Gear pump

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11098712
APP PUB NO 20200277953A1
SERIAL NO

16646541

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A gear pump comprises an internal gear (10), a first external gear (20) and a second external gear (30), a case member (50) having a one end side accommodation portion (52) for retaining these gears (10,20,30), an other end side accommodation portion (53) at other end side and a partition wall portion (54) therebetween, a cover member (70) and a plate member (80). A pump chamber (P) defined inside the internal gear (10) is divided into a first pump chamber (P1) which has a first intake-discharge space (L1) and a first discharge-intake space (H1), and a second pump chamber (P2) which has a second intake-discharge space (L2) and a second discharge-intake space (H2). The plate member has a first communication path (81) and a second communication path (82) between the plate member (80) and the cover member (70). The one side communication passage (57) is communicated with the first communication path (81). Two penetrating holes (82b,82c) are formed on the plate member (80). An other side communication passage (82a), which communicate the two penetrating holes (82b,82c) with each other, is formed between the plate member (80) and the cover member (70).

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • TBK CO., LTD.

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Terada, Yoshiyuki Tokyo, JP 12 245

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
3.5 Year Payment $1600.00 $800.00 $400.00 Feb 24, 2025
7.5 Year Payment $3600.00 $1800.00 $900.00 Feb 24, 2029
11.5 Year Payment $7400.00 $3700.00 $1850.00 Feb 24, 2033
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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