Pumps – Condition responsive control of drive transmission or pump... – Disconnectable drive element
Patent
1998-02-06
1999-12-21
Jeffery, John A.
Pumps
Condition responsive control of drive transmission or pump...
Disconnectable drive element
123450, 123449, F04B 4900, F02M 4100
Patent
active
060041064
ABSTRACT:
In a distributor type fuel injection pump and a power transmission pump for transmitting power to the fuel injection pump, when a rotation system member of the injection pump is seized if anything should happen, only an injection pump is damaged to thereby greatly reduce damage to an engine. To this end, an annular groove is provided in a rotor to which power from the engine is transmitted, and the annular groove constitutes a frail portion of the rotor. The annular groove is positioned along the rotor so that all or most of the sliding portions of the rotor are located on a side of the groove opposite to a power supply side. When seizure occurs in the sliding portions of the rotor to prevent rotation, the rotor is twisted off at the annular groove by the power from the engine, so that rotation of a power supply side portion of the rotor is not prevented.
REFERENCES:
patent: 5085195 (1992-02-01), Yoshizu
patent: 5513965 (1996-05-01), Nakamura et al.
patent: 5619971 (1997-04-01), Kubo et al.
patent: 5641274 (1997-06-01), Kubo et al.
patent: 5806493 (1998-09-01), Kubo et al.
Kitamura Satoshi
Machida Hajime
Matsubara Jun
Jeffery John A.
Patel Vinod D
Zexel Corporation
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