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Title: US5054481: Infusion apparatus to supply compressed air into an industrial mask
[ Derwent Title ]

Country: US United States of America

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7 pages

Inventor: Shin, Hae-Ryun; Seoul, Republic of Korea

Assignee: None

Published / Filed: 1991-10-08 / 1990-08-29

Application Number: US1990000574343

IPC Code: Advanced: A62B 7/02;
Core: A62B 7/00;
IPC-7: A62B 7/02;

U.S. Class: Current: 128/205.12; 128/204.18; 128/205.25; 128/205.27; 128/205.29; 128/206.12; 128/206.15; 128/206.28;
Original: 128/205.12; 128/204.18; 128/205.25; 128/205.27; 128/205.29; 128/206.12; 128/206.15; 128/206.28;

Field of Search: 128/204.18,205.12,205.27,205.25,205.29,206.12,206.15,206.28,207.12,207.16

Priority Number:
1990-08-29  US1990000574343

Abstract: An infusion apparatus to supply compressed air into an industrial mask having a "T"-shape decompressing regulator at a first end of which is provided a conventional coupling device while at a second end, inner screw threads are formed into which a pressure reducing bolt is inserted to regulate the opening of an air supply channel below of which there is provided a purification receptacle filled with carbon filter which is linked by a hose to another purification receptacle filled with carbon filter. Inside of the conventional dustproof mask there is provided an air exhaust hose in a circular form the end of which is penetrating out of the mask and connected to said purification receptacle. Another drill coupling adapter is provided between the oiler and compressed air hose of a rock drill. On the sides of the drill coupling adapter three grooves are formed so as to fixedly insert another coupling device into one of the grooves and one of the remaining two grooves is blocked with a plug and the other inserted with an elbow. Where there is no rock drill being in use, the apparatus of the present invention may be connected to a compressed air hose brought into a work site.

Attorney, Agent or Firm: Finnegan, Henderson, Farabow, Garrett & Dunner ;

Primary / Asst. Examiners: Burr, Edgar S.; Raciti, Eric P.

Maintenance Status: E2 Expired  Check current status

INPADOC Legal Status: Show legal status actions

Family: None

First Claim:
Show all 5 claims
What is claimed is:     1. An infusion apparatus for supplying compressed air into an industrial mask, comprising:
  • a T-shaped decompressing regulator having a first coupling device at a first end and an inner threaded portion at a second end;
  • an air supply channel formed in said regulator;
  • a pressure bolt inserted into said threaded portion to regulate the opening of said air supply channel;
  • a first purification receptacle, having a carbon filter disposed therein, provided immediately below said air supply channel;
  • a second purification receptacle, having a carbon filter disposed therein, fixedly attached to the industrial mask;
  • a hose linking said first and second purification receptacles; and
  • an air exhaust hose arranged in a substantially circular loop having an end portion extending out of said mask and connected to said second purification receptacle.

Background / Summary: Show background / summary

Drawing Descriptions: Show drawing descriptions

Description: Show description

Forward References: Show 5 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (5)   |   Backward references (11)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 7pp US804272  1905-11 Schwartz   RESPIRATOR.
Get PDF - 4pp US1630501* 1927-05 Steese    
Get PDF - 4pp US2577606  1951-12 Conley   Filtering means for air supply devices
Get PDF - 3pp US2775968* 1957-01 Polli et al.    
Get PDF - 5pp US2852023* 1958-09 Hamilton et al.    
Get PDF - 7pp US3941573  1976-03 Chapel   Apparatus for removing anesthetic gases
Get PDF - 11pp US4141703  1979-02 Mulchi  Wolf; Stanley I. Air-pollution filter and face mask
Get PDF - 9pp US4649912  1987-03 Collins   Supplied air respirator system
Get PDF - 7pp US4774939  1988-10 Disney   Emergency breathing and warning device
Get PDF - 8pp US4809472  1989-02 Jung  Kidde Industries, Inc. Carrier track assembly for extensible and retractable boom machines
  * some details unavailable
Foreign References:
Publication Date IPC Code Assignee   Title
Get PDF - 6pp EP0339487 1988-04  A62B 19/00 BLUECHER HASSO VON Active carbon filter layer for gas masks 

Other References:
  • MSA Data Sheet 10-00-14; "Duo Flow Combination Breathing Apparatus with Ultra Filter® cartridge"; 1987.
  • MSA Data Sheet 10-01-14; "Constant Flow or Pressure Demand Duo-Flow.TM. and Duo-Twin.TM. Respirators"; 1988.

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