Oval gear flowmeter for small nominal diameters
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 28, 1994
Grant Date -
N/A
app pub date -
Jun 3, 1992
filing date -
Jun 7, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a small nominal diameter oval gear flowmeter having curved swivel surfaces for automatic self-alignment of the oval gears about a longitudinal shaft axis to enhance measurement accuracy and facilitate restriction-free rotational movement of the oval gears by reducing gaps in the seal surfaces to prevent contact between the oval gears and the axial measuring chamber wall. Two or more oval gears are each supported on independent shafts which in turn are supported in the measuring insert of the housing. The oval gears are supported on the shafts in such a manner that they may swivel at a small angle about the longitudinal shaft axis and that small axial displacements of the oval gears may be accommodated on the shafts. A plurality of recesses that reduce the support length to approximately the shaft diameter are located on both sides of the frontal surfaces of the oval gears, to provide for automatic alignment of the oval gears. In accordance with an alternate embodiment, curved surfaces are provided either on the shafts disposed through the longitudinal bore of one or more oval gears or on the surface of the longitudinal bore of one or more oval gears, thus allowing a small swiveling action about the longitudinal axis of one or more shafts.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully