U.S. patent number 3,662,429 [Application Number 05/074,712] was granted by the patent office on 1972-05-16 for door pivot assembly.
This patent grant is currently assigned to Lawrence Brothers, Inc.. Invention is credited to Larry K. Johnson, Delmar D. McNinch.
United States Patent |
3,662,429 |
Johnson , et al. |
May 16, 1972 |
DOOR PIVOT ASSEMBLY
Abstract
The present invention relates generally to pivot assemblies for
swinging doors, and more particularly to improvements in pivot
assemblies for use with door members, the pivoted vertical edge of
which, when the door is in closed position, is in substantial
abutting relation with a vertical door frame. An embodiment of the
invention disclosed herein includes a crank arm, a link member
having one end pivotally connected with the crank arm, mounting
means for supporting the crank arm and link member upon a
horizontal door frame member. Fixed pivot means is associated with
the mounting means and is connected with the opposite extremity of
the link. Crank actuating means attachable to the corner of the
door member is coupled with the crank member whereby when the door
member swings about the crank axis in a given direction the
vertical door edge will move away from the door frame.
Inventors: |
Johnson; Larry K. (Lyndon,
IL), McNinch; Delmar D. (Rock Falls, IL) |
Assignee: |
Lawrence Brothers, Inc.
(Sterling, IL)
|
Family
ID: |
22121207 |
Appl.
No.: |
05/074,712 |
Filed: |
September 23, 1970 |
Current U.S.
Class: |
16/357;
49/381 |
Current CPC
Class: |
E05D
3/022 (20130101); E05D 7/081 (20130101); E05Y
2900/132 (20130101); E05D 15/54 (20130101); Y10T
16/544 (20150115) |
Current International
Class: |
E05D
3/00 (20060101); E05d 007/08 () |
Field of
Search: |
;16/151,132,131,130
;49/248,398,381 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Gay; Bobby R.
Assistant Examiner: Troutman; Doris L.
Claims
We claim:
1. A pivot assembly for a door member, the pivoted vertical edge of
which, when the door member is in closed position, is in
substantial abutting relation with a vertical door frame member,
said assembly including crank means, link means having one
extremity pivotally connected with the extremity of said crank
means, mounting means for supporting said crank and link means upon
a horizontal door frame member, fixed pivot means associated with
said mounting means, the opposite extremity of said link means
being pivotally coupled with said fixed pivot means, crank
actuating means attachable to the corner portion of a door member,
and means coupling said crank and crank actuating means whereby
when an associated door member swings about the crank axis in a
given direction, said crank and link means coact to move the
vertical door edge away from the door frame.
2. A pivot assembly for a door member as set forth in claim 1,
wherein the crank means is shiftable laterally with respect to the
crank axis in response to swinging of the door member.
3. A pivot assembly for a door member as set forth in claim 1,
wherein means for coupling said crank means and crank actuating
means includes a shank member extending into a complementary
aperture in the crank actuating means.
4. A pivot assembly for a door member as set forth in claim 1,
wherein means for coupling the crank means and crank actuating
means includes a non-circular shank member extending from the crank
member into a complementary non-circular aperture in the crank
actuating means.
5. A pivot assembly for a door member as set forth in claim 1,
wherein the crank actuating means includes a plate member adapted
for attachment to the horizontal edge of a door member, and the
means for coupling said crank actuating plate member with said
crank means includes a shank member extending from said crank means
into a complementary aperture in said plate member.
6. A pivot assembly for a door member as set forth in claim 1,
wherein the mounting means includes one section for accommodating
said crank and link means and another section provided with a
guideway for guiding lateral movement of said crank means.
7. A pivot assembly for a door member as set forth in claim 6,
wherein the two sections of the mounting means are in the nature of
superimposed plate members secured together as a unit.
