Tandem master cylinder with filters arranged in central valves

Details Tandem master cylinder with filters arranged in central valves Tandem master cylinder with filters arranged in central valves

1990-08-10

1991-09-10

Look, Edward K.

Power plants

Pressure fluid source and motor

Pulsator

60454, 60589, B60T 1120, B60T 1128, F15B 708

Patent

active

050463160

ABSTRACT:
A tandem master cylinder (1) with central valves (12, 37) positioned in the secondary piston (15), separate from the latter at the end of the cylinder bore (2) and arranged with filter elements (27, 28, 48, 49) upstream of the central valves (12, 37) so as to protect the latter from dirt. In order to be able simultaneously to reduce the total overall axial length, hydraulic fluid flows radially through the filter elements (27, 49) which become effective in the event of a backflow of hydraulic fluid and said filter elements (27, 49) are positioned on the pedal side in respect of the second stop (14) of the secondary piston (15), respectively radially aside the closing spring (46) of the second central valve (37).

REFERENCES:
patent: 2679729 (1954-06-01), Swift
patent: 4472941 (1984-09-01), Schopper et al.
patent: 4550567 (1985-11-01), Schaeffer
patent: 4665701 (1987-05-01), Bach
patent: 4724674 (1988-02-01), Fulmer
patent: 4961846 (1990-10-01), Isakson

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