U.S. patent number 3,830,535 [Application Number 05/345,954] was granted by the patent office on 1974-08-20 for closure.
This patent grant is currently assigned to Ajax Hardware Corporation. Invention is credited to Raymond N. Du Shane, Jr., George D. Read, F. Raymond Tintary.
United States Patent |
3,830,535 |
Read , et al. |
August 20, 1974 |
CLOSURE
Abstract
A closure for utilization with doors for vehicles or cabinets
and the like wherein a positive latching function is obtained by
unique design of the components making up the closure which is
practically maintenance free, easily and economically produced and
wherein a simple pulling movement unlatches the closure and permits
opening of a door with which it is used in a single movement.
Inventors: |
Read; George D. (Glendora,
CA), Tintary; F. Raymond (Covina, CA), Du Shane, Jr.;
Raymond N. (Fullerton, CA) |
Assignee: |
Ajax Hardware Corporation (City
of Industry, CA)
|
Family
ID: |
23357270 |
Appl.
No.: |
05/345,954 |
Filed: |
March 29, 1973 |
Current U.S.
Class: |
292/170;
292/336.3; 292/DIG.38; 292/337 |
Current CPC
Class: |
E05C
1/14 (20130101); Y10S 292/38 (20130101); Y10T
292/62 (20150401); Y10T 292/0976 (20150401); Y10T
292/57 (20150401) |
Current International
Class: |
E05C
1/14 (20060101); E05C 1/00 (20060101); E05c
001/14 () |
Field of
Search: |
;292/57,60,145,170,174,175,251.5,337,350,DIG.38,DIG.53 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
86,785 |
|
Jul 1936 |
|
SW |
|
153,680 |
|
Mar 1956 |
|
SW |
|
Primary Examiner: Craig, Jr.; Albert G.
Attorney, Agent or Firm: Mahoney, Schick & Cislo
Claims
We claim:
1. A closure comprising the combination of a housing member having
spaced, opposed walls forming a guide path and being provided with
mounting means comprising tab portion cut outs of said spaced,
opposed walls to affix said closure; a latch member captively
disposed within said housing for linear movement along said guide
path and having one end adapted to engage a cooperating strike and
having a V-like shaped and curvilinear cam surface portion, said
one end of said latch member normally projecting exteriorly of said
housing and being quadrant-shaped; a pull member having an actuator
portion disposed adjacent said cam surface portion and being
adapted for movement normal to said guide path; and resilient means
to urge said latch member to a terminus of said guide path, said
cam surface portion coacting with said actuator portion of said
pull member to retract said latch member inwardly of said housing
member.
2. A closure in accordance with claim 1 wherein said housing member
has lateral walls coacting with said spaced, opposed walls to form
said guide path.
3. A closure in accordance with claim 2 wherein said housing member
has an open end and said one end of said latch member projects
therethrough.
4. A closure in accordance with claim 3 wherein said latch member,
in cooperation with said housing member, forms a resilient means
retaining area.
5. A closure in accordance with claim 4 wherein said resilient
means retaining area is formed between an end wall of said housing
member and an intermediate wall of said latch member.
6. A closure in accordance with claim 5 wherein said resilient
means is a compression spring.
7. A closure in accordance with claim 6 wherein said housing member
is formed of metal and said latch member is plastic.
8. A closure in accordance with claim 1 wherein said pull member
has a stem portion extending through said latch member and a wall
of said housing.
9. A closure in accordance with claim 8 wherein said housing member
has at least a pair of opposed walls forming said guide path and
have opposed slots forming a track guide for the movement of said
pull member.
10. A closure in accordance with claim 9 wherein the end of said
pull member adjacent said stem is T-shaped and the ends of the
crossbar of the T are disposed in said opposed slots.
11. A closure in accordance with claim 10 wherein said pull member
is cooperatively guided in said housing by said opposed slots.
12. A closure in accordance with claim 11 wherein said housing is
integrally formed.
13. A closure in accordance with claim 12 wherein said latch member
is prevented from movement outward of said housing member by said
pull member.
14. A closure in accordance with claim 13 wherein said housing
member is metal and said latch member is plastic.
15. A closure in accordance with claim 14 wherein a spring means is
positioned within said housing to act against said latch member and
an end wall of said housing.
