Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
Patent
1978-03-29
1980-10-28
Cohen, Irwin C.
Expansible chamber devices
With lubricating means
Piston has lubricant retaining or conducting means
92223, F16J 102, F16J 108
Patent
active
042300274
ABSTRACT:
This reciprocating piston, particularly for heat engines, compressors, coises at least one upper bead the side surface or periphery whereof presents projecting portions and recessed portions. The projecting portions of this periphery have an initial diameter, before running-in, such that the initial diametrical clearance between the periphery of the upper bead and the cylinder, cold, is substantially equal to half the clearance usually provided between the conventional upper bead and cylinder, so that, during the running-in, the projecting portions of the upper, pressed against the inner wall of the cyliner, may contract and be compressed in the recessed portions which absorb them.
Further, the piston presents at least one cavity opening on the periphery of the first bead of the piston and at least one mobile piece partially occupying this cavity and which moves therein due to the movement of the piston, to prevent, without other deterioration, any considerable deposits of calamine.
REFERENCES:
patent: 2344416 (1944-03-01), Scheibe
patent: 2410405 (1946-11-01), Cornelius
patent: 2438243 (1948-03-01), Zoromskis
patent: 3396976 (1968-08-01), Reinhoudt et al.
patent: 3463057 (1969-08-01), Packard et al.
patent: 3721163 (1973-03-01), Hill et al.
patent: 4048975 (1977-09-01), Urquhart
patent: 4075934 (1978-02-01), Wacker et al.
patent: 4086844 (1978-05-01), Homuth
Cohen Irwin C.
Nissen J. Harold
Societe Civile Promeyrat-Casteilia-Techniques Nouvelles du Moteu
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