Piston compressor for the oilfree compression of gases

Details Piston compressor for the oilfree compression of gases Piston compressor for the oilfree compression of gases

1992-09-30

1994-09-20

Look, Edward K.

Expansible chamber devices

Piston

Plural separable parts

92241, 92249, 92192, 277170, 277188R, 277 71, F16J 100, F16J 900

Patent

active

053479157

ABSTRACT:
The piston (6) guided in a cylinder (1) has at least one split so-called trapped piston ring (10) disposed in an annular groove on the piston. The circumferential face (12) of the ring remote from the inner face (11) of the cylinder bounds in the annular groove a space (23) which is acted upon by the pressure of the gas in the compression space. Starting from this circumferential face (12) the piston ring exhibits two radial boundary areas (13, 14) parallel with one another, of which the area (14) next to the compression space extends over part of the radial width of the ring. The piston ring (10) is guided by its two parallel boundary areas (13, 14) to slide against corresponding areas in the annular groove. The remaining area (16) of the piston ring next to the compression space, starting from the circumferential face (15) next the inner face (11) of the cylinder, forms a wedge face which extends at an angle of from 5.degree. to 15.degree. up to a boundary area parallel with the boundary area (14) next to the compression space. The face in the annular groove adjacent to the wedge face (16) has the same angle and is parallel to the wedge face (16).

REFERENCES:
patent: 1779837 (1920-10-01), Batty
patent: 2294519 (1942-09-01), Starr
patent: 2799523 (1957-07-01), Parker
patent: 2948554 (1960-08-01), Mahand
patent: 3023014 (1962-02-01), Donner
patent: 3353832 (1967-11-01), Coulson
patent: 3971298 (1976-07-01), Kulig
patent: 4326724 (1982-04-01), Gernandt
patent: 4714008 (1987-12-01), Bowers
patent: 5071318 (1991-12-01), Bice et al.

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