Safety-lock for multi-position tilt and turn window

Information

  • Patent Grant
  • 6421960
  • Patent Number
    6,421,960
  • Date Filed
    Thursday, March 16, 2000
    24 years ago
  • Date Issued
    Tuesday, July 23, 2002
    21 years ago
  • Inventors
  • Examiners
    • Strimbu; Gregory J.
    Agents
    • Hoffmann & Baron, LLP
Abstract
A safety-lock mechanism for use with a multi-position window having a stationary window frame, a sash window frame positioned within the stationary window frame and selectively pivotable out of the stationary window frame about a vertical axis and a horizontal axis, and a drive train positioned between the sash window frame and the stationary window frame, the drive train being moveable between at least a first position which enables the sash window frame to be pivoted about the horizontal axis and a second position which enables the sash window frame to be pivoted about the vertical axis. The safety-lock mechanism includes a spring-biased pin provided on the sash window frame. The pin has a proximal end, a distal end, a locked position and an unlocked position, and is normally biased into the locked position. An aperture is provided within the drive train and is configured to receive the proximal end of the pin. In the locked position, the proximal end of the pin extends into the aperture so as to prevent movement of the drive train from the first position into the second position. When the pin is placed in the unlocked position, the drive train is capable of being moved from the first position into the second position, thereby allowing the sash window frame to be pivoted about the vertical axis.
Description




BACKGROUND OF THE INVENTION




1. Field of the Invention




The present invention relates to safety-locks for multi-position windows. More particularly, the present invention relates to safety-locks for multi-position windows which prevent the window from pivoting about a vertical axis until the safety-lock is in the unlocked position.




2. Description of the Prior Art




There are many designs for security locks for multi-position windows or French windows. One lock design has a housing externally mounted on the lower horizontal portion of the moveable sash frame at the end that is distal from the vertical hinge axis and a catch externally mounted on the vertical portion of the stationary frame adjacent the housing. The housing contains a key operated bolt which slides along a horizontal axis normal to the horizontal portion of the sash frame. In the locked position, the bolt extends into an opening in the catch. In the unlocked position, the bolt is slid out of the opening within the catch.




In the locked position, the bolt in the opening prevents the sash from rotating about the vertical axis out of the stationary window frame. In order to be able to rotate the window sash about the vertical axis, the lock must be unlocked. Further, in order to be able to rotate the window sash about the horizontal axis, the lock must be placed at the sash horizontal axis. If the lock is placed in any other location along the sash frame, the lock must be unlocked in order to rotate the window sash about either the vertical axis or horizontal axis.




U.S. Pat. No. 3,911,621 describes a tilt and turn window having a drive train around three sides of the sash. The drive train is moved linearly by a three-position handle. Movement of the drive train switches the sash from a lockdown position in the window frame, to a position enabling rotation of the window frame on a vertical axis and finally, to a position enabling rotation out of the window frame on a horizontal axis.




When the handle is moved upwardly from center position the drive train is moved counterclockwise, thereby setting the window sash for rotation out of the window frame on the horizontal axis. When the handle is moved downward from the center position, the drive train moves clockwise setting the window sash for rotation out of the window frame on the vertical axis.




A key operated lock mechanism having a finger that is rotated by the key is installed just past the clockwise end of the drive train and positioned such that the finger can be turned to a position so as to interfere with the movement of the drive train, thereby preventing placement of the handle in a position which allows rotation of the window sash on the vertical axis. To allow placement of the handle into a position which allows rotation of the window sash about the vertical axis, the key must first be inserted into the lock, and then the finger must be turned to a position where it will not interfere with the movement of the drive train.




There are many drawbacks to this locking arrangement. First, a separate key is required to turn the lock from the locked position to the unlocked position. If one were to misplace the key, the lock would not be usable. Further, since the lock does not normally assume the locked position, then it can be kept in the unlocked position at all times, thereby defeating the purpose of having a lock altogether.




U.S. Pat. No. 4,074,462 describes a tilt and turn window having a drive train similar to the one described in his U.S. Pat. No. 3,911,621. A key operated lock mechanism is mounted on the frame of the sash. The lock includes a latch which extends into a longitudinal slot located in the drive train so that one end of the slot urges against the latch and prevents movement of the drive train into a position which will allow the sash to rotate out of the window frame on the vertical axis. Rotation of the latch out of the longitudinal slot with the key permits the drive train to move into position which will allow the sash to rot out of the window on the vertical axis.




