Postage meter
AssigneePitney Bowes Inc.
InventorHugh McChesney
Life of this patent
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Abstract
A postage meter has a print drum assembly which includes a print drum and a drum shaft. The drum includes selectively settable value printing elements. The drum shaft has, located in one or more grooves therein, a plurality of linearly movable racks. These racks are connected to the value printing elements in such a manner that linear movement of one rack alters the position of a corresponding value printing element. The meter also has a plurality of gears, called cross-over gears, arranged to drive corresponding racks. The cross-over gears driving the racks in the or each groove are arranged side-by-side and are independently driven by respective drive components arranged for rotation about a rotation axis common to the cross-over gears and the drive components.
Claims10
A postage meter comprising:
- a base,
- a print drum assembly which includes a print drum and a drum shaft rotatively supported by said base of said postage meter, said print drum including radially positionable value printing elements and said drum shaft having, located in a respective groove therein, a plurality of linearly movable racks connected to said value printing elements in such a manner that linear movement of one rack alters the radial position of a corresponding value printing element, a drive gear assembly contained in a gearbox housing rotatively mounted to said drum shaft such that said gearbox housing is supported by said drum shaft in a cantilevered manner at a point axially along said drum shaft and supportively mounted to said base, said drive gear assembly having:
- a plurality of gears rotatively mounted in said gearbox housing, herein called cross-over gears, arranged to independently drive corresponding racks;
- said cross-over gears driving a respective one of said racks in said respective groove;
- and,
- a drive means for each cross-over gear, each of said drive means including a motor mounted in said gearbox housing and a respective drive connecting means mounted in said gearbox housing for causing said cross-over gear to rotate in response to actuation of said respective motor in a predetermined manner, said respective motor for independently driving a respective one of said cross-over gears in said gearbox housing whereby said motors can cause simultaneous rotation of said cross-over gears about a respective rotation axis common to said cross-cover gears.
Dependencies are inferred from the claim text.