U.S. patent number 3,927,906 [Application Number 05/466,521] was granted by the patent office on 1975-12-23 for flip down door lock.
Invention is credited to Raymond J. Mieras.
United States Patent |
3,927,906 |
Mieras |
December 23, 1975 |
Flip down door lock
Abstract
A lock for sliding doors utilizes an elongated locking bar and
means for mounting the bar in a first closed position wherein the
bar acts to lock the closure by preventing sliding thereof, and in
a second open position wherein the bar member allows sliding of the
door. Preferably, the mounting means includes a spring-lock hinge
assembly, which acts to bias the bar in its first closed position,
and supports it in its second open position without additional
support means.
Inventors: |
Mieras; Raymond J. (Grand
Rapids, MI) |
Family
ID: |
23852087 |
Appl.
No.: |
05/466,521 |
Filed: |
May 3, 1974 |
Current U.S.
Class: |
292/262;
292/DIG.46 |
Current CPC
Class: |
E05B
65/0888 (20130101); Y10T 292/28 (20150401); Y10S
292/46 (20130101) |
Current International
Class: |
E05B
65/08 (20060101); E05C 017/04 () |
Field of
Search: |
;292/DIG.46,DIG.9,DIG.49,262,304,305 ;49/449 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Moore; Richard E.
Attorney, Agent or Firm: Price, Heneveld, Huizenga &
Cooper
Claims
The embodiments of the invention in which an exclusive property or
privilege is claimed are defined as follows:
1. A locking means for preventing opening of a sliding closure
wherein the sliding closure is slidably mounted in a frame having a
header above the sliding closure and two jambs, said header having
at least one sliding channel on the header along which the closure
slides, said locking means comprising: an elongated rigid bar
member; and mounting means for suspending said bar member from said
header in a first closed position in abutting engagement between
the edge of said closure and an adjacent jamb, said mounting means
including a spring lock-hinge assembly for permitting swinging
movement of said bar member from said first closed position to a
second open position in disengagement from between the edge of said
closure and said adjacent jamb to allow sliding of said closure in
said frame and biasing said locking bar into said first closed
position when therein and supporting said bar member over the
closure when in said second position without additional
support.
2. In combination with a sliding closure with a frame having jambs
at both sides thereof, a header above the sliding closure and at
least one sliding channel on the header along which the closure
slides, said closure being capable of sliding along said channel
until one of its edges engages an adjacent jamb, a locking means
for said closure comprising:
an elongated rigid bar means; and
mounting means for suspending said bar member from said header in a
first closed position in abutting engagement between one edge of
said closure and an adjacent jamb, said mounting means including a
spring-lock assembly for permitting swinging movement of said bar
member from said first closed position to a second open position in
disengagement from between said one edge of said closure and said
adjacent jamb to allow sliding of said closure in said channel,
said assembly biasing said locking bar into said first closed
position when therein and supporting said bar member over the
closure when in said second open position without additional
support.
3. A locking means as recited in claim 1 wherein said spring-lock
assembly comprises:
an upper anchoring surface rigidly attached to said header and
having a flange,
a lower anchoring surface rigidly attached to said elongated rigid
bar member, hingedly attached to said upper anchoring surface, and
having a slotted opening, and
a C-shaped resilient clip having a flange at each end, one flange
cooperating with the flange of the upper anchoring surface and the
other flange cooperating with the slotted opening of the lower
anchoring surface.
4. A locking means as recited in claim 2 wherein said spring-lock
assembly comprises:
an upper anchoring surface rigidly attached to said header and
having a flange,
a lower anchoring surface rigidly attached to said elongated rigid
bar member, hingedly attached to said upper anchoring surface, and
having a slotted opening, and
a C-shaped resilient clip having a flange at each end, one flange
cooperating with the flange of the upper anchoring surface and the
other flange cooperating with the slotted opening of the lower
anchoring surface.
Description
BACKGROUND OF THE INVENTION
The locking device of this invention relates to locks for sliding
closures and particularly to locks for sliding doors.
Numerous simple devices have been utilized for locking sliding
doors. The most common such device consists of an elongated bar
which is manually placed in the bottom track of the sliding door
between the door jamb and the abutting door housing frame.