The drawbacks to this locking arrangement are similar to that of U.S. Pat. No. 3,911,621. Namely, a separate key is required to turn the lock from the locked position to the unlocked position, and if one were to misplace that key, the lock would not be usable. Additionally, since the lock does not normally assume the locked position, it can be kept in the unlocked position at all times, thereby defeating the purpose of having a lock altogether.




U.S. Pat. No. 5,881,498 describes a multi-position window having a locking mechanism which allows rotation of the sash out of the window about the horizontal axis and prevents rotation of the sash about the vertical axis until the lock is in the unlocked position. The locking mechanism includes a bolt and a strike configured to receive the bolt. The locking mechanism further includes a hole in the sash frame which aligns with the bolt and the strike when the drive train is in a position which enables the sash to rotate about the vertical axis. The sash, even though in position to rotate about the vertical axis, cannot rotate about that axis until the lock is unlocked. In order to unlock the locking mechanism, a key is inserted into the hole in the sash. The key moves the bolt out of engagement with the strike, and thereby allows the window to rotate about the vertical axis. Similar to the previous locking mechanisms, a key is required to unlock the sash. If this key were misplaced, one would not be able to open the window.




OBJECTS AND SUMMARY OF THE INVENTION




One object of the present invention is to provide a safety-lock for a multi-position window which remains in the locked position so as to prevent rotation about the vertical axis while not interfering with the pivoting of the sash about the horizontal axis.




Another object of the present invention is to provide a safety-lock for a multi-position window which does not require a key for operation of the lock.




Another object of the present invention is to provide safety-lock for a multi-position window which will automatically be placed in the locked position when the sash is returned into the stationary window frame after rotation about the vertical axis.




Other objects and advantages of the present invention will be apparent from the following description of the invention.




In accordance with the present invention, a safety-lock mechanism for use with a multi-position window having a stationary window frame, a sash window frame positioned within the stationary window frame and selectively pivotable out of the stationary window frame about a vertical axis and a horizontal axis, and a drive train positioned between the sash window frame and the stationary window frame, the drive train being moveable between at least a first position which enables the sash window frame to be pivoted about the horizontal axis and a second position which enables the sash window frame to be pivoted about the vertical axis. The safety-lock mechanism includes a spring-biased pin provided on the sash window frame. The pin has a proximal end, a distal end, a locked position and an unlocked position, and is normally biased in the locked position. An aperture is provided within the drive train and is configured to receive the proximal end of the pin. In the locked position, the proximal end of the pin extends into the aperture so as to prevent movement of the drive train from the first position into the second position. When the pin is placed in the unlocked position, the drive train is capable of being moved from the first position into the second position, thereby allowing the sash window frame to be pivoted about the vertical axis.











BRIEF DESCRIPTION OF THE DRAWINGS




Further objects and features of the present invention will be better understood in light of the embodiment examples which are discussed below with the aid of a drawing wherein:





FIG. 1

is a front perspective view of the multi-position window of the present invention in the closed position;





FIG. 2

is a front perspective view of the multi-position window of the present invention in the tilt-in position;





FIG. 3

is a front perspective view of the multi-position window of the present invention in the swing-in position;





FIG. 4

is a cross-sectional view of the safety-lock of the present invention along line


4





4


of

FIG. 1

;





FIG. 5

is a cross-sectional view of the safety-lock of the present invention along line


5





5


of

FIG. 2

;





FIG. 6

is a cross-sectional view of the safety-lock of the present invention along line


6





6


of

FIG. 3

;





FIG. 7

is a front elevation view of the drive train of

FIGS. 4-6

;





FIG. 8

is a cross-sectional view of a further embodiment of the safety-lock of the present invention along line


4





4


of

FIG. 1

;





FIG. 9

is a cross-sectional view of the safety-lock of

FIG. 8

with the multi-position window is in the tilt-in position;





FIG. 10

is a cross-sectional view of the safety-lock of

FIG. 8

with the safety-lock in the unlocked position;





FIG. 11

is a front elevation view of the drive train of

FIGS. 8-10

;





FIG. 12

is a cross-sectional view of an additional embodiment of the safety-lock of the present invention;





FIG. 13

is a front perspective view of a yet another embodiment of the multi-position window of the present invention in the closed position;





FIG. 14

is a perspective detailed view of the safety-lock of the

FIG. 13

in the locked position and wherein the sash window frame and the drive train are shown in broken lines; and





FIG. 15

is a perspective detailed view of the safety-lock of the

FIG. 13

in the unlocked position and wherein the sash window frame and the drive train are shown in broken lines.











