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 Title: |
US4915105:
Miniature respiratory apparatus
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Lee, Tien-Chu; Taipei, Taiwan
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| Assignee: |
None
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| Published / Filed: |
1990-04-10
/ 1988-10-28
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| Application Number: |
US1988000257640
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| IPC Code: |
Advanced:
A62B 18/00;
Core:
more...
IPC-7:
A62B 7/00;
A62B 7/10;
A62B 9/04;
A62B 23/02;
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| ECLA Code: |
A62B18/00;
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| U.S. Class: |
Current:
128/205.27;
128/206.11;
128/206.18;
128/207.18;
D24/110.4;
Original:
128/205.27;
128/206.11;
128/206.18;
128/207.18;
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| Field of Search: |
128/205.27,205.29,206.11,206.12,206.15,206.18,206.27,207.13,201.11,205.12,204.18,205.22,201.25,207.18
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| Priority Number: |
| 1988-10-28 |
US1988000257640 |
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| Abstract: |
A respiratory apparatus including an air filter; a hose connected to the filter; a nose-connected breathing pipe connected with the hose and having two inhaling valves formed on two side openings of the pipe, two nostril connectors protruding rearwardly from the pipe to fluidically connect to a wearer's nostrils, and an exhalation valve formed in the front portion of the pipe; whereby upon an inhalation by the wearer, a clean air stream is inhaled into the wearer's nose through the inhalation valves, and upon an exhalation, exhaust air is discharged through the exhaling valve. The apparatus being comfortable to wear and providing improved dissipation of facial heat.
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| Primary / Asst. Examiners: |
Burr, Edgar S.; Asher, Kimberly L.
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 9 claims |
I claim:
1. A respiratory apparatus comprising:
- an air filtering means having a filtering medium formed therein secured to a wearer's chest, waist or neck;
- an air delivery hose having a main hose connected to an outlet of said filtering means and two fiburcate hoses branched from the main hose; and
- a nose-connected breathing means including a horizontal pipe having two side openings of the pipe connected to said two bifurcate hoses, two inhaling valves one in each said side opening of said pipe, two nostril connectors formed on a rear portion of said pipe poking into a wearer's nostrils fluidically communicated with a wearer's nostrils, said pipe, said hose and said filtering means, an exhaling valve formed in a front portion of said pipe opposite to said nostril connectors, and a wind shield mounted on said horizontal pipe in front of said exhaling valve,
- the improvement which comprises:
- said wind shield including a wedge portion tapered frontwardly having a cross section of V-shape, two clamps protruding rearwardly from said wedge portion clampingly mounted on said horizontal pipe in front of said exhaling valve, and two said openings for discharging exhaust air, each side opening being defined between said wedge portion and the partial circumferential surface of said horizontal pipe,
- whereby upon an inhaling by a wearer, a clean air stream, after being filtered through said filtering means, is inhaled into a wearer's nostrils through said hoses, said inhaling valves, said pipe and said nostril connectors; whereas upon an exhaling by a wearer, the exhaust air is discharged outwardly through said nostril connectors, said pipe and said exhaling valve.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 117 U.S. patent(s) that reference this one
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