Ductwork cleaning system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 28, 2001
Grant Date -
N/A
app pub date -
Jan 6, 2000
filing date -
Jan 6, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An accessory system for a ductwork cleaning machine that utilizes a vacuum hose having a rotating cleaning brush the vacuum and the power for the rotating brush being supplied from a remote power unit with a rotating drive cable being located within the vacuum hose. The accessories permit more efficient operation of the ductwork cleaning system. The first accessory is an improved nozzle for mounting the rotating brush which permits large vacuum openings without the risk of an operator becoming entangled with the rotating cable. A second accessory prevents the cable from withdrawing within the vacuum hose when the hose is disconnected from the power unit. The third to accessory is attached to the power unit and guides the guide cable into place as the vacuum hose is attached to the power unit.

First Claim
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
ROTOBRUSH INTERNATIONAL LLC | 612 E DALLAS RD SUITE 400 GRAPEVINE TX 76051 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Crutcher, J Dudley | Dunedin, FL | 1 | 4 |
Hyland, Pat | Bedford, TX | 1 | 4 |
Peterson, Scott | Ennis, TX | 72 | 509 |
Smith, Craig | Atlanta, GA | 74 | 1777 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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