Water controlling stem structure of a faucet

Details Water controlling stem structure of a faucet Water controlling stem structure of a faucet

2001-06-01

2002-08-13

Fox, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

Reexamination Certificate

active

06431211

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to a faucet, and more particularly to a water controlling stem structure of the faucet.
2. Description of Related Art
As shown in
FIG. 1
, a prior art water controlling stem structure comprises a stem member
10
, a water flow control member
11
, a water admitting ring
12
, and a spring
13
, which are disposed in a faucet main body
14
. The water flow control member
11
is provided with an oval through hole, whereas the water admitting ring
12
is provided with a center through hole. When the oval through hole of the water flow control member
11
is aligned with the center through hole of the water admitting ring
12
, the water is let out of the faucet via the stem member
10
. There is often a lack of firm contact between the stem member
10
and the water flow control member
11
, thereby resulting in the problem of controlling the water flow with precision.
As shown in
FIG. 2
, another prior art water controlling stem structure comprises a housing
20
, a water resisting block
22
, a water distributing block
23
, a water admitting block
24
, and a washer
25
. The housing
20
is provided with a water discharging hole
201
and a water control stem
21
. The water distributing block
23
is provided with a water admitting hole
231
. The water admitting block
24
is provided with a water hole
241
and an eccentric pillar
242
. The water resisting block
22
, the water distributing block
23
and the water admitting block
24
are disposed in the interior of the housing
20
. The washer
25
is fitted over the eccentric pillar
242
, which is fitted into a faucet main body
14
. When the water control stem
21
is turned, the water is let out of the faucet via the eccentric pillar
242
, the water distributing block
23
, and the water discharging hole
201
of the housing
20
. The water flow cannot be precisely controlled because the water hole
241
of the water admitting block
24
is aligned with the water admitting hole
231
of the water distributing block
23
, and because the water admitting block
24
and the water distributing block
23
are in intimate contact with each other. The water admitting block
24
has the eccentric pillar
242
which contributes to the high cost of the production of the prior art water controlling stem structure.
BRIEF SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a faucet with a water controlling stem structure which is free of the deficiencies of the prior art water controlling stem structures described above.
The features and the advantages of the present invention will be readily understood upon a thoughtful deliberation of the following detailed description of the present invention with reference to the accompanying drawings.


REFERENCES:
patent: 3698418 (1972-10-01), Schmitt
patent: 3831621 (1974-08-01), Anthony et al.
patent: 4425935 (1984-01-01), Gonzalez
patent: 4751943 (1988-06-01), Chi
patent: 4915352 (1990-04-01), Hochstrasser
patent: 4924903 (1990-05-01), Orlandi
patent: 5107884 (1992-04-01), Orlandi
patent: 5732734 (1998-03-01), Buccicone
patent: 6202695 (2001-03-01), Wu
patent: 6247496 (2001-06-01), Ko

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