Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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Protracting blocker for doors equipped with a closer piston
BACKGROUND OF THE INVENTION
I. Field of the Invention
[1] The present invention relates generally to to door blocking mechanisms but
more particularly
to a protracting blocker for doors equipped with a closer piston.
2. Description of Related Art
121 Keeping open a door equipped with a closer piston can be quite annoying.
In some instances
those doors are equipped with a flip down friction stopper but when they;re
not, one has to
resolve to makeshift methods such as jamming a piece of wood between the door
and its casing,
which can result in damage to one or both parts. In other instances, one tries
to see if the piston
model makes it easy to disable it. Essentially, there is no one universal and
quick device to solve
this problem.
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BRIEF SUMMARY OF THE INVENTION
[3] It is a main advantage of this invention to provide for a protracting
blocker for doors equipped
with a closer piston.
[4] In order to do so, the invention comprises an angularly variable device
for use on a door having
a closer piston with a piston arm wherein the angularly variable device is a
protracting blocker
comprised of a first section and a second section. Each section comprises a
wall from which
extends at least one tab extending perpendicularly therefrom. From the wall
extends generally
perpendicularly at least one but preferably a plurality of tabs so that the at
least one tab on each
of the first section and the second section rests on top of the piston arm. A
retainer presses
against an elbow joint forming part of the piston arm so as to firmly press
the wall against the
piston arm so that one side of the blocker is pressed against one side of the
piston arm while the
retainer presses against the opposite side of the piston arm so as to provide
a secure installation
of the blocker on the piston arm. A lever pivoted into a horizontal position
presses the two
sections together so that they remain in a given fixed position relative to
each other so as to
immobilize the piston arm in a given position.
[5] The first section and the second section are rotationally connected at an
axis point through
which passes a rod which has a means for biasing at its distal end, and has
the lever pivotally
attached at its proximal end.
[6] When the lever presses against the first section, it pushes the first
section against the second
section.
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[7] A first and a second sprocket from the first section meshes with a third
and fourth sprocket
located on the second section by way of sets of teeth forming part of the
first, second, third and
fourth sprockets so as to immobilize the first section and the second section.
[8] The rod holds the first section and the second section together by way of
attaching with the
lever by way of a pin.
[9] A bracket holds the retainer and is pivotally attached on top of the first
section at the axis point
by way of the rod passing through a rod hole.
[10] The bracket has an opening made through the bracket so that a nipple
extending
perpendicularly from the retainer can be inserted therein to hold the retainer
in place.
[11] The second section has a bushing acting as a pivot point for the first
section and the second
section.
[12] Each of the first section and a second section is shaped like a "C" and
comprises a top
member, a bottom member and the wall to join the top member and bottom member.
[13] The protracting door blocker works in combination with a door having and
a closer piston
having a piston arm.
[14] The foregoing and other objects, features, and advantages of this
invention will become
more readily apparent from the following detailed description of a preferred
embodiment with
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reference to the accompanying drawings, wherein the preferred embodiment of
the invention is
shown and described, by way of examples. As will be realized, the invention is
capable of other
and different embodiment, and its several details are capable of modifications
in various
obvious respects, all without departing from the invention. Accordingly, the
drawings and
description are to be regarded as illustrative in nature, and not as
restrictive.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[15] Other features and advantages of the present invention will become
apparent when the
following detailed description is read in conjunction with the accompanying
drawings, in which:
[16] FIG. 1 is a top view of the invention in context of use, according to an
embodiment of the
present invention.
[17] FIG. 2 is an isometric view, of the protracting blocker according to an
embodiment of the
present invention in its protracted configuration.
[18] FIGS. 3AB are a top and a cutaway side view, respectively, according to
an embodiment of
the present invention.
[19] FIGS. 4A-D are front views of the invention in open (protracted) and
closed (retracted)
positions and with the lever disengaging and engaging the sprockets,
respectively.
[20] FIG. 5 is an exploded view, according to an embodiment of the present
invention.
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[21] FIGS. 6A-B are side views of the first section and the second section,
respectively,
according to an embodiment of the present invention.
[22] FIGS. 7A-C Top, side and front views, respectively, of the bracket,
according to an
embodiment of the present invention.
[23] FIGS. 8A-C Top, front, and side views, respectively, of the retainer,
according to an
embodiment of the present invention.
