Patent Application
20220259911
Casement windows are well known in the art and include a sash connected to a frame typically with a hinge that connects a bottom rail of the sash to bottom portion of the frame such as the sill. A first side of the sash extends further outward from the structure in the fully open position than the opposing side. A lock is used to operatively secure the sash proximate the first side of the sash to a first vertical jamb.
Windows on the downwind side of a structure are subjected to negative pressure—that is, the pressure outside the structure is less than the pressure inside the structure, tending to draw the second non-locked side of the sash away from the frame against which it is sealed. During certain atmospheric events negative windows are also subjected to negative pressure.
Snubbers have been used to assist in opposing retaining the second non-locked side of the sash against the seal between the sash and the frame when the sash is exposed to negative pressure.
An apparatus includes a snubber having an engagement portion with a free end configured to be removably engaged within a groove in a frame. The engagement portion includes a first engagement member and a second member at least partially separated from the first engagement member. The second member deflecting less than the first engagement member when a negative pressure is applied to the sash.
In one embodiment a fenestration assembly includes a frame having a first jamb and a second jamb and a sash having a first stile and a second stile spaced from and parallel to the first stile. A snubber is operatively connected to the second stile. The snubber includes an engagement portion having a free end configured to be removably positioned within a cavity in the second jamb. The engagement portion includes a first engagement member and a second member, the second member deflects less than the first engagement member when a negative pressure is applied to the sash.
In one embodiment a method of securing a casement window includes providing a casement window having a first stile and a second stile spaced from and parallel to the first stile within a frame having a first jamb and a second jamb spaced from and parallel to the first jamb. A snubber is connected to the second stile, the snubber including an engagement portion having a free end configured to be removably positioned within a cavity in the second jamb. Further including removably engaging the engagement portion having a first engagement member and a second member into a cavity in the second jamb wherein the second member deflecting less than the first engagement member when a negative pressure is applied to the sash.
Referring to
As used herein the term “up” or “upper” is used to reference a general vector direction away from the force of gravity when the window is in an in-use position on a wall of the structure. The term “outward” refers to the direction away from the inside of the structure supporting the window or fenestration toward an exterior of the structure such as a building. The term “inward” refers to the direction toward the interior or inside of the structure. Casement window 104 moves in an outwardly position as the sash is moved or swings from a fully closed to a fully open position. of a building structure. Referring to
Sash 102 includes a first stile 122 and a second stile 124 spaced from and substantially parallel to first stile 122. Sash 102 further includes a first or top rail (not shown) and a bottom or second rail 128 spaced from and parallel to top rail. A glazing such as glass or plastic is provided between the first stile 122, second stile 124, top rail and second or bottom rail 128.
Referring to
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Each engagement member 140, 142 and 144 includes a first portion 140a, 142a, 144a defined by regions on the second leg 134 and slots 136 and 138. First portion 140a of first engagement member 140 extends between slot 136 and a first free end 146 of snubber 100. First portion 142a of second engagement member 142 extends intermediate first slot 136 and second slot 138. First portion 144a of third engagement member 142 extends intermediate second slot 138 and second free end 148 of snubber 100. Each engagement member includes a second portion 140b, 142b, 144b extending substantially perpendicular to first portion 140a, 142a, 144a respectively. In another embodiment second portions 140b, 142b, 144b may extend from respective first portions 140a, 142a, 144a at other non-zero angles or non-zero radius of curvature as well. Second portions 140b, 142b, 144b include an engagement surface 140c, 142c, 144c and a beveled region 140d, 142d, 144d proximate a distal free end 140e, 142e, 144e of each respective engagement member 140, 142 and 144. In one embodiment a gusset 196 extends between first portion 142a and connection portion 132. Note that in one embodiment gusset 196 does not connect first and third engagement members 140 and 144 with connection portion 132. Additionally, the width of first second engagement member 142 as defined as the distance between the first slot 136 and the second slot 138 in a direction perpendicular to a longitudinal axis of first slot 136 and second slot 138 in a plane defined by second leg 134.
Second engagement member 142 defines a hook portion 142f extending from engagement surface 142c in a general direction away from an upper surface second portion 142b. Hook portion 142f as described herein contacts catch portion 172 also referred to as a tab or tab portion.
