NZ700469B2 - Two point lock for bi-fold windows and doors - Google Patents
Two point lock for bi-fold windows and doors Download PDFInfo
- Publication number
- NZ700469B2 NZ700469B2 NZ700469A NZ70046912A NZ700469B2 NZ 700469 B2 NZ700469 B2 NZ 700469B2 NZ 700469 A NZ700469 A NZ 700469A NZ 70046912 A NZ70046912 A NZ 70046912A NZ 700469 B2 NZ700469 B2 NZ 700469B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- driver
- lock
- shoot bolt
- locking member
- shoot
- Prior art date
Links
- 230000000875 corresponding Effects 0.000 claims description 9
- 230000000295 complement Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract 2
- 210000000088 Lip Anatomy 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000002708 enhancing Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 241000182988 Assa Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 230000036633 rest Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Abstract
The present invention relates to locks which use shoot bolts to secure a window or door in its closed position, and more particularly, but not exclusively, to a two point lock for use in bi-fold windows and doors. There are unique challenges to meeting the demands of bi-fold doors, such as having a thin housing to fit with the frame. The present invention also has improved security. The present invention uses a two point lock for securing bi-folding windows and doors in which upper and lower shoot bolt arms 32, 34 move in opposite directions from a central lock body 30 upon rotation of a handle 14. When the arms are in their mutually extended positions, a sliding detent locking member 50 can be engaged through an elongate slot of the upper shoot bolt arm 32 to secure the upper shoot bolt arm and hence the window or door in the closed position. This configuration has the effect of reducing the size of the locking member and as such the lock housing, and the shoot bolts can be locked in their extended position in more secure manner so as to be more resistant to being overcome by force. thin housing to fit with the frame. The present invention also has improved security. The present invention uses a two point lock for securing bi-folding windows and doors in which upper and lower shoot bolt arms 32, 34 move in opposite directions from a central lock body 30 upon rotation of a handle 14. When the arms are in their mutually extended positions, a sliding detent locking member 50 can be engaged through an elongate slot of the upper shoot bolt arm 32 to secure the upper shoot bolt arm and hence the window or door in the closed position. This configuration has the effect of reducing the size of the locking member and as such the lock housing, and the shoot bolts can be locked in their extended position in more secure manner so as to be more resistant to being overcome by force.
Description
TWO POINT LOCK FOR BI-FOLD WINDOWS AND DOORS
TECHNICAL FIELD
The present invention relates to locks which use shoot bolts to secure a window or
door in its closed position, and more particularly, but not exclusively, to a two point lock
for use in bi-fold windows and doors.
BACKGROUND
A bi-fold door is a type of sliding door that has multiple hinged sections that fold
together as the door is opened, and thus it is conventionally locked by way of vertical shoot
bolts that project from the door into the surrounding frame so as to anchor the door at its
top and bottom. The shoot bolts are typically connected by rods to shoot bolt arms of a
central lock, and the shoot bolt arms are operatively coupled to a rotating driver so as to be
moved linearly in opposite directions as the driver rotates. The rotating driver is typically
provided as a follower to the spindle of a lever style handle, and thus when the handle is in
one orientation (e.g. horizontal) the shoot bolts are fully retracted and when the handle is
in another orientation (e.g. vertical) the shoot bolts are fully extended.
In the bi-fold door lock marketed by Assa Abloy Australia Pty Limited (Sherwood
QLD) as the TWIN BOLT LOCK, the spindle follower is rotatably mounted in one side
of the lock casing and a tensioning disk is mounted at the other end of the spindle
follower. The tensioning disk has four flattened sections that interact with the flat interior
side walls of the lock casing to bias the follower towards two different home positions
corresponding to the shoot bolts being either fully extended or fully retracted. The
rotation of the spindle follower is converted to opposite linear motion of the shoot bolt
arms by way of a planetary gear system, i.e. the spindle follower is the central gear and each
shoot bolt arm is pivotably linked to a respective satellite gear. And for applications
requiring additional security, deadlocking is provided by using a key cylinder to press a
locking plate into engagement with the follower, thereby preventing the follower from
rotating.
While a bi-fold style lock can generally be employed in other types of doors, such
as in the secondary door of a set of French doors, there are unique challenges to meeting
the demands of bi-fold doors. This is because in most bi-fold doors applications, it is
desirable to have the handle mounted on only one side of the door (the interior side) in
order to leave the other side (the exterior side) unobstructed. This allows the sections to
lay flat against each other when the door is fully opened, but it also results in the exterior
end of the spindle being unsupported. Thus, as one pulls on the lever handle to open a bi-
fold door, there can be a tendency for the spindle to move or shift within the lock.