8. A pivot assembly for a door member, the pivoted vertical edge of
which, when the door member is in closed position, is in
substantial abutting relation with a vertical door frame member,
said assembly including cooperative crank and link means, mounting
means for supporting said crank and link means upon a horizontal
door frame member, pivot means for said link means associated with
said mounting means, crank actuating means attachable to the corner
portion of a door member, and means coupling said crank and link
means with said crank actuating means whereby when an associated
door member swings about the crank axis in a given direction, said
crank and link means coact to move the vertical door edge away from
the door frame.
9. A pivot assembly for a door member as set forth in claim 8,
wherein the means coupling the crank and link means with the crank
actuating means includes a crank shaft engageable with said crank
actuating means.
Description
SUMMARY OF THE INVENTION
There are instances in which it is very desirable to have the
vertical edge of a swingable door, when in closed position, located
in substantial abutment with the adjacent door frame member. This
abutting relationship of the hinged edge of a door with the
adjacent vertical door frame has a very practical application where
it is desirable to reduce to a minimum the obviousness of the
presence of a door in a paneled wall. In such installations it is
not uncommon for the plane of the door face to be coincident with
the plane of the wall surface, and it is important to reduce to a
minimum the space between the edges of the door with the
complementary adjacent surfaces of the door frame. If the hinged
edge of a conventional door is in substantial abutting relation
with the adjacent vertical door frame, a conventional door hinge
cannot be used without exposing a portion of the hinge
hardware.
Standard door pivot devices, as distinguished from hinges, have
heretofore been available which possess the inherent disadvantage
of necessitating the provision of considerable space between the
vertical door frame and the pivoted edge of the door member in
order to afford proper clearance. Another standard practice has
been to round or bevel the vertical corners of the pivoted door
edge to avoid interference of these corners with the door frame.
Obviously, neither of these standard type installations permit
substantial abutting relation of the flat pivoted door edge with
the door frame. It is, therefore, an important object of the
present invention to provide door pivot assemblies of economical
and practical design which will avoid the aforesaid and other
disadvantages and inconveniences.
More specifically the present invention contemplates a door pivot
assembly of the type referred to above wherein a novel, relatively
simple crank and link arrangement composed of relatively few
elements may be employed to effect shifting of a door member as an
incident to swinging movement thereof.
It is also an object of the present invention to provide an
improved, practical door pivot assembly of the type set forth above
which will be completely hidden from view after installation.
BRIEF DESCRIPTION OF THE DRAWINGS
The foregoing and other objects and advantages will be more
apparent from the following detailed description when considered in
connection with the accompanying drawings wherein:
FIG. 1 is a perspective view of a swingable door member equipped
with applicant's novel door pivot assembly at the upper and lower
corners thereof;
FIG. 2 is an enlarged perspective, fragmentary view of the lower
left hand corner of the door member disclosed in FIG. 1, with the
door member shown elevated from the horizontal door frame for the
purpose of more clearly illustrating the structural features of the
pivot assembly;
FIG. 3 is a fragmentary, vertical, sectional view taken
substantially along the line 3--3 of FIG. 2, with the door member
lowered to its normal operative position;
FIG. 4 is a perspective exploded view of the lower mounting plate
and the link and crank members accommodated thereby;
FIG. 5 is a plan view of the lower mounting plate and the link and
crank elements associated therewith, the closed position of the
door member being indicated by dot and dash lines;
FIG. 6 is a plan view similar to FIG. 5, showing the successive
positions of the door member by dot and dash lines as it is swung
in a counterclockwise direction until the link and crank members
occupy the disclosed relative positions;
FIG. 7 is a view similar to FIGS. 5 and 6, disclosing the door
member by dot and dash lines after said member has been moved
through 90.degree. from the position shown in FIG. 5; and,
FIG. 8 is a view disclosing the link and crank members in an
initial position which will permit swinging of the door member in a
clockwise direction through 90.degree. as indicated by the
directional arrow.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawings more in detail wherein like numerals
have been employed to designate similar parts throughout the
various figures, it will be seen that one embodiment of a door
pivot assembly of the type contemplated by the present invention is
designated generally by the numeral 10, FIGS. 1 and 3. The assembly
10 includes a mounting structure designated generally by the
numeral 12 adapted to be secured to or nested within the horizontal
door frame member 14. The assembly 10 also includes a crank
actuator device designated generally by the numeral 16 which has a
vertical plate section 18 adapted to be secured by means of screw
fasteners 20 to the pivoted edge of a door member 22. The crank
actuator device 16 also includes a horizontal plate section 24
which, as shown in FIG. 3, extends along the bottom corner of the
door member 22. The device 16 is in the nature of an angle bracket
which may be secured both to the lower corner of the door as well
as to the upper corner thereof as shown in FIG. 1. For purposes of
illustration it will suffice to describe the door pivot assembly
for the lower corner of the door 22.
