Abstract: A method for producing simple planetary gear devices is provided in which minimum backlash is satisfactorily realized and maintained with a fewer number of parts without creating any space-related inconveniences. A dummy carrier pin is used which is provided with a rotation support section whose axis can be moved in the radial direction and can support a planetary gear around the rotation support section such that the planetary gear can rotate. The planetary gear is assembled, then, a sun gear is selected and assembled, and the positions of the dummy carrier pin are fixed. Thereafter, the dummy carrier pin is removed, and a carrier pin to be used in actual power transmission is press-fitted into the carrier at the position determined by the dummy carrier pin.

Abstract: The present invention provides a heating apparatus that displays a high heating efficiency and a long product life. In addition, present invention provides a heating apparatus that has no limitations with respect to the materials comprising its heat insulating material, which displays an even greater product life and, moreover, can be manufactured easily at low cost.

Abstract: The present invention provides a heating apparatus that displays a high heating efficiency and a long product life. In addition, present invention provides a heating apparatus that has no limitations with respect to the materials comprising its heat insulating material, which displays an even greater product life and, moreover, can be manufactured easily at low cost.

Abstract: A displaying apparatus comprises a CRT capable of displaying picture elements of n rows by m columns and a VRAM (Video RAM). The VRAM comprises a CRT area having addresses of n rows by m columns identical to those of the CRT and a first and a second menu areas formed at both right and left sides of this CRT area. Display data of a formatted document is stored in the CRT area, being converted into a video signal to display an image of the formatted document by means of the CRT. To point a blank space of the formatted document, as cursor is further displayed on the CRT. When a menu display is required, the data of the required menu is stored in the first and the second menu areas, being converted into a video signal. A CPU decides the leading address of the VRAM to start the display so that the cursor and the menu are displayed simultaneously on the CRT screen. Thus, an erasure of the cursor from the CRT screen can be prevented even when the menu is displayed.