초록 ▼

A sheathed electric heater element is fixed to the wall of a cooker by displacing metal from one side of the cooker wall to form an irregular channel having projecting ribs along its two sides, then placing the sheathed heater element between the two ribs and compressing the portions of the sheathed

A sheathed electric heater element is fixed to the wall of a cooker by displacing metal from one side of the cooker wall to form an irregular channel having projecting ribs along its two sides, then placing the sheathed heater element between the two ribs and compressing the portions of the sheathed heater element between the channel base and the inner surfaces of the two ribs as the ribs are folded inwardly thereagainst.

대표청구항 ▼

A method of staking a sheather electric heater element to the wall of a cooker comprising displacing metal from one side of the cooker wall to create an irregular channel with upstanding ribs along the two sides thereof, locating the sheathed heater element between the ribs and folding the ribs inwa

A method of staking a sheather electric heater element to the wall of a cooker comprising displacing metal from one side of the cooker wall to create an irregular channel with upstanding ribs along the two sides thereof, locating the sheathed heater element between the ribs and folding the ribs inwardly against the sides of the heater element therebetween while applying counter pressure to the opposite side of the cooker wall such that the confined portions of the heater element are conformed throughout their area to the thus engaged surfaces of the channel bottom and inner surfaces of the ribs. A electric cooker having a wall of wrought metal provided with an irregular channel in one side thereof, and a sheathed electric heater element fixed in said channel, the channel having a bottom wall of shallow vee-shape in cross-section located interiorly of the cooker wall, the heater element having laterally projecting portions along the length of its two sides adjacent its base, and ribs at each side of the channel which project outwardly of the cooker wall and have inner surfaces in overlying engagement with the sides of the sheathed heater element and their laterally projecting portions, the confined sides, laterally projecting portions and basee of the sheathed heater element being compressed to the shape of the engaging surface of the ribs and channel bottom throughout the surface area thereof.