DESCRIPTION OF THE PREFERRED EMBODIMENTS




The present invention is a safety-lock which is designed to be operated in conjunction with a drive train of a multi-position window, such as a tilt and turn, or a tilt before turn window. As is typical with this style window, the drive train is mounted on the sash frame and extends around one or more edges of the sash frame. A handle is provided on the sash frame wherein rotation of handle causes linear movement of the drive train. Depending upon the position of the handle, the drive train is positioned so as to allow the sash window frame to pivot about a horizontal axis or a vertical axis.




Designs for drive trains for multi-position windows are well known in the art, and need not be described in detail in this disclosure. Drive trains for multi-position windows are described, for example, in U.S. Pat. Nos. 3,911,621, 4,074,462, 4,339,892 and 4,624,075, which are all incorporated herein by reference. It will be evident to one of skill in the art, given the following detailed description, of the modifications required to adapt the safety-lock of the present invention for use with any drive train for a multi-position window.




Referring now to the drawings,

FIGS. 1-7

show one embodiment of the multi-position window safety-lock of the present invention. As shown in

FIGS. 1-3

, the multi-position window includes a stationary window frame


1


and a sash window frame


2


positioned within the stationary window frame


1


. As with multi-position windows, the sash window frame


2


is selectively pivotable out of the stationary window frame


1


about a horizontal axis (tilt-in), as shown in

FIG. 2

, and a vertical axis (swing-in), as shown in FIG.


3


.




As shown n

FIGS. 3-6

, a drive train


3


is positioned between the sash window frame


2


and the stationary window frame


1


. The drive train


3


is selectively moveable between at least a first position which enables the sash window frame


2


to be pivoted about the horizontal axis, and a second position which enables the sash window frame


2


to be pivoted about the vertical axis.




Preferably, and as is shown in

FIGS. 1-7

, the drive train


3


is designed to be selectively moveable between three positions. Placing the drive train


3


in the first position prevents the sash window frame from being pivoted about the horizontal axis and the vertical axis, thereby placing the window in a closed position as shown in FIG.


1


. In other words, the first position “locks-down” the sash window frame


2


and prevents any and all movement out of the stationary window frame


1


. Placing the drive train


3


in the second position, as shown in

FIG. 2

, enables the sash window frame


2


to be pivoted about the horizontal axis (tilt-in). Placing the drive train


3


in the third position, as shown in

FIG. 3

, enables the sash window frame


2


to be pivoted about the vertical axis (swing-in).




In order to facilitate movement of the drive train


3


, the sash window frame


2


is provided with a handle


4


. The handle


4


is rotatably mounted on the sash window frame


2


so as to communicate with the drive train


3


such that the relative rotation of the handle


4


causes movement of the drive train


3


from one position to the next, i.e., from the first position into the second position, from the second position into the third position, from the third position into the second position, or from the second position into the first position. As described above, the mechanism used to facilitate movement of the drive train in relation to the handle are known in the art and need not be discussed in detail herein.




A safety-lock mechanism, generally referred to as


5


, is arranged on the sash window frame


2


and the drive train


3


. The safety-lock mechanism


5


includes a spring-biased pin


6


having a proximal end


10


and a distal end


11


, and an aperture


7


positioned on the drive train


3


and configured to receive the proximal end


10


of the pin


6


. The spring-biased pin


6


has a locked position, shown in

FIG. 5

, and an unlocked position, shown in FIG.


6


. The pin


6


is normally biased in the locked position wherein the proximal end


10


of the pin


6


extends into the aperture


7


. Preferably, when the lock is in the locked position, the proximal end


10


of the pin


6


is positioned within the aperture


7


so as to not interfere with the closing of the sash


2


within the window


1


. In other words, the proximal end


10


of the pin


6


does not extend through the aperture


7


, but rather is positioned within the aperture


7


. To position the pin


6


in such a manner, the pin


6


is provided with a stop


13


. The stop


13


, as shown in

FIG. 5

, is urged against the sash frame


2


by the spring


14


. The relative placement of the stop


13


along the length of the pin


6


will determine the degree to which the proximal end


10


of the pin


6


sits within the aperture


7


in the locked position.




