Undular washer
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United States of America Patent
Stats
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Jul 28, 2015
Grant Date -
Feb 20, 2014
app pub date -
Feb 1, 2012
filing date -
Feb 2, 2011
priority date (Note) -
In Force
status (Latency Note)
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Importance

US Family Size
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Non-US Coverage
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Patent Longevity
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Forward Citations
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Abstract
The invention relates to a wave spring (2) which comprises a spring strip (4) which is coiled in a substantially circular-ring-shaped manner and, over the circumference, describes a wavy line which oscillates about a radial reference plane and has wave crests (6) and wave troughs. The ends of the circular-ring-shaped spring strip (4) are connected by means of a weld seam (10) which is arranged in a low-tension region of the wavy line of the spring strip (4) between a wave crest (6) and an adjacent wave trough (8).
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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SCHERDEL INNOTEC FORSCHUNGS- UND ENTWICKLUNGS-GMBH | 95615 MARKTREDWITZ |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Doetterl, Peter | Waldershof, DE | 2 | 4 |
# of filed Patents : 2 Total Citations : 4 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 1 Citation Count
- B23K Class
- 13.67 % this patent is cited more than
- 10 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 28, 2027 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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

Legal Events
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Oct 09, 2024 | 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 |
Oct 03, 2022 | AS | ASSIGNMENT | free format text: CHANGE OF NAME;ASSIGNOR:KOYO MACHINE INDUSTRIES CO., LTD.;REEL/FRAME:063116/0520 Owner name: JTEKT MACHINE SYSTEMS CORPORATION, JAPAN Effective Date: Oct 03, 2022 |
Sep 25, 2020 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
Apr 25, 2017 | I | Issuance | |
Apr 05, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jun 30, 2016 | P | Published | |
Apr 20, 2016 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OZAKI, MITSUHARU;YANO, DAIKI;HONDA, KAZUHIDE;AND OTHERS;SIGNING DATES FROM 20160205 TO 20160223;REEL/FRAME:038475/0656 Owner name: JTEKT CORPORATION, JAPAN free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OZAKI, MITSUHARU;YANO, DAIKI;HONDA, KAZUHIDE;AND OTHERS;SIGNING DATES FROM 20160205 TO 20160223;REEL/FRAME:038475/0656 Owner name: KOYO MACHINE INDUSTRIES CO., LTD., JAPAN |
Mar 02, 2016 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OZAKI, MITSUHARU;YANO, DAIKI;HONDA, KAZUHIDE;AND OTHERS;SIGNING DATES FROM 20151116 TO 20151119;REEL/FRAME:037977/0001 Owner name: KOYO MACHINE INDUSTRIES CO., LTD., JAPAN free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OZAKI, MITSUHARU;YANO, DAIKI;HONDA, KAZUHIDE;AND OTHERS;SIGNING DATES FROM 20151116 TO 20151119;REEL/FRAME:037977/0001 Owner name: JTEKT CORPORATION, JAPAN |
Dec 28, 2015 | F | Filing | |
Dec 25, 2014 | PD | Priority Date |

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