Appeal 2007-1548
Application 10/702,346
2. Pepperling teaches affixing the sensor assembly 72 to an explosion
proof housing 90 using a press-fit between the mounting boss 78 and the
housing 90, which may, if desired, include a crimp, stab-in, or other
mechanical deformation of the housing 90 and/or the pressure port 74
(Pepperling, col. 4, ll. 18-22).
3. Pepperling’s pressure port 74 is made of a material inherently having
a first hardness.
4. Pepperling does not disclose providing a housing having a material
having a second hardness less than the first hardness; configuring the
mounting boss of the pressure port with knurls thereon, the knurls oriented
parallel to an axis of the pressure port; or pressing the mounting boss of the
pressure port into the receptacle of the housing along a direction of the axis
such that the knurls deform the receptacle of the housing to conform about
the knurls to define a semi-rigid mount.
5. Ito discloses a jointing structure of a rotor and a shaft, in which the
rotor and shaft can be firmly jointed (Ito, col. 1, ll. 12-16).
6. In Ito’s jointing structure, the rotor is made of aluminum alloy and the
shaft is made of steel (Ito, col. 2, ll. 8-9). As such, the rotor is made of a
material of a hardness less than the hardness of the shaft material.
7. Ito describes that the rotor 1 has a through-hole 2 at its center and the
shaft 3 has a series of humps 4 and valleys 5 on at least a part of a jointing
surface, the outer diameter of the hump portion 4 being larger than the inner
diameter of the through-hole 2, such that when the hump portion 4 and
4
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