Gravity feed natural draft pellet stove
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jan 4, 2011
Grant Date -
Aug 16, 2007
app pub date -
Feb 15, 2006
filing date -
Feb 15, 2006
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
A pellet stove utilizing gravity feed and natural draft more effectively and efficiently burns pellet fuel while producing less air pollution and ash. In one embodiment, the pellet stove has a primary combustion area comprising a burn unit removably disposed in the vent tube, a feed tube defining a fuel chamber above the burn unit and a secondary combustion area, comprising a burn box defining a secondary burn chamber, below the burn unit. The burn unit has a removable receptacle which defines a primary burn chamber that receives pellet fuel from the fuel chamber and discharges substantially burned fuel to the secondary burn chamber for additional burning. Openings in the burn box, pellet receptacle and vent tube draw air into the burn chambers. A control mechanism controls the air flow to regulate the heat generated by the pellet stove. The pellet stove can be manufactured in various aesthetically pleasing designs.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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UNITED STATES STOVE COMPANY | 227 INDUSTRIAL PARK ROAD SOUTH PITTSBURG TN 37380 |
International Classification(s)

- 2006 Application Filing Year
- F23B Class
- 17 Applications Filed
- 9 Patents Issued To-Date
- 52.95 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Wisener, Gary | 913 Orange St. | 1 | 15 |
# of filed Patents : 1 Total Citations : 15 |
Cited Art Landscape
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Patent Citation Ranking
- 7 Citation Count
- F23B Class
- 5.56 % this patent is cited more than
- 14 Age
Forward Cite Landscape
- No Forward Cites to Display

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 |
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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 |
Full Text

Legal Events
Date | Code | Event | Description |
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Dec 20, 2022 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 12 |
Nov 15, 2018 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8 |
Nov 24, 2014 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Jun 28, 2011 | I | Issuance | |
Jun 08, 2011 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Dec 11, 2008 | P | Published | |
May 21, 2007 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ABE, TOSHIAKI;SUZUKI, HIROYUKI;REEL/FRAME:019388/0809 Owner name: KABUSHIKI KAISHA SATO, JAPAN Effective Date: May 21, 2007 |
Jul 20, 2006 | F | Filing | |
Jul 29, 2005 | PD | Priority Date |

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