Endless belt power transmission systems or components – Means for adjusting belt tension or for shifting belt,... – Tension adjuster or shifter driven by electrical or fluid motor
Patent
1993-12-06
1994-11-22
Buiz, Michael Powell
Endless belt power transmission systems or components
Means for adjusting belt tension or for shifting belt,...
Tension adjuster or shifter driven by electrical or fluid motor
474138, F16H 708
Patent
active
053664159
ABSTRACT:
A hydraulic belt tensioner operating on pressurized lubricating oil in an internal combustion engine. The tensioner includes a ratchet mechanism which locks the output member of the tensioner in a fixed position when the engine is not operating and which is disengaged when the engine is operating and the lubricating oil is pressurized. A seal is provided to prevent oil from escaping from the unit. The invention further includes slots formed in a plunger element of the tensioner which are effective to dissipate air which tends to become entrapped under the plunger when the engine is initially started.
REFERENCES:
patent: 4911679 (1990-03-01), Inoue et al.
patent: 4986796 (1991-01-01), Kawashima et al.
patent: 5073149 (1991-12-01), Maruyama et al.
patent: 5073150 (1991-12-01), Shimaya
patent: 5234383 (1993-08-01), Harada et al.
Church Kynan L.
Deppe David W.
Madden Richard L.
Srinivasan Nandakumar
Buiz Michael Powell
Eaton Corporation
Sajovec Frank M.
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