Incremental speed reduction unit
AssigneeDresser Industries, Inc.
InventorRobert E. Hansen
Life of this patent
Estimating the term…
Abstract
An incremental speed reduction unit mounted between a fluid meter and a totalizer for reducing the speed at which the totalizer operates comprises a drive gear rotatably supported on a shaft and drivingly rotated by the fluid meter. A ring shaped gear integrally formed on an inside surface of the drive gear has a single set of gear teeth radially extending from the surface thereof. An idler gear rotatably supported on another shaft and drivingly rotated by the ring shaped gear has two sets of interspaced gear teeth of different lengths for incrementally causing the idler gear to rotate upon engagement of the teeth of the ring shaped gear. A driven gear connected to the first shaft is drivingly rotated by the idler gear and communicates such rotation to the totalizer.
Claims17
An incremental speed reduction unit, comprising:
- a support;
- a first gear rotatably supported on said support;
- a second gear integrally connected to an inside surface of said first gear having at least one gear tooth radially extending from the surface thereof;
- and
- a third gear rotatably supported on said support and incrementally rotated by said second gear, said third gear comprising a first set of gear teeth extending the axial length thereof and a second set of gear teeth interposed between adjoining teeth of said first set extending for only a portion of the axial length thereof.
A unit for transferring torque comprising:
- a rotating member and an output shaft;
- first gear means mounted on said shaft and comprising:
- a first set of gears in driving engagement with said member for rotating said first gear means relative to said shaft in response to rotation of said member;
- and
- a second set of gears;
- second gear means in driving engagement with said first gear means, said second gear means being constructed and arranged so that said second gear means is idle during substantially all of the rotation of said first gear means but is periodically engaged by said second set of gears to incrementally rotate said second gear means a fraction of one complete rotation;
- and
- means responsive to said incremental rotation of said second gear means for rotating said shaft at said incremental rate.
Dependencies are inferred from the claim text.