Rotary expansible chamber devices – Methods
Patent
1978-11-15
1981-05-05
Vrablik, John J.
Rotary expansible chamber devices
Methods
418102, F04C 218, F04C 1500
Patent
active
042656028
ABSTRACT:
At least one pair of intermeshing impeller gears are supported by bearings such as bushings or roller bearings. Liquid drawn through the suction port is forced first to flow perpendicular to the axes of the gears toward one ends of the shafts or trunions thereof and then through a low pressure passage extended in parallel with the axes of the gears and communicated with the pump chamber in opposed relationship with the zone where the teeth of the gears are disengaging. Each bearing is formed with a lubrication or oil groove or passage. One port or end remote from the side face of the gear of the lubrication or oil groove is communicated with the low pressure passage at the closed end thereof or at a position adjacent to the inlet thereof through a passage while the other port or end is communicated through a passage with the low pressure passage at a position between the inlet and closed end thereof. Part of the liquid under low pressure drawn is forced to circulate through these passages and lubrication or oil grooves from the points adjacent to the inlet to the low pressure passage and at the closed end thereof to the points between the inlet and closed end thereof, whereby the bearings and shafts supported thereby may be lubricated and cooled.
REFERENCES:
patent: 1927749 (1933-09-01), Kimmig
patent: 2276107 (1942-03-01), Simons
patent: 2986096 (1961-05-01), Booth et al.
patent: 3490382 (1970-01-01), Joyner
patent: 3528756 (1970-09-01), Norlin et al.
Jecies Saul
Kayabakogyokabushikikaisha
Vrablik John J.
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