Expansible chamber devices – Piston – Open-ended hollow skirt type
Patent
1994-03-10
1995-09-19
Denion, Thomas E.
Expansible chamber devices
Piston
Open-ended hollow skirt type
277206A, 277216, 277217, 1231936, F16J 104
Patent
active
054507839
ABSTRACT:
A piston assembly such as that used with an internal combustion engine includes an annular cylinder having an inner cylinder wall defining a bore. An annular piston is reciprocal along a longitudinally extending axis within the bore of the cylinder. The piston includes two grooves that define the angled walls of a generally keystone wedge. A single strip of metal is formed into a one-piece split annular top land type piston ring with little or no intrinsic load. The piston ring is adapted to be received within the grooves of the piston to provide sealing engagement between the piston and the cylinder wall. The shape of the piston ring and the wedge of the piston provide a smooth sliding movement between the mating components as a dynamic force component is created in a radial direction in response to piston reciprocation along the longitudinal axis of the cylinder.
REFERENCES:
patent: 2003764 (1935-06-01), Welch
patent: 2012956 (1935-09-01), Chaffin
patent: 2074581 (1937-03-01), Frye
patent: 2228495 (1941-01-01), Williams
patent: 2296116 (1941-05-01), Pelc
patent: 3047301 (1962-07-01), Taylor et al.
patent: 3198531 (1965-08-01), Brenneke
patent: 3600045 (1971-07-01), Inoue
patent: 3704893 (1972-12-01), Hill
patent: 3742823 (1973-07-01), Fiedler
patent: 4877257 (1989-10-01), Ide
Dana Corporation
Denion Thomas E.
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