Requirements for Unity of Application - Japan Patent Office

[Example 58]
[Title of the Invention]
Assembled multiple step barrel-type centrifugal pump unit and detachable transporter
[Claims]
1. Pre-assembled multiple step barrel-type centrifugal pump to be installed inside an outside
housing where the compression unit (56) is installed inside pump casing, multiple pump
phases including impellers, …inlet aperture casing (41), …side cover (57) and …end
cover of the last phase. The device which places compressive force (53, 54, 55) is directly
connected to said compression unit, and a device to input compression to the input axis
(75, 76) is installed in the pump unit. (See Figure 1)
2. In the device to install pre-assembled pump unit and to uninstall the same consisted of
…support part (101), …side parts (103, 104), …rollers (105a, 105b, 106a, 106b), a pair of
rails (110, 111) installed on the upper surface of said supports (101) and wheels to travel
on the set of rails. (See Figure 2)
[Excerpt from Detail Description of the Invention and Drawings]
The two inventions concerns installation and un-installation of multi-phased barrel-type
pump.
Conventional multi-phased pumps required disassembling of inner parts in a given order
and in re-assembly effect the same process in the reverse direction, a process that required
precise adjustments and consequently required a long time of skilled labor. The first invention
is related to assemblage of parts placed on an axis in a precise manner by using a compressor
device, thereby achieving an easy assembly and disassembly. The second invention concerns
transport kit to enhances handling of the unit.
Figure 1
Figure 2
100