Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing
Patent
1976-04-08
1977-10-18
Freeh, William L.
Rotary expansible chamber devices
Heat exchange or non-working fluid lubricating or sealing
123 4131, F04C 2904
Patent
active
040544001
ABSTRACT:
An internal combustion engine including a housing having interior walls defining an operating chamber, a piston mounted for movement within the chamber and carrying at least one seal for sealing against an interior wall, an output shaft associated with the piston and journalled in the housing, an exhaust port in one of the interior walls comprises of a series of openings extending through the wall into the chamber and spaced from one another by bridging elements forming part of the housing. Coolant passages are disposed at each of the bridging elements so that the same are cooled to maintain a good oil film at the exhaust port to minimize wear of the seal and to support the seal as it moves across the exhaust port.
REFERENCES:
patent: 1799369 (1931-04-01), Herr
patent: 3448727 (1969-06-01), Kobayakawa
patent: 3485218 (1969-12-01), Clarke
patent: 3954356 (1976-05-01), Winchell et al.
Goloff Alexander
Mangus Ervin E.
Caterpillar Tractor Co.
Freeh William L.
Smith Leonard
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