As present bi-fold lock designs suffer from a variety of drawbacks, limitations,
disadvantages and problems, there is need for improvement in the art.
SUMMARY
According to one aspect, a unique bi-fold lock is provided in which the shoot bolts
can be locked in their extended position in more secure manner so as to be resistant to
being overcome by force. According to another aspect, a unique bi-fold lock is provided in
which the handle in more securely maintained in its two different rest positions.
Accordingly to another aspect, a unique bi-fold lock is provided in which the shoot bolt
driving mechanism is simple in design and construction. According to another aspect, a
unique bi-fold lock is provided in which the shoot bolt driving mechanism can better
tolerate or prevent shifting of the spindle. Further embodiments, forms, features, aspects,
benefits, and advantages of the present application shall become apparent from the
description and figures provided herewith.
BRIEF DESCRIPTION OF THE FIGURES
Features of the invention will be better understood from the following detailed
description when considered in reference to the accompanying drawings, in which:
Figure 1 is an exploded view of a two point lock according to one embodiment
installed in a conventional bi-fold door.
Figure 2 is an exploded view of the lock of Figure 1.
Figure 3 is an elevational view in partial section showing the Figure 1 lock in an
unlocked configuration with the shoot bolt arms retracted.
Figure 4 is an elevational view in partial section showing the Figure 1 lock in a
locked configuration with the shoot bolt arms extended.
Figure 5 is an perspective view of one of the biasing pads used in the Figure 1 lock.
Figure 6 is an elevational view of the biasing pad of Figure 5.
DETAILED DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENT
While the present invention can take many different forms, for the purpose of
promoting an understanding of the principles of the invention, reference will now be made
to the embodiments illustrated in the drawings and specific language will be used to
describe the same. It will nevertheless be understood that no limitation of the scope of the
invention is thereby intended. Any alterations and further modifications of the described
embodiments and any further applications of the principles of the invention as described
herein are contemplated as would normally occur to one skilled in the art to which the
invention relates.
With reference to the Figures, two point lock 30 is designed to be embedded within
the stile 10 of a conventional bi-fold window or door. The lock 30 is mounted within the
stile 10 in a manner that is generally similar to known locks, and thus only a representative
section of the stile 10 is shown in Figure 1.
The central lock 30 is positioned in the hollow cavity 12 that extends the length of
stile 10 with appropriately sized packers 22 clipped to casing 31 to position the lock at the
appropriate depth within the cavity 12. Upper and lower connecting rods 26, 28 are
screwed into the ends of the corresponding shoot bolts bolt arms 32 and 34 and, after the
rods are cut to the appropriate length, D shaped tips 27, 29 are crimped in the ends of the
connecting rods 26, 28.
The spindle 16 of the lever style handle 14 extends through the stile 10 and through
the correspondingly shaped opening 25 in lock 30. The end 16a of spindle extends entirely
through the lock 30 but not into the exterior face of the stile (not shown), because in the
illustrated embodiment, there is no corresponding handle on the exterior face to receive
and support the end 16a of spindle 16. The two mounting screws for the handle
escutcheon extend through the corresponding holes in the stile 10 and the packers 22 and
into threaded mounting holes 71, 73, that extend entirely through lock casing 31, and
tightening of these mounting screws serves to secure the lock 30 in position.
Key cylinder 18 is secured within its housing 20 with a retainer and wafer screw,
and the assembly is then placed through the rectangular shaped opening and lock cylinder
locator 23 so as to have cylinder tail 19 extending through rectangular opening in locking
cam 54. Key cylinder escutcheon 21 is secured to frame 10 to retain the key cylinder
assembly in place and cover the opening.
To further secure the lock 30 within the stile, additional screws (not shown) may be
inserted through the side of the stile into the side mounting holes provided near the upper
and lower ends of the casing 31. In other embodiments, the lock 30 may be configured as
a mortise style lock.
With reference to Figures 2-4, spindle 16 extends through the central bore of a
shoot bolt driver 40 that is shaped such that it rotates with the spindle 16 in a follower
arrangement. The driver 40 is composed of two spindle followers 42 and 44 that are of
identical construction and are coupled together by pins 63 and 68, which serve to pivotably
connect the assembly to upper and lower linkage arms 62, 66. Follower 42 has a rounder
shoulder portion 46 that is rotatable supported in the rounded opening 47 in casing 31a,
and the corresponding shoulder portion (not shown) on follower 44 is identically
supported in opening 49 of casing 31b. Thus, the driver 40 is supported in the casing 31 at
both of its ends, which enhances its stability.