Because of the inconvenience of having to manually place the bar in
such a position and then manually removing and storing the bar when
not in use, devices were developed which are hingedly mounted below
the sliding door housing so as to store the bar in spaced
relationship generally parallel to the bottom track of the housing.
Such devices are usually engaged by pivoting the stop bar with
one's foot into the door securing position between the door jamb
and housing frame. Gravity acts to hold the bar in this position
until it is desired to open the sliding door and then the bar is
manually pivoted from the locking position into a storage position
along the bottom of the door where gravity similarly acts to hold
the bar.
The disadvantage of such door stopping devices is that the bar when
not securing the sliding door generally interferes with use of
floor space adjacent the sliding door. Also, an actual safety
hazard may develop because of the danger of tripping or falling
over the bar and mounting. Further, in some instances, the bar may
be actually disengaged by vibrating the door and/or the door frame
by one who is external to the door.
OBJECTS AND SUMMARY OF THE INVENTION
Accordingly, it is an object of this invention to provide a locking
device which will securely lock a sliding glass door or other
sliding closure when in a closed position and which may be
disengaged only by one positioned inside the area being secured by
the door or closure and not by one standing on the outside
tampering with the door frame.
It is another object of the present invention to provide a locking
device that is urged into abutting relationship with respect to the
door but which may be manually released and which is retractable to
permit opening of the door in a direction opposite to which it was
closed.
It is a still further object of this invention to provide a locking
device which does not interfere with the use of floor space
adjacent to the sliding closure.
And, it is still an even further object of this invention to
provide a locking device for sliding closures which resists
disengagement by vibration of the closure and/or the frame housing
the closure.
These and other objects and advantages of the present invention are
accomplished by utilizing a locking means for a sliding closure
wherein the sliding closure is slidably mounted in a frame having a
header and two jambs. The locking means comprises an elongated bar
member and mounting means for suspending the bar member from the
header in a first closed position in abutting engagement between
the edge of the closure and its adjacent jamb. The mounting means
further includes, means for permitting swinging movement of the bar
member from the closed position to a second open position in
disengagement from between the edge of the closure and the jamb to
allow sliding of the closure in the frame.
Preferably, the mounting means for the elongated bar member
includes a spring-lock type hinge assembly which resists
disengagement when the locking member is in a closed position and
which acts to secure the locking member over the closure when the
locking member is in the open position without additional support
means.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a partial elevational front view of a sliding assembly
with a locking device engaged in the door securing or closed
position;
FIG. 2 shows a partial elevational front view of the sliding door
of FIG. 1 with the locking device in the non-door securing or open
position;
FIG. 3 is an enlarged partial vertical cross-sectional side view of
the locking device taken along plane III--III of FIG. 2;
FIG. 4 is an enlarged plan view of the spring-lock hinge assembly
of the locking device in FIG. 1 when the locking device is in its
closed position;
FIG. 5 is a side view of the spring-lock hinge assembly taken along
plane V--V of FIG. 4;
FIG. 6 is an enlarged plan view of the spring-lock hinge assembly
of the locking device in FIG. 2 when the locking device is in its
open position; and
FIG. 7 is a side view of the spring-lock hinge taken along plane
VII--VII of FIG. 6.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the drawings, sliding closure locking device 20
comprises an elongated locking member or bar 21 with hinge
assemblies 22 (FIG. 1-3) attached thereto. The device 20 is
suspended above the sliding door or closure 10 by attachment of
hinge assemblies 22 on the sliding door upper or header 14 and
shown in FIGS. 1 and 2. As is apparent from the Figures, bar 21 is
generally parallel to header 14 and is supported by assemblies 22
at all times in spaced relation therefrom.
The sliding door frame comprises an upper frame or header 14, two
side walls on jambs 13 and 16 and a sill along its bottom portion.
It further includes a channel 10a in the header 14 along which door
10 may be slid.
Locking member or bar 21, as shown in FIGS. 1-3, is elongated and
generally rectangular in shape. In the embodiment shown therein, it
is rigid and comprised of a relatively strong material, e.g., metal
or wood. If desired, bar 21 may include at both ends thereof
stopping surfaces, such as rubber-gripping boots or the like.
Referring to FIGS. 4-7, it can be seen that each spring-lock hinge
assembly 22 comprises a flat rectangular planar upper anchoring
surface 23 and a similar lower anchoring surface 24 both joined by
a hinge portion 25 therebetween and a C-shaped clip 26.
