Kettle and filter attachment for a kettle

Details Kettle and filter attachment for a kettle Kettle and filter attachment for a kettle

1999-05-05

2001-04-10

Alexander, Reginald L. (Department: 1761)

Foods and beverages: apparatus

Beverage

Hot beverage means

C099S323000, C099S279000, C099S275000, C210S466000, C210S467000

Reexamination Certificate

active

06213001

ABSTRACT:

FIELD OF INVENTION
This invention relates to a kettle and to a filter attachment for use with a kettle.
BACKGROUND OF THE INVENTION
It is well known that when water is boiled in a kettle, solid scale tends to form inside the kettle. It is known for a single filter to be located in the kettle spout to prevent at least the large bits of scale leaving the kettle and entering, for example, a drink being made with water which has been boiled in the kettle. Such filters can become quickly clogged and are often difficult to remove and clean.
GB Specification 2308055 describes a single filter element, screw fitted into the open end of a kettle.
SUMMARY OF THE INVENTION
GB Specification 2274792 describes a fine filter element and a coarse filter element mounted in contact with one another in the entrance end of a kettle spout.
In one aspect the present invention provides a kettle having a spout and having a relatively coarse filter located at the entrance end of its spout and a separate relatively fine filter located at the exit end of the spout for preventing relatively fine particles from leaving the spout. In one form the coarse filter is formed of sheet metal with holes having a diameter of {fraction (
1
/
2
)} to 3 mm (0.2 to 7 mm
2
area) located in the kettle body across the entrance to the spout. The fine filter is preferably formed of plastics material mesh of 250 to 350 microns (preferably 290 microns) with 30 to 40% (preferably 36%) open area, which is detachably located as a sealing push or snap fit at the open (exit) end of the kettle spout.
With such an arrangement the coarse particles are stopped by the coarse filter and fall back into the kettle and do not clog the coarse filter. The fine filter traps the fine particles but is easily removed from the kettle for washing.
In another aspect the invention provides a filter attachment for a kettle, the attachment comprising a plastics material support, the support mounting a fine mesh filter, and mounting means which is a push or snap fit on or in the kettle spout exit end for mounting the support to form a seal with the kettle spout but so that the filter is easily detachable from the kettle for cleaning.
In one form the mounting means is a push-fit over the end of the spout and the support is a snap-fit within the end of the mounting means. However, the filter could be more permanently mounted in the mounting means with the mounting means easily detachable from the spout end. The support is preferably of plastics material and prevents the metal spout end from contacting articles which could be broken, such as fine china, when pouring from the kettle.
In another aspect the invention provides a filter attachment for a kettle comprising a fine filter in a mounting and a relatively coarse filter in a mounting, and connecting means for connecting the mountings so that the filter mountings are detachably locatable in sealing engagement with kettle portions at opposite ends of the kettle spout.
In a further aspect the invention provides a filter attachment for a kettle substantially as described herein with reference to any of the accompanying drawings.
Preferably the mounting means or the support includes an inwardly and forwardly angled front end tending to return water into the kettle spout to prevent drips, or an outwardly extending, tapered and undercut lip for the same purpose.


REFERENCES:
patent: 523720 (1894-07-01), Fischer
patent: 817397 (1906-04-01), Skinner
patent: 1078459 (1913-11-01), Pitschman
patent: 1327532 (1920-01-01), Duvall
patent: 1654185 (1927-12-01), Mrozek
patent: 500635 (1930-06-01), None
patent: 673706 (1930-01-01), None
patent: 269306 (1927-04-01), None
patent: 350761 (1931-06-01), None
patent: 2 274 792 (1994-08-01), None
patent: 2 308 055 (1997-06-01), None

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