FR2266441A7 - Silencer for equipment operated by compressed air - has walls of multiple layers of porous elastomeric membranes - Google Patents

Silencer for equipment operated by compressed air - has walls of multiple layers of porous elastomeric membranes

Info

Publication number
FR2266441A7
FR2266441A7 FR7411499A FR7411499A FR2266441A7 FR 2266441 A7 FR2266441 A7 FR 2266441A7 FR 7411499 A FR7411499 A FR 7411499A FR 7411499 A FR7411499 A FR 7411499A FR 2266441 A7 FR2266441 A7 FR 2266441A7
Authority
FR
France
Prior art keywords
silencer
walls
compressed air
multiple layers
elastomeric membranes
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.)
Expired
Application number
FR7411499A
Other languages
French (fr)
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri AG Germany
Original Assignee
BBC Brown Boveri AG Switzerland
BBC Brown Boveri AG Germany
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 BBC Brown Boveri AG Switzerland, BBC Brown Boveri AG Germany filed Critical BBC Brown Boveri AG Switzerland
Priority to FR7411499A priority Critical patent/FR2266441A7/en
Application granted granted Critical
Publication of FR2266441A7 publication Critical patent/FR2266441A7/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/22—Silencing apparatus characterised by method of silencing by using movable parts the parts being resilient walls

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The silencer can be used with a pneumatic hammer (1) and is in the form of a cylinder (4) with two walls (7) and (8) attached to the head (3) and the barrel with fasteners (10). The walls (7, 8) are made from elastomeric membranes provided with a large number of holes (9), the holes in the outer membrane being staggered in relation to the holes in the inner membrane. When the hammer is being operated the air escaping from the ports (2) in the head (3) causes the silencer to bulge outwards as indicated by the lines (11). The silencer can also be used with compressed air safety valves and for the exhausts of internal combustion engines.
FR7411499A 1974-03-29 1974-03-29 Silencer for equipment operated by compressed air - has walls of multiple layers of porous elastomeric membranes Expired FR2266441A7 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7411499A FR2266441A7 (en) 1974-03-29 1974-03-29 Silencer for equipment operated by compressed air - has walls of multiple layers of porous elastomeric membranes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7411499A FR2266441A7 (en) 1974-03-29 1974-03-29 Silencer for equipment operated by compressed air - has walls of multiple layers of porous elastomeric membranes

Publications (1)

Publication Number Publication Date
FR2266441A7 true FR2266441A7 (en) 1975-10-24

Family

ID=9137141

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7411499A Expired FR2266441A7 (en) 1974-03-29 1974-03-29 Silencer for equipment operated by compressed air - has walls of multiple layers of porous elastomeric membranes

Country Status (1)

Country Link
FR (1) FR2266441A7 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406720A1 (en) * 1977-10-18 1979-05-18 Globe Outils Pneumatiques Silencer for pneumatic motor for small tools - has expansion volume enclosed by elastic wall which vary opening according to pressure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406720A1 (en) * 1977-10-18 1979-05-18 Globe Outils Pneumatiques Silencer for pneumatic motor for small tools - has expansion volume enclosed by elastic wall which vary opening according to pressure

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Legal Events

Date Code Title Description
ST Notification of lapse