Global Patent Index - EP 0000611 A1

EP 0000611 A1 19790207 - A piston air or gas compressor, preferably for filling divers' breathing air cylinders.

Title (en)

A piston air or gas compressor, preferably for filling divers' breathing air cylinders.

Title (de)

Kolbenverdichter zum Füllen von Taucheratemluftzylinder.

Title (fr)

Compresseur à piston pour le remplissage des cylindres à air destinés à l'aspiration des plongeurs.

Publication

EP 0000611 A1 19790207 (EN)

Application

EP 78200115 A 19780720

Priority

GB 3046177 A 19770720

Abstract (en)

A piston compressor preferably for producing compressed air at high pressure for the filling of divers' breathing air cylinders, comprising a cylinder and a plunger type piston provided with sealing rings at both ends thereof, these respective piston ends operating in cylinder bore portions of unequal diameters, the cylinder having stationary sealing rings located between these two bore portions for sealingly engaging the piston wall and thus divide the ring cylindrical space between the sealing rings of the opposed piston ends into two individual compression chambers usable as consecutive compression stages. A first compressing stage of large volume can be provided between the piston top and the cylinder end, and the compressor may thus operate as a three stage compressor with the use of a simple and robust cylinder and piston arrangement.

IPC 1-7

F04B 25/02; F04B 39/04

IPC 8 full level

F04B 25/02 (2006.01); F04B 39/04 (2006.01); F04B 53/14 (2006.01)

CPC (source: EP)

F04B 25/02 (2013.01); F04B 39/041 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE CH DE FR GB NL SE

DOCDB simple family (publication)

EP 0000611 A1 19790207; DK 318878 A 19790121; FI 782271 A 19790121; IT 1097889 B 19850831; IT 7825844 A0 19780718; JP S5423209 A 19790221; NO 782488 L 19790123

DOCDB simple family (application)

EP 78200115 A 19780720; DK 318878 A 19780717; FI 782271 A 19780718; IT 2584478 A 19780718; JP 8888678 A 19780720; NO 782488 A 19780719