Master cylinder dip stick

Details Master cylinder dip stick Master cylinder dip stick

1989-11-24

1991-01-01

Kwon, John T.

Power plants

Pressure fluid source and motor

Pulsator

33722, 73 61R, 73 611R, 116227, B60T 1126, F15B 708

Patent

active

049810162

ABSTRACT:
A dipstick in the brake fluid reservoir of a brake system of the type having one or more pistons carrying a seal of elastomeric material subject to swelling upon exposure to the presence of a foreign fluid other than brake fluid. A piece of elastomeric material of the same type as the elastomeric material of the piston seal is mounted on the dip stick at a level thereon to be consistently submerged in the brake fluid whereby the presence of the seal swelling foreign fluid in the brake fluid reservoir will be detectable by examination of the piece of elastomeric material upon removal of the dip stick from the reservoir.

REFERENCES:
patent: 1658774 (1928-02-01), Taub
patent: 1774439 (1930-08-01), Holtson
patent: 3448618 (1969-06-01), Lomolino
patent: 3568628 (1971-03-01), Erickson
patent: 3745659 (1973-07-01), Hsu
patent: 3763706 (1973-10-01), Hubby
patent: 3796098 (1974-03-01), Trayer
patent: 4331185 (1982-05-01), Rinaldo et al.
patent: 4622851 (1986-11-01), Wilson
patent: 4720998 (1988-01-01), Hogue
patent: 4746338 (1988-05-01), Williams
patent: 4761886 (1988-08-01), Wilson et al.

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