US2023263337A1PendingUtilityA1
Electric heater and cooking appliance having same
Est. expiryAug 21, 2038(~12.1 yrs left)· nominal 20-yr term from priority
A47J 36/2483H05B 3/03H05B 3/74F24C 7/046H05B 3/748H05B 3/68H05B 2203/013H05B 3/18H05B 3/283F24C 7/067F24C 15/102H05B 2203/003H05B 2203/005
75
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Claims
Abstract
An electric heater includes a substrate; and a plane heating element disposed on one surface of the substrate, in which the plane heating element includes a pattern portion including a start point and an end point; and an electrode portion connected to the start point and the end point of the pattern portion, and a thickness of the electrode portion is thicker than a thickness of the pattern portion.
Claims
exact text as granted — not AI-modified1 .- 20 . (canceled)
21 . An electric heater comprising:
a substrate; and a plane heating element disposed on one surface of the substrate, wherein the plane heating element includes: a pattern portion including a start point and an end point, wherein the pattern portion includes: a plurality of tracks having an arc shape, which are spaced apart from each other and are formed to have a length increasing from an innermost side to an outermost side of the pattern portion, and a plurality of bridges connecting the plurality of tracks in series, wherein a thickness of a bridge of the plurality of bridges is thicker than a thickness of a track of the plurality of tracks.Join the waitlist — get patent alerts
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