16. A closure in accordance with claim 15 wherein the terminus of
said stem is threaded to receive a knob or pull member whereby said
pull member may be moved normal to the path of travel of said latch
member.
Description
BACKGROUND OF THE INVENTION
This invention pertains to a closure of the type that may be used
in recreational vehicles, stationary cabinet doors or any
application where it is desired to have a positive acting latch
which is easily unlatched by a single manipulative movement which
also permits opening of a door or the like with which the closure
is used.
While the prior art has suggested many different types of closures
to be utilized with doors (of a myriad of applications) whether for
the doors of vehicles, doors of containers or doors of cabinets,
for the most part these latches have involved sophisticated and
complicated mechanisms which are difficult to maintain in the
operable state, are expensive to produce or require an additional
movement to open a door with which the closure is utilized.
With the hereindescribed invention, an economically manufactured
and readily maintainable positive latch closure is made possible
which permits unlatching and opening of a door with which the
closure of the invention is utilized in a single movement.
Additionally, because of the unique configuration and cooperation
of the limited number of parts making up the closure of the
invention, operability of the closure over sustained working
conditions is improved over prior art devices.
OBJECTS AND SUMMARY OF THE INVENTION
It is an object of the invention to provide a closure which may be
utilized with doors of any type.
It is another object of the invention to provide a closure which
effects positive latching of a door with which the closure is
utilized.
It is still another object of the invention to provide a positive
latching closure which is easily unlatched and the door opened with
which the closure is used in but a single movement.
It is still another and further object of the invention to provide
a closure which is economically manufactured comprising mechanics
of operation which will give long usage.
It is still another and further object of the invention to provide
a closure wherein a one piece housing member is formed of metal and
a latch member is captively disposed therein for inward and outward
movement by a simple cam and actuator arrangement.
It is still another and further object of the invention to provide
a closure having a housing member with a latch member disposed
therein wherein a pull member moves normal to the path of travel of
the latch member.
It is still another and still further object of the invention to
provide a closure wherein the latch member has a cam surface which
is engaged by an actuator member comprising a pull knob which moves
the latch member into the latching or unlatching position.
It is still another and further object of the invention to provide
a closure wherein a latch member is captively received within a
housing and has resilient means biasing the latch member into the
latching position and wherein the latch member is provided with a
cam surface which is acted upon by an actuator to move the latch
member into the latched position, return thereof being caused by
said biasing means.
Other objects of the invention will become apparent from the
figures of drawing and the description herein.
Basically, the invention is directed to a closure comprising the
combination of a housing member forming a guide path and having a
latch member captively disposed within the housing for linear
movement along the guide path and having one end adapted to engage
a cooperating catch.
The latch member has a cam surface portion which is acted against
by a pull member having an actuator portion disposed adjacent the
cam surface portion wherein the pull member is adapted for movement
normal to the guide path. Resilient means is provided to urge the
latch member to a terminus of the guide path or locked position and
movement of the actuator portion of the pull member will position
the latch member in the unlatching position.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a top view of a closure of this invention showing its use
with a cabinet door or the like;
FIG. 2 is a view taken along the line 2--2 of FIG. 1;
FIG. 3 is a view taken along the line 3--3 of FIG. 2;
FIG. 4 is a view similar to that shown in FIG. 1 but illustrating
the closure in the unlatched or unlocked position; and
FIG. 5 is an exploded view showing the components of the closure of
this invention.
DESCRIPTION OF THE BEST EMBODIMENTS CONTEMPLATED:
Referring to the drawings wherein like numerals of reference refer
to like elements throughout an exemplary embodiment of a closure of
this invention is illustrated. The closure 2 in this instance is
illustrated in FIGS. 1 and 4 in the latched or locked position and
the unlatched or open position respectively. Basically, the closure
2 may be secured to a door 4 (in this instance a wooden door
comprising a cabinet) wherein the style 6 of the cabinet has strike
member 8 of the usual type and forming no part of this
invention.
The cabinet door 4 is provided with through bore 10 through which
the actuator portion of the closure may project and to which the
knob 12 may be affixed.