In the locked position, the proximal end


10


of the pin


6


and the aperture


7


cooperate to prevent movement of the drive train


3


from the tilt-in position into the swing-in position. As can be seen with reference to

FIG. 5

, the outer surface


8


of the proximal end


10


of the pin


6


engages the inner surface


9


of the aperture


7


so as to prevent movement of the drive train


3


. The drive train


3


is moved from the tilt-in position into the swing-in position by placing the pin


6


in the unlocked position, as shown in FIG.


6


. In order to place the pin


6


in the unlocked position, the distal end


11


of the pin


6


is provided with a grip


12


which enables the user to retract the proximal end


10


of the pin


6


toward the sash frame


2


and out of the aperture


7


. With the proximal end


10


of the pin


6


out of the aperture


7


, the drive train


3


can be moved into the swing-in position by the relative rotation of the handle.




With the embodiment shown in

FIGS. 1-7

, the aperture


7


is provided with a ramp


15


at one end thereof. The ramp


15


enables the movement of the drive train


3


from the closed position into the tilt-in position without the need to place the safety-lock in the unlocked position. As shown in

FIGS. 4-5

, the proximal end


10


of the pin


6


rides up the ramp


15


when the drive train


3


is moved from the closed position into the tilt-in position and down the ramp


15


when the drive train


3


is moved from the tilt-in position into the closed position.

FIG. 7

shows the relative position of the proximal end


10


of the pin


6


, aperture


7


, ramp


15


and drive train


3


when the sash window frame


2


is in the closed position A, tilt-in position B and the swing-in position C.




An alternate embodiment of the safety-lock mechanism, generally referred to as


5


, is shown in

FIGS. 8-11

. Similar to the embodiment shown in

FIGS. 1-7

, the safety-lock mechanism


5


includes a spring-biased pin


6


having a proximal end


10


and a distal end


11


, and an aperture


7




a


positioned on the drive train


3


and configured to receive the proximal end


10


of the pin


6


. The spring-biased pin


6


has a locked position, shown in

FIG. 9

, and an unlocked position, shown in FIG.


10


. The pin


6


is normally biased into the locked position wherein the proximal end


10


of the pin


6


extends into the aperture


7




a


. With this embodiment, the aperture


7




a


is designed as an elongate slot having a length L sufficient to enable movement of the drive train


3


from the closed position into the tilt-in position and from the tilt-in position into the closed position without interference with the proximal end


10


of the pin


6


. This allows the sash window frame


2


to be easily placed from the closed position into the tilt-in position while at the same time preventing movement from the tilt-in position into the swing-in position until the safety-lock is placed in the unlocked position.

FIG. 11

shows the relative position of the proximal end


10


of the pin


6


, elongate slot


7




a


and drive train


3


when the sash window frame


2


is in the closed position A′, tilt-in position B′ and the swing-in position C′.




Similar to the embodiment shown in

FIGS. 1-7

, when the safety-lock


5


is in the locked position, the proximal end


10


of the pin


6


is positioned within the elongate slot


7




a


so as to not interfere with the closing of the sash


2


within the window. In other words, the proximal end


10


of the pin


6


does not extend through the elongate slot


7




a


, but rather is positioned within the elongate slot


7




a


. To position the pin


6


in such a manner, the pin


6


is provided with a stop


13


. The stop


13


, as shown in

FIGS. 8-9

, is urged against the sash frame


2


by the spring


14


. The relative placement of the stop


13


along the length of the pin


6


will determine the degree to which the proximal end


10


of the pin


6


sits within the elongate slot


7




a


in the locked position.




In the locked position, the proximal end


10


of the pin


6


and the elongate slot


7




a


cooperate to prevent movement of the drive train


3


from the tilt-in position into the swing-in position. As can be seen with reference to

FIG. 9

, the outer surface


8


of the proximal end


10


of the pin


6


engages the inner surface


9


of the elongate slot


7




a


so as to prevent movement of the drive train


3


. The drive train


3


is moved from the tilt-in position into the swing-in position by placing the pin


6


in the unlocked position, as shown in FIG.


10


. In order to place the pin


6


in the unlocked position, the distal end


11


of the pin


6


is provided with a grip


12


which enables the user to retract the proximal end


10


of the pin


6


toward the sash frame


2


and out of the elongate slot


7




a


. With the proximal end


10


of the pin


6


out of the elongate slot


7




a


, the drive train


3


can be moved into the swing-in position by the relative rotation of the handle.




