Rotary expansible chamber devices – Intermittently accelerated and receding members rotate in... – Each a working member
Patent
1976-02-04
1977-06-07
Vrablik, John J.
Rotary expansible chamber devices
Intermittently accelerated and receding members rotate in...
Each a working member
74393, F01C 100, F16H 3502
Patent
active
040280195
ABSTRACT:
Two coaxial rotors are connected with a counter-shaft through two pairs of varying-motion gears of opposite phase. They are designed to provide perfect mass-balance. Each gear rigid with a rotor contains two diametricaly opposite maximum radii, and perpendicular thereto two minimum radii. Its pitch lines that roll on the mate without slippage reach further out from the pitch circle of an imaginary uniform-motion gear of a pair having the same axes and tooth ratio than they recede inwardly of said circle; and they are more curved at the maximum radii than an ellipse of the same maximum and minimum radii. These features secure perfect mass balance.
Here now the gear teeth are uniformly spaced along the pitch lines and have a constant inclination thereto.
The invention also provides a simplified procedure for mass production, that contains fewer steps and thereby provides higher accuracy than hitherto possible with gear teeth uniformly spaced along pitch lines of varying radii.
REFERENCES:
patent: 1298838 (1919-04-01), Weed
patent: 2108385 (1938-02-01), Murakami
patent: 3585874 (1971-06-01), Ingham
patent: 3769946 (1973-11-01), Scherrer
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