Canadian Patents Database / Patent 2870583 Summary

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(12) Patent: (11) CA 2870583
(54) English Title: APPARATUS FOR TEACHING GAS PROPERTIES
(54) French Title: APPAREIL D'ENSEIGNEMENT DES PROPRIETES DES GAZ
(51) International Patent Classification (IPC):
  • G09B 23/12 (2006.01)
(72) Inventors (Country):
  • HATCHETTE, PAUL (Canada)
(73) Owners (Country):
  • HATCHETTE, SCOTT J. (Canada)
  • HATCHETTE, KIMBERLY A. (Canada)
  • HATCHETTE, SEAN J. (Canada)
(71) Applicants (Country):
  • HATCHETTE, PAUL (Canada)
(74) Agent: THERIAULT, MARIO D., P. ENG.
(45) Issued: 2016-01-12
(22) Filed Date: 2014-11-14
(41) Open to Public Inspection: 2015-07-27
Examination requested: 2014-11-14
(30) Availability of licence: N/A
(30) Language of filing: English

English Abstract


The apparatus has a transparent casing and an oblong toroidal shape in the
form of a bucket elevator. First and second vertical compartments are
separated by a partition and a clear cylindrical passage is formed around the
circumference of the apparatus. First and a second sheaves are mounted
above one another along the partition. A flexible loop is mounted around
the sheaves and a series of balloons attached to the flexible loop at spaced
intervals. The first compartment is opened to ambient air. The lower
region is filled with argon gas and the second compartment is filled with
helium gas. The balloons are filled with the helium gas such that the
balloons have buoyancy in the first compartment and a lack of buoyancy in
the second compartment, and the pool of argon gas impedes the diffusion
of ambient air in the second compartment.


French Abstract

L'appareil comporte un logement transparent et un appareil de forme oblongue toroïdale se présentant comme un élévateur à godets. Le premier et le deuxième compartiments verticaux sont séparés par une division et un passage cylindrique clair est formé autour de la périphérie de l'appareil. Un premier et un deuxième rouets sont installés l'un au-dessus de l'autre le long de la division. Une boucle flexible est installée autour des rouets et une série de ballons est fixée à la boucle souple à intervalles espacés. Le premier compartiment est ouvert à l'air ambiant. La région inférieure est remplie d'argon et le deuxième compartiment est rempli d'hélium. Les ballons sont remplis d'hélium de sorte que les ballons sont soumis à une poussée d'Archimède dans le premier compartiment et ne sont pas soumis à la poussée d'Archimède dans le deuxième compartiment, et le bassin d'argon empêche la diffusion de l'air ambiant dans le deuxième compartiment.


Note: Claims are shown in the official language in which they were submitted.

CLAIMS

What is claimed is:
1. An apparatus for teaching gas properties, comprising:
an oblong hollow casing having first and second vertical
compartments separated by a partition, and a clear cylindrical
passage around the circumference thereof;
a first and second sheaves mounted above one another along said
partition;
a flexible loop mounted around said sheaves and a series of balloons
attached to said flexible loop at spaced intervals;
said casing also having an upper region and a lower region therein
communicating with said first and second compartments;
said first compartment being opened to ambient air;
said second compartment being filled by a light gas, said light gas
being lighter than said ambient air;
said lower region being filled with a heavy gas and said heavy gas
being heavier than said ambient air such that said heavy gas impedes
a diffusion of said ambient air in said second compartment;
said balloons being filled with said light gas such said balloons have
buoyancy in said first compartment and a lack of buoyancy in said
second compartment.
2. The apparatus as claimed in claim 1, wherein said casing has a
stretched toroidal shape.
3. The apparatus as claimed in claim 1, wherein said casing is made of
a transparent material.

12

4. The apparatus as claimed in claim 1 wherein said heavy gas is argon
and said light gas is helium.
5. The apparatus as claimed in claim 1, further comprising a fill plug
in said lower region below said second compartment.
6. The apparatus as claimed in claim 1, further comprising a stand and
dimensions appropriate for setting up in a classroom or lecture hall
environment.
7. The apparatus as claimed in claim 1, wherein said gas seal is a low
friction gasket.
8. The apparatus as claimed in claim 1, wherein said sheaves have
smooth surfaces.
9. The apparatus as claimed in claim 1, wherein each of said balloons
are attached to said flexible loop by a detachable clip.
10. The apparatus as claimed in claim 1, having a shape of a bucket
elevator.
11. The apparatus as claimed in claim 1, wherein said sheaves have a
same diameter and are spaced apart above one another a distance
greater that said same diameter.
12. In combination; an apparatus for teaching gas properties,
comprising:
an oblong hollow casing having first and second vertical

