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US 6,604,924 B2Granted
Positive-displacement pump
AssigneesJoma-Hydromechanic GmbH, Bayerische Motorenwerke Aktiengesellschaft
InventorsWilli Schneider, Peter Jeschonnek, Reiner Schmid
Life of this patent
Estimating the term…
Abstract
A positive-displacement pump including a rotating vane disposed within a pump housing. The rotating vane is driven by a rotating drive shaft and the rotating vane is radially displaceable relative to the drive shaft wherein the ends of the rotating vane carry sealing strips that adjoin an inner wall of the pump housing. At least one energy storage device is included for engaging the vane and holding the sealing strips in sealing contact with the housing.
Claims7
Positive-displacement pump, comprising:
- a vane for mutually separating two chambers in a housing interior wherein the vane is driven by a drive shaft that is arranged in the pump housing and guided such that it can be radially displaced relative to the drive shaft in a plane that contains the drive shaft axis, wherein the respective ends of the vane carry sealing strips that adjoin the inner circumferential wall of the housing interior in a sealing fashion and can be radially moved relative to the axis of the drive shaft independently of one another,
- at least one energy storing device engaging the vane, wherein said energy storing device constantly holds both sealing strips in sealing contact with the inner circumferential wall of the housing interior, wherein the vane includes two vane elements each of which include symmetrically stepped end faces, wherein each end face engages the other end face in a half-lap fashion, and wherein the end faces are respectively supported on one limb of a Z-shaped spring that is inserted between the end faces.
Dependencies are inferred from the claim text.