The upper anchoring surface 23 includes along a rectangular slot
23d therein and a flange 23a which protrudes outwardly from the
upper anchoring surface 23 and comprises an upwardly directed lip
23b thereon. Lower anchoring surface 24 includes a slot 24a in the
nonseating portion 24b of the inverted L-shaped lower anchoring
surface 24.
C-shaped clip 26, connecting anchoring surfaces 23 and 24, is made
of a shape-remembering material such as spring steel comprises lips
26a along both ends thereof. The lips 26a are inwardly directed
from the C-shaped clip 26. Clip 26 is positioned between upper
anchoring surface 23 and lower anchoring surface 24 by engagement
of one of its lips 26a over the lip 23b of flange 23a and by
extending through slot 24a and engagement of the other of its lips
26a with the portion of the nonseating wall 24b forming slot 24a in
lower anchoring surface 24.
As seen in FIGS. 4 and 5, when hinge assembly 22 is in a closed
position, clip 26 is distended over hinged portion 25 of hinge 22.
Because of the distension, clip 26 acts to resist upward rotation
of lower anchoring surface 24.
In the relaxed or open position shown in FIGS. 6 and 7, clip 26
acts to suspend surface 24 in the position shown. As is apparent
from all these figures, lips 26a in the both open and closed
positions are secured over lips 23b of flange 23a and over the
portion of wall 24b forming slot 24a in lower anchoring surface
24.
Assembly 22 is attached to header 14 and bar 21 by screws driven
through holes 27 in anchoring surfaces 24 and 25. As seen in the
preferred embodiment, two assemblies 22 are used but as is
apparent, one or several assemblies can be used and placed in
whatever position is convenient.
As seen in FIG. 1, locking device 20 prevents opening of movable
door 10 along its door channel or track 10a (FIG. 3) by engagement
of bar 21 at one end with the door edge 12 of door 14 and at its
other end with frame side or jamb 13. Locking device 20 in its
disengaged position, shown in FIG. 2, allows free movement of the
sliding door 10 along track 10a. Further, in its disengaged or open
position, bar 21 is held in spaced relationship above track 10a by
the spring-lock hinge assemblies 22 without any support in addition
to the hinges.
As can be seen particularly in FIG. 3, when device 20 is in the
open position, any desired spaced relation between track 10a and
bar 21 may be utilized as long as bar 21 is in contact with edge
12. Further, as seen in FIG. 3, bar 21 is secured in its engaged or
closed position by not only gravity but also by spring-lock hinge
assemblies 22 which, because of distortion of clip 26, act to push
bar 21 into static door 11. Because hinge assemblies 22 force bar
21 into static door 11, vibration of sliding door 10, door track
10a or other adjacent wall sections will not disengage the closure
device.
OPERATION
When locking device 20 is in the disengaged or open position,
locking bar 21 is secured out of the plane formed by door edge 12
and jamb 13 by lock hinge assemblies 22. Specifically, in each
assembly 22, clip 26 attached to upper anchoring surface 23 along
flange 23a and to lower anchoring surface 24 in slot 24a secures
locking bar 21 in the open position by suspending lower anchoring
surface 24 attached thereto from upper anchor surface 23 (FIGS.
2-3) above jamb 12.
When it is desired to secure or lock the movable door 10, door 10
is moved into a closed position against frame side or jamb 16 (FIG.
1) and bar 21 attached to spring-lock hinge assemblies 22, is moved
downward into the plane formed by jamb 12 housing wall 13 (FIGS.
6-7). As bar 21 is moved downwardly, clip 26 which is secured
between upper wall 11 and bar 21 on the anchoring surfaces as
described above is distended or distorted over hinge portion 25 and
biases bar 21 inward against static door 15 securing movable door
10. When it is desired to move door 10, bar 21 is subsequently
upwardly rotated out of the plane formed by jamb 13 and closure
edge 12.
To readily adapt the locking bar 21 to closures of different sizes,
bar 21 may comprise any one of a number of suitable adjustment
means, e.g., telescoping elements, etc..
It will be understood that various changes in the details,
materials, steps, and arrangements of parts which have been herein
described and illustrated in order to explain the nature of the
invention, may be made by those skilled in the art within the
principle and the scope of the invention as expressed in the
appended claims.
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