U.S. patent number 3,662,493 [Application Number 05/052,854] was granted by the patent office on 1972-05-16 for door pivot device.
This patent grant is currently assigned to Lawrence Brothers, Inc.. Invention is credited to Robert E. Foltz.
United States Patent |
3,662,493 |
Foltz |
May 16, 1972 |
DOOR PIVOT DEVICE
Abstract
The present invention relates generally to double acting pivot
devices for doors mounted between top and bottom pivots aNd more
particularly to improvements in vertically adjustable bottom pivot
devices. One embodiment of the invention disclosed herein comprises
a bracket member having a vertical section for the attachment to a
door jamb, and a lateral or horizontal section for supporting the
weight of a door member. A second bracket means is adapted for
attachment to the bottom edge of a door in superimposed relation
with respect to the horizontal section of the first bracket member.
Interposed between these superimposed bracket sections is an
antifriction bearing device of improved practical construction
which may be vertically adjusted without the necessity of first
separating the door member from its supporting pivot.
Inventors: |
Foltz; Robert E. (Sterling,
IL) |
Assignee: |
Lawrence Brothers, Inc.
(Sterling, IL)
|
Family
ID: |
21980329 |
Appl.
No.: |
05/052,854 |
Filed: |
July 7, 1970 |
Current U.S.
Class: |
49/388; 16/275;
16/244 |
Current CPC
Class: |
E05D
7/081 (20130101); E05D 7/0027 (20130101); E05D
11/04 (20130101); Y10T 16/5325 (20150115); E05Y
2900/132 (20130101); Y10T 16/5377 (20150115) |
Current International
Class: |
E05D
7/08 (20060101); E05D 7/00 (20060101); E05D
11/04 (20060101); E05D 11/00 (20060101); E05d
007/08 () |
Field of
Search: |
;49/388,386
;16/134,168,151,185V |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Downey; Kenneth
Claims
I claim:
1. A vertically adjustable bottom pivot device for swingable doors
including first bracket means having a section for attachment to a
door jamb, a section extending laterally therefrom for positioning
below the bottom of a door for supporting the weight of a door,
second bracket means for attachment to the bottom edge of a door in
superimposed spaced relation with respect to the door supporting
section of said first bracket means leaving access space
therebetween and including a recess for receiving a thrust bearing,
a vertically disposed screw member supported at one extremity by
said first bracket means and traversing the access space and said
recess, and an internally threaded thrust bearing member associated
with said screw member intermediate the end thereof and readily
accessible in the access space for adjustment, said screw member
and internally threaded bearing member thereon being relatively
rotatable for vertical adjustment, and a second thrust bearing
member engaging said internally threaded bearing member and the
recess in said second bracket means, said bearing member presenting
a pivot door support with the screw member traversing both bearing
members and terminating at a position proximate to the bottom edge
of the door and within said recess.
2. A vertically adjustable bottom pivot device for swingable doors
as set forth in claim 1, wherein means is provided for securing the
internally threaded thrust bearing member and associated screw
member in a relatively fixed position.
3. A vertically adjustable bottom pivot device for swingable doors
as set forth in claim 1, wherein the vertically disposed screw
element is secured at one extremity to bracket means and the
internally threaded thrust member is rotatable with respect to said
screw member.
4. A vertically adjustable bottom pivot device for swingable doors
as set forth in claim 1, wherein the first bracket means is
L-shaped, with the vertical arm thereof for attachment to a door
jamb, and the horizontal arm being adapted to support the weight of
a door member, and the second bracket means is in the form of a
plate adapted for attachment in the bottom edge of a door member
with a portion of said plate member disposed in superimposed
vertically spaced relation with a portion of the horizontal arm of
the first bracket means leaving the access space.
5. A vertically adjustable bottom pivot device as claimed in claim
1, wherein the screw member is elongate to extend into a door
recess.
Description
SUMMARY OF THE INVENTION
One of the problems incident to the installation of double acting
pivoted door members is that of vertically adjusting the door
member to fit properly within the door opening, and particularly to
adjust the bottom of the door to provide required floor clearance.
Bottom pivot devices have a very practical application to pivoted
door members of the double acting type. In order to effect vertical
adjustment of such doors by the use of certain prior pivot devices
heretofore available, it is necessary that the door be detached
from the top and bottom pivot thereof to effect such adjustment. It
is one of the important objects of the present invention to provide
an improved practical pivot device for supporting the weight of a
door member which may be vertically adjusted while the door is
mounted thereon.
