AU548392B2 - Creation of Inventions and Patents with Artificial Intelligence

AU548392B2 – Powered air-purifying respirators
– Google Patents

AU548392B2 – Powered air-purifying respirators
– Google Patents
Powered air-purifying respirators

Info

Publication number
AU548392B2

AU548392B2
AU84215/82A
AU8421582A
AU548392B2
AU 548392 B2
AU548392 B2
AU 548392B2
AU 84215/82 A
AU84215/82 A
AU 84215/82A
AU 8421582 A
AU8421582 A
AU 8421582A
AU 548392 B2
AU548392 B2
AU 548392B2
Authority
AU
Australia
Prior art keywords
chamber
air
pump means
sensing
face mask
Prior art date
1981-05-29
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired – Fee Related

Application number
AU84215/82A
Other versions

AU8421582A
(en

Inventor
Joseph Raymond Hilton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Racal Safety Ltd

Original Assignee
Racal Safety Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1981-05-29
Filing date
1982-05-26
Publication date
1985-12-12
Family has litigation

First worldwide family litigation filed
litigation
Critical
https://patents.darts-ip.com/?family=10522123&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AU548392(B2)
“Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1982-05-26
Application filed by Racal Safety Ltd
filed
Critical
Racal Safety Ltd

1982-12-02
Publication of AU8421582A
publication
Critical
patent/AU8421582A/en

1985-12-12
Application granted
granted
Critical

1985-12-12
Publication of AU548392B2
publication
Critical
patent/AU548392B2/en

2002-05-26
Anticipated expiration
legal-status
Critical

Status
Expired – Fee Related
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

A—HUMAN NECESSITIES

A62—LIFE-SAVING; FIRE-FIGHTING

A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING

A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort

A62B18/006—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort with pumps for forced ventilation

A—HUMAN NECESSITIES

A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE

A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR

A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes

A61M16/0057—Pumps therefor

A—HUMAN NECESSITIES

A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE

A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR

A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes

A61M16/0057—Pumps therefor

A61M16/0066—Blowers or centrifugal pumps

A61M16/0069—Blowers or centrifugal pumps the speed thereof being controlled by respiratory parameters, e.g. by inhalation

A—HUMAN NECESSITIES

A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE

A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR

A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes

A61M16/10—Preparation of respiratory gases or vapours

A61M16/105—Filters

A61M16/106—Filters in a path

A61M16/107—Filters in a path in the inspiratory path

A—HUMAN NECESSITIES

A62—LIFE-SAVING; FIRE-FIGHTING

A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING

A62B7/00—Respiratory apparatus

A62B7/10—Respiratory apparatus with filter elements

Abstract

The device comprises an expandable chamber (13) having an outlet (23) for connection to a facepiece, for example a face mask (26) and an inlet (12) connected to pump means (2, 3, 4, 5) for drawing ambient air into the device through a filter (8) and pumping it into the chamber. In use the wearer of the face mask draws air from the chamber and that air is replenished by operation of the pump means.
Means (19) are provided for sensing the degree of expansion of the expandable chamber and are coupled with means (22) for varying the power supplied to the pump means so that the pump means supplies only sufficient filtered air to maintain the chamber inflated. A bias is provided on the chamber advantageously coupled with the sensing means for maintaining a positive pressure in the chamber.
The device allows close control of the amount of air passing through the respirator so as to substantially reduce the amount of air which is filtered but unbreathed to extend the life of the filter means.

AU84215/82A
1981-05-29
1982-05-26
Powered air-purifying respirators

Expired – Fee Related

AU548392B2
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

GB8116424

1981-05-29

GB8116424

1981-05-29

Publications (2)

Publication Number
Publication Date

AU8421582A

AU8421582A
(en)

1982-12-02

AU548392B2
true

AU548392B2
(en)

1985-12-12

Family
ID=10522123
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

AU84215/82A
Expired – Fee Related

AU548392B2
(en)

1981-05-29
1982-05-26
Powered air-purifying respirators

Country Status (8)

Country
Link

US
(1)

US4430995A
(en)

EP
(1)

EP0066451B1
(en)

JP
(1)

JPS5829468A
(en)

AT
(1)

ATE14988T1
(en)

AU
(1)

AU548392B2
(en)

DE
(1)

DE3265597D1
(en)

GB
(1)

GB2099709B
(en)

ZA
(1)

ZA823655B
(en)

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

AU612876B2
(en)

1988-07-26
1991-07-18
Minnesota Mining And Manufacturing Company
Breathing apparatus

Families Citing this family (99)

* Cited by examiner, † Cited by third party

Publication number
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Publication date
Assignee
Title

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1982-05-13
1986-08-14
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Respirator

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Racal Safety Ltd

IMPROVEMENTS IN A SERVO-ASSISTED RESPIRATOR

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not_active
Expired – Lifetime

1982-05-26
AT
AT82302703T
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active

1982-05-26
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ZA823655A
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1982-05-26
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1982-05-26
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1982-05-26
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AU84215/82A
patent/AU548392B2/en
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Expired – Fee Related

1982-05-29
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JP57092070A
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active
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Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

AU612876B2
(en)

1988-07-26
1991-07-18
Minnesota Mining And Manufacturing Company
Breathing apparatus

Also Published As

Publication number
Publication date

GB2099709B
(en)

1984-08-15

ATE14988T1
(en)

1985-09-15

US4430995A
(en)

1984-02-14

AU8421582A
(en)

1982-12-02

GB2099709A
(en)

1982-12-15

DE3265597D1
(en)

1985-09-26

JPS5829468A
(en)

1983-02-21

ZA823655B
(en)

1983-03-30

EP0066451A1
(en)

1982-12-08

EP0066451B1
(en)

1985-08-21

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