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 Title: |
US6220092:
Dryer with an air flow testing device
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Catbagan, Alfonso B.; Virginia Beach, VA 23455
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| Assignee: |
None
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| Published / Filed: |
2001-04-24
/ 1998-09-30
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| Application Number: |
US1998000163174
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| IPC Code: |
Advanced:
D06F 58/20;
D06F 58/22;
G01P 13/00;
Core:
more...
IPC-7:
F26B 19/00;
G01F 15/00;
G01F 23/02;
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| ECLA Code: |
D06F58/20; D06F58/22; G01P13/00B6;
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| U.S. Class: |
Current:
073/323;
034/089;
116/274;
Original:
073/323;
034/089;
116/274;
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| Field of Search: |
073/861.79,861.77,861.01,273,861.32,861.33,323,385,334
034/082,87,88,89
116/264,273,276
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| Priority Number: |
| 1998-09-30 |
US1998000163174 |
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| Abstract: |
An air flow testing device for use with a clothes dryer to indicate an obstruction in the exhaust system. Three potential states of exhausted air are monitored by the testing device when the dryer's lint screen is removed from its opening. In the first state, when the exhaust system is unobstructed, an impeller of the device freely turns within a casing held against the lint screen opening as the dryer is operating. In the second state, when the exhaust system is blocked, the same impeller remains static and does not rotate. In the third state when the exhaust system is partially blocked, the impeller moves and may stop. If either a fully or partially blocked state is detected, a user can simply clear the system including the tubing and flapper to resolve this common dryer problem without calling in a repair person.
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| Attorney, Agent or Firm: |
Patent & Trademark Services ;
Zack, Thomas ;
McGlynn, Joseph H. ;
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| Primary / Asst. Examiners: |
Fuller, Benjamin R.; Patel, Jagdish
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| Family: |
None
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First Claim:
Show all 3 claims |
What I claim as my invention is:
1. A combination of an air flow testing device and a clothing dryer comprising:
- a clothes dryer having a lint screen opening and an exhaust system for exhausting heated air from the dryer;
- a casing mounted on the lint screen opening, said casing having a transparent wall and generally closed except for an opening in the casing;
- an air tight seal mounted between the casing and the lint screen opening; and
- an impeller blade rotatably mounted within the casing and in communication with the exhausted heated air from the dryer.
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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 2 U.S. patent(s) that reference this one
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