MOre specifically, the present invention contemplates a novel door
pivot structure, wherein an antifriction thrust bearing supporting
the weight of the door member may be vertically adjusted with the
door member remaining in its mounted position.
It is a further object of the present invention to facilitate the
ease with which pivot devices of the above-mentioned type may be
positively secured in any desired position of adjustment.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a perspective view of a double acting pivot type door
member mounted between top and bottom pivots and having at its
lower left corner, a pivot device of the type contemplated by the
present invention;
FIG. 2 is an enlarged perspective view of the adjustable pivot
device shown in the lower left hand corner of FIG. 1, the door
member being shown by dot and dash lines in order to reveal
structure otherwise obscured;
FIG. 3 is an enlarged perspective view of the adjustable door pivot
device of FIG. 2, with the door bracket or plate tilted upwardly,
more clearly, to expose the bearing arrangement;
FIG. 4 is a vertical, sectional view taken substantially along the
line 4--4 of FIG. 2, illustrating the structural details of the
adjustable pivot; and,
FIG. 5 is a fragmentary, vertical, sectional view taken
substantially along the line 5-- 5 of FIG. 4.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to the drawing more in detail wherein like numerals
have been employed to designate similar parts throughout the
various figures, it will be seen that an adjustable door pivot
device of the type contemplated by the present invention, is
designated generally by the numeral 10. In FIG. 1, the pivot device
10 is disclosed in association with the lower left hand corner of a
double acting pivot type door member 12. The pivot device 10
includes bracket means in the form of an "L" shaped bracket member
designated generally by the numeral 14. Bracket 14 comprises a
vertical section 16 and an integral laterally extending section 18,
extending horizontally from the lower margin of the section 16. The
vertical section, or arm 16, is suitably apertured to accommodate
screw members 20 for securing the bracket 14 in a recessed lower
portion of a door jamb 22.
The pivot device 10 also includes a bracket member or plate 24. The
bracket member 24 is apertured to accommodate fastener screws 26
for securing said member to the lower edge of the door member 12 in
partial superimposed spaced relation with the horizontal section 18
of the bracket 14. The bracket member 24 is also apertured to
accommodate an anti-friction or ball bearing unit 28. The ball
bearing unit 28 includes a conventional inner race 30, and outer
race 32 and ball members 34 housed between said race members. The
outer race member 32 is fitted within a companion recess 36
provided on the underside of the plate or bracket member 24. The
inner race member 30 provides an inner annular bearing surface
conforming with and resting upon a complementary peripheral bearing
surface of an internally threaded thrust or load supporting bearing
member 38.
The internally threaded bearing member 38 is supported by a
complementary threaded vertically disposed screw member 40. The
lower extremity of the screw member is provided with an integral
flange 42, the periphery of which is preferably serrated and has
forced fit within a recess 44 of the horizontal bracket member 18.
The periphery of the bearing member 38 is multi-sided to
accommodate the conventional turning tool or wrench (not shown). A
set screw 46 carried by the bearing member 38 serves to secure said
bearing member in the desired position of vertical adjustment upon
the screw member 40. The lower edge of the door member 12 is
provided with a recess or bore 48 to accommodate the upper
extremity of the screw member 40. A suitable upper or top door
pivot is provided at the upper left hand corner 50 of the door
member 12.
From the foregoing it will be apparent that the degree of elevation
of the door member 12 conforms with the vertical relation of the
bearing member 38 to the upper surface of the horizontal bracket
member 18. By loosening the set screw 46 and applying a turning
tool or wrench to the periphery of the bearing member 38 the door
member 12 may be raised or lowered as desired. With this
arrangement the vertical adjustment may be accomplished without
disengaging the door member from the bearing as must be done with
certain pivot devices heretofore available. Obviously the
antifriction bearing unit 28 is representative of only one type of
antifriction bearing which might be interposed between the upper
surface of the adjustable bearing member 38 and the underside of
the bracket member or plate 24. Applicant's pivot device is of
extremely simple construction and capable of being produced by
following conventional shop practice, thereby enabling the
production thereof at minimum cost. The ease with which the
vertical adjustment may be accomplished by following the teachings
of the present invention greatly enhances the commercial
acceptability thereof.
* * * * *