Claims
- 1. An electrical hotplate for use in a cooking applicance having:
- a hotplate member with a downwardly projecting pin with an internal thread,
- electrical heating resistor means secured to the underside of said hotplate member,
- a covering sheet covering the underside of the hotplate member,
- screw means to secure both the covering sheet to the hotplate and the hotplate to the cooking appliance, the screw means comprising:
- a hollow screw having an internal and an external thread and an outwardly projecting shoulder,
- the external thread being screwed into said pin and securing the covering sheet between the shoulder and the pin and
- a fastening screw for mounting the cooking hotplate at the cooking appliance, which fastening screw can be screwed into the internal thread.
- 2. An electric hotplate according to claim 1, wherein the screw means consists of a sheet metal sleeve, the shoulder being flanged thereto and the sleeve being provided with a pressed thread.
- 3. An electric hotplate according to claim 1, wherein the shoulder has a grooved portion to engage a correspondingly shaped portion on the covering sheet.
- 4. An electric hotplate according to claim 1, wherein the shoulder has a grooved portion to engage a correspondingly shaped portion on a member interposed between the covering sheet and the shoulder.
- 5. An electric hotplate according to claim 1, wherein an interposed member consisting of sheet metal is clamped between the shoulder of the screw and the covering sheet and has at least one projection projecting outwards from the central region of the hotplate.
- 6. An electric hotplate according to claim 5, wherein the projection has a terminal for an electrical earth connection.
- 7. An electric hotplate according to claim 4, wherein the interposed member comprises a projection shaped to be bent away from the covering sheet in order to engage fixing means on the cooking appliance to prevent the electric hotplate from rotating.
- 8. An electric hotplate according to claim 6, wherein the interposed member is clamped nonrotatably to the electric hotplate by means of tabs bent out of the plane of the interposed member and penetrating in recesses of the covering sheet.
- 9. An electric hotplate according to claim 1, wherein the hollow screw and the fastening screw comprise screw heads provided with key faces.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2933296 |
Aug 1979 |
DEX |
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CROSS-REFERENCE
This application is a continuation of copending application Ser. No. 177,873 filed Aug. 14, 1980, now U.S. Pat. No. 4,348,581.
US Referenced Citations (11)
Foreign Referenced Citations (5)
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Date |
Country |
99599 |
Apr 1960 |
DKX |
76480 |
May 1918 |
DE2 |
153865 |
Jul 1938 |
DE2 |
68454 |
Jun 1914 |
CHX |
365848 |
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CHX |
Continuations (1)
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Number |
Date |
Country |
Parent |
177873 |
Aug 1980 |
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