The upper and lower shoot bolt arms 32 and 34 are contained within casing 31 so
as to be slidable along the longitudinal axis of lock, which corresponds to the vertical
direction. The other end of the upper linkage arm 62 is pivotably coupled to upper shoot
bolt arm 32 with pin 64, and the other end of lower linkage arm 66 is pivotably coupled to
lower shoot bolt arm 34 with pin 67.
In operation, as the driver 40 rotates counter clockwise as viewed in which
corresponds to the lever handle 14 rotating downward as seen in the upper shoot
bolt arm 32 slides upward and the lower shoot bolt arm 34 slides downward until the
mutually extended position of is reached. Rotation of the handle 14 in the opposite
direction reverses the process and moves the shoot bolt arms from the mutually extended
position of to the mutually retracted position of
In both the mutually extended and mutually retracted configurations, the follower
44 contacts the inwardly projecting lips 79 provided on casing 31b above and below
opening 49 (see and follower 42 contacts corresponding lips (not shown) on casing
31a. The contact of the followers 42, 44 with the casing lips serves as a positive stop to the
driver 40 and helps to assure that any additional rotational force applied to the lever is
transferred to the casing 31a and 31b, thus protecting the internal lock components.
In the illustrated embodiment, each shoot bolt arm is coupled to an opposing
portions of a common driver by way of a single pivoting linkage, which is an efficient
design that allows the size of the lock 30 to be reduced. Further, because the shoot bolt
arms 32, 34, linkages 62, 66, and driver 40 can be pre assembled as an integrated assembly,
overall assembly of the lock 30 can be made more efficient or reliable.
In other embodiments, the shoot bolts arms may be moved in opposite directions
by other means know in the art. For example, rather than having both linkages 62, 66
coupled to a common driver 40 so as to move the same extent, one of the spindle hubs 42,
44 can be converted to a planetary gear with one or both of the linkages 62, 66 coupled to
a satellite gear. Alternatively, in place of pivotable linkages 62, 66, connecting the shoot
bolt arms 32, 34 to the driver 40, the shoot bolt arms can be directly coupled to the driver
40, for example, with a driver pin riding in a slot on the shoot bolt arm.
Locking member 50 is slideable within casing and is constrained to move in a
horizontal path as viewed in FIGS. 3 and 4 by a guiding slot (not shown) formed in lock
casing 31a and guiding features in the lock casing 31b. The locking member 50 is moved
between the unlocked position shown in and the locked position shown in
by cylinder cam 54, which is actuated by key cylinder 18.
A spring biased plunger 52 is carried within locking member 50 so as to have an
operating stroke into the page as viewed in FIGS. 3 and 4. The plunger 52 engages in
corresponding recesses 56, 58 in casing 31b and serves to yielding bias the locking member
50 to be in either the locked or unlocked position.
When in the locked position, locking member 50 is received in the longitudinally
elongated slot 60 that extends entirely through the upper shoot bolt arm 32. Accordingly,
when the locking member 50 is engaged in slot 60 of upper shoot bolt arm 32, retraction of
the shoot bolts is prevented. Moreover, if a vandal were to apply a large torque to the
handle 14 in an effort to force the lock open, the upper shoot bolt arm 32 can be made to
remain locked, and either pin 64 or 63 can be made to break. Thus, while forcing the
handle 14 would allow the lower shoot bolt to be withdraw, the upper shoot bolt would
remain engage to keep the door secured. Accordingly, the provision of locking member 50
engaging with the upper shoot bolt arm 32 can serve to make the lock more secure against
vandals.
In other embodiments, lock 30 may be provided without locking member 50, or
locking member 50 may be adapted to directly engage the driver 40.
The outer radial surface of each of the followers 42, 44 are provided with recess 43
and 45 that interact with the curved contacting faces 78 of biasing pads 70 to bias the
driver 40 towards stable rest positions. These rest positions correspond to the shoot bolt
arms being either fully extended, which is the configuration shown in or fully
retracted, which is the configuration shown in It is to be understood that a rest
position is a position whereby the driver rests against the contact face of the biasing pad 70
in a stable manner (i.e. where the forces applied by the contact face to the driver are
balanced so that no moment is created to rotate the driver.) In contrast, when the driver is
moved away from a rest position, the contact face of the biasing pad 70 pushes back
against the driver 40 so as to create a restoring moment that tends to urge the driver 40 to
rotate into one of its stable rest position, though the moment created may or may not be of
sufficient magnitude to overcome, for example, the friction related to the shoot bolts
entering their respective strikers.
