Patent · US Active

Involute gear teeth for fluid metering device

US8312785B2 · kind B2 · utility

6Cited by

15References

14Claims

0Family size

Assignee

Graco Minnesota Inc. · US

Inventors

David L. Breeser · Ramsey, US
Mark L. Bauck · Coon Rapids, US
John C. Holman · Ham Lake, US

Key dates

Filing date	Jun 20, 2008
Grant date	Nov 20, 2012
Priority date	—
Expiry date	Sep 9, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19949
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An oval gear set for use in a flow meter comprises first and second gears that are identical to each other and that are configured to engage at a fixed center-to-center distance such that the first and second gears mesh at all angular positions. Each gear of the oval gear set comprises a hub and a plurality of gear teeth. The hub comprises an oval body having a major axis and a minor axis extending through a center of the hub, and a root profile wall circumscribing the major and minor axes. The plurality of gear teeth extend from the root profile wall. Each of the gear teeth has a pair of contact surfaces with circular involute curve profiles.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.