The lower edge of the door 22 is provided with a recess 26 for
accommodating a multi-sided crank shaft 28 extending upwardly from
a crank member 30. The free extremity of the crank 30 is pivotally
coupled at 32 with one extremity of a link member 34. The opposite
extremity of the link member 34 is pivotally coupled with a pin
extending between a pair of lower and upper mounting place members
38 and 40 respectively. Particular attention is directed to the
fact that the crank member 30 and the link member 34 are housed
within a recess 42 provided in the upper side of the lower mounting
plate member 38. Suitable screws 44 serve to secure the upper
mounting plate member 40 to the lower mounting plate member 38.
Additional screw members 46 extend through both of the plate
members 38 and 40 and into the horizontal door frame 14. The door
frame 14 may be suitably recessed to accommodate the mounting
structure or unit 12 as clearly shown in FIG. 3, with the upper
surface of the plate member 40 positioned in a plane substantially
coincident with the plane of the upper surface of the horizontal
door frame member 14. It will also be noted that the horizontal
plate section 24 of the crank actuating device 16 rests upon a
shoulder bearing 48 provided by the crank shaft 28. An aperture 50
in the actuating plate 24 serves to accommodate the crank shaft 28
and conforms in non-circular cross-section with that of the shaft
28. Thus when the door 22 experiences swinging movement it will
impart rotation to the shank 28.
The mounting plate 40 is provided with a longitudinal slot or
recess 52 for guiding lateral movement of the shank 28 when
rotation is imparted thereto. It will be apparent from the
foregoing description that as the door member 22 swings in a
counterclockwise direction as indicated by the arrow in FIG. 6,
from the closed position shown in FIG. 5, rotation will also be
imparted to the crank shaft 28. This will cause the shaft to move
from the position shown in FIG. 5, to the position shown in FIG. 6.
During this period of rotation the link member 34 cooperates with
the crank 30 in forcing the crank shaft 28, and consequently the
door member 22 away from the vertical door frame member 54. Thus
the pivoted edge of the door 22 immediately shifts away from the
adjacent vertical door frame member 54 as rotation is imparted to
the crank shaft 28. As the link 34 and crank 30 move from the
position shown in FIG. 6, to the position shown in FIG. 7, the door
member will have been swung through 90.degree. from its original
closed position shown in FIG. 5. The peripheral walls defining the
recess 42 limit the extent to which the link and crank arm may be
shifted, namely: from the position shown in FIG. 5, to the position
shown in FIG. 7.
In applications where it is required that the door member 22 swing
in the opposite direction from that described above, it is only
necessary to initially position the crank 30 and link 34 as shown
in FIG. 8. From this position the door 22 may be swung in a
clockwise direction from the closed position shown in FIG. 8,
through 90.degree. as previously explained.
From the foregoing it will be apparent that the present invention
contemplates the provision of a unique and very simple, yet sturdy,
crank arm and link pin arrangement which make it possible to
produce pivot assemblies at minimum cost. The crank actuating
bracket member as well as the structure for accommodating the crank
and link members may be associated with the door and horizontal
frame members with the exercise of minimum skill and effort.
* * * * *