Casement window operator with adjustable bushing
AssigneeRoto Frank of America, Inc.
InventorsSteven Anthony Gledhill, Tobias Peter Dallas
Life of this patent
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Abstract
A housing assembly which can accommodate either one of a split arm drive mechanism and a dual arm drive mechanism for a casement window. The housing assembly includes an escutcheon and a base as well as an adjustable bushing that is adjustable to at least two positions, one for the split arm drive mechanism and the other for the dual arm drive mechanism. A worm drive assembly is contained within the housing assembly for driving the drive mechanism. A handle is snap fitted into the worm drive assembly for rotating the worm drive assembly and moving the casement window. A spacer is mounted to the base to enable the base to fit a wide variety of window configurations.
Claims19
A casement window operator comprising:
- a base connected to an escutcheon, the base and escutcheon forming a housing for accommodating a drive gear,
- the base comprising an elongated recess,
- a bushing comprising an elongated flange having a first end and a second end, the flange being connected to a shaft that extends upward from the flange, the shaft being connected to the flange at an eccentric position that is closer to the first end of the flange than the second end of the flange,
- the flange of the bushing being removably and mateably accommodated in the elongated recess of the base,
- the drive gear being mounted onto the shaft wherein the bushing is adapted to be removed from the elongated recess, rotated and reinserted into the elongated recess to relocate the shaft and drive gear with respect to the base.
A casement window operator comprising:
- a base connected to and disposed beneath an escutcheon, the base and escutcheon forming a housing for accommodating a worm drive assembly,
- the base comprising an angled recess and an angled support,
- the worm drive assembly comprising a worm gear, a lower thrust bushing, a drive coupling member and a retainer bushing,
- the worm gear comprising two ends, one of said ends of the worm gear being connected to the lower thrust bushing, the lower thrust bushing being received in the angled recess of the base, the other one of said ends of the worm gear being operatively connected to the drive coupling member for being rotatably driven by said drive coupling member, the drive coupling member being connected to the retainer bushing the retainer bushing engaging the support of the base,
- the escutcheon comprises an underside and the retainer bushing comprises a top end that engages the underside of the escutcheon,
- a handle, the handle comprising a drive shaft fixedly connected thereto, the handle comprising an end,
- the escutcheon further comprising a hole for receiving the drive shaft of the handle, the hole being aligned with the worm drive assembly, the drive shaft of the handle being removably received in the top end of the retainer bushing.
Dependencies are inferred from the claim text.