U.S. patent number 3,707,017 [Application Number 05/091,493] was granted by the patent office on 1972-12-26 for magnetic hinge.
This patent grant is currently assigned to Bjorksten Research Laboratories, Inc.. Invention is credited to Elmer G. Paquette.
United States Patent |
3,707,017 |
Paquette |
December 26, 1972 |
MAGNETIC HINGE
Abstract
Hinge for a magnetically held door, which can be very readily
detached and reversed. This hinge is based on a design where two
magnetically attracting rollers, rods or cylinders are placed in
parallel positions contacting each other lengthwise, one fixed, the
other one resting on a shelf attached to the lower end of the first
magnet or held perpendicular to said magnet so as to support the
weight of the second magnet and any door attached to it.
Inventors: |
Paquette; Elmer G. (Madison,
WI) |
Assignee: |
Bjorksten Research Laboratories,
Inc. (N/A)
|
Family
ID: |
22228070 |
Appl.
No.: |
05/091,493 |
Filed: |
November 20, 1970 |
Current U.S.
Class: |
16/385;
16/DIG.14 |
Current CPC
Class: |
E05D
7/02 (20130101); E05D 1/00 (20130101); Y10T
16/555 (20150115); Y10S 16/14 (20130101); E05Y
2900/132 (20130101); E05Y 2201/46 (20130101) |
Current International
Class: |
E05D
7/02 (20060101); E05D 7/00 (20060101); E05D
1/00 (20060101); E05d 007/02 () |
Field of
Search: |
;16/170,128 ;248/26M
;292/251.5M,163,168,169,128 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Gay; Bobby R.
Assistant Examiner: Troutman; Doris L.
Claims
Having thus disclosed my invention, I claim:
1. A magnetic door hinge, comprising vertical disposed two
cylinders magnetically attracting each other; and having parallel
longitudinal axes means for fastening these to hingeable members;
and a supporting member preventing longitudinal slippage between
said cylinders; one of the said cylinders being free to roll around
the other while being held thereto by magnetic force.
Description
PRIOR ART
Applicant is not aware of any previous work with magnetic door
hinges.
Conventional mechanical hinges are among the oldest products of
human technology. However, they all have the disadvantage of being
relatively fixed, so that they do not offer the flexibility
obtainable by the magnetic hinge. Attempts to develop magnetic
hinges have been made previously but have failed because of
insufficient attraction or stability.
OBJECTS OF THE INVENTION
An object of this invention is a magnetic hinge, which permits the
ready removal of a door, and its ready reverse detachments and/or
reversal.
Other objects may become apparent as the following detailed
description proceeds.
DRAWINGS
The invention is further described in connection with the drawings
of which FIG. 1 is a perspective view,
FIG. 2 and 3 side views of the two component parts.
DETAILED DESCRIPTION OF THE INVENTION
In accordance with my invention I prepare a hinge consisting of two
parts, which are separated from each other excepting by magnetic
force which holds them in the desired operative position.
The hinge consists of two substantially cylindrical magnets, 1 and
3, which have parallel longitudinal axes, when this is
substantially vertical, roller 3 rests on a preferably circular
supporting member 6, which is attached to a wall 5, by the
attachment plate 7, while the other magnetic roller or rod 1, which
is to be hinged against the first 3, is similarly attached by means
of a plate 2, to a hinged object such as a door 4. Roller or rod 1
rests on the supporting member 6 of the first hinge assembly, while
the magnetic force keeps the magnetic cylinders 1 and 3 in close
connection with each other.
When the door 4 is to be swung around its hinges, the roller, rod
or cylinder 1 rolls along the periphery of cylinder 3, so that the
door is free to swing as desired.
When it is desired to detach this door, it may be simply lifted out
or pulled out in defiance of the magnetic force, or, if this force
is so strong as not to permit detachment in this fashion, one
places a cardboard or plastic or nonmagnetic metal sheet between
the rolls in the bite between the magnetic cylinders 1 and 3 and
then turns the door so that the rollers become separated by the
said nonmagnetic object. They can then be parted with ease.
It is immaterial which of the two magnetic cylinders rests on the
supporting member 6. The construction shown in FIG. 1 can be
inverted, so that cylinder 1 is attached by means of plate 2 to the
wall 5, while the assembly 3, 6, 7 is attached to the door 4. In
this case the assemblys 6, 7 should be turned upside down, so that
the supporting plate 6 will be on the upper side, and rest on
cylinder 1, which then will be attached to the wall. In other
words, in this modification assemblies 3, 6, 7 and 1, 2 will change
place and assembly 3, 6, 7 will be turned upside down.
While this description has dealt with a specific embodiment, it is
apparent that the invention is applicable broadly to magnetic
hinges in which one cylindrical magnet rests on a plate, firmly
attached to the other cylinder or mechanically kept firmly beneath
it, while the other hinge represented by magnetic cylinder 1 is
free to move around cylinder 3 in rolling friction therewith when
the door is turned. FIGS. 2 and 3 show the two hinge assemblies
separated from each other, when the door is detached.
In this application I mean with "wall" any one side to which one of
the parts of the hinges is attached, and with "door" the movable or
swinging member to which the other magnetic cylinder is attached. I
am using the terms roller, rod or cylinder interchangeably.
If one of the cylinders is an extremely strong magnet, the other
does not need to be magnetized so long as it is magnetically
attractable. However, for maximum strength of the hinge it is
preferred that both cylinders or rollers be magnetized, and mounted
so that their opposite poles touch each other.
Thus, the invention comprises the concept of a magnetic hinge,
which comprises two rollers magnetically attracting each other,
means for fastening these which may include for example, nails,
pressbuttons, flanges, brackets, hookless fasteners of various
kinds, adhesive joints and the like; and a supporting member such
as a plate firmly fixed in a plane substantially perpendicular to
the plane of the longitudinal axes of the said rollers positioned
so as to two separable objects hingeably movable in relation to the
other, such as the position of the hinges in a door, a safe, a box,
or any other application where hinges may be used, in manner well
known in this ancient art.
* * * * *