The biasing pads 70 are made of a hard synthetic material, such as nylon, and are
secured to mounting posts 72, 74 which extend from lock casing 31b in directions parallel
to the axis of the driver 40. More specifically, as shown in FIGS. 5 and 6, each pad 70 has
a main body portion or base 77 having a through hole 76 that is shaped like the mounting
posts 72 or 74, and each pad 70 has a contacting face 78 that is provided on an arm that is
both longitudinally offset from the base 77 and spaced from the base (as viewed in .
Two pads 70 are mounted on the upper mounting post 72 and two pads are mounted on
the lower mounting post 74 with the bases 77 in each pair adjacent to each other. As a
result, the contact faces 78 for one set of the pads 70 are at opposing radial positions
relative to follower 42 and the contact faces 78 for another set of the pads 70 are at
opposing radial positions relative to with follower 44. The provision of multiple contacting
faces 78 interacting with the rotating driver 40 at different points along the axis of the
driver 40 and from multiple sides at a single location enhances the stability of lock 30 and
serves to reduce the chance that the shoot bolts will be improperly positioned.
In operation, as the driver 40 rotates away from either the home position shown in
or the home position of the contact face 78 of each pad 70 must
compresses or deflect inwardly towards the respective mounting post, which allows for the
storage of considerable potential energy in the pad 70, and the release of the stored energy
can be sufficient to rotate the driver 40 to one of the home positions.
As is to be appreciated, what has been described includes a novel two point lock
for securing bi-fold windows and doors comprising a central lock body, a handle that is
rotatable with respect to the lock body between a first rest position and a second rest
position, first and second shoot bolt arms that move in opposite directions upon rotation
of the handle and are maintained in a mutually retracted position when the handle is in the
first rest position and in a mutually extended position when the handle is in the second rest
position, a locking member moveable within the casing between a locked position, in
which the locking member is engaged with the first shoot bolt arm in its extended position,
and an unlocked position, in which the locking member is unengaged with the first shoot
bolt arm, and, an actuator, such as would be operated by a key, for moving the locking
member between its locked and unlocked positions when the shoot bolt arms are in their
mutually extended position. The locking member may be slideable within the housing and
yielding biased to remain in at least one of the locked and the unlocked position, which
may be accomplished by the provision of at least one spring biased plunger which may
operate in a direction normal to the direction of travel of the locking member. The locking
member may engage in a locking slot of the first shoot bolt arm, and that slot may
correspond in size to the locking member, for example with both being elongated in the
direction of travel of the first shoot bolt arm. The locking slot may extend entirely through
the first shoot bolt arm.
The motion of the shoot bolt arms may be linked to the rotation of the handle in a
number of ways known in the art. In one preferred form, each shoot bolt arm is coupled
to a rotating driver by way of a linkeage arm that is pivotably coupled to the driver and to
the shoot bolt arm. Individual drivers for each arm may be operated from a central hub, or
each shoot bolt arm may be coupled to opposing portions of the same rotating driver. The
rotating driver may be rotatably supported in the lock body at two different locations along
the rotation axis of the driver.
The lock body may include at least one spindle follower that rotates with the handle
and at least one biasing device that interacts with the spindle follower to maintain the
handle in the first and second rest positions. The biasing device may comprise a plurality
of biasing pads having curved contact faces that engage with corresponding recesses in the
spindle follower.
What has also been described is a novel two point lock for securing bi-fold
windows and doors comprising a central lock body, a driver contained within the body so
as to be rotatable by a handle, a plurality of biasing pads having curved contact faces that
engage with recess in radial surfaces of the driver to maintain the driver in a first rest
position and a second rest position, and first and second shoot bolt arms that move in
opposite directions upon rotation of the driver and are maintained in a mutually retracted
position when the driver is in the first rest position and in a mutually extended position
when the driver is in the second rest position. Each biasing pad may include a body
portion and an arm spaced from the body portion. The body portion may be mounted on
a post and the arm may be made to deflect towards the post as the driver is rotated
between the first rest position and the second rest position. The driver is rotatably
supported in the lock body at two different locations along the rotation axis of the driver.
