FR2092866A1 - Air-permeable filter and sterilizer - for telephone hand-sets - Google Patents

Air-permeable filter and sterilizer - for telephone hand-sets

Info

Publication number
FR2092866A1
FR2092866A1 FR7023662A FR7023662A FR2092866A1 FR 2092866 A1 FR2092866 A1 FR 2092866A1 FR 7023662 A FR7023662 A FR 7023662A FR 7023662 A FR7023662 A FR 7023662A FR 2092866 A1 FR2092866 A1 FR 2092866A1
Authority
FR
France
Prior art keywords
mixture
filter
air
microphone
telephone
Prior art date
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.)
Granted
Application number
FR7023662A
Other languages
French (fr)
Other versions
FR2092866B1 (en
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.)
ONUKI MICHIKO JA
Original Assignee
ONUKI MICHIKO JA
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.)
Filing date
Publication date
Application filed by ONUKI MICHIKO JA filed Critical ONUKI MICHIKO JA
Priority to FR7023662A priority Critical patent/FR2092866A1/en
Publication of FR2092866A1 publication Critical patent/FR2092866A1/en
Application granted granted Critical
Publication of FR2092866B1 publication Critical patent/FR2092866B1/fr
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Telephone Set Structure (AREA)

Abstract

Air permeable, sterilising filter, partic. for the microphone of telephone handsets, is intended to remove the risk of bacterial infection from persons using the telephone. A cover of pliable, plastic material is placed over the microphone; it has a hole in the shape of a rose, (or of any other suitable design) which leaves a narrow margin around the periphery. Ribs or grids divided the hole into several separate openings. An impregnated porous sheet of a fine-textured material, such as glass fibre or a plastic foam, is fitted inside the cover and held in position by a retaining plate; it can be removed easily when the disinfectant has been exhausted by evaporation. The impregnating material consists of a mixture of alkyldimethylammonium chlorides of formula C6H5OH2N(CH3)RCl, where R is a mixture of C8H17 and C18H37. The filter is coated with a silicone film to prevent if from becoming fluffy and from a absorbing moisture from the atmosphere. A liquid perfume may be added to the mixture. The filter acts continuously and thoroughly sterilises the air and the breath for a long period.
FR7023662A 1970-06-25 1970-06-25 Air-permeable filter and sterilizer - for telephone hand-sets Granted FR2092866A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7023662A FR2092866A1 (en) 1970-06-25 1970-06-25 Air-permeable filter and sterilizer - for telephone hand-sets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7023662A FR2092866A1 (en) 1970-06-25 1970-06-25 Air-permeable filter and sterilizer - for telephone hand-sets

Publications (2)

Publication Number Publication Date
FR2092866A1 true FR2092866A1 (en) 1972-01-28
FR2092866B1 FR2092866B1 (en) 1973-11-16

Family

ID=9057825

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7023662A Granted FR2092866A1 (en) 1970-06-25 1970-06-25 Air-permeable filter and sterilizer - for telephone hand-sets

Country Status (1)

Country Link
FR (1) FR2092866A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE43982C (en) * F. C. GLASER, König]. Kommissions-Rath in Berlin SW., Lindenstrafse 80 Screw locking with lock nut fastened with a wedge
GB784241A (en) * 1955-02-28 1957-10-09 Hubert David O Connell Telephone sterilisation device
CH380304A (en) * 1959-04-28 1964-07-31 Fram Corp Filters for air purification in air circulation systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE43982C (en) * F. C. GLASER, König]. Kommissions-Rath in Berlin SW., Lindenstrafse 80 Screw locking with lock nut fastened with a wedge
GB784241A (en) * 1955-02-28 1957-10-09 Hubert David O Connell Telephone sterilisation device
CH380304A (en) * 1959-04-28 1964-07-31 Fram Corp Filters for air purification in air circulation systems

Also Published As

Publication number Publication date
FR2092866B1 (en) 1973-11-16

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