1. Field of the Invention
The present invention relates in general to a corner lock for a window sash and, more specifically, to an improved corner lock system incorporating a corner lock capable of receiving either a pivot terminal or a tilt latch to engage a window frame.
2. Description of the Prior Art
It is well known in the art to provide a window sash with a pair of lower pivot terminals and a pair of upper, retractable latches to allow the sash to move up and down within a window frame, while allowing the upper latches to be retracted and the sash pivoted to allow for cleaning or removal. Such prior art assemblies, however, are expensive and time consuming to produce. Such assemblies typically do not provide substantial support to the sash, and often reduce the integrity of the sash. Furthermore, prior art sash corners must be dedicated to the incorporation of either a retractable latch or a pivot terminal, adding to costs associated with unique tooling and parts associated with each type of assembly.
It is known in the art to provide corner assemblies with extensible pins. Guilemet et al. U.S. Pat. No. 5,473,853 describes a corner lock having a slide member. Such corner locks of the prior art, however, do not work with mitered corners, do not accommodate alternative extensible pins, and would not be adaptable to provide sufficient structural characteristics to window sashes. It would, therefore, be desirable to provide an improved window sash corner lock assembly which would accommodate various types of pins and which would in part improve structural characteristics to the window sash.
It would also be desirable to provide a corner lock assembly which was cost effective and efficient to assemble, which did not reduce the integrity of the sash corner, and which was adaptable to receive either a tilt latch or a pivot terminal. The difficulties encountered in the prior art discussed hereinabove are substantially eliminated by the present invention.
In an advantage provided by this invention, a corner lock is provided which is adaptable to accommodate either a wash lock or a pivoted terminal.
Advantageously, this invention provides a corner lock and tilt latch assembly which is inexpensive to produce.
Advantageously, this invention provides a corner lock and tilt latch assembly which is easy to assemble.
Advantageously, this invention provides a corner lock and tilt latch assembly which is strong.
Advantageously, this invention provides a corner lock and pivoted terminal assembly which is inexpensive to produce.
Advantageously, this invention provides a corner lock and pivoted terminal assembly which is easy to assembly.
Advantageously, this invention provides a corner lock and pivoted terminal assembly which is strong.
Advantageously, this invention provides a corner lock mechanism which reduces parts and overhead costs associated with assembling tilt latch and pivoted terminal connections in fenestration assemblies.
Advantageously, in a preferred example of this invention, a corner lock is provided having first and second longitudinally extending legs secured to one another. The legs engage interior surfaces of sash members, and at least one of the legs includes a receiver for receiving a rail pin. The rail pin includes a rail engager and means for preventing the rail pin from disengaging from the receiver in either direction. The rail pin extends from the frame and may be provided with either a tilt latch or pivot terminal tip. If the tilt latch is provided, a spring is provided around the rail pin to bias the pin outward. The tilt latch is also provided an operator to force the pin into the frame member.
The present invention will now be described, by way of example, with reference to the accompanying drawings in which:
An improved window according to the present invention is shown generally as (10) in
As shown in
As shown in
The third bracket (74) of the pin receiver (54) is provided with a circular opening (76), sized to accommodate a catch (78) and shaft (80) coupled to the body (60) of the tilt latch pin (62). As shown, the catch (78) is preferably of a frusto-conical construction, with a plurality of slits (82) to allow the portions of the catch (78) to resiliently bias away from an orientation in which the pieces touch one another. Accordingly, as the catch (78) moves through the circular opening (76) of the third bracket (74), the pieces (84) of the catch (78) are biased together, thereby decreasing the diameter of the catch (78) and allowing the catch (78) to pass through the circular opening (76) of the third bracket (74). Once the catch (78) has passed through the circular opening (76), the pieces (84) bias toward their original configuration, thereby preventing removal of the catch (78) from the circular opening (76).
