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Title: Spool-sleeve type change-over valve

Abstract: In a spool-sleeve type change-over valve, the axial width of the intake passage is reduced relative to that of the discharge passage within a range in which the same cylinder response as attained by intake and discharge passages of the same axial width is retained.


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Inventors: Fukano, Yoshihiro (Soka, JP)
Oneyama, Naotake (Soka, JP)

Application Number: 945057
Filing Date: 1978-09-22
Publication_date: 1980-01-08
Assignee: Shoketsu Kinzoku Kogyo Kabushiki Kaisha (Tokyo, JP)
Primary Class(es): 137/625.69 137/625.65
Other Classes:
US Patent Ref:
3323549Jun, 1967Carrington137/625.
3342213Sep, 1967Walters137/625.
3952775Apr, 1976Ogata137/625.

Other Refs: 2608701569829
Sep, 1977DE
Jun, 1945GB

Primary Examiner: Michalsky, Gerald A.
Assistant Examiner:
Attorney: Haight & Huard