The biasing pads may contact the driver at different locations along the rotation axis of the
driver and/or at opposing radial positions. The lock may further include a locking member
for selectively locking the shoot bolts in their mutually extended position, for example, one
that is selectively engageable with the first shoot bolt arm.
What is also described is a two point lock for securing bi-fold windows and doors
comprising a central lock body, a driver rotatably supported in the lock body at two
different locations along the rotation axis of the driver, at least one biasing pad that
interacts with the driver to maintain the driver in a first rest position and a second rest
position, and first and second shoot bolt arms that move in opposite directions upon
rotation of the driver and are maintained in a mutually retracted position when the driver is
in the first rest position and in a mutually extended position when the driver is in the
second rest position. The biasing pads may have curved contact faces that engages with
recesses in the driver. A plurality of biasing pads contact the driver at different locations
along the rotation axis of the driver, and/or at opposing radial positions. The lock body
may include a first set of stops which contact the driver in the first position so as to
prevent further rotation of the driver in a first direction and/or a second set of stops which
contact the driver in the second position so as to prevent further rotation of the driver in a
second direction.
While the invention has been illustrated and described in detail in the drawings and
foregoing description, the same is to be considered as illustrative and not restrictive in
character, it being understood that only the preferred embodiments have been shown and
described and that all changes and modifications that come within the spirit of the
inventions are desired to be protected. It should be understood that while the use of
words such as preferable, preferably, preferred or more preferred utilized in the description
above indicate that the feature so described may be more desirable, it nonetheless may not
be necessary and embodiments lacking the same may be contemplated as within the scope
of the invention, the scope being defined by the claims that follow. In reading the claims,
it is intended that when words such as “a,” “an,” “at least one,” or “at least one portion”
are used there is no intention to limit the claim to only one item unless specifically stated to
the contrary in the claim. When the language “at least a portion” and/or “a portion” is
used the item can include a portion and/or the entire item unless specifically stated to the
contrary.
Claims (22)
1. A two point lock for bi-fold windows and doors, comprising: a central lock body; a handle that is rotatable with respect to the lock body between a first rest position and a second rest position, the handle being rotatably coupled to a driver; first and second shoot bolt arms that move in opposite directions upon rotation of the driver and are maintained in a mutually retracted position when the handle is in the first rest position and in a mutually extended position when the handle is in the second rest position, the first shoot bolt arm having a locking slot that is elongated in the direction of travel of the first shoot bolt arm and the first and second shoot bolt arms being coupled to the driver by way of a linkage arm that is pivotably coupled to the driver and to the respective shoot bolt arm; a locking member complementary with the locking slot, and moveable within the lock body between a locked position, in which the locking member is engaged through the locking slot and entirely through the first shoot bolt arm in its extended position, and an unlocked position, in which the locking member is unengaged with the first shoot bolt arm; and an actuator for moving the locking member between its locked and unlocked positions when the shoot bolt arms are in their mutually extended position.
2. The lock of claim 1 wherein the actuator is operated by a key.
3. The lock of claim 1 wherein the locking member is slidable within the lock body.
4. The lock of claim 1 wherein the locking member is yielding biased to remain in the locked and the unlocked position by at least one spring biased plunger.
5. The lock of claim 1 wherein each shoot bolt arm is coupled to opposing portions of the same rotating driver.
6. The lock of claim 5 wherein the rotating driver is rotatably supported, to allow the driver to rotate, in the lock body at two different locations along the rotation axis of the driver.
7. The lock of claim 1 wherein the lock body includes at least one spindle follower that rotates with the handle and at least one biasing device that interacts with the spindle follower to maintain the handle in the first and second rest positions.
8. The lock of claim 7 wherein the at least one biasing device comprises a plurality of biasing pads having curved contact faces that engage with corresponding recesses in the spindle follower.
9. A two point lock for bi-fold windows and doors, comprising: a central lock body; a driver contained within the body so as to be rotatable by a handle; a plurality of biasing pads having curved contact faces that engage with recess in radial surfaces of the driver to maintain the driver in a first rest position and a second rest position; and first and second shoot bolt arms that move in opposite directions upon rotation of the driver and are maintained in a mutually retracted position when the driver is in the first rest position and in a mutually extended position when the driver is in the second rest position, the first shoot bolt arm having a locking slot that is elongated in the direction of travel of the first shoot bolt arm, a locking member moveable within the lock body between a locked position, in which the locking member is engaged through the locking slot and entirely through the first shoot bolt arm in its extended position, and an unlocked position, in which the locking member is unengaged with the first shoot bolt arm; and an actuator for moving the locking member between its locked and unlocked positions when the shoot bolt arms are in their mutually extended position.
