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Patent 2216218 Summary

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Claims and Abstract availability

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(12) Patent Application: (11) CA 2216218
(54) English Title: FUEL TANK SYSTEM
(54) French Title: SYSTEME DE RESERVOIR DE CARBURANT
Status: Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication
Bibliographic Data
Abstracts

English Abstract


The invention relates to pressurizing existing air craft fuel systems with flameretardant (or fire retardant) gases.


Claims

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


The embodiments of the invention in which an exclusive property or privilege is claimed are
defined as follows:
1. A fuel tank system for minimizing fuel tank explosion on existing (as a retro-fit) or
new air craft.
2. The system of claim 1 wherein said system is comprised of a high pressure tank
or gas generator and a pressure regulator and suitable piping for air craft.
3. The system of claim 1 wherein said system is utilizing flame retardant gases
approved by air craft manufacturers.
4. The system of claim 1 wherein said system the flame retardant gases are used to
pressurize fuel tanks as they are depleted so that no oxygen is present.
5. A method for preventing fuel tank explosions on air craft even in emergency
landing situations the method comprising the steps of supplying pressurized flame retardant
gas to the air vent system of fuel tanks thereby preventing oxygen to enter and thereby
avoiding any explosion and consequent fire.

Description

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


CA 02216218 1997-11-18
DESCRIPTION
Existing fuel tank ventilation systems allow air to get into fuel tanks of air craft
which could cause an explosion if there is an equipn,ent malfunction resulting in an
ignition, such as, static spark or short circuit, fuel gauge failure, etc.
The prese,)t invention is about minimizing the chance of fuel tank explosion on
existing air craft by pressurizing fuel tanks with flame retardant gases, such as:
nitrogen, C02, Argon, or special gases for this purpose.
The flame retardant gas could be supplied by a high pressure tank or a gas
generator depending what would be approved by air craft manufacturers.
From the gas generator or high pressure tank, the gas is piped to the air vent
system of fuel tanks through a pressure regulator which will control positive low
pressure in fuel tanks to assure that there is no air getting into the system. -

Representative Drawing
A single figure which represents the drawing illustrating the invention.
Administrative Status

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Event History

Description Date
Application Not Reinstated by Deadline 2003-11-18
Time Limit for Reversal Expired 2003-11-18
Inactive: Adhoc Request Documented 2003-08-20
Inactive: Abandon-RFE+Late fee unpaid-Correspondence sent 2002-11-18
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice 2002-11-18
Inactive: Cover page published 1999-06-22
Application Published (Open to Public Inspection) 1999-05-18
Inactive: Correspondence - Formalities 1998-01-23
Classification Modified 1997-12-22
Inactive: First IPC assigned 1997-12-22
Inactive: IPC assigned 1997-12-22
Inactive: Filing certificate - No RFE (English) 1997-11-27
Application Received - Regular National 1997-11-26

Abandonment History

Abandonment Date Reason Reinstatement Date
2002-11-18

Maintenance Fee

The last payment was received on 2001-09-10

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;
  • the late payment fee; or
  • additional fee to reverse deemed expiry.

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Fee History

Fee Type Anniversary Year Due Date Paid Date
Application fee - small 1997-11-18
MF (application, 2nd anniv.) - small 02 1999-11-18 1999-09-08
MF (application, 3rd anniv.) - small 03 2000-11-20 2000-09-11
MF (application, 4th anniv.) - small 04 2001-11-19 2001-09-10
Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
IVAN LASZLO
Past Owners on Record
None
Past Owners that do not appear in the "Owners on Record" listing will appear in other documentation within the application.
Documents

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Document
Description 
Date
(yyyy-mm-dd) 
Number of pages   Size of Image (KB) 
Representative drawing 1999-06-20 1 6
Claims 1998-01-22 1 20
Cover Page 1999-06-20 1 20
Abstract 1997-11-17 1 4
Description 1997-11-17 1 21
Drawings 1997-11-17 1 21
Filing Certificate (English) 1997-11-26 1 163
Notice: Maintenance Fee Reminder 1999-08-18 1 130
Notice: Maintenance Fee Reminder 2000-08-20 1 119
Notice: Maintenance Fee Reminder 2001-08-20 1 131
Reminder - Request for Examination 2002-07-21 1 127
Notice: Maintenance Fee Reminder 2002-08-19 1 118
Courtesy - Abandonment Letter (Maintenance Fee) 2002-12-15 1 176
Courtesy - Abandonment Letter (Request for Examination) 2003-01-26 1 167
Second Notice: Maintenance Fee Reminder 2003-05-20 1 114
Notice: Maintenance Fee Reminder 2003-08-18 1 115
Correspondence 1997-11-26 1 26
Correspondence 1998-01-22 2 33
Fees 2001-09-09 1 69
Fees 1999-09-07 1 66
Fees 2000-09-10 1 69