Requirements for Unity of Application - Japan Patent Office

[Example 47]
[Title of the Invention]
Ignition trigger pulse generator and magnetizer
[Claims]
1. Ignition trigger pulse generator to be deployed on the drive shaft of an internal combustion
engine comprising a pick-up coil device (13) and a permanent magnet (18), wherein the
permanent magnet (18) consists of two magnetized components placed on the drive shaft
separated and forms an area of reversed flux of magnetic induction (24, 25) across the
magnetized radius and further these components are magnetized in the opposite
directions. (See Figure 1)
2. A magnetizer (31, 32) for ring-shaped permanent magnet (18) for an ignition trigger
pulse generator for internal combustion engine comprising: a pole part (33) with
U-shaped section having first and second poles which contacts half of the periphery of
circular magnet, thereof lines up in the direction of a shaft, magnetizing coil (37) deployed
on the surface of said pole part, and, a power source to provide the polarity and a given
level of electric current selected by said coil (37). (See Figure 2)
[Excerpt from Detail Description of the Invention and Drawings]
This invention concerns the drive-shaft mounted and electric generator equipped trigger
pulse generator to provide 2- cylinder engine ignition condenser for outboard motor boats and
others. In a ring-type permanent magnet, where two parts are separated in parallel to the shaft
and opposite in the diameter, are set so that the polarity of the two parts are opposite, thereby
setting up an area of reversed flux of magnetic induction (24, 25), causing the pickup-coil to
release a sharp trigger pulse. The magnetic material for this device is magnetized as stated
earlier and deployed on the drive shaft.
In the prior art, the pulse generator assembly is mounted under the electric generator,
which required a longer drive shaft, resulting in a larger overall size and the device could not
provide a sharp trigger pulse. When being assembled, the parts were likely to be pulled onto
the magnets, reducing the work efficiency
DC source
DC source
Ignition mechanism
Figure 1 Figure 2 Figure 3
Ignition mechanism
[Explanation]
The related invention (Claim 2), the magnetizer, is magnetized after the specified
invention (Claim 1), pulse generator, has been assembled. Therefore, both inventions have the
relationship between the product and equipment for manufacturing the product.
[Concerned Section]
Patent Law Section 37(iii)
86