Oil-less/oil-free air brake compressor with a dual piston arrang

Details Oil-less/oil-free air brake compressor with a dual piston arrang Oil-less/oil-free air brake compressor with a dual piston arrang

1999-08-25

2000-09-05

Freay, Charles G.

Pumps

Expansible chamber type

Mechanically actuated distributor

417521, 92151, 92165R, F04B 700

Patent

active

061133671

ABSTRACT:
A cylinder is divided into two chambers by a wall to receive a pair of pistons. This reduces the stroke length and correspondingly reduces the linear speed of the piston. This leads to a reduced PV factor associated with degradation and wear of the piston rings. Moreover, the multi-cylinder arrangement provides the same performance in an oil-free compressor assembly without appreciably expanding dimensional constraints relative to known systems.

REFERENCES:
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patent: 665222 (1901-01-01), Isler
patent: 924098 (1909-06-01), Cole
patent: 1031528 (1912-07-01), Cole
patent: 1447514 (1923-03-01), Jorgensen
patent: 2034069 (1936-03-01), Walti
patent: 2972898 (1961-02-01), Hartel
patent: 3187730 (1965-06-01), White
patent: 3196618 (1965-07-01), Farmery et al.
patent: 3485141 (1969-12-01), Ott et al.
patent: 4759260 (1988-07-01), Lew
"Friction Temperature Generted by a Piston Ring in a Reciprocating Oil-less Air Brake Compressor", Dunaevsky, V. and Kudish, I., Nov. 16-18, 1998.

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