in the hollow pillar
62
′. The first spring S
1
′ surrounds the hollow pillar
62
′. The push trigger
70
′ is inserted in the chamber
14
′ of the hollow handle
11
′. The opening
71
′ of the push trigger
70
′ receives the button device
60
′. The protruded block
73
′ blocks the disk head
81
′ of the shaft
80
′. The lateral protrusions
72
′ are inserted in the circular holes
17
′ of the hollow handle
11
′. The piston
30
′ is pressed downward by the shaft
80
′. The lower hook
63
′ hooks the push trigger
70
′ (as shown in FIG.
3
). However, the lower hook
63
′ is easily broken. Furthermore, it is cumbersome to assemble the first spring S
1
′ and the second spring S
2
′.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a water sprayer which has a button device engaging with a push trigger so that the button device and the push trigger are used for a long period of time.
Another object of the present invention is to provide a water sprayer which has a single spring for both a button device and a push trigger.
Accordingly, a water sprayer comprises a hollow handle, a sprayer head connected to the hollow handle, a button device, a push trigger, a shaft, an O-ring, and a spring. The hollow handle has a longitudinal channel, a transverse channel communicating with the longitudinal channel, two recess holes, a chamber, a hollow post, a lower stepped hole communicating with the longitudinal channel, and a bottom threaded hole communicating with the lower stepped hole. The hollow post communicates with the longitudinal channel of the hollow handle. A rubber washer, a piston, and a sieve are inserted in the lower stepped hole of the hollow handle. The annular gasket is inserted in the bottom threaded hole of the hollow handle. The piston has a neck and a head rod inserted in the rubber washer. The sieve has a plurality of meshes. The sieve is disposed on the annular gasket. The piston is disposed on the sieve. The button device has an upper click block, a pair of elastic blocks, a pair of upper pillars, a protruded block, and a rib. The push trigger has an upper opening, two upper protrusions, two upper bevels, and two upper flanges. The shaft has a disk head, an annular groove, and a tip end. The O-ring encloses the annular groove of the shaft. The shaft is inserted through the hollow post. The spring surrounds the shaft. The spring is disposed between the hollow post and the disk head of the shaft. The button device is inserted in the chamber of the hollow handle. The push trigger is inserted in the chamber of the hollow handle. The button device is disposed between the hollow handle and the push trigger. The upper opening of the push trigger receives the upper click block of the button device. The upper bevels of the push trigger block the upper pillars of the button device.


REFERENCES:
patent: 5806770 (1998-09-01), Wang
patent: 5967421 (1999-10-01), Wang
patent: 5967422 (1999-10-01), Wang
patent: 6007003 (1999-12-01), Wang
patent: 6173911 (2001-01-01), Hui-Chen
patent: 6260774 (2001-07-01), Erickson

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