The closure 2 comprises a housing member 14 having opposed walls 16
and 18 from which cutout tabs 20 have been punched and brought out
of the plane formed by the walls 14 and 18 and provided with
apertures 22 by which means the closure 2 may be secured to the
door 4. It will be noted that the opposed walls 16 and 18 are
provided with opposed and aligned slots 24 and 26 in order to
receive an actuator member as will be later described.
As seen in FIG. 5, the housing member 14 also includes a side or
lateral wall 28 and an opposite discontinuous wall 30 which, in
conjunction with wall portion 32 (FIG. 3) forms an open front guide
path for latch member 34. In this instance, the housing member 14
is formed of metal and the wall portions thereof are integral with
one another, the housing 14 being made in accordance with known and
recognized metal fabricating techniques. Obviously, housing member
14 may be made of other materials and in accordance with other
manufacturing techniques.
The latch member 34 is captively disposed within housing member 14
and has a latch portion 36 which is quadrant-shaped in
configuration (FIG. 1) and is provided with an intermediate cam
surface portion 38 of V-like shape, curvilinear configuration. In
this instance, the latch member 34 is of molded plastic having the
usual cutout portions to economize on material and to lend light
weight to the closure 2. A bottom cutout portion 40 is provided so
that upon assembly, a resilient means or coil spring 42 is
captively associated between the cutout portion 40 of latch member
34 and the partial rear wall 32 of housing member 14.
It will be noted that upon disposition of coil spring 42 within
housing member 14, the latch member 34 is reciprocally movable
inward and outward of housing 14 as seen in FIGS. 4 and 1
respectively. The latch member 34 is captively associated within
the confines of housing member 14 by means that will now be
described.
The wall 28 of housing member 14 is provided with through hole 44
of a diameter large enough to receive an extending portion of
actuator 46. Actuator 46 has a stem portion 48, the terminus 50 of
which is threaded so as to receive the knob 12 in threaded
relationship therewith. (Obviously other means of affixing the knob
12 to actuator 46 may be used).
Actuator 46 has an upper portion 52,T-shaped in configuration,
having projections 54 of the T which are received by opposed slots
24 and 26, the slots forming a track for movement of actuator
46.
It will be noted that an upper portion of the actuator 46 and more
specifically, the portion 56, is provided with a curved surface so
as to ride smoothly within the cam surface 38 provided in latch
member 34. Disposition of actuator 46 through the opening 44 and
alignment of the tabs 54 in the slots 24 and 18 retain actuator 46
in operable relationship with respect to latch member 34
particularly when the knob 12 is secured to the threaded end 50 of
actuator 46.
In operation of the device, referring to FIGS. 1 and 4, it will be
noted that the housing member 14 provides a guide path within which
the latch member 34 is free to move. The spring 42 normally biases
the latch member 34 into the latching position as seen in FIG. 1
thereby engaging the catch portion 36 of latch member 34 with the
strike 8 on the style 6 of the cabinet.
However, upon pulling or movement of the actuator 46 (as by means
of grasping the knob 12), in a direction normal to the path of
travel of latch member 34, the actuator 46 engages the cam surface
38 thereby causing retraction of latch member 34 and disengagement
of the catch portion 36 thereof with the catch 8 located on the
style 6 of the cabinet, as seen in FIG. 4. Thus, one simple
movement of the actuator 46 unlatches the closure 2 and moves the
door 4 into the open position.
Movement of the actuator 46, as seen in FIG. 4, compresses coil
spring 42 and causes the end of the latch member 34 opposite the
catch portion 36 to move exteriorly of the housing member 14.
In the illustrated closure 2, the actuator 46 is of metal while
latch member 34, is of molded plastic construction but of course
other materials and means of fabrication are possible.
Additionally, while closure 2 has been shown in a field of use
comprising cabinets and the like, it should be understood that the
closure 2 may be used with any type of doors, for example, those
found on electronic consules and the like, and that the scope of
the invention is not to be limited.
Indeed, while certain structural and design relationships have been
shown for the closure of this invention, those of ordinary skill in
the art will ascertain that various modifications and changes are
indeed possible but none of which will depart from the essence and
scope of the invention as defined in the appended claims. For
example, the biasing means may be integral with the latch member
and may be a leaf as opposed to a compression spring. Other
modifications will suggest themselves.
* * * * *