Multi-valve engine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5553572
SERIAL NO

08316249

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An improved air spring arrangement for an internal combustion engine having three valves per cylinder which are disposed in surrounding relationship to a spark plug. The air spring arrangement is formed by a recess formed in the cylinder head that encompasses each of the valve stems and an insert piece that is inserted into this recess and which defines the bores for the respective air chambers. The supply and relief passages for the air chambers are formed in the insert piece by drilled passages which have a V-shaped configuration to provide a more compact assembly and a less complicated cylinder head arrangement.

First Claim

See full text

Other Claims data not available

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
YAMAHA HATSUDOKI KABUSHIKI KAISHAIWATA-SHI SHIZUOKA 438-8501

International Classification(s)

loading....
  • 1994 Application Filing Year
  • F01L Class
  • 145 Applications Filed
  • 64 Patents Issued To-Date
  • 44.14 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances19941995199619970255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ochiai, Katsumi Iwata, JP 63 628

Cited Art Landscape

Load Citation

Patent Citation Ranking

  • 7 Citation Count
  • F01L Class
  • 0 % this patent is cited more than
  • 29 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges3416811 - 1011 - 2021 - 3031 - 40024681012141618202224262830323436

Forward Cite Landscape

Load Citation