[24] FIG. 9 is an isometric view, of the protracting blocker according to an
embodiment of the
present invention in its retracted configuration.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[25] The following description is provided to enable any person skilled in the
art to make and use
the invention and sets forth the best modes contemplated by the inventor of
carrying out his
invention. Various modifications, however, will remain readily apparent to
those skilled in the
art, since the general principles of the present invention have been defined
herein to specifically
provide a pulling tool for a human-powered wheeled vehicle.
[26] Referring now to any of figs 1 through 3, a protracting blocker (10)
for a door (12) is
installed over a piston arm (14) of a closer piston (16). The protracting
blocker (10) is
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comprised of a first and a second section (18, 18') wherein each of the
sections (18, 18') is
shaped like a "C" and comprises a top member (19), a bottom member (21) and a
wall (20) to
join the top and bottom members (19, 21). From the wall (20) extends generally
perpendicularly
at least one but preferably a plurality of tabs (22) so that the at least one
tab (22) on each
sections (18, 18') can rest on top of the piston arm (14). A retainer (24)
presses against an elbow
joint (26) forming part of the arm (14) so as to firmly press the wall (20)
against the piston arm
(14) so that one side of the blocker (10) is pressed up against one side of
the piston arm (14)
while the retainer (24) presses up against the opposite side of the piston arm
(14). The piston
(16) and piston arm (14) are well known in the art and need not be further
discussed here.
Suffice to say that the piston arm (14), much like a human arm, consists in an
upper arm, an
elbow, and a forearm. Here, the elbow joint (26) acts like a human elbow by
bending and is
hidden by a bracket (36) in FIG. 1. There is no need to explicitly show it
because of general
understanding of what the piston arm (14) is.
[27] In order to block the arm (14) from moving, a lever (28) is actuated,
which presses the two
sections (18, 18') together so that they become immobilized and as such,
immobilize the arm
(14) as well.
[28] The two sections (18, 18') are rotationally connected at an axis point
(30) through which
passes a rod (33) which has a means for biasing (34) at its distal end, and
has the lever (28)
pivotally attached at its proximal end. When the lever (28) presses against
the first section (18)
it pushes it against the second section (18'). More particularly, a first and
a second sprocket (32,
32') meshes with a third and fourth sprocket (32", 32") located on the second
section (18') by
way of sets of teeth (34) forming part of the sprockets (32, 32', 32", 32").
This effectively
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immobilizes the two sections (18, 18'). The second section (18') has a bushing
(35) which is the
actual pivot point of the two sections (18, 18'), the rod (33) serving as a
retainer for both
sections (18, 18') as well as interacting with the lever (28) to create the
blocking. Also, a bracket
(36) for holding the triangular member (24) is pivotally attached on top of
the first section (18)
at the axis point by way of the rod (33) passing through a rod hole (31).
[29] Additional components include an opening (38) made through the bracket
(36) so that a
nipple (40) extending perpendicularly from the retainer (24) can be inserted
therein to hold the
retainer (24) in place. A pin (42) connects the lever (28) to the rod (33).
[30] Although the invention has been described in considerable detail in
language specific to
structural features, it is to be understood that the invention defined in the
appended claims is not
necessarily limited to the specific features described. Rather, the specific
features are disclosed
as exemplary preferred forms of implementing the claimed invention. Stated
otherwise, it is to
be understood that the phraseology and terminology employed herein, as well as
the abstract,
are for the purpose of description and should not be regarded as limiting.
Therefore, while
exemplary illustrative embodiments of the invention have been described,
numerous variations
and alternative embodiments will occur to those skilled in the art. Such
variations and alternate
embodiments are contemplated, and can be made without departing from the
spirit and scope of
the invention.
[31] It should further be noted that throughout the entire disclosure, the
labels such as left, right,
front, back, top, bottom, forward, reverse, clockwise, counter clockwise, up,
down, or other
similar terms such as upper, lower, aft, fore, vertical, horizontal, oblique,
proximal, distal,
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parallel, perpendicular, transverse, longitudinal, etc. have been used for
convenience purposes
only and are not intended to imply any particular fixed direction or
orientation. Instead, they are
used to reflect relative locations and/or directions/orientations between
various portions of an
object.
1321 In addition, reference to "first," "second," "third," and etc. members
throughout the
disclosure (and in particular, claims) are not used to show a serial or
numerical limitation but
instead are used to distinguish or identify the various members of the group.
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