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Gutter-related

Window-operator-with-dial-interface

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Window operator with dial interface

Details

Inventors: Piltingsrud, Stephen M.;
Assignee: Truth Hardware Corporation (Owatonna, MN)
Primary Examiner: Dorner; Kenneth J.
Assistant Examiner: Redman; Jerry
Attorney, Agent or Firm: Wood, Phillips, VanSanten, Clark & Mortimer

An operator for controlling pivoting of a window sash relative to a window frame including dual arms which pivot relative to one another to move the window sash. A drive input pivotally drives a drive member which is eccentric about its pivot axis, where the drive input includes recesses spaced from the input pivot axis and engageable by a user's fingers to manual pivot the drive input. A drive ring gear is pivotable relative to the drive member and includes two axially spaced sets of gear teeth. The dual arms are secured to separate ring gears which are respectively associated with the two gear teeth sets. The drive ring gear is moved eccentrically relative to the pivot axis by the eccentric drive member whereby at least some of the teeth of the first set of drive ring gear teeth are disengaged from the teeth of its associated arm ring gear and at least some of the teeth of the second set of drive ring gear teeth are disengaged from the teeth of its associated arm ring gear. At least one of the first and second arm ring gears or the first and second sets of drive ring gear teeth have different numbers of teeth.

DETAILED DESCRIPTION In one aspect of the present invention, an operator for controlling pivoting of a window sash relative to a window frame is provided, including a linkage pivotable about an axis and connectable to a window sash for controlling movement of a sash relative to a window frame, a drive input pivotable about a first axis fixable relative to a window frame, the drive input including a recess spaced from the first axis and engageable by a user's finger to manually pivot the drive input, and means drivably connecting the drive input to the linkage, the connecting means including a reduction ratio of at least 25:1.
In another aspect of the present invention, a window operator is provided with dual arms pivotable relative to one another to move the window sash.
A drive input drives a pivotable drive member, which drive member is eccentric about its pivot axis.
A first ring gear is secured to one of the arms.
A drive ring gear is pivotable relative to the drive member and is moved eccentrically relative to the pivot axis by the eccentric drive member whereby the drive member positions the drive ring gear with at least some of the drive ring gear teeth disengaged from the first ring gear teeth.
The drive ring gear and the first ring gear have different numbers of teeth.
The other of the arms is selectively secured relative to the drive ring gear.
In a related aspect of the present invention, the other arm is secured to a second ring gear, and the drive ring gear includes an axially spaced second set of teeth, whereby the eccentric movement of the drive ring gear further positions the drive ring gear with at least some of the second set of drive ring gear teeth disengaged from the second ring gear teeth.
In yet another related aspect of the present invention, drive member has an outer surface oval about the second axis and the drive gear is flexible, whereby the oval surface flexes the drive gear to selectively engage the first and second ring gears with the first and second set of drive ring gear teeth, respectively, at substantially opposite sides

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