Air faucet

Details Air faucet Air faucet

2001-10-30

2003-09-23

Rivell, John (Department: 3753)

Fluid handling

Inflatable article

Stem attached relief valve

C137S223000, C251S083000, C005S706000

Reexamination Certificate

active

06622749

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to an improved air faucet and particularly an air faucet that allows air mattress to release air during deflating and folding without sucking air and inflating.
2. Description of the Prior Art
A conventional inflation air faucet
10
as shown in
FIG. 1
mainly includes an air duct
12
coupling with an opening
111
of a base seat
11
which is bonded to an inflatable air mattress
14
. The air duct
12
has external screw threads
121
formed in a middle section to engage with internal screw threads
131
of a valve cap
13
. The valve cap
13
has a top end with a plurality of air apertures
132
formed thereon and a plug
133
extended downwards, and a conical bottom end. The valve cap
13
may be engaged with the air duct
12
in various degrees through screwing to allow the air duct
12
open or close to inflate or deflate the air mattress. However, when in use, a number of situations often incurred as will be discussed below.
During deflating and folding the air mattress, the valve cap
13
of the air faucet
10
is turned loose to move the plug
133
away from the air duct
12
, the air apertures
132
of the valve cap
13
communicate with the air duct
12
. When the air mattress
14
is squeezed, air in the air mattress will be discharged through the air duct
12
and air apertures
132
. However during deflating process, users have to depress the folded portion of the air mattress with hands or feet, otherwise external air will enter through the opening air faucet
10
to inflate the air mattress
14
again. It is a cumbersome operation, especially to novices or casual users.
SUMMARY OF THE INVENTION
In view of aforesaid disadvantages, it is a primary object of the invention to provide an improved air faucet that allows a deflating and folding air mattress to discharge air without suction. The invention mainly includes a control valve in the valve cap. Through adjusting the fastening relationship between the valve cap and air duct, the control valve can control the open or close conditions between air apertures of the valve cap and an air inlet of the air duct thereby to allow the air mattress inflated or deflated as desired, and the air mattress may be deflated and folded effectively and conveniently.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.


REFERENCES:
patent: 66706 (1867-07-01), Hamilton
patent: 210766 (1878-12-01), Duffy
patent: 291818 (1884-01-01), Tudor
patent: 372503 (1887-11-01), Wheeler
patent: 447211 (1891-02-01), Thomson
patent: 526176 (1894-09-01), Blair
patent: 600360 (1898-03-01), Crane
patent: 923808 (1909-06-01), Breth et al.
patent: 1146723 (1915-07-01), Losh
patent: 1679898 (1928-08-01), Gilbert
patent: 2987071 (1961-06-01), Haus
patent: 5267363 (1993-12-01), Chaffee
patent: 5367726 (1994-11-01), Chaffee
patent: 5735504 (1998-04-01), Walters
patent: 5941272 (1999-08-01), Feldman

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