Preventing overstroke of free-piston stirling engine from loss of load
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United States of America Patent
Stats
-
Oct 27, 2020
Grant Date -
Aug 20, 2020
app pub date -
Feb 19, 2019
filing date -
Feb 19, 2019
priority date (Note) -
Published
status (Latency Note)
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Abstract
A method for limiting the amplitude of reciprocation of a piston reciprocating in a cylinder of a free-piston Stirling engine. The method is the combination of both at least partially covering the heat rejecter cylinder port by the piston sidewall during a peak part of the inward reciprocation of the piston and at least partially covering the heat rejecter cylinder port by the displacer sidewall during a peak part of the outward reciprocation of the displacer. The piston and the displacer, at times during their reciprocation, fully cover the effective heat rejecter cylinder port when the piston amplitude of reciprocation is large and approaches the physical limit of the amplitude of reciprocation in order to avoid internal collisions by a reciprocating component.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
SUNPOWER INC | 182 MILL STREET ATHENS OH 45701 |
International Classification(s)

- 2019 Application Filing Year
- F02G Class
- 57 Applications Filed
- 45 Patents Issued To-Date
- 78.95 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Wood, James Gary | Albany, US | 18 | 55 |
# of filed Patents : 18 Total Citations : 55 |
Cited Art Landscape
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Patent Citation Ranking
- 0 Citation Count
- F02G Class
- 0 % this patent is cited more than
- 5 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Apr 27, 2028 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 27, 2032 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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

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May 07, 2020 | P | Published | |
Apr 01, 2019 | AS | ASSIGNMENT | free format text: CHANGE OF NAME;ASSIGNOR:NIPPON STEEL & SUMITOMO METAL CORPORATION;REEL/FRAME:049257/0828 Owner name: NIPPON STEEL CORPORATION, JAPAN Effective Date: Apr 01, 2019 |
Aug 20, 2018 | FEPP | FEE PAYMENT PROCEDURE | free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
May 21, 2018 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MIZUKAMI, KAZUMI;REEL/FRAME:046968/0495 Owner name: NIPPON STEEL & SUMITOMO METAL CORPORATION, JAPAN Effective Date: May 21, 2018 |
Feb 17, 2017 | F | Filing | |
Feb 18, 2016 | PD | Priority Date |

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