10. The lock of claim 9 wherein the each biasing pad comprises a body portion and an arm spaced from the body portion.
11. The lock of claim 10 wherein the body portion is mounted on a post and the arm deflects towards the post as the driver is rotated between the first rest position and the second rest position.
12. The lock of claim 9 wherein the driver is rotatably supported, to allow the driver to rotate, in the lock body at two different locations along the rotation axis of the driver.
13. The lock of claim 12 wherein the biasing pads contact the driver at different locations along the rotation axis of the driver.
14. The lock of claim 9 wherein the biasing pads contact the driver at opposing radial positions.
15. The lock of claim 9 wherein the lock comprises a locking member for selectively locking the shoot bolts in their mutually extended position.
16. A two point lock for bi-fold windows and doors; comprising: a central lock body; a driver rotatably supported, to allow the driver to rotate, in the lock body at two different locations along the rotation axis of the driver; at least one biasing pad that interacts with the driver to maintain the driver in a first rest position and a second rest position; and first and second shoot bolt arms that move in opposite directions upon rotation of the driver and are maintained in a mutually retracted position when the driver is in the first rest position and in a mutually extended position when the driver is in the second rest position, the first shoot bolt arm having a locking slot that is elongated in the direction of travel of the first shoot bolt arm; a locking member moveable within the lock body between a locked position, in which the locking member is engaged through the locking slot and entirely through the first shoot bolt arm in its extended position, and an unlocked position, in which the locking member is unengaged with the first shoot bolt arm.
17. The lock of claim 16 wherein the at least one biasing pad has a curved contact face that engages with at least one recesses in the driver.
18. The lock of claim 16 wherein a plurality of biasing pads contact the driver at different locations along the rotation axis of the driver.
19. The lock of claim 16 wherein a plurality of biasing pads contact the driver at opposing radial positions.
20. The lock of claim 16 wherein the lock body includes a first set of stops which contact the driver in the first position so as to prevent further rotation of the driver in a first direction.
21. The lock of claim 20 wherein the lock body includes a second set of stops which contact the driver in the second position so as to prevent further rotation of the driver in a second direction.
22. A bi-fold window or door comprising the lock of any of the preceding claims.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2012/029949 WO2013141856A1 (en) | 2012-03-21 | 2012-03-21 | Two point lock for bi-fold windows and doors |
Publications (2)
Publication Number | Publication Date |
---|---|
NZ700469A NZ700469A (en) | 2016-11-25 |
NZ700469B2 true NZ700469B2 (en) | 2017-02-28 |
Family
ID=
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU2012374078B2 (en) | Two point lock for bi-fold windows and doors | |
US7871112B2 (en) | Reversible double deadbolt mortise latch | |
US7418845B2 (en) | Two-point mortise lock | |
US4218903A (en) | Lock mechanism | |
US8939474B2 (en) | Lock with sliding locking elements | |
US8523247B2 (en) | Cylinder lock with pivotally-mounted bolt | |
CA2591460C (en) | Door lock having an unlockxng mechanism for simultaneously unlatching latch-bolt and deadbolt mechanisms | |
US8181393B2 (en) | Lock mechanism for a hinged leaf of a double door or gate | |
US7257973B2 (en) | Chassis for a lock set | |
US20040163431A1 (en) | Mortice lock | |
GB2413154A (en) | Latch assemblies | |
US6931897B2 (en) | Lock for a sliding door or gate | |
US20140069154A1 (en) | Reversible door and multipoint lock | |
US7354081B2 (en) | Single bolt mortise lock | |
GB2413153A (en) | Latch assembly with lockable sliding actuator | |
EP2665878A2 (en) | Mortise lock with deadbolt and magnetic latch | |
US2742310A (en) | Dead latch mechanism | |
US10508470B2 (en) | Lock body | |
NZ700469B2 (en) | Two point lock for bi-fold windows and doors | |
US20110285149A1 (en) | Multiple access door lock mechanism with reversible cam actuation | |
US3804440A (en) | Rotary locking bolt | |
CN105658888A (en) | Mortice lock assembly operable in holdback mode and anti-lockout mode | |
JP3088342B2 (en) | Clemonrock device | |
US20230087515A1 (en) | Lock assembly for a vehicle load compartment | |
US20020096891A1 (en) | Interconnected lock with asymmetric carrier |