Damper device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9909637
SERIAL NO

15115786

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A damper device includes a stator, a rotor, and a viscous fluid imparting a resistance to a rotation or a relative rotation of the rotor, and forms a braking force by the resistance. In the rotor, an annular seal portion made of soft synthetic resin is provided by integral molding. The stator includes an annular space in which the viscous fluid is filled, and a main member portion of the rotor is housed in the annular space. The annular seal portion comprises an outside annular portion provided in an outer circumferential portion of the rotor; an inside annular portion provided in an inner circumferential portion of the rotor; and a connection portion therebetween.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
NIFCO INC5-3 HIKARINOOKA YOKOSUKA-SHI KANAGAWA 239-8560

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Muranaka, Makoto Yokosuka, JP 14 28

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Sep 6, 2025
11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 6, 2029
Fee Large entity fee small entity fee micro entity fee
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