FLUID PUMP ASSEMBLY
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United States of America Patent
Stats
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N/A
Issued Date -
May 27, 2010
app pub date -
Nov 10, 2009
filing date -
Nov 24, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A fluid pump assembly comprising a driven cam and a reciprocating member reciprocal within a bore provided in a pump housing as the cam is driven, in use, to cause pressurisation of fluid within a pump chamber. The pump assembly further comprises an interface between the cam and the reciprocating member, for example in the form of bevelled surfaces of the cam and the reciprocating member, which serve to drive the reciprocating member (i) to translate in a first, axial direction within the bore and (ii) to rotate within the bore in a second, rotational direction. An optional feature of the fluid pump assembly is that the pump housing defines a bearing for the cam which is provided with a recess to define a region of weakness to allow the bearing to deflect, in use, thereby to provide an increased lubrication volume between the cam and the bearing. The reciprocating member may take the form of a tappet which cooperates with a pumping plunger to pressurise fluid within the pump chamber.
First Claim
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Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- F04B Class
- 4.52 % this patent is cited more than
- 15 Age