In a further embodiment, as shown in

FIG. 12

, the safety-lock mechanism, generally referred to as


50


, is positioned on the window-side edge


21


of the sash frame


20


. The safety-lock mechanism


50


includes a housing


51


attached to the sash window frame


20


and an elongate bar


60


having a proximal end


100


and a distal end


110


. The elongate bar


60


is spring-biased by a spring


140


for linear movement into and out of an aperture


70


within the drive train


30


. When the safety-lock


50


is in the locked position, the proximal end


100


of the elongate bar


60


is positioned within the aperture


70


so as to not interfere with the closing of the sash window frame


20


within the window. In other words, the elongate bar


60


does not extend through the aperture


70


, but rather is positioned within the aperture


70


.




To position the elongate bar


60


in such a manner, the elongate bar


60


is provided with a stop


130


. The stop


130


, as shown in

FIG. 12

, is urged against the housing


51


by the spring


140


. The relative placement of the stop


130


along the length of the elongate bar


60


will determine the degree to which the proximal end


100


of the elongate bar


60


sits within the aperture


70


in the locked position.




As with the previously described embodiments, the proximal end


100


of the elongate bar


60


and the aperture


70


cooperate to prevent movement of the drive train


30


from the tilt-in position into the swing-in position. The drive train


30


is moved from the tilt-in position into the swing-in position by placing the elongate bar


60


in the unlocked position. In order to place the elongate bar


60


in the unlocked position, the distal end


110


of the elongate bar


60


is provided with a grip


120


which enables the user to retract the proximal end


100


of the elongate bar


60


toward the sash frame


20


and out of the aperture


70


. With the proximal end


100


out of the aperture


70


, the drive train


30


can be moved into the swing-in position by the relative rotation of the handle.




As with the embodiments shown in

FIGS. 1-11

, the aperture


70


can be provided with a ramp


150


at one end thereof (as shown in FIG.


12


), or the aperture


70


can be designed as an elongate slot having a length sufficient to enable movement of the drive train


30


from the closed position into the tilt-in position and from the tilt-in position into the closed position without interference with the proximal end


100


of the elongate bar


60


. The use of either an elongate slot or a ramp, and the function of each, has been fully described in detail with reference to

FIGS. 1-7

.




In still a further embodiment, as shown in

FIGS. 13-15

, the safety-lock mechanism, generally referred to as


500


, is positioned so as to be operable from the face


201


of the window sash frame


200


proximal to the handle


400


. The safety-lock mechanism


500


includes a first actuation-bar


501


having a proximal end


503


and a distal end


504


and a second lock-bar


502


having a proximal end


505


and a distal end


506


. The first actuation-bar


501


and the second actuation-bar


502


are pivotally attached to one another at their respective distal ends


504


,


506


such that the proximal end


503


of the first actuation-bar


501


extends through the face


201


of the sash


200


to provide a toggle for unlocking the safety-lock. In order to enable the first actuation-bar


501


to be toggled, the first actuation-bar


501


is provided with a fulcrum


510


. The fulcrum


510


is positioned along the length of the first actuation-bar


501


so as to provide a pivot point about which the first actuation-bar


501


pivots. Further, and as is readily apparent from

FIGS. 14 and 15

, the placement of the fulcrum


510


along the length of the first actuation-bar


501


will be such that the spring


540


is capable of biasing the second lock-bar


502


into the locked position. The fulcrum


510


will further be secured to the sash window frame


200


in a manner which will allow the first actuation-bar


501


to be toggled. Securing the fulcrum


510


to the sash window frame


200


can be accomplished, for example, by providing a rib


511


within the sash window frame


200


to which the fulcrum


510


is secured.




The second lock-bar


502


is spring-biased by the spring


540


for linear movement into and out of the aperture


700


within the drive train


300


in response to the toggling of the first actuation-bar


501


. Preferably, when the safety-lock is in the locked position, the proximal end


505


of the lock-bar


502


is positioned within the aperture


700


so as to not interfere with the closing of the sash


200


within the window. In other words, the proximal end


505


of the lock-bar


502


does not extend through the aperture


700


, but rather is positioned within the aperture


700


.




In the locked position, the proximal end


505


of the lock bar


502


and the aperture


700


cooperate to prevent movement of the drive train


300


from the tilt-in position into the swing-in position. As can be seen with reference to

FIG. 14

, the outer surface


800


of the proximal end


505


of the lock-bar


502


engages the inner surface


900


of the aperture


700


so as to prevent movement of the drive train


300


. The drive train


300


is moved from the tilt-in position into the swing-in position by toggling the actuation-bar


501


into the unlocked position, as shown in FIG.


