Device for creating pressure

Details Device for creating pressure Device for creating pressure

1996-05-14

1998-06-02

Thorpe, Timothy

Pumps

Expansible chamber type

Plural pumping chambers

F04B 3300, F04B 2504

Patent

active

057590184

ABSTRACT:
The invention relates to a device 1 for creating pressure, especially for use as an air pump or a standing compressor, with a stepped housing which is provided with at least one valve connection and whereby a first 8 and a second pressure chamber 61, 62 form a part of the housing's interior; the volume of the former can be altered by a piston and a seal 60 which is effective in only one direction connects the pressure chambers 8, 61, 62. It is proposed that the disadvantages of the known devices, a considerable expenditure of energy being necessary to obtain the final pressure, can be eliminated in that the second pressure chamber comprises two individual pressure chamber sections 61, 62 which are coaxial to the first pressure chamber 8 and which are in a working connection.

REFERENCES:
patent: 441402 (1890-11-01), Eby
patent: 670811 (1901-03-01), Phelps
patent: 1621978 (1927-03-01), Formway et al.
patent: 5676529 (1997-10-01), Hermansen et al.

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