Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Reexamination Certificate
2000-07-03
2001-07-24
Pelham, Joseph (Department: 3742)
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
C219S388000, C099S4210HH, C126S388100
Reexamination Certificate
active
06265697
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention is related to an improvement in the structure of an oven and in particular to one which can roast food evenly.
2. Description of the Prior Art
The conventional oven (see
FIG. 1
) generally includes a housing
10
, a rack
20
, and a tray
30
, wherein the housing
10
is provided with two rails
11
at its two opposite sides each having a longitudinal groove. A heater is arranged into the housing
10
for heating the food therein. The rack
20
is designed for receiving foods and slidably inserted into the longitudinal grooves of the two rails
11
so that the rack
20
can be pulled out or pushed into the housing
10
as required. The tray
30
is disposed within the housing
10
for receiving foods and located under the rack
20
.
Since the rack
20
is kept stationary when mounted inside the housing
10
, the distances between various portions of the food on the rack
20
will be different thereby causing the food to be heated unevenly and therefore making the food bum in some parts but remain uncooked in the other parts.
Therefore, it is an object of the present invention to provide an improvement in the structure of an oven which can obviate and mitigate the above-mentioned drawbacks.
SUMMARY OF THE INVENTION
This invention is related to an improvement in the structure of an oven.
It is the primary object of the present invention to provide an improvement in the structure of an oven which can roast food evenly.
It is another object of the present invention to provide an improvement in the structure of an oven which can prevent food from burning.
It is a further object of the present invention to provide an improvement in the structure of an oven having a tray which can be folded when not in use.
According to the present invention, an oven includes a bowl-shaped body having an upper portion pivotally connected with a lid, an electric motor installed on an inner bottom of the bowl-shaped body and having a vertical output axle having upper end formed with a square head, a tray having a central portion formed with a protruded square member which has a square recess at a bottom configured to engage with the square head of the output axle of the electric motor, an annular ring-like member provided with a plurality of rollers and mounted under the tray for facilitating rotation of the tray, a skewer provided with a first gear fixedly mounted at one end thereof, and a second gear freely rotatably mounted at another end thereof a first groove having a small distance from an inner side of the first gear and sized to engage with the U-shaped slot of the L-shaped lugs, and a second groove having a small distance from an inner side of the second gear and sized to engage with the U-shaped slot of the L-shaped lug, the skewer having a round portion adapted to engage with the second gear so as to enable the second gear to rotate freely with respect to the skewer, an outermost end of the skewer being engaged with a first nut, while another outermost end of the skewer being sharpened to hold foods and formed with threads adapted to engage with a second nut for preventing the second gear from disengaging from the skewer.
The foregoing objects and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts. Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
REFERENCES:
patent: 1838545 (1931-12-01), Guffey
patent: 3309982 (1967-03-01), Surks
patent: 4286133 (1981-08-01), Einset et al.
patent: 4717802 (1988-01-01), Colato
patent: 5837980 (1998-11-01), Henning
patent: 5908576 (1999-06-01), Henning
A & J
Pelham Joseph
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