Rotary expansible chamber devices – Interengaging rotating members – Like rotary members
Patent
1986-06-04
1988-05-31
Croyle, Carlton R.
Rotary expansible chamber devices
Interengaging rotating members
Like rotary members
403282, 403359, 403379, F04C 1800, F16D 100
Patent
active
047477636
ABSTRACT:
A Roots pump having a plurality of rotor assemblies each including a light-alloy rotor, a steel shaft press-fitted in a bore of the rotor and a lock pin which is inserted through the rotor and the shaft to prevent removal of the shaft from the rotor. The lock pin is located substantially at an axial center of a press-fitted portion of the shaft accommodated the axial bore. The shaft has a timing gear at one end thereof for meshing with a timing gear of the shaft of the adjacent rotor assembly. The shaft further has a plurality of engagement teeth provided at one of opposite ends of the press-fitted portion on the side of the timing gear. The engagement teeth are at least partially embedded in an inner surface defining the axial bore of the rotor, upon press-fitting of the press-fitted portion in the axis bore, to thereby prevent a rotational movement of the shaft relative to the rotor.
REFERENCES:
patent: 2611323 (1952-09-01), Digney
patent: 2754050 (1956-07-01), Wellington
patent: 3275225 (1966-09-01), Schultz
patent: 3290918 (1966-12-01), Weasler
patent: 4376333 (1983-03-01), Kanamaru
patent: 4464101 (1984-08-01), Shibuya
patent: 4509381 (1985-04-01), Ikemoto
A. Ehrhardt and H. Franke "Lueger, Lexikon der Technik", Band 1, Grundlagen des Maschinenbaues, Deutsche Verlagsanstalt-Stuttgart, 1960, pp. 617-618, Ordnungswort Vielnutverbindungen.
Harada Katsuro
Kato Kichiro
Kuroiwa Yoshio
Masuda Naofumi
Shirai Hisao
Croyle Carlton R.
Obeo Jane E.
Toyota Jidosha & Kabushiki Kaisha
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