Rotary expansible chamber devices – Moving cylinder – Rotating
Reexamination Certificate
2006-05-30
2006-05-30
Trieu, Theresa (Department: 3748)
Rotary expansible chamber devices
Moving cylinder
Rotating
C418S109000
Reexamination Certificate
active
07052257
ABSTRACT:
The invention relates to an internal gear pump for delivering fuel in an internal combustion engine, with an internally toothed annular gear and an externally toothed pinion that cooperates with the annular gear to produce a pumping action. In order to increase both the delivery capacity at starting speed and the service life of the internal gear pump, the pinion is supported on a supporting stub in a radially mobile fashion, eccentric to the annular gear. In addition, a device is provided to compensate for the radial play between the pinion and the annular gear. The drive is transmitted by a spring-loaded Oldham coupling, which adjusts the axial play of the pump according to the invention.
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Greigg Ronald E.
Robert & Bosch GmbH
Trieu Theresa
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