Movable or removable closures – With operator for movably mounted closure – Operating lever or link and closure swing about parallel axes
Patent
1996-06-21
1999-08-17
Stodola, Daniel P.
Movable or removable closures
With operator for movably mounted closure
Operating lever or link and closure swing about parallel axes
49342, 49343, 74547, E05F 1124, G05G 100
Patent
active
059375825
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to an operator for a window especially a window of the casement type.
Window operators of a type having a linkage connected between the window sash and window frame with the linkage being actuated by a rotatable handle are known. Such operators typically can include a housing with which the handle is rotatably mounted. A gear mechanism couples a drive from the handle to the linkage. Thus rotation of the handle causes the linkage to move relative to the housing such that the linkage pivots to thereby cause a window sash coupled to the linkage to move to respective open or closed positions in the window frame.
It is known to have the handle arranged such that it can be moved into a parked or non-use position where it does not project from the housing. This ability to move the handle into a "parked" position reduces the possibility of someone or something being snagged by or entangling with the handle. It also improves the aesthetics of the operator when it is not in use.
However, with known arrangements the handle must be rotated to a prescribed position where it can be folded away into the non-use position. In addition even when folded away the handle remains coupled to the gear mechanism/linkage.
SUMMARY OF THE INVENTION
It is therefore one object of the present invention to provide a rotary window operator whereby irrespective of the angular position of the handle the handle can be moved into a non-use position and disconnected from the drive mechanism/linkage of the operator.
Broadly therefore in one aspect of the invention there is provided a rotary window operator which includes a rotatable handle drivingly coupled to a link member such that movement of the link member to effect opening and closing of a window is achieved by rotation of the handle, the handle being movable into a non-use position whereupon coupling means providing the drive coupling between the handle and the link member is disconnected, the coupling means permitting the handle to be movable into the non-use position at any angular disposition of the handle.
Known window operators also suffer from somewhat fiddley and time consuming installation requirements. This usually arises because the mounting arrangement includes a number of separate components which the installer must manipulate and support during the installation procedure.
Accordingly a further object of the present invention is to provide a rotary window operator which is straight forward and convenient to install in a window frame.
Broadly in a second aspect of the invention there is provided a rotary window operator which includes a housing from which a mounting projects said mounting being engageable through an opening in a window frame, said mounting incorporating at least one clamping element, the clamping element being located in a first position which does not hinder the insertion of the mounting through said opening but is movable to a second position whereby it can engage with part of the frame defining the opening and thereby restrict retraction of the mounting through said opening.
In the following more detailed description of the invention reference will be made to the accompanying drawings in which:
FIG. 1 is a perspective view of the rotary window operator according to one embodiment,
FIG. 2 is a plan view of the operator as shown in FIG. 1,
FIG. 3 is a detail illustration of the handle when in the operative position,
FIG. 4 is a detailed view of the handle when moved to the non-use position,
FIG. 5 is a perspective view of a drive gear wheel mounted with the link member,
FIG. 6 is a similar view to FIG. 5 showing the gear wheel fixedly attached to the link member,
FIG. 7 is a plan view of the operator showing in detail a means whereby the housing thereof can be mounted to a window frame,
FIG. 8 is an end section view taken on line A--A of FIG. 7 and showing a window frame associated with the operator,
FIG. 9 is a perspective view of the operator showing the mounting arrangement illustrated in FIGS. 7 and 8
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Cohen Curtis
Interlock Industries Limited
Stodola Daniel P.
LandOfFree
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