Once the tilt latch pin (62) is provided through the opening (58) of the first bracket (56) and opening (70) of the second bracket (68), a coil spring (86) is fitted over the catch (78) and shaft (80) before the catch (78) is passed through the circular opening (76) of the third bracket (74). The coil spring (86) is preferably provided with a diameter larger than the shaft (80), but smaller than the width of the body (60). Accordingly, when the tilt latch pin (62) is properly inserted, the catch (78) prevents the pin (62) from becoming dislodged from the third bracket (74), and the coil spring (86) biases the body (60) of the tilt latch pin (62) away from the coil spring (86).
The tilt latch pin (62) is provided with a tilt latch (88) having a catch (90) and a tapered end (92). As shown in
Preferably, the corner bracket (34) is sealed within the sash (24). The corner bracket (34) may either be provided with the sealing material (50) or may, alternatively, be wrapped with a sealing tape, such as that known in the art. The sealing material (50) may be provided around the corner bracket (34) to seal the area between the corner bracket (34) and the interior surfaces (96) and (100) of the sash (24). Alternatively, the sealing material (50) may be injected into the sash (24) around the corner bracket (34) after the corner bracket (34) has been installed in the sash (24). The fins (48) work to retain the corner bracket (34) within the sash (24) and to hold the stile (28) and top rail (32) together, while the recesses (49) act to retain the sealing material (50) between the corner bracket (34) and sash (24).
As shown in
As shown in
As shown in
Once the second sash (24) has been provided with four corner brackets (34), two tilt latch pins (62) and two pivot terminal pins (110), the second sash (24) is tilted to place the head (128) of the pivot terminal (124) into a substantial vertical orientation, sufficient to allow the head (128) to fit within a rail (136), such as those known in the art, provided along the frame (12) of the window (10). The rail (136) is provided with overhanging lips (138) to retain the head (128) when the second sash (24) is tilted vertical. Once the head (128) has been positioned within the rail (136), the opposite pivot terminal pin (110) is also provided within a similar rail (136) provided on the opposite side of the frame (112). Once the heads (128) have been so oriented, the second sash (24) is leveled and then tilted upward. As the tapered end (92) of the tilt latch pins (62) come in contact with the frame (12), the taper causes the tilt latch pins (62) to retract into the top rail (32) against the bias of the spring (86). Once the second sash (24) has been tilted into a full, upright position, the spring (86) biases the catch (90) into the rail (136), whereafter the catch (90) prevents the tilt latch pins (62) from becoming inadvertently dislodged from the rail (136).
When it is desired to remove the second sash (24) from the frame (12), the operator (106) is actuated against the bias of the spring (86) to draw the tilt latch pins (62) into the top rail (32) sufficient to allow the catch (90) to pass by the rail (136). The second sash (24) is thereafter tilted outward to a horizontal position, whereafter the second sash (24) is tilted diagonally to dislodge the head (128) of the pivot terminal pin (110) from the rail (136) of the frame (12).
Although the invention has been described with respect to a preferred embodiment thereof, it is also to be understood that it is not to be so limited, since changes and modifications can be made therein which are within the full, intended scope of this invention as defined by the appended claims. For example, it should be noted that the corner bracket (34) may be provided with any means suitable for receiving the pins (62) and (110), and that this invention may be utilized to construct sashes, screens, doors or other frames of any dimension, construction or orientation.
Number | Name | Date | Kind |
---|---|---|---|
1238854 | Watson | Sep 1917 | A |
1241794 | Watson | Oct 1917 | A |
1722947 | Schneider | Jul 1929 | A |
4208838 | Kleine et al. | Jun 1980 | A |
4296587 | Berdan | Oct 1981 | A |
4555869 | Kenkel | Dec 1985 | A |
4581850 | Simpson | Apr 1986 | A |
4683634 | Cole | Aug 1987 | A |
5450701 | White | Sep 1995 | A |
5473853 | Guillemet et al. | Dec 1995 | A |
5609371 | Mader et al. | Mar 1997 | A |
6178696 | Liang | Jan 2001 | B1 |
6672365 | Therrien | Jan 2004 | B1 |
6845593 | Silverman | Jan 2005 | B1 |