15


. With the proximal end


505


of the lock-bar


502


out of the aperture


700


, the drive train


300


can be moved into the swing-in position by the relative rotation of the handle.




With the embodiment shown in

FIGS. 14 and 15

, the aperture


700


is shown having a length L′ sufficient to enable movement of the drive train


300


from the closed position into the tilt-in position and from the tilt-in position into the closed position without interference with the proximal end


505


of the lock-bar


502


. The aperture, however, can be provided with a ramp at one end thereof. The use of either an elongate slot or a ramp, and the function of each, has been fully described in detail with reference to

FIGS. 1-7

.




There are many advantages to the safety-lock of the present invention. First, the present invention does not require a key to operate the lock. The keyless operation of the present lock does not allow someone to keep the lock in the unlocked position, and thereby avoids the potential problems with children, in particular, inadvertently opening the window and creating a dangerous situation. Further, not using a key also resolves the problem of losing the key and not being able to unlock the lock to place the window in the swing-in position.




Additionally, the use of a spring-biased lock provides a degree of child resistance in that, in order to place the window in the swing-in position, the lock must be placed in the unlocked position and the drive train must be moved to the swing-in position. The use of these two separate motions to place the window in the swing-in position provides a measure of difficulty for small children.




Further, the spring-biasing of the lock into the locked position automatically locks the lock when the sash is returned from the swing-in position into the tilt-in position. Unlike other multi-position window locks, this automatic locking is accomplished without the need for a separate step of locking the lock via the turning of a key.




Thus, while the foregoing detailed description has disclosed what is presently believed to be the preferred embodiments of the invention, those skilled in the art will appreciate that other and further changes and modifications can be made without departing from the scope or spirit of the invention, and it is intended that all such other changes and modifications are included in and are within the scope of the invention as described in the appended claims.