Referring to
Snubber 100 is connected to second stile with one or more fasteners 162 securing connection portion 132 to a portion 164 of second stile 124. In one embodiment fastener 162 is a screw, however fasteners known in the art may also be used. Sash 102 is moved from a fully open position to a fully closed position via hinge 118 moved by the operator 116 as is known in the art. The free ends of engagement members 140, 142, 144 are received within a groove 166 within second jamb 110.
Referring to
In a fully open position the free ends 140e, 142e, 144e of the first, second and third engagement members 140, 142, 144 are not located within groove 166. Stated another way in the fully open position of the sash a groove opening 174 is intermediate a base 176 of the U shaped wall and the free ends 140e, 142e and 144e of the respective first, second and third engagement members 140, 142 and 144.
The movement of sash 102 by hinge 118 allow the free ends 140e, 142e, 144e of respective first, second and third engagement members 140, 142, 144 to enter groove 166 through opening 174 without contacting any portion of the U shaped wall 168. However, in the fully closed position and in the non-stressed condition engagement surfaces 140c and 144c of the first and third engagement members 140, 144 contact the catch engagement surface 178 but in the fully closed and non-stressed condition the engagement surface 142c does not contact the catch engagement surface 178.
Referring to
Referring to
As noted above second stile 126 is sealed against second jamb with a first weatherstripping 150 and a second weatherstripping 156. As sash 102 is moved to the full closed first engagement member 140 contacts catch engagement surface 178 that operatively acts to bias weatherstripping 150 toward surface 154 of jamb 110. In this manner snubber aids in creating a tight seal between stile 124 and jamb 110. The interference fit between engagement surfaces 140c and 144c with tab 172 when the sash is in the fully closed position acts to bias sash 102 toward jamb surface 154 so that weatherstripping 150 provides a tight seal between sash 102 and frame 106. This sealing function along with the function of the hook 142f and catch surface extension portion 180 provides the dual function of snubber 100. Stated another way snubber 100 includes a first engagement member 140 that biases the hinge stile 124 of sash 102 in an inwardly direction against jamb 110 to ensure a tight seal between weatherstripping 150 of sash 102 and the frame 106. The direction that engagement member 140 biases the sash toward the frame includes a vector direction generally opposite to the direction that sash 102 opens. In one embodiment first stile of sash 102 opens in an outwardly direction and snubber 100 biases the second stile of sash 102 in an inwardly direction when the sash 102 is in the fully closed position. In one embodiment the second engagement member 142 does not bias the sash 102 in an inwardly direction and only resists movement of the second stile 126 when sash 102 is subject to a negative pressure.
In embodiment a method of securing a casement window 104 includes providing a casement window 104 having a first stile 122 and a second stile 124 spaced from and parallel to the first stile 122 within a frame 106 having a first jamb 108 and a second jamb 110 spaced from and parallel to the first jamb 108. Further the method includes connecting a snubber 100 to the second stile 124, the snubber 100 including an engagement portion having a free end configured to be removably positioned within a cavity 166 in the second jamb 110. Additionally, the method includes removably engaging the engagement portion having a first engagement member 140 and a second member 142 into the cavity 166 in the second jamb 110 wherein the second engagement member 142 deflects less than the first engagement member 140 when a negative pressure is applied to the sash 102. In another aspect the method includes the first engagement member 140 contacting a portion of the second jamb 110 when the sash 102 is in a closed position and a region proximate a free end of the second member 142 contacts a tab 172 in second jamb 110 only when the sash 102 is in the closed position and in a stressed condition.
Although the present disclosure has been described with reference to example embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the defined subject matter. For example, although different example embodiments may have been described as including one or more features providing one or more benefits, it is contemplated that the described features may be interchanged with one another or alternatively be combined with one another in the described example embodiments or in other alternative embodiments. Because the technology of the present disclosure is relatively complex, not all changes in the technology are foreseeable. The present disclosure described is manifestly intended to be as broad as possible. For example, unless specifically otherwise noted, the definitions reciting a single particular element also encompass a plurality of such particular elements.