13

compartments separated by a partition, and a clear cylindrical
passage around the circumference thereof;
a first and second sheaves mounted above one another along said
partition; said first and second sheaves having a same diameter and
being spaced apart above one another a distance greater than said
same diameter;
a gas seal mounted between said sheaves and said partition;
a flexible loop mounted around said sheaves and a series of balloons
attached to said flexible loop at spaced intervals;
said casing also having an upper region and a lower region therein
communicating with said first and second compartments;
said first compartment being opened to ambient air;
said second compartment being filled by a light gas, said light gas
being lighter than said ambient air;
said lower region being filled with a heavy gas and said heavy gas
being heavier than said ambient air such that said heavy gas impedes
a diffusion of said ambient air in said second compartment;
said balloons being filled with said light gas such said balloons have
buoyancy in said first compartment and a lack of buoyancy in said
second compartment; said casing comprising a fill plug in said
lower region below said second compartment; and
a pressurized light gas bottle with a hose and nozzle assembly for
periodically replenishing said second compartment of said apparatus
with said light gas through said fill plug when said ambient air and
said light gas have diffused into each other.
13. The
installation as claimed in claim 12 wherein said heavy gas is
argon and said light gas is helium.

14

14. The installation as claimed in claim 12, wherein said casing is made
of a transparent material.
15. The installation as claimed in claim 12, wherein said apparatus has
the shape of a bucket elevator.
16. The installation as claimed in claim 15, wherein said apparatus has
a stand and a dimensions appropriate for mounting in a classroom
or lecture hall.
17. The installation as claimed in claim 12, wherein said gas seal is a
low friction gasket, and said sheaves have smooth surfaces.
18. The installation as claimed in claim 12, wherein each of said
balloons are attached to said flexible loop by a detachable clip; said
casing has an opening in said first compartment and said opening is
larger that a size of said balloons.
19. In combination; an apparatus for teaching gas properties,
comprising:
an oblong hollow transparent casing having first and second vertical
compartments separated by a partition, and a clear cylindrical
passage around the circumference thereof; said casing having a
shape of a bucket elevator;
a first and second sheaves mounted above one another along said
partition; said first and second sheaves having a same diameter and
being spaced apart above one another a distance greater than said
same diameter;
a gas seal mounted between said sheaves and said partition;


a flexible loop mounted around said sheaves and a series of balloons
attached to said flexible loop at spaced intervals;
said casing also having an upper region and a lower region therein
communicating with said first and second compartments;
said first compartment being opened to ambient air;
said casing having an opening in said first compartment and said
opening is larger that a size of said balloons;
said second compartment being filled by a helium gas;
said lower region being filled with argon gas;
said balloons being filled with helium gas such said balloons have
buoyancy in said first compartment and a lack of buoyancy in said
second compartment; said casing comprising a fill plug in said
lower region below said second compartment; and
a pressurized light gas bottle with a hose and nozzle assembly for
periodically replenishing said second compartment of said apparatus
with said light gas through said fill plug when said ambient air and
said light gas have diffused into each other.
20. The
installation as claimed in claim 19, wherein each of said
balloons are attached to said flexible loop by a detachable clip.

16


A single figure which represents the drawing illustrating the invention.

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Admin Status

Title Date
(22) Filed 2014-11-14
Examination Requested 2014-11-14
(41) Open to Public Inspection 2015-07-27
(45) Issued 2016-01-12

Maintenance Fee

Description Date Amount
Last Payment 2017-09-20 $50.00
Next Payment if small entity fee 2018-11-14 $50.00
Next Payment if standard fee 2018-11-14 $100.00

Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following

  • the reinstatement fee set out in Item 7 of Schedule II of the Patent Rules;
  • the late payment fee set out in Item 22.1 of Schedule II of the Patent Rules; or
  • the additional fee for late payment set out in Items 31 and 32 of Schedule II of the Patent Rules.

Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Request for Examination $400.00 2014-11-14
Filing $200.00 2014-11-14
Registration of Documents $100.00 2015-10-14
Final $150.00 2015-11-03
Maintenance Fee - Patent - New Act 2 2016-11-14 $50.00 2016-10-06
Maintenance Fee - Patent - New Act 3 2017-11-14 $50.00 2017-09-20

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Abstract 2014-11-14 1 23
Description 2014-11-14 11 435
Claims 2014-11-14 5 162
Drawings 2014-11-14 2 96
Representative Drawing 2015-07-02 1 15
Cover Page 2015-08-10 2 49
Abstract 2015-09-22 1 23
Description 2015-09-22 11 437
Claims 2015-09-22 5 164
Cover Page 2016-01-04 1 46
Correspondence 2015-05-20 1 40
Prosecution-Amendment 2015-05-20 1 40
Prosecution-Amendment 2015-06-02 1 33
Prosecution-Amendment 2015-08-04 1 50
Prosecution-Amendment 2015-08-06 1 3
Prosecution-Amendment 2015-08-27 4 210
Prosecution-Amendment 2015-09-22 9 322
Correspondence 2015-11-03 2 134
Fees 2016-10-06 1 96
Fees 2017-09-20 1 33