Claims
  • 1. A multi-position window comprising:a stationary window frame; a sash window frame positioned within said stationary window frame, said sash window frame being selectively pivotable out of said stationary window frame about one of a vertical axis and a horizontal axis; a drive train positioned between said sash window frame and said stationary window frame, said drive train being moveable between a first position, a second position and a closed position, said first position enabling said sash window frame to be pivoted about said horizontal axis, said second position enabling said sash window frame to be pivoted about said vertical axis and said closed position preventing pivoting of said sash window frame out of said stationary window frame; and a safety-lock mechanism provided on said sash window frame, said safety-lock mechanism including: a spring-biased pin having a proximal end and a distal end, said pin having a locked position and an unlocked position; and an aperture within said drive train, said aperture configured to receive said proximal end of said pin; wherein said proximal end of said pin extends into said aperture when in said locked position so as to prevent movement of said drive train from said first position into said second position, and wherein said pin in said unlocked position allows said movement of said drive train from said first position into said second position; and wherein said aperture is an elongate slot, said elongate slot having a length sufficient to enable movement of said drive train between said closed position and said first position so as to allow said sash window frame to be pivoted about said horizontal axis without said pin moving into said unlocked position.
  • 2. A multi-position window as claimed in claim 1 further including a handle rotatably mounted on said sash window frame, wherein rotation of said handle causes movement of said drive train between said first position and said second position.
  • 3. A multi-position window as claimed in claim 1 wherein said proximal end of said pin is positioned within said aperture so as to not interfere with a closing of said sash window frame within said stationary window frame when said pin is in said locked position.
  • 4. A multi-position window as claimed in claim 3 wherein said pin is provided with a stop, and wherein placement of said stop on said pin determines an amount said proximal end of said pin extends into said aperture in said locked position.
  • 5. A multi-position window as claimed in claim 1 wherein said distal end of said pin is provided with a grip which enables retracting said pin out of said aperture and into said unlocked position.
  • 6. A multi-position window comprising:a stationary window frame; a sash window frame positioned within said stationary window frame, said sash window frame being selectively pivotable out of said stationary window frame about one of a vertical axis and a horizontal axis; a drive train positioned between said sash window frame and said stationary window frame, said drive train being moveable between a first position, a second position and a closed position, said first position enabling said sash window frame to be pivoted about said horizontal axis, said second position enabling said sash window frame to be pivoted about said vertical axis and said closed position preventing pivoting of said sash window frame out of said stationary window frame; and a safety-lock mechanism provided on said sash window frame, said safety-lock mechanism including: a pin having a proximal end and a distal end, said pin having a locked position and an unlocked position; and an aperture within said drive train, said aperture configured to receive said proximal end of said pin; wherein said proximal end of said pin extends into said aperture when in said locked position so as to prevent movement of said drive train from said first position into said second position, and wherein said pin in said unlocked position allows said movement of said drive train from said first position into said second position; and wherein said drive train is provided with a ramp disposed adjacent to the aperture, said ramp enabling movement of said drive train between said closed position and said first position so as to allow said sash window frame to be pivoted about said horizontal axis without said pin moving into said unlocked position.
  • 7. A multi-position window as claimed in claim 6 wherein said proximal end of said pin is positioned within said aperture so as to not interfere with a closing of said sash window frame within said stationary window frame when said pin is in said locked position.
  • 8. A multi-position window as claimed in claim 7 wherein said pin is provided with a stop, and wherein placement of said stop on said pin determines an amount said proximal end of said pin extends into said aperture in said locked position.
  • 9. A multi-position window as claimed in claim 6 wherein said distal end of said pin is provided with a grip which enables retracting said pin out of said aperture and into said unlocked position.
  • 10. A multi-position window as claimed in claim 6 further including a handle rotatably mounted on said sash window frame, wherein rotation of said handle causes movement of said drive train between said first position and said second position.
  • 11. A multi-position window comprising:a stationary window frame; a sash window frame positioned within said stationary window frame, said sash window frame being selectively pivotable out of said stationary window frame about one of a vertical axis and a horizontal axis; a drive train positioned between said sash window frame and said stationary window frame, said drive train being moveable between a first position and a second position, said first position enabling said sash window frame to be pivoted about said horizontal axis and said second position enabling said sash window frame to be pivoted about said vertical axis; and a safety-lock mechanism provided on said sash window frame, said safety-lock mechanism including: an aperture within said drive train; a first actuation-bar having a proximal end and a distal end; and a second actuation-bar having a proximal end and a distal end; said first actuation-bar and said second actuation-bar being pivotally attached to one another at their respective distal ends such that the proximal end of said first actuation-bar extends through said sash window frame to provide a toggle for unlocking the safety-lock mechanism; and said second actuation-bar being spring-biased and capable of moving into and out of said aperture in response to toggling of said first actuation-bar.
  • 12. A multi-position window as claimed in claim 11 further including a handle rotatably mounted on said sash window frame, wherein rotation of said handle causes movement of said drive train between said first position and said second position.
  • 13. A multi-position window as claimed in claim 11 wherein said proximal end of said second actuation-bar is positioned within said aperture so as to not interfere with a closing of said sash window frame within said stationary window frame.
