Roots pump

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12188474
APP PUB NO 20240287986A1
SERIAL NO

18582025

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A roots pump comprising: a rotary shaft; a rotor having a hole-forming surface that forms an insertion hole, and a first bearing and a second bearing. Each of the first bearing and the second bearing includes an inner ring and an outer ring. The rotary shaft is press-fitted in the inner ring of the first bearing, and fitted in the inner ring of the second bearing with a clearance between the rotary shaft and the inner ring of the second bearing. An edge portion of the hole-forming surface adjacent to the first bearing serves as a press-fitting portion in which the rotary shaft is press-fitted, and at least an edge portion of the hole-forming surface adjacent to the second bearing serves as a clearance-fitting portion in which the rotary shaft is fitted with a clearance between the rotary shaft and the clearance-fitting portion.

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First Claim

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Family

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Patent Owner(s)

  • KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuyama, Ryosuke Kariya, JP 17 45
Masaki, Daisuke Kariya, JP 17 55
Shiromaru, Katsutoshi Kariya, JP 10 39
Yoshida, Masaya Kariya, JP 54 285

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