  • 14. A multi-position window comprising:a stationary window frame; a sash window frame positioned within said stationary window frame, said sash window frame being selectively pivotable out of said stationary window frame about one of a vertical axis and a horizontal axis; a drive train positioned between said sash window frame and said stationary window frame, said drive train being moveable between a first position, a second position and a third position, said first position preventing said sash window frame from being pivoted out of said stationary window frame, said second position enabling said sash window frame to be pivoted about said horizontal axis, and said third position enabling said sash window frame to be pivoted about said vertical axis; and a locking mechanism provided on said sash window frame, said locking mechanism including: a spring-biased pin, said pin having a locked position and an unlocked position and configured to be spring-biased into said locked position; and an aperture within said drive train, said aperture configured to receive a proximal end of said pin; wherein said pin extends into said aperture when in said locked position so as to prevent movement of said drive train from said second position into said third position, and wherein said pin in said unlocked position allows said movement of said drive train from said second position into said third position and; wherein said aperture is an elongate slot, said elongate slot having a length sufficient to enable movement of said drive train between said first position and said second position so as to allow said sash window frame to be pivoted about said horizontal axis without said pin moving into said unlocked position.
  • 15. A multi-position window as claimed in claim 14 further including a handle rotatably mounted on said sash window frame, wherein rotation of said handle causes movement of said drive train between said second position and said third position.
  • 16. A multi-position window as claimed in claim 14 wherein said pin is positioned within said aperture so as to not interfere with a closing of said sash window frame within said station window frame when said pin in said locked position.
  • 17. A multi-position window as claimed in claim 16 wherein said pin is provided with a stop, and wherein placement of said stop on said pin determines an amount said pin extends into said aperture in said locked position.
  • 18. A multi-position window as claimed in claim 14 wherein said pin is provided with a grip which enables retracting said pin out of said aperture and into said unlocked position.
  • 19. A multi-position window comprising:a stationary window frame; a sash window frame positioned within said stationary window frame, said sash window frame being selectively pivotable out of said stationary window frame about one of a vertical axis and a horizontal axis; a drive train positioned between said sash window frame and said stationary window frame, said drive train being moveable between a first position, a second position and a third position, said first position preventing said sash window frame from being pivoted out of said stationary window frame, said second position enabling said sash window frame to be pivoted about said horizontal axis, and said third position enabling said sash window frame to be pivoted about said vertical axis; and a locking mechanism provided on said sash window frame, said locking mechanism including: a pin, said pin having a locked position and an unlocked position and configured to be spring-biased into said locked position; and an aperture within said drive train, said aperture configured to receive a proximal end of said pin; wherein said pin extends into said aperture when in said locked position so as to prevent movement of said drive train from said second position into said third position, and wherein said pin in said unlocked position allows said movement of said drive train from said second position into said third position and; wherein said drive train is provided with a ramp disposed adjacent to the aperture, said ramp enabling movement of said drive train between said first position and said second position so as to allow said sash window frame to be pivoted about said horizontal axis without said pin moving into said unlocked position.
  • 20. A multi-position window as claimed in claim 19 wherein said pin is positioned within said aperture so as to not interfere with a closing of said sash window frame within said stationary window frame when said pin is in said locked position.
  • 21. A multi-position window as claimed in claim 20 wherein said pin is provided with a stop, and wherein placement of said stop on said pin determines an amount said pin extends into said aperture in said locked position.
  • 22. A multi-position window as claimed in claim 19 wherein said pin is provided with a grip which enables retracting said pin out of said aperture and into said unlocked position.
  • 23. A multi-position window as claimed in claim 19 further including a handle rotatably mounted on said sash window frame, wherein rotation of said handle causes movement of said drive train between said second position and said third position.
  • 24. A multi-position window comprising:a stationary window frame; a sash window frame positioned within said stationary window frame, said sash window frame being selectively pivotable out of said stationary window frame about one of a vertical axis and a horizontal axis; a drive train positioned between said sash window frame and said stationary window frame, said drive train being moveable between a first position, a second position and a third position, said first position preventing said sash window frame from being pivoted out of said stationary window frame, said second position enabling said sash window frame to be pivoted about said horizontal axis, and said third position enabling said sash window frame to be pivoted about said vertical axis; and a locking mechanism provided on said sash window frame, said locking mechanism including: an elongate slot within said drive train, said elongate slot having a length sufficient to enable movement of said drive train between said first position and said second position so as to allow said sash window frame to be pivoted about said horizontal axis; a first actuation-bar having a proximal end and a distal end; and a second actuation-bar having a proximal end and a distal end; said first actuation-bar and said second actuation-bar being pivotally attached to one another at their respective distal ends such that the proximal end of said first actuation-bar extends through said sash window frame to provide a toggle for unlocking the locking mechanism; and said second actuation-bar being spring-biased and adapted to move into and out of said elongate slot in response to toggling of said first actuation-bar.
  • 25. A multi-position window as claimed in claim 24 further including a handle rotatably mounted on said sash window frame, wherein rotation of said handle causes movement of said drive train between said second position and said third position.
  • 26. A multi-position window as claimed in claim 24 wherein said proximal end of said second actuation-bar is positioned within said slot so as to not interfere with a closing of said sash window frame within said stationary window frame.
US Referenced Citations (16)
Number Name Date Kind
2869486 Scites Jan 1959 A
3004304 Frank Oct 1961 A
3667162 Lalague Jun 1972 A
3911621 McHeffey Oct 1975 A
4059924 Bierlich Nov 1977 A
4074462 McHeffey Feb 1978 A
4339844 Shatters Jul 1982 A
4339892 Ulbricht et al. Jul 1982 A
4602457 Kreusel Jul 1986 A
4624075 Vigreux Nov 1986 A
4811518 Ladisa Mar 1989 A
5076015 Manzalini Dec 1991 A
5226256 Fries et al. Jul 1993 A
5615522 Tomanek Apr 1997 A
5881498 Goggin et al. Mar 1999 A
6062368 Kamm May 2000 A